BANCFIRST CORP /OK/
POS AM, 1997-07-03
NATIONAL COMMERCIAL BANKS
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<PAGE>
 
         
     As filed with the Securities and Exchange Commission on July 3, 1997
                                                  REGISTRATION NO. 333-25599    
================================================================================
    
                      SECURITIES AND EXCHANGE COMMISSION
                            WASHINGTON, D.C.  20549
                        POST-EFFECTIVE AMENDMENT NO. 1
                                      TO
                                   FORM S-4      
     
            REGISTRATION STATEMENT UNDER THE SECURITIES ACT OF 1933
                           -------------------------
      BANCFIRST CORPORATION                          BFC CAPITAL TRUST I
  (Exact name of Registrant as                   (Exact name of Registrant as
    specified in its charter)                  specified in its trust agreement)
 
            OKLAHOMA                                       DELAWARE
 (State or other jurisdiction of                (State or other jurisdiction of
 incorporation or organization)                  incorporation or organization)
            _________                                       _________
              6022                                            6719
  (Primary Standard Industrial                    (Primary Standard Industrial
   Classification Code Number)                     Classification Code Number)
 
           73-1221379                                     73-6300105
        (I.R.S. Employer                               (I.R.S. Employer
       Identification No.)                            Identification No.)
                           -------------------------
                         101 North Broadway, Suite 200
                         Oklahoma City, Oklahoma 73102
                                 (405) 270-1086
    (Address, including zip code, and telephone number, including area code,
                  of Registrants' principal executive offices)

         David E. Rainbolt                          Joe T. Shockley, Jr.
President and Chief Executive Officer        Executive Vice President and Chief 
       BancFirst Corporation                          Financial Officer 
   101 North Broadway, Suite 200                    BancFirst Corporation
   Oklahoma City, Oklahoma 73102                 101 North Broadway, Suite 200 
          (405) 270-1086                         Oklahoma City, Oklahoma 73102 
                                                         (405) 270-1086
    (Name, address, including zip code, and telephone number, including area
                          code, of agents for service)

                                   COPIES TO:
- ------------------------------ ------------------------  -----------------------
Jeanette C. Timmons, Esq.      Edward F. Petrosky, Esq.   Richard Clemens, Esq.
Day Edwards Federman Propester     Brown & Wood LLP          Sidley & Austin
 & Christensen, P.C.            One World Trade Center    1 First National Plaza
210 Park Avenue, Suite 2900    New York, New York 10048  Chicago, Illinois 60603
Oklahoma City, Oklahoma 73102      (212) 839-5300           (312) 853-7321
(405) 239-2121
- ------------------------------ ------------------------  -----------------------
        
 Approximate date of commencement of proposed sale of securities to the public:
      As soon as practicable after this Post-effective Amendment to the 
                   Registration Statement becomes effective.      

<PAGE>
 
          
        
                              BFC CAPITAL TRUST I

                             OFFER TO EXCHANGE ITS
                      9.65% CAPITAL SECURITIES, SERIES B
               (LIQUIDATION AMOUNT $1,000 PER CAPITAL SECURITY)
          WHICH HAVE BEEN REGISTERED UNDER THE SECURITIES ACT OF 1933
                      FOR ANY AND ALL OF ITS OUTSTANDING
                      9.65% CAPITAL SECURITIES, SERIES A
               (LIQUIDATION AMOUNT $1,000 PER CAPITAL SECURITY)
              UNCONDITIONALLY GUARANTEED, AS DESCRIBED HEREIN, BY

                             BANCFIRST CORPORATION
        
      THE EXCHANGE OFFER AND WITHDRAWAL RIGHTS WILL EXPIRE AT 5:00 P.M.,
            NEW YORK CITY TIME, ON AUGUST 1, 1997, UNLESS EXTENDED      
     
                             ____________________
    
     BFC Capital Trust I, a trust formed under the laws of the State of Delaware
(the "Trust"), hereby offers, upon the terms and subject to the conditions set
forth in this Prospectus (as the same may be amended or supplemented from time
to time, the "Prospectus") and in the accompanying Letter of Transmittal (which
together constitute the "Exchange Offer"), to exchange up to $25,000,000
aggregate Liquidation Amount of its 9.65% Capital Securities, Series B (the "New
Capital Securities"), which have been registered under the Securities Act of
1933, as amended (the "Securities Act"), pursuant to a Registration Statement
(as defined herein) of which this Prospectus constitutes a part, for a like
Liquidation Amount of its outstanding 9.65% Capital Securities, Series A (the
"Old Capital Securities"), of which $25,000,000 aggregate Liquidation Amount is
outstanding. Pursuant to the Exchange Offer, BancFirst Corporation, an Oklahoma
corporation (the "Company"), is also offering to exchange all of its 9.65%
Junior Subordinated Deferrable Interest Debentures, Series B, due January 15,
2027 (the "New Junior Subordinated Debentures"), for a like aggregate principal
amount of its outstanding 9.65% Junior Subordinated Deferrable Interest
Debentures, Series A, due January 15, 2027 (the "Old Junior Subordinated
Debentures"). Promptly after the Expiration Date (as defined herein), the
Company will also execute its guarantee of payments of cash distributions and
payments on liquidation of the Trust or redemption of the New Capital Securities
(the "New Guarantee"). The New Junior Subordinated Debentures and the New
Guarantee also have been registered under the Securities Act. The Old Capital
Securities, the existing guarantee in respect of the Old Capital Securities (the
"Old Guarantee") and the Old Junior Subordinated Debentures are collectively
referred to herein as the "Old Securities" and the New Capital Securities, the
New Guarantee and the New Junior Subordinated Debentures are collectively
referred to herein as the "New Securities."      

     The terms of the New Securities are identical in all material respects to
the respective terms of the Old Securities, except that (i) the New Securities
have been registered under the Securities Act and therefore will not be subject
to certain restrictions on transfer applicable to the Old Securities, (ii) the
New Capital Securities will not contain the $100,000 minimum Liquidation Amount
transfer restriction, (iii) the New Capital Securities will not provide for any
increase in the distribution rate thereon, (iv) the New Junior Subordinated
Debentures will not contain the $100,000 minimum principal amount transfer
restriction and (v) the New Junior Subordinated Debentures will not provide for
any increase in the interest rate thereon. See "Description of New Securities"
and "Description of Old Securities." The New Capital Securities are being
offered for exchange in order to satisfy certain obligations of the Company and
the Trust under the Registration Rights Agreement dated as of February 4, 1997
(the "Registration Rights Agreement") among the Company, the Trust and the
Initial Purchasers (as defined herein). In the event that the Exchange Offer is
consummated, any Old Capital Securities which remain outstanding after
consummation of the Exchange Offer and the New Capital Securities issued in the
Exchange Offer will vote together as a single class for purposes of determining
whether holders of the requisite percentage in outstanding Liquidation Amount
thereof have taken certain actions or exercised certain rights under the Trust
Agreement.

                                               (Continued on the following page)
        
     This Prospectus and the Letter of Transmittal are first being mailed to all
holders of Old Capital Securities on July 7, 1997.      

     SEE "RISK FACTORS" COMMENCING ON PAGE 15 FOR CERTAIN INFORMATION THAT
SHOULD BE CONSIDERED BY HOLDERS IN DECIDING WHETHER TO TENDER OLD CAPITAL
SECURITIES IN THE EXCHANGE OFFER.

     THESE SECURITIES HAVE NOT BEEN APPROVED OR DISAPPROVED BY THE SECURITIES
AND EXCHANGE COMMISSION (THE "COMMISSION") OR ANY STATE SECURITIES COMMISSION
NOR HAS THE COMMISSION OR ANY STATE SECURITIES COMMISSION PASSED UPON THE
ACCURACY OR ADEQUACY OF THIS PROSPECTUS. ANY REPRESENTATION TO THE CONTRARY IS A
CRIMINAL OFFENSE.
        
              The date of this Prospectus is July 7, 1997.      
<PAGE>
 
     The New Capital Securities and the Old Capital Securities (collectively,
the "Capital Securities") represent beneficial interests in the assets of the
Trust. The Company is the owner of all of the beneficial interests represented
by common securities of the Trust (the "Common Securities," and together with
the Capital Securities, the "Trust Securities"). The Bank of New York is the
Property Trustee of the Trust. The Trust exists for the purpose of issuing the
Trust Securities and investing the proceeds thereof in the Junior Subordinated
Debentures (as defined herein). The Junior Subordinated Debentures will mature
on January 15, 2027 (the "Stated Maturity Date"). The Capital Securities will
have a preference over the Common Securities under certain circumstances with
respect to cash distributions and amounts payable on liquidation, redemption or
otherwise. See "Description of New Securities-Description of New Capital
Securities-Subordination of Common Securities."

     As used herein, (i) the "Indenture" means the Indenture, dated as of
February 4, 1997, as amended and supplemented from time to time, between the
Company and The Bank of New York, as Debenture Trustee (the "Debenture
Trustee"), (ii) the "Trust Agreement" means the Amended and Restated Declaration
of Trust relating to the Trust among the Company, as Sponsor, The Bank of New
York, as Property Trustee (the "Property Trustee"), The Bank of New York
(Delaware), as Delaware Trustee (the "Delaware Trustee"), and the Administrative
Trustees named therein (collectively, with the Property Trustee and Delaware
Trustee, the "Issuer Trustees"). In addition, as the context may require, unless
otherwise expressly stated, (i) the term "Junior Subordinated Debentures"
includes the Old Junior Subordinated Debentures and the New Junior Subordinated
Debentures and (ii) the term "Guarantee" includes the Old Guarantee and the New
Guarantee.
        
     Holders of the Capital Securities are entitled to receive preferential
cumulative cash distributions arising from the payment of interest on the Junior
Subordinated Debentures, payable semi-annually in arrears on January 15 and July
15 of each year, commencing July 15, 1997, at the annual rate of 9.65% of the
Liquidation Amount of $1,000 per New Capital Security ("Distributions"). The 
payment of Distributions accumulated from and including February 4, 1997 will be
made on July 15, 1997 to the holders of the Old Capital Securities as they
appear on the books and records of the Trust on July 1, 1997, the record date
for the payment of Distributions on July 15, 1997. Holders of Old Capital
Securities whose Old Capital Securities are accepted for exchange will not
receive subsequent Distributions on such Old Capital Securities but, rather,
will be entitled to Distributions on the New Capital Securities accumulated from
and after July 15, 1997, payable semi-annually in arrears commencing January 15,
1998. The Company will have the right to defer payments of interest on the
Junior Subordinated Debentures at any time and from time to time for a period
not exceeding 10 consecutive semi-annual periods with respect to each deferral
period (each, an "Extension Period"), provided that no Extension Period may
extend beyond the Stated Maturity Date. Upon the termination of any such
Extension Period and the payment of all amounts then due, the Company may elect
to begin a new Extension Period, subject to the requirements set forth in the
Indenture. If and for so long as interest payments on the Junior Subordinated
Debentures are so deferred, Distributions on the Trust Securities will also be
deferred and the Company will not be permitted, subject to certain exceptions
described herein, to declare or pay any cash distributions with respect to the
Company's capital stock or to make any payment with respect to debt securities
of the Company that rank pari passu with or junior to the Junior Subordinated
Debentures. During an Extension Period, interest on the Junior Subordinated
Debentures will continue to accrue (and the amount of Distributions to which
holders of the Trust Securities are entitled will accumulate) at the rate of
9.65% per annum, compounded semi-annually, and holders of Trust Securities will
be required to accrue interest income for United States federal income tax
purposes. See "Description of New Securities-Description of New Junior
Subordinated Debentures-Option to Extend Interest Payment Date" and "Certain
United States Federal Income Tax Considerations-Interest Income and Original
Issue Discount."      

     Through the Guarantee, the guarantee agreement of the Company relating to
the Common Securities (the "Common Guarantee"), the Trust Agreement, the Junior
Subordinated Debentures and the Indenture, taken together, the Company has
guaranteed or will guarantee, as the case may be, fully, irrevocably and
unconditionally, all of the Trust's obligations under the Trust Securities. See
"Relationship Among the New Capital Securities, the New Junior Subordinated
Debentures and the New Guarantee-Full and Unconditional Guarantee." The Old
Guarantee and the Common Guarantee guarantee, and the New Guarantee will
guarantee, payments of Distributions and payments on liquidation of the Trust or
redemption of the Trust Securities, but in each case only to the extent that the
Trust holds funds on hand legally available therefor and has failed to make such
payments, as described herein. See "Description of New Securities-Description of
New Guarantee." If the Company fails to make a required payment on the Junior
Subordinated Debentures, the Trust will not have sufficient funds to make the
related payments, including Distributions, on the Trust Securities. The
Guarantee and the Common Guarantee will not cover any such payment when the
Trust does not have sufficient funds on hand legally available therefor. In such
event, a holder of Capital Securities may institute a legal proceeding directly
against the Company to enforce its rights in respect of such payment. See
"Description of New Securities-Description of New Junior Subordinated 
Debentures-Enforcement of Certain Rights By Holders of New Capital Securities."
The obligations of the Company under the Guarantee, the Common Guarantee and the
Junior Subordinated Debentures will rank subordinate and junior in right of
payment to all Senior Indebtedness (as defined in "Description of New 
Securities-Description of New Junior Subordinated Debentures-Subordination"),
which totaled approximately $6.6 million at December 31, 1996.

     The Trust Securities will be subject to mandatory redemption in a Like
Amount (as defined herein), (i) in whole but not in part, on the Stated Maturity
Date upon repayment of the Junior Subordinated Debentures at a redemption price
equal to the principal amount of, plus accrued interest on, the Junior
Subordinated Debentures (the "Maturity Redemption Price"), (ii) prior to January
15, 2007, in whole but not in part, contemporaneously with the optional
prepayment of the Junior Subordinated Debentures upon the

                                       2
<PAGE>
 
occurrence and continuation of a Special Event (as defined herein), at a
redemption price equal to the Special Event Prepayment Price (as defined below)
(the "Special Event Redemption Price"), and (iii) on or after January 15, 2007,
in whole or in part, contemporaneously with the optional prepayment by the
Company of the Junior Subordinated Debentures, at a redemption price equal to
the Optional Prepayment Price (as defined below) (the "Optional Redemption
Price"). Any of the Maturity Redemption Price, the Special Event Redemption
Price and the Optional Redemption Price may be referred to herein as the
"Redemption Price." See "Description of New Securities-Description of New
Capital Securities-Redemption." Subject to the Company having received prior
approval of the Board of Governors of the Federal Reserve System (the "Federal
Reserve") to do so if then required under applicable capital guidelines or
policies of the Federal Reserve, the Junior Subordinated Debentures will be
prepayable prior to the Stated Maturity Date at the option of the Company (i) on
or after January 15, 2007, in whole or in part, at a prepayment price (the
"Optional Prepayment Price") equal to 104.825% of the principal amount thereof
on January 15, 2007, declining ratably on each January 15 thereafter to 100% on
or after January 15, 2017, plus accrued interest thereon to the date of
prepayment, or (ii) prior to January 15, 2007, in whole but not in part, upon
the occurrence and continuation of a Special Event, at a prepayment price (the
"Special Event Prepayment Price") equal to the Make-Whole Amount (as defined
below) for each $1,000 principal amount of Junior Subordinated Debentures. The
"Make-Whole Amount" shall be equal to the greater of (x) 100% of the principal
amount thereof or (y) the sum, as determined by a Quotation Agent (as
hereinafter defined), of the present values of the remaining scheduled payments
of principal and interest thereon discounted to the prepayment date on a semi-
annual basis (assuming a 360-day year consisting of twelve 30-day months) at the
Adjusted Treasury Rate (as defined herein) plus, in either case, accrued
interest thereon to the date of prepayment. Either of the Optional Prepayment
Price or the Special Event Prepayment Price may be referred to herein as the
"Prepayment Price." See "Description of New Securities-Description of New Junior
Subordinated Debentures-Optional Prepayment" and "-Special Event Prepayment."

     The Company will have the right at any time to terminate the Trust and
cause a Like Amount of the Junior Subordinated Debentures to be distributed to
the holders of the Trust Securities in liquidation of the Trust, subject to (i)
the Company having received an opinion of counsel to the effect that such
distribution will not be a taxable event to holders of Capital Securities and
(ii) the prior approval of the Federal Reserve to do so if then required under
applicable capital guidelines or policies of the Federal Reserve. Unless the
Junior Subordinated Debentures are distributed to the holders of the Trust
Securities, in the event of a liquidation of the Trust as described herein,
after satisfaction of liabilities to creditors of the Trust as required by
applicable law, the holders of the Capital Securities generally will be entitled
to receive a Liquidation Amount of $1,000 per Capital Security plus accumulated
Distributions thereon to the date of payment. See "Description of New 
Securities-Description of New Capital Securities-Liquidation of the Trust and
Distribution of Junior Subordinated Debentures."

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

     The Trust is making the Exchange Offer of the New Capital Securities in
reliance on the position of the staff of the Division of Corporation Finance of
the Commission (the "Staff") as set forth in certain interpretive letters
addressed to third parties in other transactions. However, neither the Company
nor the Trust has sought its own interpretive letter and there can be no
assurance that the Staff would make a similar determination with respect to the
Exchange Offer as it has in such interpretive letters to third parties. Based on
these interpretations by the Staff, and subject to the two immediately following
sentences, the Company and the Trust believe that New Capital Securities issued
pursuant to this Exchange Offer in exchange for Old Capital Securities may be
offered for resale, resold and otherwise transferred by a holder thereof (other
than a holder who is a broker-dealer) without further compliance with the
registration and prospectus delivery requirements of the Securities Act,
provided that such New Capital Securities are acquired in the ordinary course of
such holder's business and that such holder is not participating, and has no
arrangement or understanding with any person to participate, in a distribution
(within the meaning of the Securities Act) of such New Capital Securities.
However, any holder of Old Capital Securities who is an "affiliate," as such
term is defined in Rule 405 under the Securities Act (an "Affiliate"), of the
Company or the Trust or who intends to participate in the Exchange Offer for the
purpose of distributing New Capital Securities, or any broker-dealer who
purchased Old Capital Securities from the Trust for resale pursuant to Rule 144A
under the Securities Act ("Rule 144A") or any other available exemption under
the Securities Act, (a) will not be able to rely on the interpretations of the
Staff set forth in the above-mentioned interpretive letters, (b) will not be
permitted or entitled to tender such Old Capital Securities in the Exchange
Offer and (c) must comply with the registration and prospectus delivery
requirements of the Securities Act in connection with any sale or other transfer
of such Old Capital Securities unless such sale is made pursuant to an exemption
from such requirements. In addition, as described below, if any broker-dealer
holds Old Capital Securities acquired for its own account as a result of market-
making or other trading activities and exchanges such Old Capital Securities for
New Capital Securities, then such broker-dealer must deliver a prospectus
meeting the requirements of the Securities Act in connection with any resales of
such New Capital Securities.

                                       3
<PAGE>
 
     Each holder of Old Capital Securities who wishes to exchange Old Capital
Securities for New Capital Securities in the Exchange Offer will be required to
represent that (i) it is not an Affiliate of the Company or the Trust, (ii) any
New Capital Securities to be received by it are being acquired in the ordinary
course of its business, (iii) it has no arrangement or understanding with any
person to participate in a distribution (within the meaning of the Securities
Act) of such New Capital Securities, and (iv) if such holder is not a broker-
dealer, such holder is not engaged in, and does not intend to engage in, a
distribution (within the meaning of the Securities Act) of such New Capital
Securities. In addition, the Company and the Trust may require such holder, as a
condition to such holder's eligibility to participate in the Exchange Offer, to
furnish to the Company and the Trust (or an agent thereof) in writing
information as to the number of "beneficial owners" (within the meaning of Rule
13d-3 under the Securities Exchange Act of 1934, as amended (the "Exchange
Act")) on behalf of whom such holder holds the Capital Securities to be
exchanged in the Exchange Offer. Each broker-dealer that receives New Capital
Securities for its own account pursuant to the Exchange Offer must acknowledge
that it acquired the Old Capital Securities for its own account as the result of
market-making activities or other trading activities and must agree that it will
deliver a prospectus meeting the requirements of the Securities Act in
connection with any resale of such New Capital Securities. The Letter of
Transmittal states that, by so acknowledging and by delivering a prospectus, a
broker-dealer will not be deemed to admit that it is an "underwriter" within the
meaning of the Securities Act. Based on the position taken by the Staff in the
interpretive letters referred to above, the Company and the Trust believe that
broker-dealers who acquired Old Capital Securities for their own accounts, as a
result of market-making activities or other trading activities ("Participating
Broker- Dealers"), may fulfill their prospectus delivery requirements with
respect to the New Capital Securities received upon exchange of such Old Capital
Securities (other than Old Capital Securities which represent an unsold
allotment from the original sale of the Old Capital Securities) with a
prospectus meeting the requirements of the Securities Act, which may be the
prospectus prepared for an exchange offer so long as it contains a description
of the plan of distribution with respect to the resale of such New Capital
Securities. Accordingly, this Prospectus, as it may be amended or supplemented
from time to time, may be used by a Participating Broker-Dealer during the
period referred to below in connection with resales of New Capital Securities
received in exchange for Old Capital Securities where such Old Capital
Securities were acquired by such Participating Broker-Dealer for its own account
as a result of market-making or other trading activities. Subject to certain
provisions set forth in the Registration Rights Agreement, the Company and the
Trust have agreed that this Prospectus, as it may be amended or supplemented
from time to time, may be used by a Participating Broker-Dealer in connection
with resales of such New Capital Securities for a period ending 90 days after
the Expiration Date (as defined herein) (subject to extension under certain
limited circumstances described below) or, if earlier, when all such New Capital
Securities have been disposed of by such Participating Broker-Dealer. See "Plan
of Distribution." However, a Participating Broker-Dealer who intends to use this
Prospectus in connection with the resale of New Capital Securities received in
exchange for Old Capital Securities pursuant to the Exchange Offer must notify
the Company or the Trust, or cause the Company or the Trust to be notified, on
or prior to the Expiration Date, that it is a Participating Broker-Dealer. Such
notice may be given in the space provided for that purpose in the Letter of
Transmittal or may be delivered to the Exchange Agent at one of the addresses
set forth herein under "The Exchange Offer-Exchange Agent." Any Participating
Broker-Dealer who is an Affiliate of the Company or the Trust may not rely on
such interpretive letters and must comply with the registration and prospectus
delivery requirements of the Securities Act in connection with any resale
transaction. See "The Exchange Offer-Resales of New Capital Securities."

     In that regard, each Participating Broker-Dealer who surrenders Old Capital
Securities pursuant to the Exchange Offer will be deemed to have agreed, by
execution of the Letter of Transmittal, that, upon receipt of notice from the
Company or the Trust of the occurrence of any event or the discovery of any fact
which makes any statement contained or incorporated by reference in this
Prospectus untrue in any material respect or which causes this Prospectus to
omit to state a material fact necessary in order to make the statements
contained or incorporated by reference herein, in light of the circumstances
under which they were made, not misleading or of the occurrence of certain other
events specified in the Registration Rights Agreement, such Participating 
Broker-Dealer will suspend the sale of New Capital Securities (or the New
Guarantee or the New Junior Subordinated Debentures, as applicable) pursuant to
this Prospectus until the Company or the Trust has amended or supplemented this
Prospectus to correct such misstatement or omission and has furnished copies of
the amended or supplemented Prospectus to such Participating Broker-Dealer or
the Company or the Trust has given notice that the sale of the New Capital
Securities (or the New Guarantee or the New Junior Subordinated Debentures, as
applicable) may be resumed, as the case may be. If the Company or the Trust
gives such notice to suspend the sale of the New Capital Securities (or the New
Guarantee or the New Junior Subordinated Debentures, as applicable), it shall
extend the 90-day period referred to above during which Participating Broker-
Dealers are entitled to use this Prospectus in connection with the resale of New
Capital Securities by the number of days during the period from and including
the date of the giving of such notice to and including the date when
Participating Broker-Dealers shall have received copies of the amended or
supplemented Prospectus necessary to permit resales of the New Capital
Securities or to and including the date on which the Company or the Trust has
given notice that the sale of New Capital Securities (or the New Guarantee or
the New Junior Subordinated Debentures, as applicable) may be resumed, as the
case may be.

                                       4
<PAGE>
 
     Prior to the Exchange Offer, there has been only a limited secondary market
and no public market for the Old Capital Securities. The New Capital Securities
will be a new issue of securities for which there currently is no market.
Although the Initial Purchasers have informed the Company and the Trust that
they each currently intend to make a market in the New Capital Securities, they
are not obligated to do so, and any such market making may be discontinued at
any time without notice. Accordingly, there can be no assurance as to the
development or liquidity of any market for the New Capital Securities. The
Company and the Trust currently do not intend to apply for listing of the New
Capital Securities on any securities exchange or for quotation through the
National Association of Securities Dealers Automated Quotation System
("Nasdaq").

     Any Old Capital Securities not tendered and accepted in the Exchange Offer
will remain outstanding and will be entitled to all the same rights and will be
subject to the same limitations applicable thereto under the Trust Agreement
(except for those rights which terminate upon consummation of the Exchange
Offer). Following consummation of the Exchange Offer, the holders of Old Capital
Securities will continue to be subject to all of the existing restrictions upon
transfer thereof and neither the Company nor the Trust will have any further
obligation to such holders (other than under certain limited circumstances) to
provide for registration under the Securities Act of the Old Capital Securities
held by them. To the extent that Old Capital Securities are tendered and
accepted in the Exchange Offer, a holder's ability to sell untendered Old
Capital Securities could be adversely affected. See "Risk Factors-Consequences
of a Failure to Exchange Old Capital Securities."

     THIS PROSPECTUS AND THE RELATED LETTER OF TRANSMITTAL CONTAIN IMPORTANT
INFORMATION. HOLDERS OF OLD CAPITAL SECURITIES ARE URGED TO READ THIS PROSPECTUS
AND THE RELATED LETTER OF TRANSMITTAL CAREFULLY BEFORE DECIDING WHETHER TO
TENDER THEIR OLD CAPITAL SECURITIES PURSUANT TO THE EXCHANGE OFFER.
        
     Old Capital Securities may be tendered for exchange on or prior to 5:00
p.m., New York City time, on August 1, 1997 (such time on such date being
hereinafter called the "Expiration Date"), unless the Exchange Offer is extended
by the Company or the Trust (in which case the term "Expiration Date" shall mean
the latest date and time to which the Exchange Offer is extended). Tenders of
Old Capital Securities may be withdrawn at any time on or prior to the
Expiration Date. The Exchange Offer is not conditioned upon any minimum
Liquidation Amount of Old Capital Securities being tendered for exchange.
However, the Exchange Offer is subject to certain events and conditions which
may be waived by the Company or the Trust and to the terms and provisions of the
Registration Rights Agreement. Old Capital Securities may be tendered in whole
or in part having an aggregate Liquidation Amount of not less than $100,000 (100
Capital Securities) or any integral multiple of $1,000 Liquidation Amount (one
Capital Security) in excess thereof. The Company has agreed to pay all expenses
of the Exchange Offer. See "The Exchange Offer-Fees and Expenses." The payment
of Distributions accumulated from and including February 4, 1997 will be made on
July 15, 1997 to the holders of the Old Capital Securities as they appear on the
books and records of the Trust on July 1, 1997, the record date for the payment
of Distributions on July 15, 1997. Holders of Old Capital Securities whose Old
Capital Securities are accepted for exchange will not receive subsequent
Distributions on such Old Capital Securities but, rather, will be entitled to
Distributions on the New Capital Securities accumulated from and after July 15,
1997, payable semi-annually in arrears commencing January 15, 1998. See "The
Exchange Offer-Distributions on New Capital Securities."      

     Neither the Company nor the Trust will receive any cash proceeds from the
issuance of the New Capital Securities offered hereby. No dealer-manager is
being used in connection with this Exchange Offer. See "Use of Proceeds" and
"Plan of Distribution."

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

     NO DEALER, SALESPERSON OR OTHER INDIVIDUAL HAS BEEN AUTHORIZED TO GIVE ANY
INFORMATION OR TO MAKE ANY REPRESENTATIONS OTHER THAN THOSE CONTAINED OR
INCORPORATED BY REFERENCE IN THIS PROSPECTUS IN CONNECTION WITH THIS EXCHANGE
OFFER AND, IF GIVEN OR MADE, SUCH INFORMATION OR REPRESENTATIONS MUST NOT BE
RELIED UPON AS HAVING BEEN AUTHORIZED BY THE COMPANY OR THE TRUST. NEITHER THE
DELIVERY OF THIS PROSPECTUS NOR ANY EXCHANGE MADE PURSUANT HERETO SHALL UNDER
ANY CIRCUMSTANCE CREATE AN IMPLICATION THAT THERE HAS BEEN NO CHANGE IN THE
AFFAIRS OF THE COMPANY OR THE TRUST SINCE THE DATE HEREOF. THIS PROSPECTUS DOES
NOT CONSTITUTE AN OFFER OR A SOLICITATION BY ANYONE IN ANY JURISDICTION IN WHICH
SUCH OFFER OR SOLICITATION IS NOT AUTHORIZED OR IN WHICH THE PERSON MAKING SUCH
OFFER OR SOLICITATION IS NOT QUALIFIED TO DO SO OR TO ANYONE TO WHOM IT IS
UNLAWFUL TO MAKE SUCH OFFER OR SOLICITATION.

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

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<PAGE>
 
    
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                                                                        Page

Available Information.................................................    8
Incorporation of Certain Documents by Reference.......................    8
Summary...............................................................   10
Risk Factors..........................................................   15
Ratios of Earnings to Fixed Charges...................................   19
Use of Proceeds.......................................................   19
Capitalization........................................................   20
Summary Financial Data................................................   21
BFC Capital Trust I...................................................   21
BancFirst Corporation.................................................   22
The Exchange Offer....................................................   23
Description of New Securities.........................................   30
Description of Old Securities.........................................   48
Relationship Among the New Capital Securities, the New                 
  Junior Subordinated Debentures and the New Guarantee................   48
Certain United States Federal Income Tax Considerations...............   49
ERISA Considerations..................................................   52
Plan of Distribution..................................................   53
Validity of New Securities............................................   54
Experts...............................................................   54
     
                                       6
<PAGE>
 
                             AVAILABLE INFORMATION

     The Company is subject to the informational requirements of the Exchange
Act, and in accordance therewith, files reports, proxy statements and other
information with the Commission. Such reports, proxy statements and other
information and be inspected and copied at the public reference facilities of
the Commission at Room 1024, 450 Fifth Street, N.W., Washington, D.C. 20549 and
at the regional offices of the Commission located at 7 World Trade Center, 13th
Floor, Suite 1300, New York, New York 10048 and Suite 1400, Citicorp Center,
14th Floor, 500 West Madison Street, Chicago, Illinois 60661. Copies of such
material can also be obtained at prescribed rates by writing to the Public
Reference Section of the Commission at 450 Fifth Street, N.W., Washington, D.C.
20549. Such information may also be accessed electronically by means of the
Commission's home page on the Internet (http://www.sec.gov.). In addition, such
reports, proxy statements and other information concerning the Company can be
inspected at the offices of the Nasdaq Stock Market, Inc., 1735 K. Street, N.W.,
Washington, D.C. 20006-1500, on which the common stock of the Company is listed.

     No separate financial statements of the Trust have been included herein.
The Company and the Trust do not consider that such financial statements would
be material to holders of the New Capital Securities because the Trust is a
newly formed special purpose entity, has no operating history or independent
operations and is not engaged in and does not propose to engage in any activity
other than holding as trust assets the Junior Subordinated Debentures and
issuing the Trust Securities. See "BFC Capital Trust I" and "Description of New
Securities." In addition, the Company does not expect that the Trust will file
reports under the Exchange Act with the Commission.

     This Prospectus constitutes a part of a registration statement on Form S-4
(the "Registration Statement") filed by the Company and the Trust with the
Commission under the Securities Act. This Prospectus does not contain all the
information set forth in the Registration Statement, certain parts of which are
omitted in accordance with the rules and regulations of the Commission, and
reference is hereby made to the Registration Statement and to the exhibits
relating thereto for further information with respect to the Company, the Trust
and the New Securities. Any statements contained herein concerning the
provisions of any document are not necessarily complete, and, in each instance,
reference is made to the copy of such document filed as an exhibit to the
Registration Statement or otherwise filed with the Commission. Each such
statement is qualified in its entirety by such reference.


                INCORPORATION OF CERTAIN DOCUMENTS BY REFERENCE

     The following documents filed by the Company with the Commission are
incorporated into this Prospectus by reference:

     1.   The Company's Annual Report on Form 10-K for the year ended
          December 31, 1996;
    
     2.   The Company's Current Report on Form 8-K dated February 4, 1997; and
         
     3.   The Company's Quarterly Report on Form 10-Q for the quarter ended 
          March 31, 1997.       

     All documents subsequently filed by the Company pursuant to Section 13(a),
13(c), 14 or 15(d) of the Exchange Act after the date hereof and prior to the
termination of the Exchange Offer shall be deemed to be incorporated by
reference into this Prospectus and to be a part of this Prospectus from the date
of filing of such document. Any statement contained herein or in a document
incorporated or deemed to be incorporated by reference herein shall be deemed to
be modified or superseded for purposes of this Prospectus to the extent that a
statement contained herein or in any other subsequently filed document which
also is or is deemed to be incorporated by reference herein modifies or
supersedes such statement. Any statement so modified or superseded shall not be
deemed, except as so modified or superseded, to constitute a part of this
Prospectus.

     As used herein, the terms "Prospectus" and "herein" mean this Prospectus
including the documents incorporated or deemed to be incorporated herein by
reference, as the same may be amended, supplemented or otherwise modified from
time to time. Statements contained in this Prospectus as to the contents of any
contract or other document referred to herein do not purport to be complete, and
where reference is made to the particular provisions of such contract or other
document, such provisions are qualified in all respects by reference to all of
the provisions of such contract or other document. The Company will provide
without charge to any person to whom this Prospectus is delivered, on the
written or oral request of such person, a copy of any or all of the foregoing
documents incorporated by reference herein (other than exhibits not specifically
incorporated by reference into the texts of such documents). Requests for such
documents should be directed to: Investor Relations, BancFirst Corporation, 101
N. Broadway, Oklahoma City, Oklahoma 73102. Telephone requests may be directed
to Investor Relations at (405) 270-1086.

                                       7
<PAGE>
 
                                    SUMMARY

     The following is a summary of certain information contained elsewhere in
this Prospectus. Reference is made to, and this summary is qualified in its
entirety by, the more detailed information and financial statements, including
the notes thereto, contained elsewhere in this Prospectus.

                              BFC CAPITAL TRUST I

     The Trust is a statutory business trust formed under Delaware law pursuant
to (i) the Trust Agreement executed by the Company, as Sponsor, The Bank of New
York, as Property Trustee, and The Bank of New York (Delaware), as Delaware
Trustee, and the three individual Administrative Trustees named therein, and
(ii) the filing of a certificate of trust with the Delaware Secretary of State
on January 28, 1997. The Trust's business and affairs are conducted by the
Issuer Trustees: the Property Trustee, the Delaware Trustee, and the three
individual Administrative Trustees who are employees or officers of or
affiliated with the Company. The Trust exists for the exclusive purposes of (i)
issuing and selling the Trust Securities, (ii) using the proceeds from the sale
of the Trust Securities to acquire the Junior Subordinated Debentures issued by
the Company and (iii) engaging in only those other activities necessary,
advisable or incidental thereto (such as registering the transfer of the Trust
Securities). Accordingly, the Junior Subordinated Debentures will be the sole
assets of the Trust, and payments under the Junior Subordinated Debentures will
be the sole revenues of the Trust. All of the Common Securities are owned by the
Company.

                             BANCFIRST CORPORATION

     The Company is a registered bank holding company organized in 1984 under
Oklahoma law. It conducts substantially all of its operating activities through
its wholly-owned subsidiary, BancFirst, a state-chartered, Federal Reserve
member bank headquartered in Oklahoma City, Oklahoma ("BancFirst"). Through
BancFirst, the Company provides a full range of commercial banking services to
retail customers and small to medium-sized businesses both in the non-
metropolitan trade centers of Oklahoma and the metropolitan markets of Oklahoma
City, Tulsa, Norman, Muskogee and Shawnee.

     As of December 31, 1996, on a consolidated basis, the Company had total
assets of $1.2 billion, total deposits of $1.1 billion and total stockholders'
equity of $112 million. BancFirst maintained 49 banking locations serving 28
communities across central and eastern Oklahoma as of December 31, 1996. The
Company's primary lending activity is the financing of business and industry in
its market areas. As of December 31, 1996, the Company employed, in the
aggregate, approximately 788 full-time equivalent employees.

                               THE EXCHANGE OFFER

The Exchange Offer............ Up to $25,000,000 aggregate Liquidation Amount of
                               New Capital Securities are being offered in
                               exchange for a like aggregate Liquidation Amount
                               of Old Capital Securities. Old Capital Securities
                               may be tendered for exchange in whole or in part
                               in a Liquidation Amount of $100,000 (100 Capital
                               Securities) or any integral multiple of $1,000
                               (one Capital Security) in excess thereof. The
                               Company and the Trust are making the Exchange
                               Offer in order to satisfy their obligations under
                               the Registration Rights Agreement relating to the
                               Old Capital Securities. For a description of the
                               procedures for tendering Old Capital Securities,
                               see "The Exchange Offer-Procedures for Tendering
                               Old Capital Securities."
 

                                       8
<PAGE>
 
         
Expiration Date............... 5:00 p.m., New York City time, on August 1, 1997,
                               unless the Exchange Offer is extended by the
                               Company or the Trust (in which case the
                               Expiration Date will be the latest date and time
                               to which the Exchange Offer is extended). See
                               "The Exchange Offer-Terms of the Exchange Offer."
          
Conditions to the Exchange 
   Offer...................... The Exchange Offer is subject to certain
                               conditions, which may be waived by the Company
                               and the Trust in their sole discretion. The
                               Exchange Offer is not conditioned upon any
                               minimum Liquidation Amount of Old Capital
                               Securities being tendered. See "The Exchange
                               Offer-Conditions to the Exchange Offer."

Offer......................... The Company and the Trust reserve the right in
                               their sole and absolute discretion, subject to
                               applicable law, at any time and from time to
                               time, (i) to delay the acceptance of the Old
                               Capital Securities for exchange, (ii) to
                               terminate the Exchange Offer if certain specified
                               conditions have not been satisfied, (iii) to
                               extend the Expiration Date of the Exchange Offer
                               and retain all Old Capital Securities tendered
                               pursuant to the Exchange Offer, subject, however,
                               to the right of holders of Old Capital Securities
                               to withdraw their tendered Old Capital
                               Securities, or (iv) to waive any condition or
                               otherwise amend the terms of the Exchange Offer
                               in any respect. See "The Exchange Offer-Terms of
                               the Exchange Offer."

Withdrawal Rights............. Tenders of Old Capital Securities may be
                               withdrawn at any time on or prior to the
                               Expiration Date by delivering a written notice of
                               such withdrawal to the Exchange Agent in
                               conformity with certain procedures set forth
                               below under "The Exchange Offer-Withdrawal
                               Rights."

Procedures for Tendering 
   Old Capital Securities..... Each tendering holder of Old Capital Securities
                               must complete and sign a Letter of Transmittal in
                               accordance with the instructions contained
                               therein and forward the same by mail, facsimile
                               or hand delivery, together with any other
                               required documents, to the Exchange Agent, either
                               with the Old Capital Securities to be tendered or
                               in compliance with the specified procedures for
                               guaranteed delivery of Old Capital Securities.
                               Certain brokers, dealers, commercial banks, trust
                               companies and other nominees may also effect
                               tenders by book-entry transfer. Holders of Old
                               Capital Securities registered in the name of a
                               broker, dealer, commercial bank, trust company or
                               other nominee are urged to contact such person
                               promptly if they wish to tender Old Capital
                               Securities pursuant to the Exchange Offer. See
                               "The Exchange Offer-Procedures for Tendering Old
                               Capital Securities."
                               
                               Letters of Transmittal and certificates
                               representing Old Capital Securities should not be
                               sent to the Company or the Trust. Such documents
                               should only be sent to the Exchange Agent.
 

                                       9
<PAGE>
 
Resales of New Capital 
   Securities................. The Company and the Trust are making the Exchange
                               Offer in reliance on the position of the Staff as
                               set forth in certain interpretive letters
                               addressed to third parties in other transactions.
                               However, neither the Company nor the Trust has
                               sought its own interpretive letter and there can
                               be no assurance that the Staff would make a
                               similar determination with respect to the
                               Exchange Offer as it has in such interpretive
                               letters to third parties. Based on these
                               interpretations by the Staff, and subject to the
                               two immediately following sentences, the Company
                               and the Trust believe that New Capital Securities
                               issued pursuant to this Exchange Offer in
                               exchange for Old Capital Securities may be
                               offered for resale, resold and otherwise
                               transferred by a holder thereof (other than a
                               holder who is a broker-dealer) without further
                               compliance with the registration and prospectus
                               delivery requirements of the Securities Act,
                               provided that such New Capital Securities are
                               acquired in the ordinary course of such holder's
                               business and that such holder is not
                               participating, and has no arrangement or
                               understanding with any person to participate, in
                               a distribution (within the meaning of the
                               Securities Act) of such New Capital Securities.
                               However, any holder of Old Capital Securities who
                               is an Affiliate of the Company or the Trust or
                               who intends to participate in the Exchange Offer
                               for the purpose of distributing the New Capital
                               Securities, or any broker-dealer who purchased
                               the Old Capital Securities from the Trust for
                               resale pursuant to Rule 144A or any other
                               available exemption under the Securities Act, (a)
                               will not be able to rely on the interpretations
                               of the Staff set forth in the above-mentioned
                               interpretive letters, (b) will not be permitted
                               or entitled to tender such Old Capital Securities
                               in the Exchange Offer and (c) must comply with
                               the registration and prospectus delivery
                               requirements of the Securities Act in connection
                               with any sale or other transfer of such Old
                               Capital Securities unless such sale is made
                               pursuant to an exemption from such requirements.
                               In addition, as described below, if any broker-
                               dealer holds Old Capital Securities acquired for
                               its own account as a result of market-making or
                               other trading activities and exchanges such Old
                               Capital Securities for New Capital Securities,
                               then such broker-dealer must deliver a prospectus
                               meeting the requirements of the Securities Act in
                               connection with any resales of such New Capital
                               Securities.
                               
                               Each holder of Old Capital Securities who wishes
                               to exchange Old Capital Securities for New
                               Capital Securities in the Exchange Offer will be
                               required to represent that (i) it is not an
                               Affiliate of the Company or the Trust, (ii) any
                               New Capital Securities to be received by it are
                               being acquired in the ordinary course of its
                               business, (iii) it has no arrangement or
                               understanding with any person to participate in a
                               distribution (within the meaning of the
                               Securities Act) of such New Capital Securities,
                               and (iv) if such holder is not a broker-dealer,
                               such holder is not engaged in, and does not
                               intend to engage in, a distribution (within the
                               meaning of the Securities Act) of such New
                               Capital Securities.
 

                                       10
<PAGE>
 
 (continued)
Resales of New Capital 
   Securities................. Each broker-dealer that receives New Capital
                               Securities for its own account pursuant to the
                               Exchange Offer must acknowledge that it acquired
                               the Old Capital Securities for its own account as
                               the result of market-making activities or other
                               trading activities and must agree that it will
                               deliver a prospectus meeting the requirements of
                               the Securities Act in connection with any resale
                               of such New Capital Securities. The Letter of
                               Transmittal states that, by so acknowledging and
                               by delivering a prospectus, a broker-dealer will
                               not be deemed to admit that it is an
                               "underwriter" within the meaning of the
                               Securities Act. Based on the position taken by
                               the Staff in the interpretive letters referred to
                               above, the Company and the Trust believe that
                               Participating Broker-Dealers who acquired Old
                               Capital Securities for their own accounts as a
                               result of market-making activities or other
                               trading activities may fulfill their prospectus
                               delivery requirements with respect to the New
                               Capital Securities received upon exchange of such
                               Old Capital Securities (other than Old Capital
                               Securities which represent an unsold allotment
                               from the original sale of the Old Capital
                               Securities) with a prospectus meeting the
                               requirements of the Securities Act, which may be
                               the prospectus prepared for an exchange offer so
                               long as it contains a description of the plan of
                               distribution with respect to the resale of such
                               New Capital Securities. Accordingly, this
                               Prospectus, as it may be amended or supplemented
                               from time to time, may be used by a Participating
                               Broker-Dealer in connection with resales of New
                               Capital Securities received in exchange for Old
                               Capital Securities where such Old Capital
                               Securities were acquired by such Participating
                               Broker-Dealer for its own account as a result of
                               market-making or other trading activities.
                               Subject to certain provisions set forth in the
                               Registration Rights Agreement and to the
                               limitations described below under "The Exchange
                               Offer-Resale of New Capital Securities," the
                               Company and the Trust have agreed that this
                               Prospectus, as it may be amended or supplemented
                               from time to time, may be used by a Participating
                               Broker-Dealer in connection with resales of such
                               New Capital Securities for a period ending 90
                               days after the Expiration Date (subject to
                               extension under certain limited circumstances)
                               or, if earlier, when all such New Capital
                               Securities have been disposed of by such
                               Participating Broker-Dealer. See "Plan of
                               Distribution." Any Participating Broker-Dealer
                               who is an Affiliate of the Company or the Trust
                               may not rely on such interpretive letters and
                               must comply with the registration and prospectus
                               delivery requirements of the Securities Act in
                               connection with any resale transaction. See "The
                               Exchange Offer-Resales of New Capital
                               Securities."

Exchange Agent................ The exchange agent with respect to the Exchange
                               Offer is The Bank of New York (the "Exchange
                               Agent"). The applicable addresses, and telephone
                               and facsimile numbers, of the Exchange Agent are
                               set forth in "The Exchange Offer-Exchange Agent"
                               and in the Letter of Transmittal.
 

                                       11
<PAGE>
 
Use of Proceeds............... Neither the Company nor the Trust will receive
                               any cash proceeds from the issuance of the New
                               Capital Securities offered hereby. See "Use of
                               Proceeds."

Certain United States Federal 
   Income Tax Considerations;       
   ERISA Considerations....... Holders of Old Capital Securities should review
                               the information set forth under "Certain United
                               States Federal Income Tax Considerations" and
                               "ERISA Considerations" prior to tendering Old
                               Capital Securities in the Exchange Offer.

                           THE NEW CAPITAL SECURITIES

Securities Offered............ Up to $25,000,000 aggregate Liquidation Amount of
                               the Trust's New Capital Securities which have
                               been registered under the Securities Act
                               (Liquidation Amount $1,000 per New Capital
                               Security). The New Capital Securities will be
                               issued, and the Old Capital Securities were
                               issued, under the Trust Agreement. The New
                               Capital Securities and any Old Capital Securities
                               which remain outstanding after consummation of
                               the Exchange Offer will vote together as a single
                               class for purposes of determining whether holders
                               of the requisite percentage in outstanding
                               Liquidation Amount thereof have taken certain
                               actions or exercised certain rights under the
                               Trust Agreement. See "Description of New
                               Securities-Description of New Capital Securities-
                               Voting Rights; Amendment of the Trust Agreement."
                               The terms of the New Capital Securities are
                               identical in all material respects to the terms
                               of the Old Capital Securities, except that the
                               New Capital Securities have been registered under
                               the Securities Act and will not be subject to the
                               $100,000 minimum Liquidation Amount transfer
                               restriction and certain other restrictions on
                               transfer applicable to the Old Capital Securities
                               and will not provide for any increase in the
                               Distribution rate thereon. See "The Exchange
                               Offer-Purpose of the Exchange Offer,"
                               "Description of New Securities" and "Description
                               of Old Securities."
    
Distribution Dates............ January 15 and July 15 of each year, commencing
                               January 15, 1998. See "The Exchange Offer-
                               Distributions on New Capital Securities."      

Extension Periods............. Distributions on the New Capital Securities will
                               be deferred for the duration of any Extension
                               Period elected by the Company with respect to the
                               payment of interest on the New Junior
                               Subordinated Debentures. No Extension Period will
                               exceed 10 consecutive semi-annual periods or
                               extend beyond the Stated Maturity Date. See
                               "Description of New Securities-Description of New
                               Junior Subordinated Debentures-Option to Extend
                               Interest Payment Date" and "Certain United States
                               Federal Income Tax Considerations- Interest
                               Income and Original Issue Discount."

                                       12
<PAGE>
 
Ranking....................... The New Capital Securities will rank pari passu,
                               and payments thereon will be made pro rata, with
                               the Old Capital Securities and the Common
                               Securities except as described under "Description
                               of New Securities-Description of New Capital
                               Securities-Subordination of Common Securities."
                               
                               The New Junior Subordinated Debentures will rank
                               pari passu with the Old Junior Subordinated
                               Debentures and all other junior subordinated
                               debentures (if any) to be issued by the Company
                               ("Other Debentures") and sold (if at all) to
                               other trusts to be established by the Company (if
                               any), in each case similar to the Trust ("Other
                               Trusts"), and will be unsecured and rank
                               subordinate and junior in right of payment to all
                               Senior Indebtedness to the extent and in the
                               manner set forth in the Indenture. See
                               "Description of New Securities-Description of New
                               Junior Subordinated Debentures."
                               
                               The New Guarantee will rank pari passu with the
                               Old Guarantee and all other guarantees (if any)
                               issued by the Company with respect to capital
                               securities (if any) to be issued by Other Trusts
                               ("Other Guarantees") and will constitute an
                               unsecured obligation of the Company and will rank
                               subordinate and junior in right of payment to all
                               Senior Indebtedness to the extent and in the
                               manner set forth in the Guarantee Agreement. See
                               "Description of New Securities- Description of
                               New Guarantee."

Redemption.................... The Trust Securities are subject to mandatory
                               redemption in a Like Amount, (i) in whole but not
                               in part, on the Stated Maturity Date upon
                               repayment of the Junior Subordinated Debentures,
                               (ii) prior to January 15, 2007, in whole but not
                               in part, at any time contemporaneously with the
                               optional prepayment of the Junior Subordinated
                               Debentures by the Company upon the occurrence and
                               continuation of a Special Event and (iii) on or
                               after January 15, 2007, in whole or in part, at
                               any time contemporaneously with the optional
                               prepayment by the Company of the Junior
                               Subordinated Debentures, in each case at the
                               applicable Redemption Price. See "Description of
                               New Securities-Description of New Capital
                               Securities-Redemption."

Rating........................ The New Capital Securities are expected to be
                               rated BBB- by Thomson BankWatch, Inc.

Absence of Market for the 
   New Capital Securities..... The New Capital Securities will be a new issue of
                               securities for which there currently is no
                               market. Although Bear, Stearns & Co. Inc. and
                               Sandler O'Neill & Partners, L.P., the initial
                               purchasers of the Old Capital Securities (the
                               "Initial Purchasers"), have informed the Company
                               and the Trust that they each currently intend to
                               make a market in the New Capital Securities, they
                               are not obligated to do so, and any such market
                               making may be discontinued at any time without
                               notice. Accordingly, there can be no assurance as
                               to the development or liquidity of any market for
                               the New Capital Securities. The Trust and the
                               Company do not intend to apply for listing of the
                               New Capital Securities on any securities exchange
                               or for quotation through Nasdaq. See "Plan of
                               Distribution."
                               

                                       13
<PAGE>
 
                                 RISK FACTORS
 
     Holders of the Old Capital Securities should consider carefully, in
addition to the other information contained in this Prospectus, the following
factors in connection with the Exchange Offer and the New Capital Securities
offered hereby.
 
RANKING OF SUBORDINATED OBLIGATIONS UNDER THE GUARANTEE AND THE 
   JUNIOR SUBORDINATED DEBENTURES
 
     The obligations of the Company under the Guarantee issued for the benefit
of the holders of Capital Securities, as well as under the Junior Subordinated
Debentures, will be unsecured and rank subordinate and junior in right of
payment to all Senior Indebtedness. In addition, in the case of a bankruptcy or
insolvency proceeding, the Company's obligations under the Guarantee will also
rank subordinate and junior in right of payment to all liabilities (other than
Other Guarantees) of the Company. At December 31, 1996, the aggregate principal
amount of outstanding Senior Indebtedness was approximately $6.6 million.
Because the Company is a bank holding company, the right of the Company to
participate in any distribution of assets of any subsidiary upon such
subsidiary's liquidation or reorganization or otherwise (and thus the ability of
holders of the Capital Securities to benefit indirectly from such distribution)
is subject to the prior claims of creditors of that subsidiary, except to the
extent that the Company may itself be recognized as a creditor of that
subsidiary. At December 31, 1996, the subsidiaries of the Company had total
liabilities (excluding liabilities owed to the Company) of approximately $1.1
billion. Accordingly, the Junior Subordinated Debentures will be effectively
subordinated to all existing and future liabilities of the Company's
subsidiaries, and holders of Junior Subordinated Debentures should look only to
the assets of the Company for payments on the Junior Subordinated Debentures.
None of the Indenture, the Guarantee or the Trust Agreement places any
limitation on the amount of secured or unsecured debt, including Senior
Indebtedness, that may be incurred by the Company. See "Description of New
Securities-Description of New Guarantee-Status of New Guarantee" and "-
Description of New Junior Subordinated Debentures-Subordination."
 
     The ability of the Trust to pay amounts due on the Capital Securities is
solely dependent upon the Company making payments on the Junior Subordinated
Debentures as and when required.
 
OPTION TO EXTEND INTEREST PAYMENT PERIOD; TAX CONSIDERATIONS
 
     So long as no Debenture Event of Default (as defined herein) shall have
occurred and be continuing, the Company will have the right under the Indenture
to defer payments of interest on the Junior Subordinated Debentures at any time
or from time to time for a period not exceeding 10 consecutive semi-annual
periods with respect to each Extension Period, provided that no Extension Period
may extend beyond the Stated Maturity Date. As a consequence of any such
deferral, semi-annual Distributions on the Capital Securities by the Trust will
be deferred (and the amount of Distributions to which holders of the Capital
Securities are entitled will accumulate additional Distributions thereon at the
rate of 9.65% per annum, compounded semi-annually, but not exceeding the
interest rate then accruing on the Junior Subordinated Debentures) from the
relevant payment date for such Distributions during any such Extension Period.
 
     Prior to the termination of any such Extension Period, the Company may
further extend such Extension Period, provided that such extension does not
cause such Extension Period to exceed 10 consecutive semi-annual periods or to
extend beyond the Stated Maturity Date. Upon the termination of any Extension
Period and the payment of all interest then accrued and unpaid on the Junior
Subordinated Debentures (together with interest thereon at the annual rate of
9.65%, compounded semi-annually, to the extent permitted by applicable law), the
Company may elect to begin a new Extension Period, subject to the above
requirements. There is no limitation on the number of times that the Company may
elect to begin an Extension Period. See "Description of New Securities-
Description of New Capital Securities-Distributions" and "-Description of New
Junior Subordinated Debentures-Option to Extend Interest Payment Date."
 
     Should the Company exercise its right to defer payments of interest on the
Junior Subordinated Debentures, each holder of Trust Securities will be required
to accrue income (as original issue discount ("OID")) in respect of the deferred
stated interest allocable to its Trust Securities for United States federal
income tax purposes, which will be allocated but not distributed to holders of
Trust Securities. As a result, each such holder of Capital Securities will
recognize income for United States federal income tax purposes in advance of the
receipt of cash and will not receive the cash related to such income from the
Trust if the holder disposes of the Capital Securities prior to the record date
for the payment of

                                       14
<PAGE>
 
Distributions thereafter. See "Certain United States Federal Income Tax
Considerations-Interest Income and Original Issue Discount" and "-Sales of
Capital Securities."
 
     Should the Company elect to exercise its right to defer payments of
interest on the Junior Subordinated Debentures in the future, the market price
of the Capital Securities is likely to be affected. A holder that disposes of
its Capital Securities during an Extension Period, therefore, might not receive
the same return on its investment as a holder that continues to hold its Capital
Securities. In addition, the mere existence of the Company's right to defer
payments of interest on the Junior Subordinated Debentures may cause the market
price of the Capital Securities to be more volatile than the market prices of
other securities that are not subject to such deferrals.
 
TAX EVENT REDEMPTION; POSSIBLE TAX LAW CHANGES AFFECTING THE CAPITAL SECURITIES

     Prior to January 15, 2007, upon the occurrence and continuation of a Tax
Event (as defined under "Description of New Securities-Description of New Junior
Subordinated Debentures-Special Event Prepayment"), the Company will have the
right to prepay the Junior Subordinated Debentures in whole (but not in part) at
the Special Event Prepayment Price within 90 days following the occurrence of
such Tax Event and therefore cause a mandatory redemption of the Trust
Securities at the Special Event Redemption Price. The exercise of such right is
subject to the Company having received prior approval of the Federal Reserve to
do so if then required under applicable guidelines or policies of the Federal
Reserve. See "Description of New Securities-Description of New Capital
Securities-Redemption."
 
     On February 6, 1997, as part of the Clinton Administration's Fiscal 1998
Budget Proposal, the Treasury Department proposed legislation (the "Proposed
Legislation") which would, among other things, generally deny corporate issuers
a deduction for interest in respect of certain debt obligations, such as the New
Junior Subordinated Debentures, issued on or after the date of "first committee
action," if such debt obligations had a maximum term in excess of 15 years and
are not shown as indebtedness on the issuer's applicable consolidated balance
sheet. The Proposed Legislation has not yet been introduced by any member of the
105th Congress. If the Proposed Legislation or any other legislation is enacted
by Congress, such enactment may give rise to a Tax Event, in which event the
Company, upon approval of the Federal Reserve if then required under applicable
capital guidelines or policies of the Federal Reserve, would be permitted to
cause a redemption of the Trust Securities at the Special Event Redemption Price
by electing to prepay the Junior Subordinated Debentures at the Special Event
Prepayment Price. See "Description of Capital Securities-Description of New
Capital Securities-Redemption," "-Description of New Junior Subordinated
Debentures-Special Event Prepayment" and "Certain Federal Income Tax
Considerations-Proposed Tax Legislation."
 
POSSIBLE ADVERSE EFFECT ON MARKET PRICES
 
     There can be no assurance as to the market prices for the New Capital
Securities or New Junior Subordinated Debentures distributed to the holders of
New Capital Securities if a termination of the Trust were to occur. Accordingly,
the New Capital Securities or the New Junior Subordinated Debentures may trade
at a discount from the price that the investor paid to purchase the New Capital
Securities. Because holders of Capital Securities may receive Junior
Subordinated Debentures in liquidation of the Trust and because Distributions
are otherwise limited to payments on the Junior Subordinated Debentures,
prospective purchasers of New Capital Securities are also making an investment
decision with regard to the New Junior Subordinated Debentures and should
carefully review all the information regarding the New Junior Subordinated
Debentures contained herein. See "Description of New Securities-Description of
New Junior Subordinated Debentures."
 
RIGHTS UNDER THE GUARANTEE
 
     The Bank of New York will act as Guarantee Trustee and will hold the
Guarantee for the benefit of the holders of the Capital Securities. The Bank of
New York will also act as Property Trustee and as Debenture Trustee under the
Indenture. The Bank of New York (Delaware) will act as Delaware Trustee under
the Trust Agreement. The Old Guarantee guarantees, and the New Guarantee will
guarantee, as the case may be, to the holders of the Capital Securities the
following payments, to the extent not paid by the Trust: (i) any accumulated and
unpaid Distributions required to be paid on the Capital Securities, to the
extent that the Trust has funds on hand legally available therefor at such time,
(ii) the applicable Redemption Price with respect to any Capital Securities
called for redemption, to the extent that the Trust has funds on hand legally
available therefor at such time, and (iii) upon a voluntary or involuntary
termination and liquidation of the Trust (unless the Junior Subordinated
Debentures are distributed to holders of the Capital Securities), the lesser of
(a) the aggregate of the Liquidation Amount and all accumulated and unpaid
Distributions to the date of 

                                       15
<PAGE>
 
payment, to the extent that the Trust has funds on hand legally available
therefor at such time and (b) the amount of assets of the Trust remaining
available for distribution to holders of the Capital Securities upon a
termination and liquidation of the Trust. The holders of a majority in
Liquidation Amount of the Capital Securities will have the right to direct the
time, method and place of conducting any proceeding for any remedy available to
the Guarantee Trustee in respect of the Guarantee or to direct the exercise of
any trust power conferred upon the Guarantee Trustee. Any holder of the Capital
Securities may institute a legal proceeding directly against the Company to
enforce its rights under the Guarantee without first instituting a legal
proceeding against the Trust, the Guarantee Trustee or any other person or
entity. If the Company defaults on its obligation to pay amounts payable under
the Junior Subordinated Debentures, the Trust will not have sufficient funds for
the payment of Distributions or amounts payable on liquidation of the Trust or
redemption of the Capital Securities or otherwise, and, in such event, holders
of the Capital Securities will not be able to rely upon the Guarantee for
payment of such amounts. Instead, in the event a Debenture Event of Default
shall have occurred and be continuing and such event is attributable to the
failure of the Company to pay principal of (or premium, if any) or interest on
the Junior Subordinated Debentures on the payment date on which such payment is
due and payable, then a holder of Capital Securities may institute a legal
proceeding directly against the Company for enforcement of payment to such
holder of the principal of (or premium, if any) or interest on such Junior
Subordinated Debentures having a principal amount equal to the Liquidation
Amount of the Capital Securities of such holder (a "Direct Action").
Notwithstanding any payments made to a holder of Capital Securities by the
Company in connection with a Direct Action, the Company shall remain obligated
to pay the principal of (and premium, if any) and interest on the Junior
Subordinated Debentures, and the Company shall be subrogated to the rights of
the holder of such Capital Securities with respect to payments on the Capital
Securities to the extent of any payments made by the Company to such holder in
any Direct Action. Except as described herein, holders of Capital Securities
will not be able to exercise directly any other remedy available to the holders
of the Junior Subordinated Debentures or to assert directly any other rights in
respect of the Junior Subordinated Debentures. See "Description of New
Securities-Description of New Junior Subordinated Debentures-Enforcement of
Certain Rights by Holders of Capital Securities," "-Description of New Junior
Subordinated Debentures-Debenture Events of Default" and "-Description of New
Guarantee." The Trust Agreement provides that each holder of Capital Securities
by acceptance thereof agrees to the provisions of the Indenture.
 
LIMITED VOTING RIGHTS
 
     Holders of Capital Securities will generally have limited voting rights
relating only to the modification of the Capital Securities, the termination or
liquidation of the Trust, and the exercise of the Trust's rights as holder of
Junior Subordinated Debentures. Holders of Capital Securities will not be
entitled to vote to appoint, remove or replace the Property Trustee or the
Delaware Trustee, and such voting rights are vested exclusively in the holder of
the Common Securities except upon the occurrence of certain events described
herein. The Property Trustee, the Administrative Trustees and the Company may
amend the Trust Agreement without the consent of holders of Capital Securities
to ensure that the Trust will be classified for United States federal income tax
purposes as a grantor trust even if such action adversely affects the interests
of such holders. See "Description of New Securities-Description of New Capital
Securities-Voting Rights; Amendment of the Trust Agreement" and "-Removal of
Issuer Trustees."
 
CONSEQUENCES OF A FAILURE TO EXCHANGE OLD CAPITAL SECURITIES
 
     The Old Capital Securities have not been registered under the Securities
Act or any state securities laws and therefore may not be offered, sold or
otherwise transferred except in compliance with the registration requirements of
the Securities Act and any other applicable securities laws, or pursuant to an
exemption therefrom or in a transaction not subject thereto, and in each case in
compliance with certain other conditions and restrictions. Old Capital
Securities which remain outstanding after consummation of the Exchange Offer
will continue to bear a legend reflecting such restrictions on transfer. In
addition, upon consummation of the Exchange Offer, holders of Old Capital
Securities which remain outstanding will not be entitled to any rights to have
such Old Capital Securities registered under the Securities Act or to any
similar rights under the Registration Rights Agreement (subject to certain
limited exceptions). The Company and the Trust do not intend to register under
the Securities Act any Old Capital Securities which remain outstanding after
consummation of the Exchange Offer (subject to such limited exceptions, if
applicable). To the extent that Old Capital Securities are tendered and accepted
in the Exchange Offer, a holder's ability to sell untendered Old Capital
Securities could be adversely affected.
 
     The New Capital Securities and any Old Capital Securities which remain
outstanding after consummation of the Exchange Offer will vote together as a
single class for purposes of determining whether holders of the requisite
percentage in outstanding Liquidation Amount thereof have taken certain actions
or exercised certain rights under the

                                       16
<PAGE>
 
Trust Agreement. See "Description of New Securities-Description of New Capital
Securities-Voting Rights; Amendment of the Trust Agreement."
 
     The Old Capital Securities provide, among other things, that, if a
registration statement relating to the Exchange Offer has not been filed by July
4, 1997 and declared effective by August 3, 1997, the Distribution rate borne by
the Old Capital Securities commencing on August 4, 1997 will increase by 0.25%
per annum until the Exchange Offer is consummated. Upon consummation of the
Exchange Offer, holders of Old Capital Securities will not be entitled to any
increase in the Distribution rate thereon or any further registration rights
under the Registration Rights Agreement, except under limited circumstances. See
"Description of Old Capital Securities."
 
ABSENCE OF PUBLIC MARKET
 
     The Old Capital Securities were issued to, and the Company believes the Old
Capital Securities are currently owned by, a relatively small number of
beneficial owners. The Old Capital Securities have not been registered under the
Securities Act and will be subject to restrictions on transferability if they
are not exchanged for the New Capital Securities. Although the New Capital
Securities generally may be resold or otherwise transferred by the holders (who
are not Affiliates of the Company or the Trust) without compliance with the
registration requirements under the Securities Act, they will constitute a new
issue of securities with no established trading market. Old Capital Securities
may be transferred by the holders thereof only in blocks having a Liquidation
Amount of not less than $100,000 (100 Old Capital Securities). New Capital
Securities may be transferred by the holders thereof in blocks having a
Liquidation Amount of $1,000 (one New Capital Security) or integral multiples
thereof. The Company and the Trust have been advised by the Initial Purchasers
that the Initial Purchasers presently intend to make a market in the New Capital
Securities. However, the Initial Purchasers are not obligated to do so and any
market-making activity with respect to the New Capital Securities may be
discontinued at any time without notice. In addition, such market-making
activity will be subject to the limits imposed by the Securities Act and the
Exchange Act and may be limited during the Exchange Offer. Accordingly, no
assurance can be given that an active public or other market will develop for
the New Capital Securities or the Old Capital Securities or as to the liquidity
of or the trading market for the New Capital Securities or the Old Capital
Securities. If an active public market does not develop, the market price and
liquidity of the New Capital Securities may be adversely affected.
 
     If a public trading market develops for the New Capital Securities, future
trading prices will depend on many factors, including, among other things,
prevailing interest rates, the Company's results and the market for similar
securities. Depending on prevailing interest rates, the market for similar
securities and other factors, including the financial condition of the Company,
the New Capital Securities may trade at a discount.
 
     Notwithstanding the registration of the New Capital Securities in the
Exchange Offer, holders who are Affiliates of the Company or the Trust may
publicly offer for sale or resell the New Capital Securities only in compliance
with the provisions of Rule 144 under the Securities Act.
 
     Each broker-dealer that receives New Capital Securities for its own account
in exchange for Old Capital Securities, where such Old Capital Securities were
acquired by such broker-dealer as a result of market-making activities or other
trading activities, must acknowledge that it will deliver a prospectus in
connection with any resale of such New Capital Securities. See "Plan of
Distribution."

                                       17
<PAGE>
 
     
     RATIOS OF EARNINGS TO COMBINED FIXED CHARGES AND PREFERRED DIVIDENDS
     
 
     The following table sets forth the ratios of earnings to combined fixed
charges and preferred dividends of the Company for the respective periods
indicated.
  
                                                 YEARS ENDED DECEMBER 31,
                                           -------------------------------------
                                            1996    1995    1994    1993   1992
                                           ------  ------  ------  ------  -----

Ratio of Earnings to Combined Fixed 
Charges and Preferred Dividends:

   Excluding interest on deposits........  41.06x  63.39x  90.50x  16.55x  5.84x

   Including interest on deposits........   1.72x   1.67x   1.87x   1.76x  1.47x

     For purposes of computing the ratios of earnings to combined fixed charges
and preferred dividends, earnings represent net income (loss) before
extraordinary items and cumulative effect of changes in accounting principles,
plus applicable income taxes and fixed charges. Fixed charges, excluding
interest on deposits, include gross interest expense (other than on deposits)
and the proportion deemed representative of the interest factor of rent expense,
net of income from subleases. Fixed charges, including gross interest on
deposits, include all interest expense and the proportion deemed representative
of the interest factor of rent expense, net of income from subleases. Preferred
dividends represent the amount of pre-tax earnings required to cover any
preferred stock dividend requirements.

                                USE OF PROCEEDS

     Neither the Company nor the Trust will receive any cash proceeds from the
issuance of the New Capital Securities. In consideration for issuing the New
Capital Securities in exchange for Old Capital Securities as described in this
Prospectus, the Trust will receive Old Capital Securities in like Liquidation
Amount. The Old Capital Securities surrendered in exchange for the New Capital
Securities will be retired and canceled.

     The proceeds to the Trust (without giving effect to expenses of the
offering payable by the Company) from the offering of the Old Capital Securities
was $25,000,000. All of the proceeds from the sale of Old Capital Securities
were invested by the Trust in the Old Junior Subordinated Debentures. The
Company intends that the net proceeds from the sale of the Old Junior
Subordinated Debentures will be used for general corporate purposes, which may
include, but not be limited to, one or more of the following: investments in and
advances to the Company's subsidiary; financing of future acquisitions of
financial institutions, as well as banking and other assets; and purchases of
the Company's common stock. The precise amount and timing of the application of
such net proceeds for such corporate purposes will depend on the funding
requirements and the availability of other funds to the Company and its
subsidiary. Pending application by the Company of the net proceeds of such sale
from time to time for the intended corporate purposes as stated above, such net
proceeds may be temporarily invested in short-term interest bearing securities.

     The Capital Securities will be eligible to qualify as Tier 1 Capital under
the capital guidelines of the Federal Reserve.

                                       18
<PAGE>
 
                                 CAPITALIZATION

     The following table sets forth the audited consolidated capitalization of
the Company as of December 31, 1996, as adjusted to give effect to the issuance
of the Old Securities. The following data should be read in conjunction with the
financial information included in the Company's 1996 Annual Report on Form 10-K
which is incorporated herein by reference. See "Incorporation of Certain
Documents by Reference." The issuance of the New Securities in the Exchange
Offer will have no effect on the capitalization of the Company.

<TABLE>
<CAPTION>
 
                                                           DECEMBER 31, 1996
                                                         -----------------------
                                                                         AS
                                                           ACTUAL     ADJUSTED
                                                         ---------- ------------
                                                             (IN THOUSANDS)
<S>                                                      <C>          <C>
Long-term borrowings...................................   $  6,636    $  6,636
Company-Obligated Mandatory Redeemable Capital           
 Securities of Subsidiary Trust Holding Solely Junior
 Subordinated Debentures of the Company................         --      25,000
Stockholders' equity:
 Common stock-$1.00 par value-7,500,000 shares        
  authorized, 6,400,338 shares issued..................      6,400       6,400
 Capital surplus.......................................     36,218      36,218
 Retained earnings.....................................     68,742      68,742
 Unrealized securities gains, net of tax...............        736         736
                                                          --------    --------
  Total stockholders' equity...........................    112,096     112,096
                                                          --------    --------
  Total capitalization.................................   $118,732    $143,732
                                                          ========    ======== 
</TABLE>

                                       19
<PAGE>
 
                            SUMMARY FINANCIAL DATA

     The summary below should be read in connection with the financial
information included in the Company's 1996 Annual Report on Form 10-K.
<TABLE>
<CAPTION>
                                                             YEARS ENDED DECEMBER 31,
                                            -------------------------------------------------------
                                                1996       1995       1994       1993       1992
                                            -----------  --------  ----------  --------  ----------
                                                   (DOLLARS IN THOUSANDS, EXCEPT PER SHARE)
<S>                                         <C>          <C>        <C>        <C>        <C>      
INCOME STATEMENT DATA:
Net interest income                         $   53,784   $ 43,689   $ 38,936   $ 32,971   $ 30,041
Provision for possible loan losses                 994        855        380        251        700
                                            ----------   --------   --------   --------   --------
Net interest income after provision for 
  possible loan losses                          52,790     42,834     38,556     32,720     29,341
Noninterest income                              14,999     12,500     11,218     10,547      8,612
Noninterest expense                             43,270     34,932     31,631     29,151     26,792
                                            ----------   --------   --------   --------   --------
Income before income taxes, 
  extraordinary items &                 
  cumulative effect of changes 
  in accounting principles                      24,519     20,402     18,143     14,116     11,161
Income tax expense                              (9,431)    (7,563)    (6,546)    (3,962)    (2,206)
                                            ----------   --------   --------   --------   --------
Income (Loss) before extraordinary 
  items & cumulative effect of change 
  in accounting principles                      15,088     12,839     11,597     10,154      8,955
Extraordinary items, net of tax                     --         --         --         --      2,206
Cumulative effect of change in 
  accounting principles                             --         --         --      1,318         --
Net income                                  $   15,088   $ 12,839   $ 11,597   $ 11,472   $ 11,161
                                            ==========   ========   ========   ========   ======== 

PER SHARE DATA (PRIMARY AND FULLY DILUTED):
  Income before extraordinary items & 
  cumulative effect of change in 
  accounting principles...................  $     2.33   $   2.01   $   1.80   $   1.77   $   1.70
  Net income..............................        2.33       2.01       1.80       2.01       2.17
  Book value..............................       17.52      15.80      13.21      12.27       9.94
  Cash dividends declared.................        0.34       0.29       0.25       0.21       0.05
Average common stock and common stock        
  equivalents (in thousands)..............       6,483      6,391      6,400      5,513      4,717

AVERAGE BALANCE SHEET DATA:
Loans.....................................  $  710,115   $577,887   $493,300   $412,306   $350,882
Total earning assets......................   1,015,932    851,238    761,993    657,882    611,279
Total assets..............................   1,150,987    963,967    865,413    743,637    690,097
Deposits..................................   1,032,045    862,219    778,194    666,933    617,970
Note payable..............................          --         --         --      3,000     10,500
Long-term borrowings......................       1,560        216         --         --         82
Stockholders' equity......................     102,806     90,870     80,789     67,354     51,728
 
</TABLE>
RECENT DEVELOPMENTS

     The discussion of recent developments contains forward-looking statements
within the meaning of the Private Securities Litigation Reform Act of 1995.
Actual results could differ materially from those projected in such forward-
looking statements.

     Effective January 3, 1997, the Company sold its money order business
conducted through its subsidiary National Express Corporation. Under the terms
of the sale, the Company received an initial payment of $600,000, with
contingent payments of $250,000 to be received in each of 1998 and 1999 based
upon certain levels of business retained by the purchaser. The sale was 
accounted for as a disposal of a segment of a business. Consequently, the 
expected net gain from the disposal will be recognized in the Company's 
consolidated statement of income when the final proceeds are received. The 
operations of National Express Corporation were not material in relation to the
consolidated operations of the Company.

                              BFC CAPITAL TRUST I

     The Trust is a statutory business trust formed under Delaware law pursuant
to (i) the Trust Agreement executed by the Company, as Sponsor, The Bank of New
York, as Property Trustee, The Bank of New York (Delaware), as Delaware Trustee,
and the three Administrative Trustees named therein, and (ii) the filing of a
certificate of trust with the Delaware Secretary of State on January 28, 1997.
The Trust exists for the purposes of (i) issuing and selling the Trust
Securities, (ii) using the proceeds from the sale of Trust Securities to acquire
the Junior Subordinated Debentures and, (iii) engaging in only those other
activities necessary, advisable or incidental thereto (such as registering the
transfer of the Trust Securities). Accordingly, the Junior Subordinated
Debentures will be the sole assets of the Trust, and payments

                                       20
<PAGE>
 
under the Junior Subordinated Debentures will be the sole revenues of the Trust.
All of the Common Securities are owned by the Company. The Common Securities
will rank pari passu, and payments will be made thereon pro rata, with the
Capital Securities, except that upon the occurrence and continuance of an event
of default under the Trust Agreement resulting from a Debenture Event of
Default, the rights of the Company as holder of the Common Securities to
payments in respect of Distributions and payments upon liquidation, redemption
or otherwise will be subordinated to the rights of the holders of the Capital
Securities. See "Description of New Securities-Description of New Capital
Securities-Subordination of Common Securities." The Company has acquired Common
Securities in a Liquidation Amount equal to at least 3% of the total capital of
the Trust. The Trust has a term of approximately 31 years, but may terminate
earlier as provided in the Trust Agreement. The Trust's business and affairs are
conducted by its trustees, each appointed by the Company as holder of the Common
Securities. The trustees for the Trust are The Bank of New York, as the Property
Trustee (the "Property Trustee"), The Bank of New York (Delaware), as the
Delaware Trustee (the "Delaware Trustee"), and three individual trustees (the
"Administrative Trustees") who are employees or officers of or affiliated with
the Company (collectively, the "Issuer Trustees"). The Bank of New York, as
Property Trustee, will act as sole indenture trustee under the Trust Agreement.
The Bank of New York will also act as indenture trustee under the Guarantee and
the Indenture. See "Description of New Securities-Description of New Guarantee"
and "-Description of New Junior Subordinated Debentures." The holder of the
Common Securities of the Trust or, if an Event of Default under the Trust
Agreement has occurred and is continuing, the holders of a majority in
Liquidation Amount of the Capital Securities will be entitled to appoint, remove
or replace the Property Trustee and/or the Delaware Trustee. In no event will
the holders of the Capital Securities have the right to vote to appoint, remove
or replace the Administrative Trustees; such voting rights will be vested
exclusively in the holder of the Common Securities. The duties and obligations
of each Issuer Trustee are governed by the Trust Agreement. The Company will pay
all fees, expenses, debts and obligations (other than the Trust Securities)
related to the Trust and the offering and exchange of the Capital Securities and
will pay, directly or indirectly, all ongoing costs, expenses and liabilities of
the Trust. The principal executive office of the Trust is c/o BancFirst
Corporation, 101 North Broadway, Suite 200, Oklahoma City, Oklahoma 73102.
    
ACCOUNTING TREATMENT FOR THE TRUST

     For financial reporting purposes, the Trust is treated as a subsidiary of
the Company and, accordingly, the accounts of the Trust are included in the
consolidated financial statements of the Company. The New Capital Securities
will be presented as a separate line item in the consolidated balance sheet of
the Company and appropriate disclosures about the New Capital Securities, the
New Guarantee and the New Junior Subordinated Debentures will be included in the
notes to the consolidated financial statements. For financial reporting
purposes, the Company will record Distributions payable on the Capital
Securities as a charge in the consolidated statement of income.       

                             BANCFIRST CORPORATION

     The Company is a registered bank holding company organized in 1984 under
Oklahoma law. It conducts substantially all of its operating activities through
its wholly-owned subsidiary, BancFirst, a state-chartered, Federal Reserve
member bank headquartered in Oklahoma City, Oklahoma. Through BancFirst, the
Company provides a full range of commercial banking services to retail customers
and small to medium-sized businesses both in the non-metropolitan trade centers
of Oklahoma and the metropolitan markets of Oklahoma City, Tulsa, Norman,
Muskogee and Shawnee.

     As of December 31, 1996, on a consolidated basis, the Company had total
assets of $1.2 billion, total deposits of $1.1 billion and total stockholders'
equity of $112.0 million. BancFirst maintained 49 banking locations serving 28
communities across central and eastern Oklahoma as of December 31, 1996. The
Company's primary lending activity is the financing of business and industry in
its market areas. As of December 31, 1996, the Company employed, in the
aggregate, approximately 788 full-time equivalent employees.

                              THE EXCHANGE OFFER

PURPOSE OF THE EXCHANGE OFFER

     In connection with the sale of the Old Capital Securities, the Company and
the Trust entered into the Registration Rights Agreement with the Initial
Purchasers, pursuant to which the Company and the Trust agreed to file and to
use their best efforts to cause to become effective with the Commission a
registration statement with respect to the exchange of the Old Capital
Securities for the New Capital Securities. A copy of the Registration Rights
Agreement has been filed as an exhibit to the Registration Statement of which
this Prospectus is a part.

     The Exchange Offer is being made to satisfy the contractual obligations of
the Company and the Trust under the Registration Rights Agreement. The form and
terms of the New Capital Securities are the same as the form and terms of the
Old Capital Securities, except that the New Capital Securities have been
registered under the Securities Act and will not be subject to the $100,000
minimum Liquidation Amount transfer restriction and certain other restrictions
on transfer applicable to the Old Capital Securities and will not provide for
any increase in the distribution rate thereon. In that regard, the Old Capital
Securities provide, among other things, that, if a registration statement
relating to the 

                                       21
<PAGE>
 
Exchange Offer has not been filed by July 4, 1997 and declared effective by
August 3, 1997, the distribution rate borne by the Old Capital Securities
commencing on August 4, 1997 will increase by 0.25% per annum until the Exchange
Offer is consummated. Upon consummation of the Exchange Offer, holders of Old
Capital Securities will not be entitled to any increase in the distribution rate
thereon or any further registration rights under the Registration Rights
Agreement, except under limited circumstances. See "Risk Factors-Consequences of
a Failure to Exchange Old Capital Securities" and "Description of Old Capital
Securities."

     The Exchange Offer is not being made to, nor will the Trust accept tenders
for exchange from, holders of Old Capital Securities in any jurisdiction in
which the Exchange Offer or the acceptance thereof would not be in compliance
with the securities or blue sky laws of such jurisdiction.

     Unless the context requires otherwise, the term "holder" with respect to
the Exchange Offer means any person in whose name the Old Capital Securities are
registered on the books of the Trust or any other person who has obtained a
properly completed bond power from such holder, or any person whose Old Capital
Securities are held of record by The Depository Trust Company ("DTC") who
desires to deliver such Old Capital Securities by book-entry transfer at DTC.

     Pursuant to the Exchange Offer, the Company will also exchange the Old
Junior Subordinated Debentures, in an amount corresponding to the Old Capital
Securities accepted for exchange, for a like aggregate principal amount of the
New Junior Subordinated Debentures. Promptly after the Expiration Date, the
Company will execute the New Guarantee for the benefit of the holders from time
to time of the New Capital Securities. The New Guarantee and New Junior
Subordinated Debentures have been registered under the Securities Act.

TERMS OF THE EXCHANGE OFFER

     The Trust hereby offers, upon the terms and subject to the conditions set
forth in this Prospectus and in the accompanying Letter of Transmittal, to
exchange up to $25,000,000 aggregate Liquidation Amount of New Capital
Securities for a like aggregate Liquidation Amount of Old Capital Securities
properly tendered on or prior to the Expiration Date and not properly withdrawn
in accordance with the procedures described below. The Trust will issue,
promptly after the Expiration Date, an aggregate Liquidation Amount of up to
$25,000,000 of New Capital Securities in exchange for a like principal amount of
outstanding Old Capital Securities tendered and accepted in connection with the
Exchange Offer. Holders may tender their Old Capital Securities in whole or in
part in a Liquidation Amount of not less than $100,000 (100 Capital Securities)
or any integral multiple of $1,000 Liquidation Amount (one Capital Security) in
excess thereof.

     The Exchange Offer is not conditioned upon any minimum Liquidation Amount
of Old Capital Securities being tendered. As of the date of this Prospectus,
$25,000,000 aggregate Liquidation Amount of the Old Capital Securities is
outstanding.

     Holders of Old Capital Securities do not have any appraisal or dissenters'
rights in connection with the Exchange Offer. Old Capital Securities which are
not tendered for or are tendered but not accepted in connection with the
Exchange Offer will remain outstanding and be entitled to the benefits of the
Trust Agreement, but will not be entitled to any further registration rights
under the Registration Rights Agreement, except under limited circumstances. See
"Risk Factors-Consequences of a Failure to Exchange Old Capital Securities" and
"Description of Old Securities."

     If any tendered Old Capital Securities are not accepted for exchange
because of an invalid tender, the occurrence of certain other events set forth
herein or otherwise, certificates for any such unaccepted Old Capital Securities
will be returned, without expense, to the tendering holder thereof promptly
after the Expiration Date.

     Holders who tender Old Capital Securities in connection with the Exchange
Offer will not be required to pay brokerage commissions or fees or, subject to
the instructions in the Letter of Transmittal, transfer taxes with respect to
the exchange of Old Capital Securities in connection with the Exchange Offer.
The Company will pay all charges and expenses, other than certain applicable
taxes described below, in connection with the Exchange Offer. See "-Fees and
Expenses."

     NEITHER THE COMPANY, THE BOARD OF DIRECTORS OF THE COMPANY NOR ANY ISSUER
TRUSTEE OF THE TRUST MAKES ANY RECOMMENDATION TO HOLDERS OF OLD CAPITAL
SECURITIES 

                                       22
<PAGE>
 
AS TO WHETHER TO TENDER OR REFRAIN FROM TENDERING ALL OR ANY PORTION OF THEIR
OLD CAPITAL SECURITIES PURSUANT TO THE EXCHANGE OFFER. IN ADDITION, NO ONE HAS
BEEN AUTHORIZED TO MAKE ANY SUCH RECOMMENDATION. HOLDERS OF OLD CAPITAL
SECURITIES MUST MAKE THEIR OWN DECISION WHETHER TO TENDER PURSUANT TO THE
EXCHANGE OFFER AND, IF SO, THE AGGREGATE AMOUNT OF OLD CAPITAL SECURITIES TO
TENDER BASED ON SUCH HOLDERS' OWN FINANCIAL POSITION AND REQUIREMENTS.
        
     The term "Expiration Date" means 5:00 p.m., New York City time, on August
1, 1997 unless the Exchange Offer is extended by the Company or the Trust (in
which case the term "Expiration Date" shall mean the latest date and time to
which the Exchange Offer is extended).      

     The Company and the Trust expressly reserve the right in their sole and
absolute discretion, subject to applicable law, at any time and from time to
time, (i) to delay the acceptance of the Old Capital Securities for exchange,
(ii) to terminate the Exchange Offer (whether or not any Old Capital Securities
have theretofore been accepted for exchange) if the Trust determines, in its
sole and absolute discretion, that any of the events or conditions referred to
under "-Conditions to the Exchange Offer" have occurred or exist or have not
been satisfied, (iii) to extend the Expiration Date of the Exchange Offer and
retain all Old Capital Securities tendered pursuant to the Exchange Offer,
subject, however, to the right of holders of Old Capital Securities to withdraw
their tendered Old Capital Securities as described under "-Withdrawal Rights,"
and (iv) to waive any condition or otherwise amend the terms of the Exchange
Offer in any respect. If the Exchange Offer is amended in a manner determined by
the Company and the Trust to constitute a material change, or if the Company and
the Trust waive a material condition of the Exchange Offer, the Company and the
Trust will promptly disclose such amendment by means of a prospectus supplement
that will be distributed to the holders of the Old Capital Securities, and the
Company and the Trust will extend the Exchange Offer to the extent required by
Rule 14e-1 under the Exchange Act.

     Any such delay in acceptance, extension, termination or amendment will be
followed promptly by oral or written notice thereof to the Exchange Agent and by
making a public announcement thereof, and such announcement in the case of an
extension will be made no later than 9:00 a.m., New York City time, on the next
business day after the previously scheduled Expiration Date. Without limiting
the manner in which the Company and the Trust may choose to make any public
announcement and subject to applicable law, the Company and the Trust shall have
no obligation to publish, advertise or otherwise communicate any such public
announcement other than by issuing a release to an appropriate news agency.

ACCEPTANCE FOR EXCHANGE AND ISSUANCE OF NEW CAPITAL SECURITIES

     Upon the terms and subject to the conditions of the Exchange Offer, the
Trust will exchange, and will issue to the Exchange Agent, New Capital
Securities for Old Capital Securities validly tendered and not withdrawn
promptly after the Expiration Date.

     In all cases, delivery of New Capital Securities in exchange for Old
 Capital Securities tendered and accepted for exchange pursuant to the Exchange
 Offer will be made only after timely receipt by the Exchange Agent of (i) Old
 Capital Securities or a book-entry confirmation of a book-entry transfer of Old
 Capital Securities into the Exchange Agent's account at DTC, (ii) the Letter of
 Transmittal (or facsimile thereof), properly completed and duly executed, with
 any required signature guarantees, and (iii) any other documents required by
 the Letter of Transmittal.

     The term "book-entry confirmation" means a timely confirmation of a book-
entry transfer of Old Capital Securities into the Exchange Agent's account at
DTC.

     Subject to the terms and conditions of the Exchange Offer, the Trust will
be deemed to have accepted for exchange, and thereby exchanged, Old Capital
Securities validly tendered and not withdrawn as, if and when the Trust gives
oral or written notice to the Exchange Agent of the Trust's acceptance of such
Old Capital Securities for exchange pursuant to the Exchange Offer. The Exchange
Agent will act as agent for the Trust for the purpose of receiving tenders of
Old Capital Securities, Letters of Transmittal and related documents, and as
agent for tendering holders for the purpose of receiving Old Capital Securities,
Letters of Transmittal and related documents and transmitting New Capital
Securities to validly tendering holders. Such exchange will be made promptly
after the Expiration Date. If for any reason whatsoever, acceptance for exchange
or the exchange of any Old Capital Securities tendered pursuant to the Exchange
Offer is delayed (whether before or after the Trust's acceptance for exchange of
Old Capital Securities) or the Trust 

                                       23
<PAGE>
 
extends the Exchange Offer or is unable to accept for exchange or exchange Old
Capital Securities tendered pursuant to the Exchange Offer, then, without
prejudice to the Trust's rights set forth herein, the Exchange Agent may,
nevertheless, on behalf of the Trust and subject to Rule 14e-1(c) under the
Exchange Act, retain tendered Old Capital Securities and such Old Capital
Securities may not be withdrawn except to the extent tendering holders are
entitled to withdrawal rights as described under "-Withdrawal Rights."

     Pursuant to the Letter of Transmittal, a holder of Old Capital Securities
will warrant and agree in the Letter of Transmittal that it has full power and
authority to tender, exchange, sell, assign and transfer Old Capital Securities,
that the Trust will acquire good, marketable and unencumbered title to the
tendered Old Capital Securities, free and clear of all liens, restrictions,
charges and encumbrances, and the Old Capital Securities tendered for exchange
are not subject to any adverse claims or proxies. The holder also will warrant
and agree that it will, upon request, execute and deliver any additional
documents deemed by the Trust or the Exchange Agent to be necessary or desirable
to complete the exchange, sale, assignment, and transfer of the Old Capital
Securities tendered pursuant to the Exchange Offer.

PROCEDURES FOR TENDERING OLD CAPITAL SECURITIES

     VALID TENDER. Except as set forth below, in order for Old Capital
Securities to be validly tendered pursuant to the Exchange Offer, a properly
completed and duly executed Letter of Transmittal (or facsimile thereof), with
any required signature guarantees and any other required documents, must be
received by the Exchange Agent at one of its addresses set forth under "-
Exchange Agent," and either (i) tendered Old Capital Securities must be received
by the Exchange Agent, or (ii) such Old Capital Securities must be tendered
pursuant to the procedures for book-entry transfer set forth below and a book-
entry confirmation must be received by the Exchange Agent, in each case on or
prior to the Expiration Date, or (iii) the guaranteed delivery procedures set
forth below must be complied with.

     If less than all of the Old Capital Securities are tendered, a tendering
holder should fill in the amount of Old Capital Securities being tendered in the
appropriate box on the Letter of Transmittal. The entire amount of Old Capital
Securities delivered to the Exchange Agent will be deemed to have been tendered
unless otherwise indicated.

     THE METHOD OF DELIVERY OF CERTIFICATES, THE LETTER OF TRANSMITTAL AND ALL
OTHER REQUIRED DOCUMENTS IS AT THE OPTION AND SOLE RISK OF THE TENDERING HOLDER,
AND DELIVERY WILL BE DEEMED MADE ONLY WHEN ACTUALLY RECEIVED BY THE EXCHANGE
AGENT. IF DELIVERY IS BY MAIL, REGISTERED MAIL, RETURN RECEIPT REQUESTED,
PROPERLY INSURED, OR AN OVERNIGHT DELIVERY SERVICE IS RECOMMENDED. IN ALL CASES,
SUFFICIENT TIME SHOULD BE ALLOWED TO ENSURE TIMELY DELIVERY.

     Book Entry Transfer. The Exchange Agent will establish an account with
respect to the Old Capital Securities at DTC for purposes of the Exchange Offer
within two business days after the date of this Prospectus. Any financial
institution that is a participant in DTC's book-entry transfer facility system
may make a book-entry delivery of the Old Capital Securities by causing DTC to
transfer such Old Capital Securities into the Exchange Agent's account at DTC in
accordance with DTC's procedures for transfers. However, although delivery of
Old Capital Securities may be effected through book-entry transfer into the
Exchange Agent's account at DTC, the Letter of Transmittal (or facsimile
thereof), properly completed and duly executed, with any required signature
guarantees and any other required documents, must in any case be delivered to
and received by the Exchange Agent at its address set forth under "-Exchange
Agent" on or prior to the Expiration Date, or the guaranteed delivery procedure
set forth below must be complied with.

     DELIVERY OF DOCUMENTS TO DTC IN ACCORDANCE WITH DTC'S PROCEDURES DOES NOT
CONSTITUTE DELIVERY TO THE EXCHANGE AGENT.

     SIGNATURE GUARANTEES. Certificates for the Old Capital Securities need not
be endorsed and signature guarantees on the Letter of Transmittal are
unnecessary unless (a) a certificate for the Old Capital Securities is
registered in a name other than that of the person surrendering the certificate
or (b) such holder completes the box entitled "Special Issuance Instructions" or
"Special Delivery Instructions" in the Letter of Transmittal. In the case of (a)
or (b) above, such certificates for Old Capital Securities must be duly endorsed
or accompanied by a properly executed bond power, with the endorsement or
signature on the bond power and on the Letter of Transmittal guaranteed by a
firm or other entity identified in Rule 17Ad-15 under the Exchange Act as an
"eligible guarantor institution," including (as such terms are defined therein):
(i) a bank; (ii) a broker, dealer, municipal securities broker or dealer or
government securities broker or dealer; (iii) a credit union; (iv) a national
securities exchange, registered securities association or clearing agency; or

                                       24
<PAGE>
 
(v) a savings association that is a participant in a Securities Transfer
Association (each of the foregoing, an Eligible Institution"), unless
surrendered on behalf of such Eligible Institution. See Instruction 1 to the
Letter of Transmittal.

     GUARANTEED DELIVERY. If a holder desires to tender Old Capital Securities
pursuant to the Exchange Offer and the certificates for such Old Capital
Securities are not immediately available or time will not permit all required
documents to reach the Exchange Agent on or prior to the Expiration Date, or the
procedure for book-entry transfer cannot be completed on a timely basis, such
Old Capital Securities may nevertheless be tendered, provided that all of the
following guaranteed delivery procedures are complied with:

     (a) such tenders are made by or through an Eligible Institution;

     (b) a properly completed and duly executed Notice of Guaranteed Delivery,
         substantially in the form accompanying the Letter of Transmittal, is
         received by the Exchange Agent, as provided below, on or prior to the
         Expiration Date; and

     (c) the certificates (or a book-entry confirmation) representing all
         tendered Old Capital Securities, in proper form for transfer, together
         with a properly completed and duly executed Letter of Transmittal (or
         facsimile thereof), with any required signature guarantees and any
         other documents required by the Letter of Transmittal, are received by
         the Exchange Agent within three New York Stock Exchange trading days
         after the date of execution of such Notice of Guaranteed Delivery.
 
     The Notice of Guaranteed Delivery may be delivered by hand, or transmitted
by facsimile or mail to the Exchange Agent and must include a guarantee by an
Eligible Institution in the form set forth in such notice.

     Notwithstanding any other provision hereof, the delivery of New Capital
Securities in exchange for Old Capital Securities tendered and accepted for
exchange pursuant to the Exchange Offer will in all cases be made only after
timely receipt by the Exchange Agent of Old Capital Securities, or of a book-
entry confirmation with respect to such Old Capital Securities, and a properly
completed and duly executed Letter of Transmittal (or facsimile thereof),
together with any required signature guarantees and any other documents required
by the Letter of Transmittal. Accordingly, the delivery of New Capital
Securities might not be made to all tendering holders at the same time, and will
depend upon when Old Capital Securities, book-entry confirmations with respect
to Old Capital Securities and other required documents are received by the
Exchange Agent.

     The Trust's acceptance for exchange of Old Capital Securities tendered
pursuant to any of the procedures described above will constitute a binding
agreement between the tendering holder and the Trust upon the terms and subject
to the conditions of the Exchange Offer.

     DETERMINATION OF VALIDITY. All questions as to the form of documents,
validity, eligibility (including time of receipt) and acceptance for exchange of
any tendered Old Capital Securities will be determined by the Company and the
Trust, in their sole discretion, whose determination shall be final and binding
on all parties. The Company and the Trust reserve the absolute right, in their
sole and absolute discretion, to reject any and all tenders determined by them
not to be in proper form or the acceptance of which, or exchange for, may, in
the opinion of counsel to the Company and the Trust, be unlawful. The Company
and the Trust also reserve the absolute right, subject to applicable law, to
waive any of the conditions of the Exchange Offer as set forth under "-
Conditions to the Exchange Offer" or any condition or irregularity in any tender
of Old Capital Securities of any particular holder whether or not similar
conditions or irregularities are waived in the case of other holders.

     The interpretation by the Company and the Trust of the terms and conditions
of the Exchange Offer (including the Letter of Transmittal and the instructions
thereto) will be final and binding. No tender of Old Capital Securities will be
deemed to have been validly made until all irregularities with respect to such
tender have been cured or waived. Neither the Company, the Trust, any affiliates
or assigns of the Company or the Trust, the Exchange Agent nor any other person
shall be under any duty to give any notification of any irregularities in
tenders or incur any liability for failure to give any such notification.

     If any Letter of Transmittal, endorsement, bond power, power of attorney,
or any other document required by the Letter of Transmittal is signed by a
trustee, executor, administrator, guardian, attorney-in-fact, officer of a
corporation or other person acting in a fiduciary or representative capacity,
such person should so indicate when signing, and unless 

                                       25
<PAGE>
 
waived by the Company and the Trust, proper evidence satisfactory to the Company
and the Trust, in their sole discretion, of such person's authority to so act
must be submitted.

     A beneficial owner of Old Capital Securities that are held by or registered
in the name of a broker, dealer, commercial bank, trust company or other nominee
or custodian is urged to contact such entity promptly if such beneficial holder
wishes to participate in the Exchange Offer.

RESALES OF NEW CAPITAL SECURITIES

     The Trust is making the Exchange Offer for the New Capital Securities in
reliance on the position of the Staff as set forth in certain interpretive
letters addressed to third parties in other transactions. However, neither the
Company nor the Trust sought its own interpretive letter and there can be no
assurance that the Staff would make a similar determination with respect to the
Exchange Offer as it has in such interpretive letters to third parties. Based on
these interpretations by the Staff, and subject to the two immediately following
sentences, the Company and the Trust believe that New Capital Securities issued
pursuant to this Exchange Offer in exchange for Old Capital Securities may be
offered for resale, resold and otherwise transferred by a holder thereof (other
than a holder who is a broker-dealer) without further compliance with the
registration and prospectus delivery requirements of the Securities Act,
provided that such New Capital Securities are acquired in the ordinary course of
such holder's business and that such holder is not participating, and has no
arrangement or understanding with any person to participate, in a distribution
(within the meaning of the Securities Act) of such New Capital Securities.
However, any holder of Old Capital Securities who is an Affiliate of the Company
or the Trust or who intends to participate in the Exchange Offer for the purpose
of distributing New Capital Securities, or any broker-dealer who purchased Old
Capital Securities from the Trust for resale pursuant to Rule 144A or any other
available exemption under the Securities Act, (a) will not be able to rely on
the interpretations of the Staff set forth in the above-mentioned interpretive
letters, (b) will not be permitted or entitled to tender such Old Capital
Securities in the Exchange Offer and (c) must comply with the registration and
prospectus delivery requirements of the Securities Act in connection with any
sale or other transfer of such Old Capital Securities unless such sale is made
pursuant to an exemption from such requirements. In addition, as described
below, if any broker-dealer holds Old Capital Securities acquired for its own
account as a result of market-making or other trading activities and exchanges
such Old Capital Securities for New Capital Securities, then such broker-dealer
must deliver a prospectus meeting the requirements of the Securities Act in
connection with any resales of such New Capital Securities.

     Each holder of Old Capital Securities who wishes to exchange Old Capital
Securities for New Capital Securities in the Exchange Offer will be required to
represent that (i) it is not an Affiliate of the Company or the Trust, (ii) any
New Capital Securities to be received by it are being acquired in the ordinary
course of its business, (iii) it has no arrangement or understanding with any
person to participate in a distribution (within the meaning of the Securities
Act) of such New Capital Securities, and (iv) if such holder is not a broker-
dealer, such holder is not engaged in, and does not intend to engage in, a
distribution (within the meaning of the Securities Act) of such New Capital
Securities. In addition, the Company and the Trust may require such holder, as a
condition to such holder's eligibility to participate in the Exchange Offer, to
furnish to the Company and the Trust (or an agent thereof) in writing
information as to the number of "beneficial owners" (within the meaning of Rule
13d-3 under the Exchange Act) on behalf of whom such holder holds the Capital
Securities to be exchanged in the Exchange Offer. Each broker-dealer that
receives New Capital Securities for its own account pursuant to the Exchange
Offer must acknowledge that it acquired the Old Capital Securities for its own
account as the result of market-making activities or other trading activities
and must agree that it will deliver a prospectus meeting the requirements of the
Securities Act in connection with any resale of such New Capital Securities. The
Letter of Transmittal states that, by so acknowledging and by delivering a
prospectus, a broker-dealer will not be deemed to admit that it is an
"underwriter" within the meaning of the Securities Act. Based on the position
taken by the Staff in the interpretive letters referred to above, the Company
and the Trust believe that Participating Broker-Dealers who acquired Old Capital
Securities for their own accounts as a result of market-making activities or
other trading activities may fulfill their prospectus delivery requirements with
respect to the New Capital Securities received upon exchange of such Old Capital
Securities (other than Old Capital Securities which represent an unsold
allotment from the original sale of the Old Capital Securities) with a
prospectus meeting the requirements of the Securities Act, which may be the
prospectus prepared for an exchange offer so long as it contains a description
of the plan of distribution with respect to the resale of such New Capital
Securities. Accordingly, this Prospectus, as it may be amended or supplemented
from time to time, may be used by a Participating Broker-Dealer during the
period referred to below in connection with resales of New Capital Securities
received in exchange for Old Capital Securities where such Old Capital
Securities were acquired by such Participating Broker-Dealer for its own account
as a result of market-making or other trading activities. Subject 

                                       26
<PAGE>
 
to certain provisions set forth in the Registration Rights Agreement, the
Company and the Trust have agreed that this Prospectus, as it may be amended or
supplemented from time to time, may be used by a Participating Broker-Dealer in
connection with resales of such New Capital Securities for a period ending 90-
days after the Expiration Date (subject to extension under certain limited
circumstances described below) or, if earlier, when all such New Capital
Securities have been disposed of by such Participating Broker-Dealer. See "Plan
of Distribution." However, a Participating Broker-Dealer who intends to use this
Prospectus in connection with the resale of New Capital Securities received in
exchange for Old Capital Securities pursuant to the Exchange Offer must notify
the Company or the Trust, or cause the Company or the Trust to be notified, on
or prior to the Expiration Date, that it is a Participating Broker-Dealer. Such
notice may be given in the space provided for that purpose in the Letter of
Transmittal or may be delivered to the Exchange Agent at one of the addresses
set forth herein under "-Exchange Agent." Any Participating Broker-Dealer who is
an Affiliate of the Company or the Trust may not rely on such interpretive
letters and must comply with the registration and prospectus delivery
requirements of the Securities Act in connection with any resale transaction.

     In that regard, each Participating Broker-Dealer who surrenders Old Capital
Securities pursuant to the Exchange Offer will be deemed to have agreed, by
execution of the Letter of Transmittal, that, upon receipt of notice from the
Company or the Trust of the occurrence of any event or the discovery of any fact
which makes any statement contained or incorporated by reference in this
Prospectus untrue in any material respect or which causes this Prospectus to
omit to state a material fact necessary in order to make the statements
contained or incorporated by reference herein, in light of the circumstances
under which they were made, not misleading or of the occurrence of certain other
events specified in the Registration Rights Agreement, such Participating 
Broker-Dealer will suspend the sale of New Capital Securities (or the New
Guarantee or the New Junior Subordinated Debentures, as applicable) pursuant to
this Prospectus until the Company or the Trust has amended or supplemented this
Prospectus to correct such misstatement or omission and has furnished copies of
the amended or supplemented Prospectus to such Participating Broker-Dealer or
the Company or the Trust has given notice that the sale of the New Capital
Securities (or the New Guarantee or the New Junior Subordinated Debentures, as
applicable) may be resumed, as the case may be. If the Company or the Trust
gives such notice to suspend the sale of the New Capital Securities (or the New
Guarantee or the New Junior Subordinated Debentures, as applicable), it shall
extend the 90-day period-referred to above during which Participating Broker-
Dealers are entitled to use this Prospectus in connection with the resale of New
Capital Securities by the number of days during the period from and including
the date of the giving of such notice to and including the date when
Participating Broker-Dealers shall have received copies of the amended or
supplemented Prospectus necessary to permit resales of the New Capital
Securities or to and including the date on which the Company or the Trust has
given notice that the sale of New Capital Securities (or the New Guarantee or
the New Junior Subordinated Debentures, as applicable) may be resumed, as the
case may be.

WITHDRAWAL RIGHTS

     Except as otherwise provided herein, tenders of Old Capital Securities may
be withdrawn at any time on or prior to the Expiration Date.

     In order for a withdrawal to be effective, a written or facsimile
transmission of such notice of withdrawal must be timely received by the
Exchange Agent at one of its addresses set forth under "-Exchange Agent" on or
prior to the Expiration Date. Any such notice of withdrawal must specify the
name of the person who tendered the Old Capital Securities to be withdrawn, the
aggregate principal amount of Old Capital Securities to be withdrawn, and (if
certificates for such Old Capital Securities have been tendered) the name of the
registered holder of the Old Capital Securities as set forth on the Old Capital
Securities, if different from that of the person who tendered such Old Capital
Securities. If Old Capital Securities have been delivered or otherwise
identified to the Exchange Agent, then prior to the physical release of such Old
Capital Securities, the tendering holder must submit the serial numbers shown on
the particular Old Capital Securities to be withdrawn and the signature on the
notice of withdrawal must be guaranteed by an Eligible Institution, except in
the case of Old Capital Securities tendered for the account of an Eligible
Institution. If Old Capital Securities have been tendered pursuant to the
procedures for book-entry transfer set forth in "-Procedures for Tendering Old
Capital Securities," the notice of withdrawal must specify the name and number
of the account at DTC to be credited with the withdrawal of Old Capital
Securities, in which case a notice of withdrawal will be effective if delivered
to the Exchange Agent by written or facsimile transmission. Withdrawals of
tenders of Old Capital Securities may not be rescinded. Old Capital Securities
properly withdrawn will not be deemed validly tendered for purposes of the
Exchange Offer, but may be retendered at any subsequent time on or prior to the
Expiration Date by following any of the procedures described above under "-
Procedures for Tendering Old Capital Securities."

                                       27
<PAGE>
 
        All questions as to the validity, form and eligibility (including time
of receipt) of such withdrawal notices will be determined by the Trust, in its
sole discretion, whose determination shall be final and binding on all parties.
Neither the Company, the Trust, any affiliates or assigns of the Company or the
Trust, the Exchange Agent nor any other person shall be under any duty to give
any notification of any irregularities in any notice of withdrawal or incur any
liability for failure to give any such notification. Any Old Capital Securities
which have been tendered but which are withdrawn will be returned to the holder
thereof promptly after withdrawal.

DISTRIBUTIONS ON NEW CAPITAL SECURITIES
            
        The payment of Distributions accumulated from and including
February 4, 1997 will be made on July 15, 1997 to the holders of the Old Capital
Securites as they appear on the books and records of the Trust on July 1, 1997, 
the record date for the payment of Distributions on July 15, 1997. Holders of 
Old Capital Securities whose Old Capital Securities are accepted for exchange 
will not receive subsequent Distributions on such Old Capital Securities but, 
rather, will be entitled to Distributions on the New Capital Securities 
accumulated from and after July 15, 1997, payable semi-annually in arrears 
commencing January 15, 1998.      

CONDITIONS TO THE EXCHANGE OFFER

        Notwithstanding any other provisions of the Exchange Offer, or any
extension of the Exchange Offer, the Company and the Trust will not be required
to accept for exchange, or to exchange, any Old Capital Securities for any New
Capital Securities, and, as described below, may terminate the Exchange Offer
(whether or not any Old Capital Securities have theretofore been accepted for
exchange) or may waive any conditions to or amend the Exchange Offer, if any of
the following conditions has occurred or exists or has not been satisfied:

        (a) there shall occur a change in the current interpretation by the
            Staff which permits the New Capital Securities issued pursuant to
            the Exchange Offer in exchange for Old Capital Securities to be
            offered for resale, resold and otherwise transferred by holders
            thereof (other than broker-dealers and any such holder which is an
            Affiliate of the Company or the Trust) without compliance with the
            registration and prospectus delivery provisions of the Securities
            Act provided that such New Capital Securities are acquired in the
            ordinary course of such holders' business and such holders have no
            arrangement or understanding with any person to participate in the
            distribution of such New Capital Securities; or

        (b) any law, statute, rule or regulation shall have been adopted or
            enacted which, in the judgment of the Company or the Trust, would
            reasonably be expected to impair its ability to proceed with the
            Exchange Offer; or

        (c) a stop order shall have been issued by the Commission or any state
            securities authority suspending the effectiveness of the
            Registration Statement or proceedings shall have been initiated or,
            to the knowledge of the Company or the Trust, threatened for that
            purpose or any governmental approval has not been obtained, which
            approval the Company or the Trust shall, in its sole discretion,
            deem necessary for the consummation of the Exchange Offer as
            contemplated hereby.

        If the Company or the Trust determines in its sole and absolute
discretion that any of the foregoing events or conditions has occurred or exists
or has not been satisfied, it may, subject to applicable law, terminate the
Exchange Offer (whether or not any Old Capital Securities have theretofore been
accepted for exchange) or may waive any such condition or otherwise amend the
terms of the Exchange Offer in any respect. If such waiver or amendment
constitutes a material change to the Exchange Offer, the Company or the Trust
will promptly disclose such waiver or amendment by means of a prospectus
supplement that will be distributed to the registered holders of the Old Capital
Securities and will extend the Exchange Offer to the extent required by Rule 
14e-1 under the Exchange Act.

EXCHANGE AGENT

        The Bank of New York has been appointed as Exchange Agent for the
Exchange Offer. Delivery of the Letters of Transmittal and any other required
documents, questions, requests for assistance, and requests for additional
copies of this Prospectus or of the Letter of Transmittal should be directed to
the Exchange Agent as follows:

                                       28
<PAGE>
 
   BY REGISTERED OR CERTIFIED MAIL:             BY HAND OR OVERNIGHT DELIVERY:
   -------------------------------              -----------------------------
       The Bank of New York                        The Bank of New York
      101 Barclay Street, 7E                      101 Barclay Street, 7E
     New York, New York 10286                    New York, New York 10286
 Attention:  Reorganization Department,   Attention:  Reorganization Department,
          George Johnson                              George Johnson
 
                             CONFIRM BY TELEPHONE:
                                (212) 815-4997

                           FACSIMILE TRANSMISSIONS:
                         (Eligible Institutions Only)
                                (212) 571-3080

        Delivery to other than the above addresses or facsimile number will not
constitute a valid delivery.

FEES AND EXPENSES

        The Company has agreed to pay the Exchange Agent reasonable and
customary fees for its services and will reimburse it for its reasonable out-
of-pocket expenses in connection therewith. The Company will also pay brokerage
houses and other custodians, nominees and fiduciaries the reasonable out-of-
pocket expenses incurred by them in forwarding copies of this Prospectus and
related documents to the beneficial owners of Old Capital Securities, and in
handling or tendering for their customers.

        Holders who tender their Old Capital Securities for exchange will not be
obligated to pay any transfer taxes in connection therewith. If, however, New
Capital Securities are to be delivered to, or are to be issued in the name of,
any person other than the registered holder of the Old Capital Securities
tendered, or if a transfer tax is imposed for any reason other than the exchange
of Old Capital Securities in connection with the Exchange Offer, then the amount
of any such transfer taxes (whether imposed on the registered holder or any
other persons) will be payable by the tendering holder. If satisfactory evidence
of payment of such taxes or exemption therefrom is not submitted with the Letter
of Transmittal, the amount of such transfer taxes will be billed directly to
such tendering holder.

        Neither the Company nor the Trust will make any payment to brokers,
dealers or other nominees soliciting acceptances of the Exchange Offer.

                         DESCRIPTION OF NEW SECURITIES

DESCRIPTION OF NEW CAPITAL SECURITIES

        Pursuant to the terms of the Trust Agreement, the Trust has issued the
Old Capital Securities and the Common Securities and will issue the New Capital
Securities pursuant to the Exchange Offer. The New Capital Securities will
represent preferred beneficial interests in the Trust and the holders of the New
Capital Securities and the Old Capital Securities will be entitled to a
preference over the Common Securities in certain circumstances with respect to
Distributions and amounts payable on redemption of the Trust Securities or
liquidation of the Trust. See "-Subordination of Common Securities." The Trust
Agreement has been qualified under the Trust Indenture Act of 1939, as amended
(the "Trust Indenture Act"). This summary of certain provisions of the New
Capital Securities and the Trust Agreement does not purport to be complete and
is subject to, and is qualified in its entirety by reference to, all the
provisions of the Trust Agreement, including the definitions therein of certain
terms.

        GENERAL. The Capital Securities (including the Old Capital Securities
and the New Capital Securities) are limited to $25,000,000 aggregate Liquidation
Amount at any one time outstanding. The New Capital Securities will rank pari
passu, and payments will be made thereon pro rata, with the Old Capital
Securities and the Common Securities except as described under "-Subordination
of Common Securities." Legal title to the Junior Subordinated Debentures will be
held by the Property Trustee in trust for the benefit of the holders of the
Capital Securities and Common Securities. The New Guarantee will be a guarantee
on a subordinated basis but will not guarantee payment of  

                                       29
<PAGE>
 
Distributions or amounts payable on redemption of the New Capital Securities or
on liquidation of the Trust when the Trust does not have funds on hand legally
available for such payments. See "-Description of New Guarantee."
    
        DISTRIBUTIONS. Distributions on the New Capital Securities will be
cumulative, will accumulate from and after July 15, 1997 and will be payable
semi-annually in arrears on January 15 and July 15 of each year, commencing
January 15, 1998, at the annual rate of 9.65% of the Liquidation Amount to the
holders of the New Capital Securities on the relevant record dates. The record
dates will be the first day of the month in which the relevant Distribution Date
(as defined below) falls. The amount of Distributions payable for any period
will be computed on the basis of a 360-day year of twelve 30-day months. In the
event that any date on which Distributions are payable on the New Capital
Securities is not a Business Day (as defined below), payment of the Distribution
payable on such date will be made on the next succeeding day that is a Business
Day (and without any interest or other payment in respect to any such delay), 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 the foregoing, a
"Distribution Date"). A "Business Day" shall mean any day other than a Saturday
or a Sunday, or a day on which banking institutions in The City of New York or
Oklahoma City, Oklahoma are authorized or required by law or executive order to
remain closed.      

        So long as no Debenture Event of Default shall have occurred and be
continuing, the Company will have the right under the Indenture to defer the
payment of interest on the New Junior Subordinated Debentures at any time or
from time to time for a period not exceeding 10 consecutive semi-annual periods
with respect to each Extension Period, provided that no Extension Period may
extend beyond the Stated Maturity Date. Upon any such election, semi-annual
Distributions on the New Capital Securities will be deferred by the Trust during
any such Extension Period. Distributions to which holders of the New Capital
Securities are entitled during any such Extension Period will accumulate
additional Distributions thereon at the rate per annum of 9.65% thereof,
compounded semi-annually from the relevant Distribution Date, but not exceeding
the interest rate then accruing on the New Junior Subordinated Debentures. The
term "Distributions," as used herein, shall include any such additional
Distributions.

        Prior to the termination of any Extension Period, the Company may
further extend such Extension Period, provided that such extension does not
cause such Extension Period to exceed 10 consecutive semi-annual periods or to
extend beyond the Stated Maturity Date. Upon the termination of any such
Extension Period and the payment of all amounts then due, and subject to the
foregoing limitations, the Company may elect to begin a new Extension Period.
The Company must give the Property Trustee, the Administrative Trustees and the
Debenture Trustee notice of its election of any such Extension Period at least
five Business Days prior to the earlier of (i) the date the Distributions on the
New Capital Securities would have been payable except for the election to begin
such Extension Period or (ii) the date the Administrative Trustees are required
to give notice to any securities exchange or to holders of such New Capital
Securities of the record date or the date such Distributions are payable but in
any event not less than five Business Days prior to such record date. There is
no limitation on the number of times that the Company may elect to begin an
Extension Period. See "-Description of New Junior Subordinated Debentures-Option
to Extend Interest Payment Period" and "Certain United States Federal Income Tax
Considerations-Interest Income and Original Issue Discount."

        During any Extension Period, the Company may not (i) declare or pay any
dividends or distributions on, or redeem, purchase, acquire, or make a
liquidation payment with respect to, any of the Company's capital stock (which
includes common and preferred stock) or (ii) make any payment of principal of or
premium, if any, or interest on or repay, repurchase or redeem any debt
securities of the Company (including Other Debentures) that rank pari passu with
or junior in right of payment to the Junior Subordinated Debentures or (iii)
make any guarantee payments with respect to any guarantee by the Company of the
debt securities of any subsidiary of the Company (including Other Guarantees) if
such guarantee ranks pari passu with or junior in right of payment to the Junior
Subordinated Debentures (other than (a) dividends or distributions in shares of,
or options, warrants or rights to subscribe for or purchase shares of, common
stock of the Company, (b) any declaration of a dividend in connection with the
implementation of a stockholders' rights plan, or the issuance of stock under
any such plan in the future, or the redemption or repurchase of any such rights
pursuant thereto, (c) payments under the Guarantee, (d) as a result of a
reclassification of the Company's capital stock or the exchange or conversion of
one class, or series of the Company's capital stock for another class or series
of the Company's capital stock, (e) the purchase of fractional interests in
shares of the Company's capital stock pursuant to the conversion or exchange
provisions of such capital stock or the security being converted or exchanged,
and (f) purchases of common stock related to the issuance of common stock or
rights under any of the Company's benefit plans for its directors, officers or
employees or any of the Company's dividend reinvestment plans).

                                       30
<PAGE>
 
        Although the Company may in the future exercise its option to defer
payments of interest on the New Junior Subordinated Debentures, the Company has
no such current intention.

        The revenue of the Trust available for distribution to holders of the
Capital Securities will be limited to payments under the New Junior Subordinated
Debentures. See "-Description of New Junior Subordinated Debentures-General." If
the Company does not make interest payments on the New Junior Subordinated
Debentures, the Property Trustee will not have funds available to pay
Distributions on the New Capital Securities. The payment of Distributions on the
New Capital Securities (if and to the extent the Trust has funds on hand legally
available for the payment of such Distributions) will be guaranteed by the
Company on a limited basis as set forth herein under "-Description of New
Guarantee."

        REDEMPTION. Upon the repayment on the Stated Maturity Date or prepayment
prior to the Stated Maturity Date of the Junior Subordinated Debentures, the
proceeds from such repayment or prepayment shall be applied by the Property
Trustee to redeem a Like Amount (as defined below) of the Trust Securities, upon
not less than 30 nor more than 60 days notice of a date of redemption (the
"Redemption Date"), at the applicable Redemption Price, which shall be equal to
(i) in the case of the repayment of the Junior Subordinated Debentures on the
Stated Maturity Date, the Maturity Redemption Price (equal to the principal of,
and accrued interest on, the Junior Subordinated Debentures), (ii) in the case,
prior to January 15, 2007, of the optional prepayment of the Junior Subordinated
Debentures upon the occurrence and continuation of a Special Event, the Special
Event Redemption Price (equal to the Special Event Prepayment Price in respect
of the Junior Subordinated Debentures) and (iii) in the case, on or after
January 15, 2007, of the optional prepayment of the Junior Subordinated
Debentures, the Optional Redemption Price (equal to the Optional Prepayment
Price in respect of the Junior Subordinated Debentures). See "-Description of
New Junior Subordinated Debentures-Optional Prepayment" and "-Special Event
Prepayment."

        Like Amount" means (i) with respect to a redemption of the Trust
Securities, Trust Securities having a Liquidation Amount equal to the principal
amount of Junior Subordinated Debentures to be paid in accordance with their
terms and (ii) with respect to a distribution of Junior Subordinated Debentures
upon the liquidation of the Trust, Junior Subordinated Debentures having a
principal amount equal to the Liquidation Amount of the Trust Securities of the
holder to whom such Junior Subordinated Debentures are distributed.

        The Company will have the option to prepay the Junior Subordinated
Debentures, (i) in whole or in part, on or after January 15, 2007, at the
applicable Optional Prepayment Price and (ii) in whole but not in part, prior to
January 15, 2007, upon the occurrence of a Special Event, at the Special Event
Prepayment Price, in each case subject to receipt of prior approval by the
Federal Reserve if then required under applicable capital guidelines or policies
of the Federal Reserve.

        Liquidation of the Trust and Distribution of Junior Subordinated
Debentures. The Company will have the right at any time to terminate the Trust
and cause the Junior Subordinated Debentures to be distributed to the holders of
the Trust Securities in liquidation of the Trust. Such right is subject to (i)
the Company having received an opinion of counsel to the effect that such
distribution will not be a taxable event to holders of Capital Securities and
(ii) the prior approval of the Federal Reserve if then required under applicable
capital guidelines or policies of the Federal Reserve.

        The Trust shall automatically terminate upon the first to occur of: (i)
certain events of bankruptcy, dissolution or liquidation of the Company; (ii)
the distribution of a Like Amount of the Junior Subordinated Debentures to the
holders of the Trust Securities, if the Company, as Sponsor, has given written
direction to the Property Trustee to terminate the Trust (which direction is
optional and, except as described above, wholly within the discretion of the
Company, as Sponsor); (iii) redemption of all of the Trust Securities in
accordance with their terms; (iv) expiration of the term of the Trust; and (v)
the entry of an order for the dissolution of the Trust by a court of competent
jurisdiction.

        If a termination occurs as described in clause (i), (ii), (iv) or (v)
above, the Trust shall be liquidated by the Issuer Trustees as expeditiously as
the Issuer Trustees determine to be possible by distributing, after satisfaction
of liabilities to creditors of the Trust as provided by applicable law, to the
holders of the Trust Securities a Like Amount of the Junior Subordinated
Debentures, unless such distribution is determined by the Property Trustee not
to be practicable, in which event such holders will be entitled to receive out
of the assets of the Trust legally available for distribution to holders, after
satisfaction of liabilities to creditors of the Trust as provided by applicable
law, an amount equal to the aggregate of the Liquidation Amount plus accumulated
and unpaid Distributions thereon to the date of payment (such amount being the
"Liquidation Distribution"). If such Liquidation Distribution can be paid only
in part because the Trust has  

                                       31
<PAGE>
 
insufficient assets on hand legally available to pay in full the aggregate
Liquidation Distribution, then the amounts payable directly by the Trust on the
Capital Securities and the Common Securities shall be paid on a pro rata basis,
except that if a Debenture Event of Default has occurred and is continuing, the
Capital Securities shall have a priority over the Common Securities. See "-
Subordination of Common Securities." If an early termination occurs as described
in clause (v) above, the Junior Subordinated Debentures will be subject to
optional prepayment, in whole but not in part, on or after January 15, 2007.

        If the Corporation elects not to prepay the Junior Subordinated
Debentures prior to maturity in accordance with their terms and either elects
not to or is unable to liquidate the Trust and distribute the Junior
Subordinated Debentures to holders of the Trust Securities, the Trust Securities
will remain outstanding until the repayment of the Junior Subordinated
Debentures on the Stated Maturity Date.

        After the liquidation date is fixed for any distribution of Junior
Subordinated Debentures to holders of the Trust Securities, (i) the Trust
Securities will no longer be deemed to be outstanding, (ii) each registered
global certificate, if any, representing Trust Securities and held by DTC or its
nominee will be exchanged for a registered global certificate or certificates
representing the Junior Subordinated Debentures to be delivered upon such
distribution and (iii) any certificates representing Trust Securities not held
by DTC or its nominee will be deemed to represent Junior Subordinated Debentures
having a principal amount equal to the Liquidation Amount of such Trust
Securities, 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 Administrative Trustees or their agent for
cancellation, whereupon the Company will issue to such holder, and the Debenture
Trustee will authenticate, a certificate representing such Junior Subordinated
Debentures.

        There can be no assurance as to the market prices for the New Capital
Securities or the New Junior Subordinated Debentures that may be distributed in
exchange for the Trust Securities if a termination and liquidation of the Trust
were to occur. Accordingly, the New Capital Securities that an investor may
purchase, or the New Junior Subordinated Debentures that the investor may
receive on termination and liquidation of the Trust, may trade at a discount to
the price that the investor paid to purchase the New Capital Securities offered
hereby.

        Redemption Procedures. If applicable, Trust Securities shall be redeemed
at the applicable Redemption Price with the proceeds from the contemporaneous
repayment or prepayment of the Junior Subordinated Debentures. Any redemption of
Trust Securities shall be made and the applicable Redemption Price shall be
payable on the Redemption Date only to the extent that the Trust has funds
legally available for the payment of such applicable Redemption Price. See also
"-Subordination of Common Securities."

        If the Trust gives a notice of redemption in respect of the Capital
Securities, then, by 12:00 noon, New York City time, on the Redemption Date, to
the extent funds are legally available, with respect to the Capital Securities
held by DTC or its nominees, the Property Trustee will deposit irrevocably with
DTC funds sufficient to pay the applicable Redemption Price. See "-Form,
Denomination, Book-Entry Procedures and Transfer." With respect to the Capital
Securities held in certificated form, the Property Trustee, to the extent funds
are legally available, will irrevocably deposit with the paying agent for the
Capital Securities funds sufficient to pay the applicable Redemption Price and
will give such paying agent irrevocable instructions and authority to pay the
applicable Redemption Price to the holders thereof upon surrender of their
certificates evidencing the Capital Securities. See "-Payment and Paying
Agency." Notwithstanding the foregoing, Distributions payable on or prior to the
Redemption Date shall be payable to the holders of such Capital 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, all rights of the holders of the Capital Securities will
cease, except the right of the holders of the Capital Securities to receive the
applicable Redemption Price, but without interest on such Redemption Price, and
the Capital Securities will cease to be outstanding. In the event that any
Redemption Date of Capital Securities is not a Business Day, then the applicable
Redemption Price payable on such date will be paid on the next succeeding day
that is a Business Day (and without any interest or other payment in respect of
any such delay), in each case with the same force and effect as if made on such
date. In the event that payment of the applicable Redemption Price is improperly
withheld or refused and not paid either by the Trust or by the Company pursuant
to the Guarantee as described under "-Description of New Guarantee,"
Distributions on Capital Securities will continue to accumulate at the then
applicable rate, from the Redemption Date originally established by the Trust to
the date such applicable Redemption Price is actually paid, in which case the
actual payment date will be the Redemption Date for purposes of calculating the
applicable Redemption Price.

                                       32
<PAGE>
 
        Subject to applicable law (including, without limitation, United States
federal securities law), the Company or its subsidiaries may at any time and
from time to time purchase outstanding Capital Securities by tender, in the open
market or by private agreement.

        Notice of any redemption will be mailed at least 30-days but not more
than 60-days prior to the Redemption Date to each holder of Trust Securities at
its registered address. Unless the Company defaults in payment of the applicable
Prepayment Price on, or in the repayment of, the Junior Subordinated Debentures,
Distributions will cease to accrue on the Trust Securities called for redemption
on and after the Redemption Date.

        Subordination of Common Securities. Payment of Distributions on, and the
Redemption Price of, the Capital Securities and Common Securities, as
applicable, shall be made pro rata based on the Liquidation Amount of the
Capital Securities and Common Securities; provided, however, that if on any
Distribution Date or Redemption Date a Debenture Event of Default shall have
occurred and be continuing, no payment of any Distribution on, or applicable
Redemption Price of, any of the Common Securities, 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 on all of the outstanding Capital Securities for all
Distribution periods terminating on or prior thereto, or in the case of payment
of the applicable Redemption Price the full amount of such Redemption Price,
shall have been made or provided for, and all funds available to the Property
Trustee shall first be applied to the payment in full in cash of all
Distributions on, or Redemption Price of, the Capital Securities then due and
payable.

        In the case of any Event of Default, the Company as holder of the Common
Securities will be deemed to have waived any right to act with respect to such
Event of Default until the effect of such Event of Default shall have been
cured, waived or otherwise eliminated. Until any such Event of Default has been
so cured, waived or otherwise eliminated, the Property Trustee shall act solely
on behalf of the holders of the Capital Securities and not on behalf of the
Company as holder of the Common Securities, and only the holders of the Capital
Securities will have the right to direct the Property Trustee to act on their
behalf.

Events of Default; Notice. The occurrence of a Debenture Event of Default (see
"Description of New Junior Subordinated Debentures-Debenture Events of Default")
constitutes an "Event of Default" under the Trust Agreement.

        Within five Business Days after the occurrence of any Event of Default
actually known to the Property Trustee, the Property Trustee shall transmit
notice of such Event of Default to the holders of the Capital Securities, the
Administrative Trustees and the Company, as Sponsor, unless such Event of
Default shall have been cured or waived. The Company, as Sponsor, and the
Administrative Trustees are required to file annually with the Property Trustee
a certificate as to whether or not they are in compliance with all the
conditions and covenants applicable to them under the Trust Agreement.

        If a Debenture Event of Default has occurred and is continuing, the
Capital Securities shall have a preference over the Common Securities as
described under "-Liquidation of the Trust and Distribution of Junior
Subordinated Debentures" and "-Subordination of Common Securities."

        Removal of Issuer Trustees. Unless a Debenture Event of Default shall
have occurred and be continuing, any Issuer Trustee may be removed at any time
by the holder of the Common Securities. If a Debenture Event of Default has
occurred and is continuing, the Property Trustee and the Delaware Trustee may be
removed at such time by the holders of a majority in Liquidation Amount of the
outstanding Capital Securities. In no event will the holders of the Capital
Securities have the right to vote to appoint, remove or replace the
Administrative Trustees, which voting rights are vested exclusively in the
Company as the holder of the Common Securities. No resignation or removal of an
Issuer Trustee and no appointment of a successor trustee shall be effective
until the acceptance of appointment by the successor trustee in accordance with
the provisions of the Trust Agreement.

        Merger or Consolidation of Issuer Trustees. Any corporation into which
the Property Trustee, the Delaware Trustee or any Administrative Trustee that is
not a natural person may be merged or converted or with which it may be
consolidated, or any corporation resulting from any merger, conversion or
consolidation to which such Issuer Trustee shall be a party, or any corporation
succeeding to all or substantially all the corporate trust business of such
Issuer Trustee, shall be the successor of such Issuer Trustee under the Trust
Agreement, provided such corporation shall be otherwise qualified and eligible.

                                       33
<PAGE>
 
        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 as an entirety or
substantially as an entirety to any corporation or other Person, except as
described below. The Trust may, at the request of the Company, as Sponsor, with
the consent of the Administrative Trustees but without the consent of the
holders of the Capital Securities, merge with or into, consolidate, amalgamate,
or be replaced by or convey, transfer or lease its properties and assets as an
entirety or substantially as an entirety to a trust organized as such under the
laws of any State; provided, that (i) such successor entity either (a) expressly
assumes all of the obligations of the Trust with respect to the Capital
Securities or (b) substitutes for the Capital Securities other securities having
substantially the same terms as the Capital Securities (the "Successor
Securities") so long as the Successor Securities rank the same as the Capital
Securities rank in priority with respect to distributions and payments upon
liquidation, redemption and otherwise, (ii) the Company expressly appoints a
trustee of such successor entity possessing the same powers and duties as the
Property Trustee with respect to the Junior Subordinated Debentures, (iii) the
Successor Securities are listed, or any Successor Securities will be listed upon
notification of issuance, on any national securities exchange or other
organization on which Capital Securities are then listed, if any, (iv) such
merger, consolidation, amalgamation, replacement, conveyance, transfer or lease
does not cause the Capital Securities (including any Successor Securities) to be
downgraded by any nationally recognized statistical rating organization, (v)
such merger, consolidation, amalgamation, replacement, conveyance, transfer or
lease does not adversely affect the rights, preferences and privileges of the
holders of the Capital Securities (including any Successor Securities) in any
material respect, (vi) such successor entity has a purpose identical to that of
the Trust, (vii) prior to such merger, consolidation, amalgamation, replacement,
conveyance, transfer or lease, the Company has received an opinion from
independent counsel to the Trust experienced in such matters to the effect that
(a) such merger, consolidation, amalgamation, replacement, conveyance, transfer
or lease does not adversely affect the rights, preferences and privileges of the
holders of the Capital Securities (including any Successor Securities) in any
material respect, and (b) following such merger, consolidation, amalgamation,
replacement, conveyance, transfer or lease, neither the Trust nor such successor
entity will be required to register as an investment company under the
Investment Company Act of 1940, as amended (the "Investment Company Act"), and
(viii) the Company or any permitted successor or assignee 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. Notwithstanding the foregoing, the Trust shall not, except
with the consent of holders of 100% in Liquidation Amount of the Trust
Securities, consolidate, amalgamate, merge with or into, or be replaced by or
convey, transfer or lease its properties and assets as an entirety or
substantially as an entirety to any other entity or permit any other entity to
consolidate, amalgamate, merge with or into, or replace it if such
consolidation, amalgamation, merger, replacement, conveyance, transfer or lease
would cause the Trust or the successor entity not to be classified as a grantor
trust for United States federal income tax purposes.

        Voting Rights; Amendment of the Trust Agreement. Except as provided
below and under "-Mergers, Consolidations, Amalgamations or Replacements of the
Trust" and "-Description of New Guarantee-Amendments and Assignment" and as
otherwise required by law and the Trust Agreement, the holders of the New
Capital Securities will have no voting rights.

        The Trust Agreement may be amended from time to time by the Company, the
Property Trustee and the Administrative Trustees, without the consent of the
holders of the Trust Securities (i) to cure any ambiguity, correct or supplement
any provisions in the Trust Agreement that may be inconsistent with any other
provision, or to make any other provisions with respect to matters or questions
arising under the Trust Agreement, which shall not be inconsistent with the
other provisions of the Trust Agreement, or (ii) to modify, eliminate or add to
any provisions of the Trust Agreement to such extent as shall be necessary to
ensure that the Trust will be classified for United States federal income tax
purposes as a grantor trust at all times that any Trust Securities are
outstanding or to ensure that the Trust will not be required to register as an
"investment company" under the Investment Company Act; provided, however, that
in the case of clause (i), such action shall not adversely affect in any
material respect the interests of the holders of the Trust Securities, and any
amendments of the Trust Agreement shall become effective when notice thereof is
given to the holders of the Trust Securities. The Trust Agreement may be amended
by the Issuer Trustees and the Company (i) with the consent of holders
representing a majority (based upon Liquidation Amount) of the outstanding Trust
Securities, and (ii) upon receipt by the Issuer Trustees of an opinion of
counsel to the effect that such amendment or the exercise of any power granted
to the Issuer Trustees in accordance with such amendment will not affect the
Trust's status as a grantor trust for United States federal income tax purposes
or the Trust's exemption from status as an "investment company" under the
Investment Company Act, provided that, without the consent of each holder of
Trust Securities, the 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  

                                       34
<PAGE>
 
specified date or (ii) restrict the right of a holder of Trust Securities to
institute suit for the enforcement of any such payment on or after such date; it
being understood that the New Capital Securities and any Old Capital Securities
which remain outstanding after consummation of the Exchange Offer will vote
together as a single class for purposes of determining whether holders of the
requisite percentage in outstanding Liquidation Amount thereof have taken
certain actions or exercised certain rights under the Trust Agreement.

        So long as any Junior Subordinated Debentures are held by the Property
Trustee, the Issuer 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 such Property Trustee with respect to
the Junior Subordinated Debentures, (ii) waive certain past defaults under the
Indenture, (iii) exercise any right to rescind or annul a declaration of
acceleration of the maturity of the principal of the Junior Subordinated
Debentures or (iv) consent to any amendment, modification or termination of the
Indenture or the Junior Subordinated Debentures, where such consent shall be
required, without, in each case, obtaining the prior approval of the holders of
a majority in Liquidation Amount of all outstanding Capital Securities;
provided, however, that where a consent under the Indenture would require the
consent of each holder of Junior Subordinated Debentures affected thereby, no
such consent shall be given by the Property Trustee without the prior approval
of each holder of the Capital Securities. The Issuer Trustees shall not revoke
any action previously authorized or approved by a vote of the holders of the
Capital Securities except by subsequent vote of such holders. The Property
Trustee shall notify each holder of Capital Securities of any notice of default
with respect to the Junior Subordinated Debentures. In addition to obtaining the
foregoing approvals of such holders of the Capital Securities, prior to taking
any of the foregoing actions, the Issuer Trustees shall obtain an opinion of
counsel experienced in such matters to the effect that the Trust will not be
classified as an association taxable as a corporation for United States federal
income tax purposes on account of such action.

        Any required approval of holders of Capital Securities may be given at a
meeting of such holders convened for such purpose or pursuant to written
consent. The Property Trustee will cause a notice of any meeting at which
holders of Capital Securities are entitled to vote, or of any matter upon which
action by written consent of such holders is to be taken, to be given to each
holder of record of Capital Securities in the manner set forth in the Trust
Agreement.

        No vote or consent of the holders of Capital Securities will be required
for the Trust to redeem and cancel the Capital Securities in accordance with the
Trust Agreement.

        Notwithstanding that holders of the Capital Securities are entitled to
vote or consent under any of the circumstances described above, any of the
Capital Securities that are owned by the Company, the Issuer Trustees or any
affiliate of the Company or any Issuer Trustees, shall, for purposes of such
vote or consent, be treated as if they were not outstanding.

        Form, Denomination, Book-Entry Procedures and Transfer. The New Capital
Securities may be represented by one or more New Capital Securities in
registered, global form (singly, a "Global New Capital Security," collectively,
the "Global New Capital Securities" and, together with the Old Capital
Securities in registered global form, the "Global Capital Securities"). The
Global New Capital Securities will be deposited upon issuance with the Property
Trustee as custodian for DTC, in New York, New York, and registered in the name
of DTC or its nominee, in each case for credit to an account of a direct or
indirect participant in DTC as described below.

        Except as set forth below, the Global Capital Securities may be
transferred, in whole and not in part, only to another nominee of DTC or to a
successor of DTC or its nominee. Beneficial interests in the Global Capital
Securities may not be exchanged for Capital Securities in certificated form
except in the limited circumstances described below.

        DTC has advised the Trust and the Company that DTC is a limited purpose
trust company created to hold securities for its participating organizations
(collectively, the "Participants") and to facilitate the clearance and
settlement of transactions in those securities between Participants through
electronic book-entry changes in accounts of its Participants. The Participants
include securities brokers and dealers (including the Initial Purchasers),
banks, trust companies, clearing corporations and certain other organizations.
Access to DTC's system is also available to other entities such as banks,
brokers, dealers and trust companies that clear through or maintain a custodial
relationship with a Participant, either directly or indirectly (collectively,
the "Indirect Participants"). Persons who are not Participants may beneficially
own securities held by or on behalf of DTC only through the Participants or the
Indirect Participants. The ownership interest and transfer of ownership interest
of each actual purchaser of each security held by or on behalf of DTC are
recorded on the records of the Participants and Indirect Participants.

                                       35
<PAGE>
 
        DTC has also advised the Trust and the Company that, pursuant to
procedures established by it, (i) upon deposit of the Global Capital Securities,
DTC will credit the accounts of Participants with portions of the Liquidation
Amount of the Global Capital Securities and (ii) ownership of such interests in
the Global Capital Securities will be shown on, and the transfer of ownership
thereof will be effected only through, records maintained by DTC (with respect
to the Participants) or by the Participants and the Indirect Participants (with
respect to other owners of beneficial interests in the Global Capital
Securities).

        Except as described below, owners of beneficial interests in the Global
Capital Securities will not have Capital Securities registered in their name,
will not receive physical delivery of Capital Securities in certificated form
and will not be considered the registered owners or holders thereof under the
Trust Agreement for any purpose.

        Payments in respect of the Global Capital Securities registered in the
name of DTC or its nominee will be payable by the Property Trustee to DTC in its
capacity as the registered holder under the Trust Agreement. Under the terms of
the Trust Agreement, the Property Trustee will treat the persons in whose names
the Capital Securities, including the Global Capital Securities, are registered
as the owners thereof for the purpose of receiving such payments and for any and
all other purposes whatsoever. Consequently, neither the Property Trustee nor
any agent thereof has or will have any responsibility or liability for (i) any
aspect of DTC's records or any Participant's or Indirect Participant's records
relating to or payments made on account of beneficial interests in the Global
Capital Securities, or for maintaining, supervising or reviewing any of DTC's
records or any Participant's or Indirect Participant's records relating to the
beneficial interests in the Global Capital Securities or (ii) any other matter
relating to the actions and practices of DTC or any of its Participants or
Indirect Participants. DTC has advised the Trust and the Company that its
current practice, upon receipt of any payment in respect of securities such as
the Global Capital Securities, is to credit the accounts of the relevant
Participants with the payment on the payment date, in amounts proportionate to
their respective holdings in Liquidation Amount of beneficial interests in the
relevant security as shown on the records of DTC unless DTC has reason to
believe it will not receive payment on such payment date. Payments by the
Participants and the Indirect Participants to the beneficial owners of the
Global Capital Securities will be governed by standing instructions and
customary practices and will be the responsibility of the Participants or the
Indirect Participants and will not be the responsibility of DTC, the Property
Trustee, the Trust or the Company. Neither the Trust or the Company nor the
Property Trustee will be liable for any delay by DTC or any of its Participants
in identifying the beneficial owners of the Global Capital Securities, and the
Trust, the Company and the Property Trustee may conclusively rely on and will be
protected in relying on instructions from DTC or its nominee for all purposes.

        Beneficial interests in the Global Capital Securities will trade in
DTC's Same-Day Funds Settlement System and secondary market trading activity in
such interests will therefore settle in immediately available funds, subject in
all cases to the rules and procedures of DTC and its participants.

        DTC has advised the Trust and the Company that it will take any action
permitted to be taken by a holder of Capital Securities only at the direction of
one or more Participants to whose account with DTC interests in the Global
Capital Securities are credited and only in respect of such portion of the
Liquidation Amount of the Capital Securities as to which such Participant or
Participants has or have given such direction. However, if there is an Event of
Default under the Trust Agreement, DTC reserves the right to exchange the Global
Capital Securities for Capital Securities in certificated form and to distribute
such Capital Securities to its Participants.

        The information in this section concerning DTC and its book-entry system
has been obtained from sources that the Trust and the Company believe to be
reliable, but neither the Trust nor the Company takes responsibility for the
accuracy thereof.

        A Global New Capital Security is exchangeable for New Capital Securities
in registered certificated form if (i) DTC (x) notifies the Trust that it is
unwilling or unable to continue as Depositary for the Global New Capital
Security and the Trust thereupon fails to appoint a successor Depositary within
90- days or (y) has ceased to be a clearing agency registered under the Exchange
Act, (ii) the Company in its sole discretion elects to cause the issuance of the
New Capital Securities in certificated form or (iii) there shall have occurred
and be continuing an Event of Default or any event which after notice or lapse
of time or both would be an Event of Default under the Trust Agreement. In
addition, beneficial interests in a Global New Capital Security may be exchanged
for certificated New Capital Securities upon request but only upon at least 20
days' prior written notice given to the Property Trustee by or on behalf of DTC
in accordance with customary procedures. In all cases, certificated New Capital
Securities delivered in exchange for any Global New Capital Security or
beneficial interests therein will be registered in the names, and issued in any
approved denominations,  

                                       36
<PAGE>
 
requested by or on behalf of the Depositary (in accordance with its customary
procedures), unless the Property Trustee determines otherwise in compliance with
applicable law.

        Payment and Paying Agency. Payments in respect of the New Capital
Securities held in global form shall be made to the Depositary, which shall
credit the relevant accounts at the Depositary on the applicable Distribution
Dates or in respect of the New Capital Securities that are not held by the
Depositary, such payments shall be made by check mailed to the address of the
holder entitled thereto as such address shall appear on the register. The paying
agent (the "Paying Agent") shall initially be the Property Trustee and any co-
paying agent chosen by the Property Trustee and acceptable to the Administrative
Trustees and the Company. The Paying Agent shall be permitted to resign as
Paying Agent upon 30 days' written notice to the Property Trustee and the
Company. In the event that the Property Trustee shall no longer be the Paying
Agent, the Administrative Trustees shall appoint a successor (which shall be a
bank or trust company acceptable to the Administrative Trustees and the Company)
to act as Paying Agent. 

        Registrar and Transfer Agent. The Property Trustee will act as registrar
and transfer agent for the New Capital Securities.

        Registration of transfers of the New Capital Securities will be effected
without charge by or on behalf of the Trust, but upon payment of any tax or
other governmental charges that may be imposed in connection with any transfer
or exchange. The Trust will not be required to register or cause to be
registered the transfer of the New Capital Securities after they have been
called for redemption.

        Information Concerning the Property Trustee. The Property Trustee, other
than during the occurrence and continuance of an Event of Default, undertakes to
perform only such duties as are specifically set forth in the Trust Agreement
and, after such Event of Default, must exercise the same degree of care and
skill as a prudent person would exercise or use in the conduct of his or her own
affairs. Subject to this provision, the Property Trustee is under no obligation
to exercise any of the powers vested in it by the Trust Agreement at the request
of any holder of Trust Securities unless it is offered reasonable indemnity
against the costs, expenses and liabilities that might be incurred thereby. If
no Event of Default has occurred and is continuing and the Property Trustee is
required to decide between alternative causes of action, construe ambiguous
provisions in the Trust Agreement or is unsure of the application of any
provision of the Trust Agreement, and the matter is not one on which holders of
the Capital Securities or the Common Securities are entitled under the Trust
Agreement to vote, then the Property Trustee shall take such action as is
directed by the Company and if not so directed, shall take such action as it
deems advisable and in the best interests of the holders of the Trust Securities
and will have no liability except for its own bad faith, negligence or willful
misconduct.

        Miscellaneous. The Administrative Trustees are authorized and directed
to conduct the affairs of and to operate the Trust in such a way that the Trust
will not be deemed to be an "investment company" required to be registered under
the Investment Company Act or classified as an association taxable as a
corporation for United States federal income tax purposes and so that the Junior
Subordinated Debentures will be treated as indebtedness of the Company for
United States federal income tax purposes. In this connection, the Company and
the Administrative Trustees are authorized to take any action, not inconsistent
with applicable law, the certificate of trust of the Trust or the Trust
Agreement, that the Company and the Administrative Trustees determine in their
discretion to be necessary or desirable for such purposes, as long as such
action does not materially adversely affect the interests of the holders of the
Trust Securities.

        Holders of the Trust Securities have no preemptive or similar rights.

        The Trust may not borrow money, issue debt, execute mortgages or pledge
any of its assets.


DESCRIPTION OF NEW JUNIOR SUBORDINATED DEBENTURES

        The Old Junior Subordinated Debentures were issued, and the New Junior
Subordinated Debentures will be issued, as separate series under the Indenture.
The Indenture has been qualified under the Trust Indenture Act. This summary of
certain terms and provisions of the New Junior Subordinated Debentures and the
Indenture does not purport to be complete, and where reference is made to
particular provisions of the Indenture, such provisions, including the
definitions of certain terms, some of which are not otherwise defined herein,
are qualified in their entirety by reference to all of the provisions of the
Indenture and those terms made a part of the Indenture by the Trust Indenture
Act.

                                       37
<PAGE>
 
        General. Concurrently with the issuance of the Capital Securities, the
Trust invested the proceeds thereof, together with the consideration paid by the
Company for the Common Securities, in Old Junior Subordinated Debentures issued
by the Company. Pursuant to the Exchange Offer, the Company will exchange the
Old Junior Subordinated Debentures, in an amount corresponding to the Old
Capital Securities accepted for exchange, for a like aggregate principal amount
of the New Junior Subordinated Debentures promptly after the Expiration Date.
    
        The New Junior Subordinated Debentures will bear interest at the annual
rate of 9.65% of the principal amount thereof, payable semi-annually in arrears
on January 15 and July 15 of each year (each, an "Interest Payment Date"),
commencing January 15, 1998, to the person in whose name each Junior
Subordinated Debenture is registered, subject to certain exceptions, at the
close of business on the first day of the month in which the relevant payment
date falls. It is anticipated that, until the liquidation, if any, of the Trust,
each Junior Subordinated Debenture, including the New Junior Subordinated
Debentures, will be held in the name of the Property Trustee in trust for the
benefit of the holders of the Trust Securities. The amount of interest payable
for any period will be computed on the basis of a 360-day year of twelve 30-day
months. In the event that any date on which interest is payable on the New
Junior Subordinated Debentures is not a Business Day, then payment of the
interest payable on such date will 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), in each case with the same force and effect as if made such date.
Accrued interest that is not paid on the applicable Interest Payment Date will
bear additional interest on the amount thereof (to the extent permitted by law)
at the rate per annum of 9.65% thereof, compounded semi-annually. The term
"interest," as used herein, shall include semi-annual interest payments,
interest on semi-annual interest payments not paid on the applicable Interest
Payment Date and Additional Sums (as defined below), as applicable.      

        The New Junior Subordinated Debentures will mature on January 15, 2027
(the "Stated Maturity Date"). The New Junior Subordinated Debentures will rank
pari passu with the Old Junior Subordinated Debentures and with all Other
Debentures and will be unsecured and subordinate and junior in right of payment
to the extent and in the manner set forth in the Indenture to all Senior
Indebtedness. See "-Subordination." The Corporation is a non-operating holding
company and almost all of the operating assets of the Company and its
consolidated subsidiaries are owned by such subsidiaries. The Company relies
primarily on dividends from such subsidiaries to meet its obligations. The
Company is a legal entity separate and distinct from its banking and non-banking
affiliates. The principal sources of the Company's income are dividends,
interest and fees from its banking and non-banking affiliates. BancFirst, the
sole bank subsidiary of the Company, is subject to certain restrictions imposed
by federal law on any extensions of credit to, and certain other transactions
with, the Company and certain other affiliates, and on investments in stock or
other securities thereof. Such restrictions prevent the Company and such other
affiliates from borrowing from BancFirst unless the loans are secured by various
types of collateral. Further, such secured loans, other transactions and
investments by BancFirst are generally limited in amount as to the Company and
as to each of such other affiliates to 10% of BancFirst's capital and surplus
and as to the Company and all of such other affiliates to an aggregate of 20% of
BancFirst's capital and surplus. In addition, payment of dividends to the
Company by BancFirst is subject to ongoing review by banking regulators and is
subject to various statutory limitations and in certain circumstances requires
approval by banking regulatory authorities. Because the Company is a holding
company, the right of the Company to participate in any distribution of assets
of any subsidiary upon such subsidiary's liquidation or reorganization or
otherwise, is subject to the prior claims of creditors of the subsidiary, except
to the extent the Company may itself be recognized as a creditor of that
subsidiary. Accordingly, the New Junior Subordinated Debentures will be
effectively subordinated to all existing and future liabilities of the Company's
subsidiaries, and holders of New Junior Subordinated Debentures should look only
to the assets of the Company for payments on the New Junior Subordinated
Debentures. The Indenture does not limit the incurrence or issuance of other
secured or unsecured debt of the Company, including Senior Indebtedness. See "-
Subordination."

        Form, Registration and Transfer. If the New Junior Subordinated
Debentures are distributed to holders of the New Capital Securities, such New
Junior Subordinated Debentures may be represented by one or more global
certificates registered in the name of Cede & Co. as the nominee of DTC. The
depositary arrangements for such New Junior Subordinated Debentures are expected
to be substantially similar to those in effect for the New Capital Securities.
For a description of DTC and the terms of the depositary arrangements relating
to payments, transfers, voting rights, prepayments, notices and other matters,
see "-Description of New Capital Securities-Form, Denomination, Book-Entry
Procedures and Transfer."

        Payment and Paying Agents. Payment of principal of (and premium, if any)
and any interest on New Junior Subordinated Debentures will be made at the
office of the Debenture Trustee in The City of New York or at the office  

                                       38
<PAGE>
 
of such Paying Agent or Paying Agents as the Company may designate from time to
time, except that at the option of the Company payment of any interest may be
made except in the case of New Junior Subordinated Debentures in global form,
(i) by check mailed to the address of the Person entitled thereto as such
address shall appear in the register for New Junior Subordinated Debentures or
(ii) by transfer to an account maintained by the Person entitled thereto as
specified in such register, provided that proper transfer instructions have been
received by the relevant record date. Payment of any interest on any New Junior
Subordinated Debenture will be made to the Person in whose name such New Junior
Subordinated Debenture is registered at the close of business on the record date
for such interest, except in the case of defaulted interest. The Company may at
any time designate additional Paying Agents or rescind the designation of any
Paying Agent; however the Company will at all times be required to maintain a
Paying Agent in each Place of Payment for the New Junior Subordinated
Debentures.

        Any moneys deposited with the Debenture Trustee or any Paying Agent, or
then held by the Company in trust, for the payment of the principal of (and
premium, if any) or interest on any New Junior Subordinated Debenture and
remaining unclaimed for two years after such principal (and premium, if any) or
interest has become due and payable shall, at the request of the Company, be
repaid to the Company and the holder of such New Junior Subordinated Debenture
shall thereafter look, as a general unsecured creditor, only to the Company for
payment thereof.

        Option to Extend Interest Payment Date. So long as no Debenture Event of
Default has occurred and is continuing, the Company will have the right under
the Indenture at any time during the term of the Junior Subordinated Debentures
to defer the payment of interest at any time or from time to time for a period
not exceeding 10 consecutive semi-annual periods with respect to each Extension
Period, provided that no Extension Period may extend beyond the Stated Maturity
Date. At the end of such Extension Period, the Company must pay all interest
then accrued and unpaid (together with interest thereon at the annual rate of
9.65%, compounded semi-annually, to the extent permitted by applicable law).
During an Extension Period, interest will continue to accrue and holders of
Junior Subordinated Debentures (and holders of the Trust Securities while Trust
Securities are outstanding) will be required to accrue interest income for
United States federal income tax purposes prior to the receipt of cash
attributable to such income. See "Certain United States Federal Income Tax
Considerations-Interest Income and Original Issue Discount."

        During any Extension Period, the Company may not (i) declare or pay any
dividends or distributions on, or redeem, purchase, acquire, or make a
liquidation payment with respect to, any of the Company's capital stock or (ii)
make any payment of principal, interest or premium, if any, on or repay,
repurchase or redeem any debt securities of the Company (including any Other
Debentures) that rank pari passu with or junior in right of payment to the
Junior Subordinated Debentures or (iii) make any guarantee payments with respect
to any guarantee by the Company of the debt securities of any subsidiary of the
Company (including any Other Guarantees) if such guarantee ranks pari passu with
or junior in right of payment to the Junior Subordinated Debentures (other than
(a) dividends or distributions in shares of or options, warrants or rights to
subscribe for or purchase shares of, common stock of the Company, (b) any
declaration of a dividend in connection with the implementation of a
stockholders' rights plan, or the issuance of stock under any such plan in the
future, or the redemption or repurchase of any such rights pursuant thereto, (c)
payments under the Guarantee, (d) as a result of a reclassification of the
Company's capital stock or the exchange or conversion of one class or series of
the Company's capital stock for another class or series of the Company's capital
stock, (e) the purchase of fractional interests in shares of the Company's
capital stock pursuant to the conversion or exchange provisions of such capital
stock or the security being converted or exchanged, and (f) purchases of common
stock related to the issuance of common stock or rights under any of the
Company's benefit plans for its directors, officers or employees or any of the
Company's dividend reinvestment plans).

        Prior to the termination of any Extension Period, the Company may
further extend such Extension Period, provided that such extension does not
cause such Extension Period to exceed 10 consecutive semi-annual periods or to
extend beyond the Stated Maturity Date. Upon the termination of any such
Extension Period and the payment of all amounts then due on any Interest Payment
Date, the Company may elect to begin a new Extension Period, subject to the
above requirements. No interest shall be due and payable during an Extension
Period, except at the end thereof. The Company must give the Property Trustee,
the Administrative Trustees and the Debenture Trustee notice of its election of
any Extension Period (or an extension thereof) at least five Business Days prior
to the earlier of (i) the date the Distributions on the Trust Securities would
have been payable except for the election to begin or extend such Extension
Period or (ii) the date the Administrative Trustees are required to give notice
to any securities exchange or to holders of Capital Securities of the record
date or the date such Distributions are payable, but in any event not less than
five Business Days prior to such record date. The Debenture Trustee shall give
notice of the Company's election to begin

                                       39
<PAGE>
 
or extend a new Extension Period to the holders of the Capital Securities. There
is no limitation on the number of times that the Company may elect to begin an
Extension Period.

        Optional Prepayment. The Junior Subordinated Debentures will be
prepayable, in whole or in part, at the option of the Company on or after
January 15, 2007, subject to the Company having received prior approval of the
Federal Reserve if then required under applicable capital guidelines or policies
of the Federal Reserve, at a prepayment price (the "Optional Prepayment Price")
equal to the percentage of the outstanding principal amount of the Junior
Subordinated Debentures specified below, plus, in each case, accrued interest
thereon to the date of prepayment if redeemed during the 12-month period
beginning January 15 of the years indicated below:

<TABLE>
<CAPTION>
 
        YEAR                    PERCENTAGE
        ----                    ----------
<S>                              <C>
        2007                     104.825%
        2008                     104.343%
        2009                     103.860%
        2010                     103.378%
        2011                     102.895%
        2012                     102.413%
        2013                     101.930%
        2014                     101.448%
        2015                     100.965%
        2016                     100.483%
        2017 and thereafter      100.000%
</TABLE>

        Special Event Prepayment. Prior to January 15, 2007, if a Special Event
shall occur and be continuing, the Company may, at its option and subject to
receipt of prior approval of the Federal Reserve if then required under
applicable capital guidelines or policies of the Federal Reserve, prepay the
Junior Subordinated Debentures in whole, but not in part, at any time within 90
days of the occurrence of such Special Event, at a prepayment price (the
"Special Event Prepayment Price") equal to the Make-Whole Amount (as defined
below). The "Make-Whole Amount" shall be equal to the greater of (x) 100% of the
principal amount of such Junior Subordinated Debentures or (y) the sum, as
determined by a Quotation Agent (as hereinafter defined), of the present values
of the remaining scheduled payments of principal and interest thereon discounted
to the prepayment date on a semi-annual basis (assuming a 360-day year
consisting of twelve 30-day months) at the Adjusted Treasury Rate (as defined
herein) plus, in either case, accrued interest thereon to the date of
prepayment.

        A "Special Event" means a Tax Event or a Regulatory Capital Event (as
defined below), as the case may be.

        A "Tax Event" means the receipt by the Company and the Trust of an
opinion of counsel experienced in such matters to the effect that, as a result
of any amendment to, or change (including any announced prospective change) in,
the laws or any regulations thereunder of the United States or any political
subdivision or taxing authority thereof or therein, or as a result of any
official administrative pronouncement or judicial decision interpreting or
applying such laws or regulations, which amendment or change is effective or
such pronouncement or decision is announced on or after February 4, 1997, there
is more than an insubstantial risk that (i) the Trust is, or will be within 90-
days of the date of such opinion, subject to United States federal income tax
with respect to income received or accrued on the Junior Subordinated
Debentures, (ii) interest payable by the Company on the Junior Subordinated
Debentures is not, or within 90-days of the date of such opinion will not be,
deductible by the Company, in whole or in part, for United States federal income
tax purposes, or (iii) the Trust is, or will be within 90 days of the date of
such opinion, subject to more than a de minimis amount of other taxes, duties or
other governmental charges.

        A "Regulatory Capital Event" means that the Company shall have received
an opinion of independent bank regulatory counsel experienced in such matters to
the effect that, as a result of (a) any amendment to, or change (including any
announced prospective change) in, the laws (or any regulations thereunder) of
the United States or any rules, guidelines or policies of the Federal Reserve or
(b) any official administrative pronouncement or judicial decision interpreting
or applying such laws or regulations, which amendment or change is effective or
such pronouncement or decision is announced on or after February 4, 1997, the
Capital Securities do not constitute, or within 90-days of the date thereof,
will not constitute, Tier I Capital (or its then equivalent); provided, however,
that the distribution of the Junior Subordinated Debentures in connection with
the liquidation of the Trust by the Company shall not in and of itself
constitute a Regulatory Capital Event unless such liquidation shall have
occurred in connection with a Tax Event.

                                       40
<PAGE>
 
        "Additional Sums" means the additional amounts as may be necessary in
order that the amount of Distributions then due and payable by the Trust on the
outstanding Capital Securities and Common Securities shall not be reduced as a
result of any additional taxes, duties or other governmental charges to which
the Trust has become subject as a result of a Tax Event.

        "Adjusted Treasury Rate" means, with respect to any prepayment date, the
rate per annum equal to the semi-annual equivalent yield to maturity of the
Comparable Treasury Issue, assuming a price for the Comparable Treasury Issue
(expressed as a percentage of its principal amount) equal to the Comparable
Treasury Price for such prepayment date, in each case calculated on the third
Business Day preceding such prepayment date, plus (i) 2.70% if such prepayment
date occurs on or prior to December 31, 1997 and (ii) 2.20% in all other cases.

        "Comparable Treasury Issue" means the United States Treasury security
selected by the Quotation Agent as having a maturity comparable to the remaining
term of the Junior Subordinated Debentures to be prepaid that would be utilized,
at the time of selection and in accordance with customary financial practice, in
pricing new issues of corporate debt securities of comparable maturity to the
remaining term of the Junior Subordinated Debentures.

        "Comparable Treasury Price" means, with respect to any prepayment date
(A) the yield, under the heading which represents the average for the
immediately prior week, appearing in the most recently published statistical
release designated "H.15(519)" or any successor publication which is published
weekly by the Federal Reserve and which establishes yields on actively traded
United States Treasury securities adjusted to constant maturity under the
caption "Treasury Constant Maturities," for the maturity corresponding to the
Comparable Treasury Issue (if no maturity is within three months before or after
the maturity corresponding to such Comparable Treasury Issue, yields for the two
published maturities most closely corresponding to such Comparable Treasury
Issue shall be interpolated, and the Comparable Treasury Price shall be
interpolated or extrapolated from such yields on a straight-line basis, rounding
to the nearest month), (B) if such release (or successor release) is not
published the week preceding the calculation date or does not contain such
yield, the average of five Reference Treasury Dealer Quotations for such
prepayment date, after excluding the highest and lowest such Reference Treasury
Dealer Quotations, or (C) if the Debenture Trustee obtains fewer than three such
Reference Treasury Dealer Quotations, the average of all such Quotations.

        "Quotation Agent" means the Reference Treasury Dealer appointed by the
Company. "Reference Treasury Dealer" means: (i) Bear, Stearns & Co. Inc. and its
respective successors; provided, however, that if the foregoing shall cease to
be a primary U.S. Government securities dealer in New York City (a "Primary
Treasury Dealer"), the Company shall substitute therefor another Primary
Treasury Dealer; and (ii) any other Primary Treasury Dealer selected by the
Company.

        "Reference Treasury Dealer Quotations" means, with respect to each
Reference Treasury Dealer and any prepayment date, the average, as determined by
the Debenture Trustee, of the bid and asked prices for the Comparable Treasury
Issue (expressed in each case as a percentage of its principal amount) quoted in
writing to the Debenture Trustee by such Reference Treasury Dealer at 5:00 p.m.,
New York City time, on the third Business Day preceding such prepayment date.

        Notice of any prepayment will be mailed at least 30 days but not more
than 60 days before the redemption date to each holder of Junior Subordinated
Debentures to be prepaid at its registered address. Unless the Company defaults
in payment of the prepayment price, on and after the prepayment date interest
ceases to accrue on such Junior Subordinated Debentures called for prepayment.

        If the Trust is required to pay any additional taxes, duties or other
governmental charges as a result of a Tax Event, the Company will pay as
additional amounts on the Junior Subordinated Debentures the Additional Sums.

        Restrictions on Certain Payments. The Company will also covenant that it
will not, (i) declare or pay any dividends or distributions on, or redeem,
purchase, acquire, or make a liquidation payment with respect to, any of the
Company's capital stock or (ii) make any payment of principal, interest or
premium, if any, on or repay or repurchase or redeem any debt securities of the
Company (including Other Debentures) that rank pari passu with or junior in
right of payment to the Junior Subordinated Debentures or (iii) make any
guarantee payments with respect to any guarantee by the Company of the debt
securities of any subsidiary of the Company (including under Other Guarantees)
if such guarantee ranks pari passu or junior in right of payment to the Junior
Subordinated Debentures (other than (a) dividends or distributions in shares of,
or options, warrants or rights to subscribe for or purchase shares of, common
stock of the

                                       41
<PAGE>
 
Company, (b) any declaration of a dividend in connection with the implementation
of a stockholder's rights plan, or the issuance of stock under any such plan in
the future, or the redemption or repurchase of any such rights pursuant thereto,
(c) payments under the Guarantee, (d) as a result of a reclassification of the
Company's capital stock or the exchange or conversion of one class or series of
the Company's capital stock for another class or series of the Company's capital
stock, (e) the purchase of fractional interests in shares of the Company's
capital stock pursuant to the conversion or exchange provisions of such capital
stock or the security being converted or exchanged, and (f) purchases of common
stock related to the issuance of common stock or rights under any of the
Company's benefit plans for its directors, officers or employees or any of the
Company's dividend reinvestment plans) if at such time (1) there shall have
occurred any event of which the Company has actual knowledge that (a) is, or
with the giving of notice or the lapse of time, or both, would be, a Debenture
Event of Default and (b) in respect of which the Company shall not have taken
reasonable steps to cure, (2) if such Junior Subordinated Debentures are held by
the Trust, the Company shall be in default with respect to its payment of any
obligations under the Guarantee or (3) the Company shall have given notice of
its election of an Extension Period as provided in the Indenture and shall not
have rescinded such notice, and such Extension Period, or any extension thereof,
shall have commenced.

        Modification of Indenture. From time to time the Company and the
Debenture Trustee may, without the consent of the holders of Junior Subordinated
Debentures, amend, waive or supplement the Indenture for specified purposes,
including, among other things, curing ambiguities, defects or inconsistencies
(provided that any such action does not materially adversely affect the interest
of the holders of Junior Subordinated Debentures) and qualifying, or maintaining
the qualification of, the Indenture under the Trust Indenture Act. The Indenture
contains provisions permitting the Company and the Debenture Trustee, with the
consent of the holders of a majority in principal amount of Junior Subordinated
Debentures, to modify the Indenture in a manner affecting the rights of the
holders of Junior Subordinated Debentures; provided, that no such modification
may, without the consent of the holders of each outstanding Junior Subordinated
Debenture so affected, (i) change the Stated Maturity, or reduce the principal
amount of the Junior Subordinated Debentures or reduce the rate or extend the
time of payment of interest thereon or (ii) reduce the percentage of principal
amount of Junior Subordinated Debentures, the holders of which are required to
consent to any such modification of the Indenture.

        Debenture Events of Default. The Indenture provides that any one or more
of the following described events with respect to the Junior Subordinated
Debentures constitutes a "Debenture Event of Default" (whatever the reason for
such Debenture 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):

        (i)    failure for 30 days to pay any interest on the Junior
               Subordinated Debentures or any Other Debentures when due (subject
               to the deferral of any due date in the case of an Extension
               Period); or

        (ii)   failure to pay any principal or premium, if any, on the Junior
               Subordinated Debentures or any Other Debentures when due whether
               at maturity, upon redemption, by declaration of acceleration of
               maturity or otherwise; or

        (iii)  failure to observe or perform in any material respect certain
               other covenants contained in the Indenture for 90 days after
               written notice to the Company from the Debenture Trustee or the
               holders of at least 25% in aggregate outstanding principal amount
               of Junior Subordinated Debentures; or

        (iv)   certain events in bankruptcy, insolvency or reorganization
               of the Company.

        The holders of a majority in aggregate outstanding principal amount of
the Junior Subordinated Debentures have the right to direct the time, method and
place of conducting any proceeding for any remedy available to the Debenture
Trustee. The Debenture Trustee or the holders of not less than 25% in aggregate
outstanding principal amount of the Junior Subordinated Debentures may declare
the principal due and payable immediately upon a Debenture Event of Default. The
holders of a majority in aggregate outstanding principal amount of the Junior
Subordinated Debentures may annul such declaration and waive the default if the
default (other than the non-payment of the principal of the Junior Subordinated
Debentures which has become due solely by such acceleration) has been cured and
a sum sufficient to pay all matured installments of interest and principal due
otherwise than by acceleration has been deposited with the Debenture Trustee.

                                       42
<PAGE>
 
        The holders of a majority in aggregate outstanding principal amount of
the Junior Subordinated Debentures affected thereby may, on behalf of the
holders of all the Junior Subordinated Debentures, waive any past default,
except a default in the payment of principal (or premium, if any) or interest
(unless such default has been cured and a sum sufficient to pay all matured
installments of interest (and premium, if any) and principal due otherwise than
by acceleration has been deposited with the Debenture Trustee) or a default in
respect of a covenant or provision which under the Indenture cannot be modified
or amended without the consent of the holder of each outstanding Junior
Subordinated Debenture.

        Enforcement of Certain Rights by Holders of Capital Securities. If a
Debenture Event of Default shall have occurred and be continuing and shall be
attributable to the failure of the Company to pay interest (or premium, if any)
on or principal of the Junior Subordinated Debentures on the due date, a holder
of Capital Securities may institute a Direct Action. The Company may not amend
the Indenture to remove the foregoing right to bring a Direct Action without the
prior written consent of the holders of all of the Capital Securities.
Notwithstanding any payments made to a holder of Capital Securities by the
Company in connection with a Direct Action, the Company shall remain obligated
to pay the principal of (or premium, if any) or interest on the Junior
Subordinated Debentures, and the Company shall be subrogated to the rights of
the holder of such Capital Securities with respect to payments on the Capital
Securities to the extent of any payments made by the Company to such holder in
any Direct Action.

        The holders of the Capital Securities will not be able to exercise
directly any remedies, other than those set forth in the preceding paragraph,
available to the holders of the Junior Subordinated Debentures unless there
shall have been an Event of Default under the Trust Agreement. See "-Description
of New Capital Securities-Events of Default; Notice."

        Consolidation, Merger, Sale of Assets and Other Transactions. The
Indenture provides that the Company shall not consolidate with or merge into any
other Person or convey, transfer or lease its properties and assets as an
entirety or substantially as an entirety to any Person, and no Person shall
consolidate with or merge into the Company or convey, transfer or lease its
properties and assets as an entirety or substantially as an entirety to the
Company, unless: (i) in case the Company consolidates with or merges into
another Person or conveys or transfers its properties and assets substantially
as an entirety to any Person, the successor Person is organized under the laws
of the United States or any State or the District of Columbia, and such
successor Person expressly assumes the Company's obligations on the Junior
Subordinated Debentures; (ii) immediately after giving effect thereto, no
Debenture Event of Default, and no event which, after notice or lapse of time or
both, would become a Debenture Event of Default, shall have occurred and be
continuing; and (iii) certain other conditions as prescribed in the Indenture
are met.

        The general provisions of the Indenture do not afford holders of the
Junior Subordinated Debentures protection in the event of a highly leveraged or
other transaction involving the Company that may adversely affect holders of the
Junior Subordinated Debentures.

        Satisfaction and Discharge. The Indenture provides that when, among
other things, all Junior Subordinated Debentures not previously delivered to the
Debenture Trustee for cancellation (i) have become due and payable or (ii) will
become due and payable at maturity within one year, and the Company deposits or
causes to be deposited with the Debenture Trustee funds, in trust, for the
purpose and in an amount sufficient to pay and discharge the entire indebtedness
on the Junior Subordinated Debentures not previously delivered to the Debenture
Trustee for cancellation, for the principal (and premium, if any) and interest
to the date of the deposit or to the Stated Maturity Date, as the case may be,
then the Indenture will cease to be of further effect (except as to the
Company's obligations to pay all other sums due pursuant to the Indenture and to
provide the officers' certificates and opinions of counsel described therein),
and the Company will be deemed to have satisfied and discharged the Indenture.

        Subordination. In the Indenture, the Company has covenanted and agreed
that any Junior Subordinated Debentures will rank subordinate and junior in
right of payment to all Senior Indebtedness to the extent provided in the
Indenture. Upon any payment or distribution of assets to creditors upon any
liquidation, dissolution, winding up, reorganization, assignment for the benefit
of creditors, marshaling of assets or any bankruptcy, insolvency, debt
restructuring or similar proceedings in connection with any insolvency or
bankruptcy proceeding of the Company, the holders of Senior Indebtedness will
first be entitled to receive payment in full of all Allocable Amounts (as
defined below) in respect of such Senior Indebtedness before the holders of
Junior Subordinated Debentures will be entitled to receive or retain any payment
in respect thereof.

                                       43
<PAGE>
 
        In the event of the acceleration of the maturity of Junior Subordinated
Debentures, the holders of all Senior Indebtedness outstanding at the time of
such acceleration will first be entitled to receive payment in full of all
Allocable Amounts in respect of such Senior Indebtedness before the holders of
Junior Subordinated Debentures will be entitled to receive or retain any payment
in respect of the Junior Subordinated Debentures.

        No payments on account of principal (or premium, if any) or interest, if
any, in respect of the Junior Subordinated Debentures may be made if there shall
have occurred and be continuing a default in any payment with respect to Senior
Indebtedness, or an event of default with respect to any Senior Indebtedness
resulting in the acceleration of the maturity thereof, or if any judicial
proceeding shall be pending with respect to any such default.

        "Allocable Amounts," when used with respect to any Senior Indebtedness,
means all amounts due or to become due on such Senior Indebtedness less, if
applicable, any amount which would have been paid to, and retained by, the
holders of such Senior Indebtedness (whether as a result of the receipt of
payments by the holders of such Senior Indebtedness from the Company or any
other obligor thereon or from any holders of, or trustee in respect of, other
indebtedness that is subordinate and junior in right of payment to such Senior
Indebtedness pursuant to any provision of such indebtedness for the payment over
of amounts received on account of such indebtedness to the holders of such
Senior Indebtedness or otherwise) but for the fact that such Senior Indebtedness
is subordinate or junior in right of payment to (or subject to a requirement
that amounts received on such Senior Indebtedness be paid over to obligees on)
trade accounts payable or accrued liabilities arising in the ordinary course of
business.

        "Indebtedness for Money Borrowed" shall mean any obligation of, or any
obligation guaranteed by, the Company for the repayment of borrowed money,
whether or not evidenced by bonds, debentures, notes or other written
instruments.

        "Indebtedness Ranking on a Parity with the Junior Subordinated
Debentures" shall mean (i) Indebtedness for Money Borrowed, whether outstanding
on the date of execution of the Indenture or thereafter created, assumed or
incurred, which specifically by its terms ranks equally with and not prior to
the Junior Subordinated Debentures in the right of payment upon the happening of
the dissolution or winding-up or liquidation or reorganization of the Company
and (ii) all other debt securities, and guarantees in respect of those debt
securities, issued to any other trust, or a trustee of such trust, partnership
or other entity affiliated with the Company that is a financing vehicle of the
Company (a "financing entity") in connection with the issuance by such financing
entity of equity securities or other securities guaranteed by the Company
pursuant to an instrument that ranks pari passu with or junior in right of
payment to the Guarantee.

        "Indebtedness Ranking Junior to the Junior Subordinated Debentures"
shall mean any Indebtedness for Money Borrowed, whether outstanding on the date
of execution of the Indenture or thereafter created, assumed or incurred, which
specifically by its terms ranks junior to and not equally with or prior to the
Junior Subordinated Debentures (and any other Indebtedness Ranking on a Parity
with the Junior Subordinated Debentures) in right of payment upon the happening
of the dissolution or winding-up or liquidation or reorganization of the
Company. The securing of any Indebtedness for Money Borrowed, otherwise
constituting Indebtedness Ranking on a Parity with the Junior Subordinated
Debentures or Indebtedness Ranking Junior to the Junior Subordinated Debentures,
as the case may be, shall not be deemed to prevent such Indebtedness for Money
Borrowed from constituting Indebtedness Ranking on a Parity with the Junior
Subordinated Debentures or Indebtedness Ranking Junior to the Junior
Subordinated Debentures, as the case may be.

        "Senior Indebtedness" shall mean all Indebtedness for Money Borrowed,
whether outstanding on the date of execution of the Indenture or thereafter
created, assumed or incurred, except Indebtedness Ranking on a Parity with the
Junior Subordinated Debentures or Indebtedness Ranking Junior to the Junior
Subordinated Debentures, and any deferrals, renewals or extensions of such
Senior Indebtedness.

        The Company is a non-operating holding company and almost all of the
operating assets of the Company are owned by the Company's banking subsidiary,
BancFirst, and BancFirst's subsidiaries. The Company relies primarily on
dividends from such subsidiaries to meet its obligations for payment of
principal and interest on its outstanding debt obligations and corporate
expenses. The Company is a legal entity separate and distinct from its banking
and non-banking affiliates. The principal sources of the Company's income are
dividends, interest and fees from its banking and non-banking affiliates.
BancFirst is subject to certain restrictions imposed by federal law on any
extensions of credit to, and certain other transactions with, the Company and
certain other affiliates, and on investments in stock or other

                                       44
<PAGE>
 
securities thereof. Such restrictions prevent the Company and such other
affiliates from borrowing from BancFirst unless the loans are secured by various
types of collateral. Further, such secured loans, other transactions and
investments by BancFirst are generally limited in amount as to the Company and
as to each of such other affiliates to 10% of BancFirst's capital and surplus
and as to the Company and all of such other affiliates to an aggregate of 20% of
BancFirst's capital and surplus. In addition, payment of dividends to the
Company by BancFirst is subject to ongoing review by banking regulators and is
subject to various statutory limitations and in certain circumstances requires
approval by banking regulatory authorities. Accordingly, the Junior Subordinated
Debentures will be effectively subordinated to all existing and future
liabilities of the Company's subsidiaries, and holders of Junior Subordinated
Debentures should look only to the assets of the Company for payments of
principal and premium, if any, and interest.

        The Indenture places no limitation on the amount of additional Senior
Indebtedness that may be incurred by the Company. The Company expects from time
to time to incur additional indebtedness constituting Senior Indebtedness.

        Governing Law. The Indenture and the New Junior Subordinated Debentures
will be governed by and construed in accordance with the laws of the State of
New York.

        Information Concerning the Debenture Trustee. Following the Exchange
Offer and the qualification of the Indenture under the Trust Indenture Act, the
Debenture Trustee shall have and be subject to all the duties and
responsibilities specified with respect to an indenture trustee under the Trust
Indenture Act. Subject to such provisions, the Debenture Trustee is under no
obligation to exercise any of the powers vested in it by the Indenture at the
request of any holder of Junior Subordinated Debentures, unless offered
reasonable indemnity by such holder against the costs, expenses and liabilities
which might be incurred thereby. The Debenture Trustee is not required to expend
or risk its own funds or otherwise incur personal financial liability in the
performance of its duties if the Debenture Trustee reasonably believes that
repayment or adequate indemnity is not reasonably assured to it.

DESCRIPTION OF NEW GUARANTEE

        The Old Guarantee was executed and delivered by the Company concurrently
with the issuance by the Trust of the Old Capital Securities for the benefit of
the holders from time to time of the Old Capital Securities. Promptly after the
Expiration Date, the New Guarantee will be issued by the Company for the benefit
of the holders from time to time of the New Capital Securities. The New
Guarantee has been qualified under the Trust Indenture Act. This summary of
certain provisions of the New Guarantee does not purport to be complete and is
subject to, and qualified in its entirety by reference to, all of the provisions
of the New Guarantee, including the definitions therein of certain terms, and
the Trust Indenture Act.

        General. The Company will irrevocably agree to pay in full on a
subordinated basis, to the extent set forth herein, the Guarantee Payments (as
defined below) to the holders of the New Capital Securities, as and when due,
regardless of any defense, right of set-off or counterclaim that the Trust may
have or assert other than the defense of payment. The following payments with
respect to the New Capital Securities, to the extent not paid by or on behalf of
the Trust (the "Guarantee Payments"), will be subject to the New Guarantee: (i)
any accumulated and unpaid Distributions required to be paid on New Capital
Securities, to the extent that the Trust has funds on hand legally available
therefor at such time, (ii) the applicable Redemption Price with respect to New
Capital Securities called for redemption, to the extent that the Trust has funds
on hand legally available therefor at such time, or (iii) upon a voluntary or
involuntary termination and liquidation of the Trust, the lesser of (a) the
Liquidation Distribution and (b) the amount of assets of the Trust remaining
available for distribution to holders of New Capital Securities. The Company's
obligation to make a Guarantee Payment may be satisfied by direct payment of the
required amounts by the Company to the holders of the New Capital Securities or
by causing the Trust to pay such amounts to such holders.

        The New Guarantee will rank subordinate and junior in right of payment
to all Senior Indebtedness to the extent provided therein. See "-Status of New
Guarantee." Because the Company is a holding company, the right of the Company
to participate in any distribution of assets of any subsidiary upon such
subsidiary's liquidation or reorganization or otherwise, is subject to the prior
claims of creditors of that subsidiary, except to the extent the Company may
itself be recognized as a creditor of that subsidiary. Accordingly, the
Company's obligations under the New Guarantee will be effectively subordinated
to all existing and future liabilities of the Company's subsidiaries, and
claimants should look only to the assets of the Company for payments thereunder.
See "-Description of New Junior Subordinated Debentures-General." The New
Guarantee does not limit the incurrence or issuance of other secured or
unsecured debt  

                                       45
<PAGE>
 
of the Company, including Senior Indebtedness, whether under the Indenture, any
other indenture that the Company may enter into in the future or otherwise.

        The Company will, through the New Guarantee, the Trust Agreement, the
New Junior Subordinated Debentures and the Indenture, taken together, fully,
irrevocably and unconditionally guarantee all of the Trust's obligations under
the New Capital Securities. No single document standing alone or operating in
conjunction with fewer than all of the other documents constitutes such
guarantee. It is only the combined operation of these documents that has the
effect of providing a full, irrevocable and unconditional guarantee of the
Trust's obligations under the New Capital Securities. See "Relationship Among
the New Capital Securities, the New Junior Subordinated Debentures and the New
Guarantee."

        Status of New Guarantee. The New Guarantee will constitute an unsecured
obligation of the Company and will rank subordinate and junior in right of
payment to all Senior Indebtedness in the same manner as New Junior Subordinated
Debentures, except in the case of a bankruptcy or insolvency proceeding in
respect of the Company, in which case the New Guarantee will rank subordinate
and junior in right of payment to all liabilities (other than Other Guarantees)
of the Company.

        The New Guarantee will rank pari passu with the Old Guarantee and with
all Other Guarantees issued by the Company. The New Guarantee will constitute a
guarantee of payment and not of collection (i.e., the guaranteed party may
institute a legal proceeding directly against the Company to enforce its rights
under the New Guarantee without first instituting a legal proceeding against any
other person or entity). The New Guarantee will be held for the benefit of the
holders of the New Capital Securities. The New Guarantee will not be discharged
except by payment of the Guarantee Payments in full to the extent not paid by
the Trust or upon distribution to the holders of the New Capital Securities of
the New Junior Subordinated Debentures. The New Guarantee does not place a
limitation on the amount of additional Senior Indebtedness that may be incurred
by the Corporation. The Company expects from time to time to incur additional
indebtedness constituting Senior Indebtedness.

        Amendments and Assignment. Except with respect to any changes that do
not materially adversely affect the rights of holders of the New Capital
Securities (in which case no consent will be required), the New Guarantee may
not be amended without the prior approval of the holders of a majority of the
Liquidation Amount of such outstanding New Capital Securities. The manner of
obtaining any such approval will be as set forth under "-Description of New
Capital Securities-Voting Rights; Amendment of the Trust Agreement." All
guarantees and agreements contained in the New Guarantee shall bind the
successors, assigns, receivers, trustees and representatives of the Company and
shall inure to the benefit of the holders of the New Capital Securities then
outstanding.

        Events of Default. An event of default under the New Guarantee will
occur upon the failure of the Company to perform any of its payment or other
obligations thereunder. The holders of a majority in Liquidation Amount of the
New Capital Securities will have the right to direct the time, method and place
of conducting any proceeding for any remedy available to the Guarantee Trustee
in respect of the New Guarantee or to direct the exercise of any trust or power
conferred upon the Guarantee Trustee under the New Guarantee.

        Any holder of the New Capital Securities may institute a legal
proceeding directly against the Company to enforce its rights under the New
Guarantee without first instituting a legal proceeding against the Trust, the
Guarantee Trustee or any other person or entity.

        The Company, as guarantor, will be required to file annually with the
Guarantee Trustee a certificate as to whether or not the Company is in
compliance with all the conditions and covenants applicable to it under the New
Guarantee.

        Termination of the New Guarantee. The New Guarantee will terminate and
be of no further force and effect upon full payment of the applicable Redemption
Price of the New Capital Securities, upon full payment of the Liquidation Amount
payable upon liquidation of the Trust or upon distribution of New Junior
Subordinated Debentures to the holders of the New Capital Securities. The New
Guarantee will continue to be effective or will be reinstated, as the case may
be, if at any time any holder of the New Capital Securities must restore payment
of any sums paid under the New Capital Securities or the New Guarantee.

        Governing Law. The New Guarantee will be governed by and construed in
accordance with the laws of the State of New York.

                                       46
<PAGE>
 
        Information Concerning the Guarantee Trustee. The Guarantee Trustee,
other than during the occurrence and continuance of a default by the Company in
performance of the New Guarantee, will undertake to perform only such duties as
are specifically set forth in the New Guarantee and, after default with respect
to the New Guarantee, must exercise the same degree of care and skill as a
prudent person would exercise or use in the conduct of his or her own affairs.
Subject to this provision, the Guarantee Trustee will be under no obligation to
exercise any of the powers vested in it by the New Guarantee at the request of
any holder of the New Capital Securities unless it is offered reasonable
indemnity against the costs, expenses and liabilities that might be incurred
thereby.


                         DESCRIPTION OF OLD SECURITIES

        The terms of the Old Securities are identical in all material respects
to the New Securities, except that (i) the Old Securities have not been
registered under the Securities Act, are subject to certain restrictions on
transfer and are entitled to certain rights under the applicable Registration
Rights Agreement (which rights will terminate upon consummation of the Exchange
Offer, except under limited circumstances), (ii) the New Capital Securities will
not contain the $100,000 minimum Liquidation Amount transfer restriction and
certain other restrictions on transfer applicable to Old Capital Securities,
(iii) the New Capital Securities will not provide for any increase in the
distribution rate thereon, (iv) the New Junior Subordinated Debentures will not
contain the $100,000 minimum principal amount transfer restriction and (v) the
New Junior Subordinated Debentures will not provide for any increase in the
interest rate thereon. The Old Securities provide that, in the event that a
registration statement relating to the Exchange Offer has not been filed by July
4, 1997 and been declared effective by August 3, 1997, or, in certain limited
circumstances, in the event a shelf registration statement (the "Shelf
Registration Statement") with respect to the resale of the Old Capital
Securities is not declared effective by August 3, 1997, then interest will
accrue (in addition to the stated interest rate on the Old Junior Subordinated
Debentures) at the rate of 0.25% per annum on the principal amount of the Old
Junior Subordinated Debentures and Distributions will accumulate (in addition to
the stated distribution rate on the Old Capital Securities) at the rate of 0.25%
per annum on the Liquidation Amount of the Old Capital Securities, for the
period from the occurrence of such event until such time as such required
Exchange Offer is consummated or any required Shelf Registration Statement is
effective. The New Securities are not, and upon consummation of the Exchange
Offer the Old Securities will not be, entitled to any such additional interest
or Distributions. Accordingly, holders of Old Capital Securities should review
the information set forth under "Risk Factors-Certain Consequences of a Failure
to Exchange Old Capital Securities" and "Description of New Securities."

              RELATIONSHIP AMONG THE NEW CAPITAL SECURITIES, THE
           NEW JUNIOR SUBORDINATED DEBENTURES AND THE NEW GUARANTEE

FULL AND UNCONDITIONAL GUARANTEE

        Payments of Distributions and other amounts due on the New Capital
Securities (to the extent the Trust has funds on hand legally available for the
payment of such Distributions) will be irrevocably guaranteed by the Company as
and to the extent set forth under "Description of New Securities-Description of
New Guarantee." Taken together, the Company's obligations under the New Junior
Subordinated Debentures, the Indenture, the Trust Agreement and the New
Guarantee will provide, in the aggregate, a full, irrevocable and unconditional
guarantee of payments of Distributions and other amounts due on the New Capital
Securities. No single document standing alone or operating in conjunction with
fewer than all of the other documents constitutes such guarantee. It is only the
combined operation of these documents that has the effect of providing a full,
irrevocable and unconditional guarantee of the Trust's obligations under the New
Capital Securities. If and to the extent that the Company does not make the
required payments on the New Junior Subordinated Debentures, the Trust will not
have sufficient funds to make the related payments, including Distributions, on
the New Capital Securities. The New Guarantee will not cover any such payment
when the Trust does not have sufficient funds on hand legally available
therefor. In such event, the remedy of a holder of New Capital Securities is to
institute a Direct Action. The obligations of the Company under the New
Guarantee will rank subordinate and junior in right of payment to all Senior
Indebtedness.

SUFFICIENCY OF PAYMENTS

        As long as payments of interest and other payments are made when due on
the New Junior Subordinated Debentures, such payments will be sufficient to
cover Distributions and other payments due on the New Capital Securities,
primarily because: (i) the aggregate principal amount or Prepayment Price of the
New Junior Subordinated
 

                                       47
<PAGE>
 
Debentures will be equal to the sum of the Liquidation Amount or Redemption
Price, as applicable, of the New Capital Securities and related Common
Securities; (ii) the interest rate and interest and other payment dates on the
New Junior Subordinated Debentures will match the distribution rate and
distribution and other payment dates for the New Capital Securities; (iii) the
Company shall pay for all and any costs, expenses and liabilities of the Trust
except the Trust's obligations to holders of Trust Securities under the Trust
Agreement; and (iv) the Trust Agreement provides that the Trust is not
authorized to engage in any activity that is not consistent with the limited
purposes thereof.

ENFORCEMENT RIGHTS OF HOLDERS OF NEW CAPITAL SECURITIES

        A holder of any New Capital Security may institute a legal proceeding
directly against the Company to enforce its rights under the New Guarantee
without first instituting a legal proceeding against the Guarantee Trustee, the
Trust or any other person or entity. A default or event of default under any
Senior Indebtedness would not constitute a default or Event of Default under the
Trust Agreement. However, in the event of payment defaults under, or
acceleration of, Senior Indebtedness, the subordination provisions of the
Indenture provide that no payments may be made in respect of the New Junior
Subordinated Debentures until such Senior Indebtedness has been paid in full or
any payment default thereunder has been cured or waived. Failure to make
required payments on New Junior Subordinated Debentures would constitute an
Event of Default under the Trust Agreement.

LIMITED PURPOSE OF THE TRUST

        The Trust exists for the sole purpose of issuing and selling the Trust
Securities, using the proceeds from the sale of the Trust Securities to acquire
the Junior Subordinated Debentures and engaging in only those other activities
necessary, advisable or incidental thereto. The New Capital Securities will
represent preferred beneficial interests in the Trust. A principal difference
between the rights of a holder of a New Capital Security and a holder of a New
Junior Subordinated Debenture is that a holder of a New Junior Subordinated
Debenture will be entitled to receive from the Company the principal amount of
(and premium, if any) and interest on New Junior Subordinated Debentures held,
while a holder of New Capital Securities is entitled to receive Distributions
from the Trust (or, in certain circumstances, from the Company under the New
Guarantee) if and to the extent the Trust has funds on hand legally available
for the payment of such Distributions.

RIGHTS UPON TERMINATION

        Unless the Junior Subordinated Debentures are distributed to holders of
the Trust Securities, upon any voluntary or involuntary termination and
liquidation of the Trust, the holders of the Trust Securities will be entitled
to receive, out of assets held by the Trust, the Liquidation Distribution in
cash. See "Description of New Securities-Description of New Capital Securities-
Liquidation of the Trust and Distribution of New Junior Subordinated
Debentures." Upon any voluntary or involuntary liquidation or bankruptcy of the
Company, the Property Trustee, as holder of the New Junior Subordinated
Debentures, would be a subordinated creditor of the Company, subordinated in
right of payment to all Senior Indebtedness as set forth in the Indenture, but
entitled to receive payment in full of principal (and premium, if any) and
interest, before any stockholders of the Company receive payments or
distributions. Since the Company will be the guarantor under the New Guarantee
and will agree to pay for all costs, expenses and liabilities of the Trust
(other than the Trust's obligations to the holders of its Trust Securities), the
positions of a holder of New Capital Securities and a holder of New Junior
Subordinated Debentures relative to stockholders of the Company in the event of
liquidation or bankruptcy of the Company are expected to be substantially the
same.

            CERTAIN UNITED STATES FEDERAL INCOME TAX CONSIDERATIONS

GENERAL

        In the opinion of Brown & Wood LLP, special counsel to the Company and
the Trust ("Tax Counsel"), the following is a summary of certain of the material
United States federal income tax consequences of the purchase, ownership and
disposition of Capital Securities held as capital assets by a holder. This
summary only addresses the tax consequences to a holder that acquired the Old
Capital Securities upon initial issuance at their original offering price. It
does not deal with special classes of holders such as banks, thrifts, real
estate investment trusts, regulated investment companies, insurance companies,
dealers in securities or currencies, tax-exempt investors, or persons that will
hold the Capital Securities as a position in a "straddle," as part of a
"synthetic security" or "hedge," as part of a "conversion transaction" or other
integrated investment, or as other than a capital asset. This summary also does
not address the tax  

                                       48
<PAGE>
 
consequences to persons that have a functional currency other than the U.S.
dollar or the tax consequences to shareholders, partners or beneficiaries of a
holder of Capital Securities. Further, it does not include any description of
any alternative minimum tax consequences or the tax laws of any state or local
government or of any foreign government that may be applicable to the Capital
Securities. This summary is based on the Internal Revenue Code of 1986, as
amended (the "Code"), Treasury regulations thereunder, the administrative and
judicial interpretations thereof, as of the date hereof, all of which are
subject to change, possibly on a retroactive basis.

EXCHANGE OF CAPITAL SECURITIES

        The exchange of Old Capital Securities for New Capital Securities should
not be a taxable event to holders for United States federal income tax purposes.
The exchange of Old Capital Securities for New Capital Securities pursuant to
the Exchange Offer should not be treated as an "exchange" for United States
federal income tax purposes because the New Capital Securities should not be
considered to differ materially in kind or extent from the Old Capital
Securities and because the exchange will occur by operation of the terms of the
Old Capital Securities. If, however, the exchange of the Old Capital Securities
for the New Capital Securities were treated as an exchange for United States
federal income tax purposes, such exchange should constitute a recapitalization
for federal income tax purposes. Accordingly, the New Capital Securities should
have the same issue price as the Old Capital Securities, and a holder should
have the same adjusted tax basis and holding period in the New Capital
Securities as the holder had in the Old Capital Securities immediately before
the exchange.

CLASSIFICATION OF THE JUNIOR SUBORDINATED DEBENTURES

        In connection with the issuance of the Old Junior Subordinated
Debentures, Tax Counsel has rendered its opinion generally to the effect that,
under then current law and assuming full compliance with the terms of the
Indenture (and certain other documents), and based on certain facts and
assumptions contained in such opinion, the Old Junior Subordinated Debentures
will be classified for United States federal income tax purposes as indebtedness
of the Company. An opinion of Tax Counsel, however, is not binding on the
Internal Revenue Service (the "IRS") or the courts. Prospective investors should
note that no rulings have been or are expected to be sought from the IRS with
respect to any of these issues and no assurance can be given that the IRS will
not take contrary positions. Moreover, no assurance can be given that any of the
opinions expressed herein will not be challenged by the IRS or, if challenged,
that such a challenge would not be successful.

CLASSIFICATION OF THE TRUST

        In connection with the issuance of the Old Capital Securities, Tax
Counsel has rendered its opinion generally to the effect that, under then
current law and assuming full compliance with the terms of the Trust Agreement
and the Indenture (and certain other documents), and based on certain facts and
assumptions contained in such opinion, the Trust will be classified for United
States federal income tax purposes as a grantor trust and not as an association
taxable as a corporation. Accordingly, for United States federal income tax
purposes, each holder of Capital Securities generally will be considered the
owner of an undivided interest in the Junior Subordinated Debentures, and each
holder will be required to include in its gross income any interest (or OID
accrued) with respect to its allocable share of those Junior Subordinated
Debentures.

INTEREST INCOME AND ORIGINAL ISSUE DISCOUNT

        Under recently issued Treasury regulations (the "Regulations")
applicable to debt instruments issued on or after August 13, 1996, a "remote"
contingency that stated interest will not be timely paid will be ignored in
determining whether a debt instrument is issued with OID. The Company believes
that the likelihood of its exercising its option to defer payments of interest
is "remote" since exercising that option would prevent the Company from
declaring dividends on any class of its equity securities. Accordingly, the
Company intends to take the position, based on the advice of Tax Counsel, that
the Junior Subordinated Debentures will not be considered to be issued with OID
and, accordingly, stated interest on the Junior Subordinated Debentures
generally will be taxable to a holder as ordinary income at the time it is paid
or accrued in accordance with such holder's method of accounting.

        Under the Regulations, if the Company were to exercise its option to
defer payments of interest, the Junior Subordinated Debentures would at that
time be treated as issued with OID, and all stated interest on the Junior
Subordinated Debentures would thereafter be treated as OID as long as the Junior
Subordinated Debentures remain

                                       49
<PAGE>
 
outstanding. In such event, all of a holder's taxable interest income with
respect to the Junior Subordinated Debentures would thereafter be accounted for
on an economic accrual basis regardless of such holder's method of tax
accounting, and actual distributions of stated interest would not be reported as
taxable income. Consequently, a holder of Capital Securities would be required
to include in gross income OID even though the Company would not make actual
cash payments during an Extension Period. Moreover, under the Regulations, if
the option to defer the payment of interest was determined not to be "remote",
the Junior Subordinated Debentures would be treated as having been originally
issued with OID. In such event, all of a holder's taxable interest income with
respect to the Junior Subordinated Debentures would be accounted for on an
economic accrual basis regardless of such holder's method of tax accounting, and
actual distributions of stated interest would not be reported as taxable income.

        The Regulations have not yet been addressed in any rulings or other
interpretations by the IRS, and it is possible that the IRS could take a
position contrary to Tax Counsel's interpretation herein.

        Because income on the Capital Securities will constitute interest or
OID, corporate holders of the Capital Securities will not be entitled to a
dividends-received deduction with respect to any income recognized with respect
to the Capital Securities.

RECEIPT OF JUNIOR SUBORDINATED DEBENTURES OR CASH UPON LIQUIDATION OF THE TRUST

        Provided certain conditions are met (see "Description of New Capital
Securities-Liquidation of the Trust and Distribution of Junior Subordinated
Debentures"), the Company will have the right at any time to liquidate the Trust
and cause the Junior Subordinated Debentures to be distributed to the holders of
the Trust Securities. Under current law, such a distribution, for United States
federal income tax purposes, would be treated as a nontaxable event to each
holder, and each holder would receive an aggregate tax basis in the Junior
Subordinated Debentures equal to such holder's aggregate tax basis in its
Capital Securities. A holder's holding period in the Junior Subordinated
Debentures so received in liquidation of the Trust would include the period
during which the Capital Securities were held by such holder. If, however, the
Trust is characterized for United States federal income tax purposes as an
association taxable as a corporation at the time of its dissolution, the
distribution of the Junior Subordinated Debentures may constitute a taxable
event to holders of Capital Securities and a holder's holding period in Junior
Subordinated Debentures would begin on the date such Junior Subordinated
Debentures were received.

        Under certain circumstances described herein (see "Description New
Securities-Description of New Capital Securities"), the Junior Subordinated
Debentures may be redeemed for cash and the proceeds of such redemption
distributed to holders in redemption of their Capital Securities. Under current
law, such a redemption would, for United States federal income tax purposes,
constitute a taxable disposition of the redeemed Capital Securities, and a
holder could recognize gain or loss as if it sold such redeemed Capital
Securities for cash. See " -Sales of Capital Securities."

SALES OF CAPITAL SECURITIES

        A holder that sells Capital Securities will recognize gain or loss equal
to the difference between its adjusted tax basis in the Capital Securities and
the amount realized on the sale of such Capital Securities (other than with
respect to accrued and unpaid interest which has not yet been included in
income, which will be treated as ordinary income). A holder's adjusted tax basis
in the Capital Securities generally will be its initial purchase price increased
by OID (if any) previously includable in such holder's gross income to the date
of disposition and decreased by payments (if any) received on the Capital
Securities in respect of OID. Such gain or loss generally will be a capital gain
or loss and generally will be a long-term capital gain or loss if the Capital
Securities have been held for more than one year.

        The Capital Securities may trade at a price that does not accurately
reflect the value of accrued but unpaid interest with respect to the underlying
Junior Subordinated Debentures. A holder who uses the accrual method of
accounting for tax purposes (and a cash method holder, if the Junior
Subordinated Debentures are deemed to have been issued with OID) who disposes of
his Capital Securities between record dates for payments of distributions
thereon will be required to include accrued but unpaid interest on the Junior
Subordinated Debentures through the date of disposition in income as ordinary
income (i.e., interest or, possibly, OID), and to add such amount to his
adjusted tax basis in his pro rata share of the underlying Junior Subordinated
Debentures deemed disposed of. To the extent the selling price is less than the
holder's adjusted tax basis a holder will recognize a capital loss. Subject to
certain limited exceptions, capital losses cannot be applied to offset ordinary
income for United States federal income tax purposes.

                                       50
<PAGE>
 
PROPOSED TAX LEGISLATION

        On February 6, 1997, as part of the Clinton Administration's Fiscal 1998
Budget Proposal, the Treasury Department proposed legislation (the "Proposed
Legislation") which would, among other things, generally deny corporate issuers
a deduction for interest in respect of certain debt obligations, such as the New
Junior Subordinated Debentures, issued on or after the date of "first committee
action," if such debt obligations had a maximum term in excess of 15 years and
are not shown as indebtedness on the issuer's applicable consolidated balance
sheet. The Proposed Legislation has not yet been introduced by any member of the
105th Congress. If the Proposed Legislation or any other legislation is enacted
by Congress, such enactment may give rise to a Tax Event, in which event the
Company, upon approval of the Federal Reserve if then required under applicable
capital guidelines or policies of the Federal Reserve, would be permitted to
cause a redemption of the Trust Securities at the Special Event Redemption Price
by electing to prepay the Junior Subordinated Debentures at the Special Event
Prepayment Price. See "Description of Capital Securities-Description of New
Capital Securities-Redemption" and "-Description of New Junior Subordinated
Debentures-Special Event Prepayment."

UNITED STATES ALIEN HOLDERS

        For purposes of this discussion, a "United States Alien Holder" is any
corporation, individual, partnership, estate or trust that is not a U.S. Holder
for United States federal income tax purposes. A "U.S. Holder" is a holder of
Capital Securities who or which is (i) a citizen or individual resident (or is
treated as a citizen or individual resident) of the United States for federal
income tax purposes, (ii) a corporation or partnership created or organized (or
treated as created or organized for federal income tax purposes) in or under the
laws of the United States or any political subdivision thereof, (iii) an estate
the income of which is includible in its gross income for federal income tax
purposes without regard to its source or (iv) a trust if, and only if, (x) a
court within the United States is able to exercise primary supervision over the
administration of the trust and (y) one or more United States trustees have the
authority to control all substantial decisions of the trust. Under present
United States federal income tax laws: (i) payments by the Trust or any of its
paying agents to any holder of a Capital Security who or which is a United
States Alien Holder will not be subject to United States federal withholding
tax; provided that, (a) the beneficial owner of the Capital Security does not
actually or constructively own 10 percent or more of the total combined voting
power of all classes of stock of the Company entitled to vote, (b) the
beneficial owner of the Capital Security is not a controlled foreign corporation
that is related to the Company through stock ownership, and (c) either (A) the
beneficial owner of the Capital Security certifies to the Trust or its agent,
under penalties of perjury, that it is not a United States holder and provides
its name and address or (B) a securities clearing organization, bank or other
financial institution that holds customers' securities in the ordinary course of
its trade or business (a "Financial Institution"), and holds the Capital
Security in such capacity, certifies to the Trust or its agent, under penalties
of perjury, that such statement has been received from the beneficial owner by
it or by a Financial Institution between it and the beneficial owner and
furnishes the Trust or its agent with a copy thereof; and (ii) a United States
Alien Holder of a Capital Security will not be subject to United States federal
withholding tax on any gain realized upon the sale or other disposition of a
Capital Security.

INFORMATION REPORTING TO HOLDERS

        Generally, income on the Capital Securities will be reported to holders
on Forms 1099, which forms should be mailed to holders of Capital Securities by
January 31 following each calendar year.

BACKUP WITHHOLDING

        Payments made on, and proceeds from the sale of, the Capital Securities
may be subject to a "backup" withholding tax of 31 percent unless the holder
complies with certain identification requirements. Any withheld amounts will be
allowed as a credit against the holder's United States federal income tax,
provided the required information is provided to the IRS.

                                       51
<PAGE>
 
        THE UNITED STATES FEDERAL INCOME TAX DISCUSSION SET FORTH ABOVE IS
INCLUDED FOR GENERAL INFORMATION ONLY AND MAY NOT BE APPLICABLE DEPENDING UPON A
HOLDER'S PARTICULAR SITUATION. HOLDERS SHOULD CONSULT THEIR TAX ADVISORS WITH
RESPECT TO THE TAX CONSEQUENCES TO THEM OF THE EXCHANGE, OWNERSHIP AND
DISPOSITION OF THE NEW CAPITAL SECURITIES, INCLUDING THE TAX CONSEQUENCES UNDER
STATE, LOCAL, FOREIGN AND OTHER TAX LAWS AND THE POSSIBLE EFFECTS OF CHANGES IN
UNITED STATES FEDERAL OR OTHER TAX LAWS.

                             ERISA CONSIDERATIONS

        The Company, the obligor with respect to the New Junior Subordinated
Debentures held by the Trust, and its affiliates and the Property Trustee may be
considered a "party in interest" (within the meaning of the Employee Retirement
Income Security Act of 1974, as amended ("ERISA")) or a "disqualified person"
(within the meaning of Section 4975 of the Code) with respect to many employee
benefit plans ("Plans") that are subject to ERISA. Any purchaser proposing to
acquire New Capital Securities with assets of any Plan should consult with its
counsel. The purchase and/or holding of New Capital Securities by a Plan that is
subject to the fiduciary responsibility provisions of ERISA or the prohibited
transaction provisions of Section 4975 of the Code (including individual
retirement arrangements and other plans described in Section 4975(e)(1) of the
Code) and with respect to which the Company, the Property Trustee or any
affiliate is a service provider (or otherwise is a party in interest or a
disqualified person) may constitute or result in a prohibited transaction under
ERISA or Section 4975 of the Code, unless such New Capital Securities are
acquired pursuant to and in accordance with an applicable exemption, such as
Prohibited Transaction Class Exemption ("PTCE") 84-14 (an exemption for certain
transactions determined by an independent qualified professional asset manager),
PTCE 91-38 (an exemption for certain transactions involving bank collective
investment funds), PTCE 90-1 (an exemption for certain transactions involving
insurance company pooled separate accounts), PTCE 95-60 (an exemption for
transactions involving certain insurance company general accounts) or PTCE 95-23
(an exemption for certain transactions determined by an in-house manager). In
addition, as described below, a Plan fiduciary considering the acquisition of
New Capital Securities should be aware that the assets of the Trust may be
considered "plan assets" for ERISA purposes. Therefore, a Plan fiduciary should
consider whether the acquisition of Capital Securities could result in a
delegation of fiduciary authority to the Property Trustee, and, if so, whether
such a delegation of authority is permissible under the Plan's governing
instrument or any investment management agreement with the Plan. In making such
determination, a Plan fiduciary should note that the Property Trustee is a bank
qualified to be an investment manager (within the meaning of section 3(38) of
ERISA) to which such a delegation of authority generally would be permissible
under ERISA. Further, prior to an Event of Default with respect to the New
Junior Subordinated Debentures, the Property Trustee will have only limited
custodial and ministerial authority with respect to Trust assets.

        Under the U.S. Department of Labor regulations defining "plan assets"
for ERISA purposes (the "Plan Assets Regulations"), the assets of the Trust will
be considered plan assets of Plans owning New Capital Securities unless the
aggregate investment in New Capital Securities by "benefit plan investors" is
not deemed "significant" or the New Capital Securities qualify as "publicly
offered securities" as defined in such Regulations. For this purpose, equity
participation by benefit plan investors will not be considered "significant" on
any date only if, immediately after the most recent acquisition of Capital
Securities, the aggregate interest in the New Capital Securities held by benefit
plan investors will be less than 25% of the value of the New Capital Securities.
Although it is possible that the equity participation by benefit plan investors
in New Capital Securities on any date will not be "significant" for purposes of
the Plan Assets Regulations, such result cannot be assured.

        The New Capital Securities may qualify as "publicly offered securities"
under the Plan Assets Regulations if at the time of the Exchange Offer they are
also "widely held" and "freely transferable." Under the Regulations, a class of
securities is "widely held" only if it is a class of securities that is owned by
100 or more investors independent of the issuer and of one another. Although it
is possible that at the time of the Exchange Offer the New Capital Securities
will be "widely held," such result cannot be assured. Whether a security is
"freely transferable" for purposes of the Regulations is a factual question to
be determined on the basis of all relevant facts and circumstances. If at the
time of the Exchange Offer the New Capital Securities qualify as "publicly
offered securities," the assets of the Trust should not be "plan assets" with
respect to Plans acquiring New Capital Securities. If at the time of the
Exchange Offer the New Capital Securities do not qualify as "publicly offered
securities," the "plan asset" considerations discussed in the preceding
paragraphs could be applicable in connection with the investment by Plans in the
New Capital Securities.

                                       52
<PAGE>
 
                             PLAN OF DISTRIBUTION

        Each broker-dealer that receives New Capital Securities for its own
account in connection with the Exchange Offer must acknowledge that it will
deliver a prospectus in connection with any resale of such New Capital
Securities. This Prospectus, as it may be amended or supplemented from time to
time, may be used by Participating Broker-Dealers during the period referred to
below in connection with resales of New Capital Securities received in exchange
for Old Capital Securities if such Old Capital Securities were acquired by such
Participating Broker-Dealers for their own accounts as a result of market-making
activities or other trading activities. The Company and the Trust have agreed
that this Prospectus, as it may be amended or supplemented from time to time,
may be used by a Participating Broker-Dealer in connection with resales of such
New Capital Securities for a period ending 90 days after the Expiration Date
(subject to extension under certain limited circumstances described herein) or,
if earlier, when all such New Capital Securities have been disposed of by such
Participating Broker- Dealer. However, a Participating Broker-Dealer who intends
to use this Prospectus in connection with the resale of New Capital Securities
received in exchange for Old Capital Securities pursuant to the Exchange Offer
must notify the Company or the Trust, or cause the Company or the Trust to be
notified, on or prior to the Expiration Date, that it is a Participating Broker-
Dealer. Such notice may be given in the space provided for that purpose in the
Letter of Transmittal or may be delivered to the Exchange Agent at one of the
addresses set forth herein under "The Exchange Offer-Exchange Agent." See "The
Exchange Offer-Resales of New Capital Securities."

        The Company or the Trust will not receive any cash proceeds from the
issuance of the New Capital Securities offered hereby. New Capital Securities
received by broker-dealers for their own accounts in connection with the
Exchange Offer may be sold from time to time in one or more transactions in the
over-the-counter market, in negotiated transactions, through the writing of
options on the New Capital Securities or a combination of such methods of
resale, at market prices prevailing at the time of resale, at prices related to
such prevailing market prices or at negotiated prices. Any such resale may be
made directly to purchasers or to or through brokers or dealers who may receive
compensation in the form of commissions or concessions from any such broker-
dealer and/or the purchasers of any such New Capital Securities.

        Any broker-dealer that resells New Capital Securities that were received
by it for its own account in connection with the Exchange Offer and any broker
or dealer that participates in a distribution of such New Capital Securities may
be deemed to be an "underwriter" within the meaning of the Securities Act, and
any profit on any such resale of New Capital Securities and any commissions or
concessions received by any such persons may be deemed to be underwriting
compensation under the Securities Act. The Letter of Transmittal states that, by
acknowledging that it will deliver and by delivering a prospectus, a broker-
dealer will not be deemed to admit that it is an "underwriter" within the
meaning of the Securities Act.

                          VALIDITY OF NEW SECURITIES

        Certain legal matters will be passed upon for the Company by Day Edwards
Federman Propester & Christensen, P.C., Oklahoma City, Oklahoma. The validity of
the New Junior Subordinated Debentures and the New Guarantee will be passed upon
by Brown & Wood LLP, New York, New York, special counsel to the Company. The
validity of the New Capital Securities will be passed upon by Richards, Layton &
Finger, P.A., Wilmington, Delaware, special Delaware counsel to the Trust.
Certain matters relating to United States federal income tax considerations will
be passed upon by Brown & Wood LLP, New York, New York.
 
                                    EXPERTS

        The Consolidated Financial Statements of the Company as of December 31, 
1995, and for each of the two years in the period ended December 31, 1995, 
incorporated by reference in this Prospectus, have been so incorporated in 
reliance on the reports of Price Waterhouse LLP, independent accountants, given 
on the authority of said firm as experts in auditing and accounting.
    
        The Consolidated Financial Statements of the Company as of December 31,
1996, and for the year then ended, incorporated by reference in this Prospectus,
have been so incorporated in reliance on the report of Coopers & Lybrand L.L.P.,
independant accountants, given on the authority of said firm as experts in
auditing and accounting.      

                                       53
<PAGE>
 
                             BANCFIRST CORPORATION
                      REGISTRATION STATEMENT ON FORM S-4

                                    PART II

                  INFORMATION NOT REQUIRED IN THE PROSPECTUS


ITEM 20.  INDEMNIFICATION OF DIRECTORS AND OFFICERS.

     Section 1006(B)(7) of the General Corporation Act of the State of Oklahoma
(the "Oklahoma General Corporation Act") authorizes a corporation in its
certificate of incorporation to eliminate or limit the personal liability of
members of its board of directors to the corporation or its stockholders for
monetary damages for violations of a director's fiduciary duty of care,
including acts constituting gross negligence.  Such a provision would have no
effect on the availability of equitable remedies, such as an injunction or
rescission, for breach of fiduciary duty.  In addition, no such provision may
eliminate or limit the liability of a director for breaching his duty of loyalty
to the corporation or its shareholders, failing to act in good faith, engaging
in intentional misconduct or knowingly violating a law, paying an unlawful
dividend or approving an illegal stock repurchase, or executing any transaction
from which the director obtained an improper personal benefit.

     Section 1031 of the Oklahoma General Corporation Act empowers a corporation
to indemnify any person who was or is a party to or is threatened to be made a
party to any threatened, pending or completed action, suit or proceeding,
whether civil, criminal, administrative or investigative (other than an action
by or in the right of the corporation), by reason of the fact that he is or was
a director, officer, employee or agent of the corporation, or is or was serving
at the request of the corporation as a director, officer, employee or agent of
another corporation, partnership, joint venture, trust or other enterprise,
against expenses (including attorney's fees), judgments, fines and amounts paid
in settlement actually and reasonably incurred by him in connection with such
action, suit or proceeding if he acted in good faith and in a manner he
reasonably believed to be in or not opposed to the best interests of the
corporation, and, with respect to any criminal action or proceeding, had no
reasonable cause to believe his conduct was unlawful.  With respect to actions
or suits by or in the right of the corporation, such indemnification is limited
to expenses (including attorneys' fees) actually and reasonably incurred by such
person in connection with the defense or settlement of such action or suit.
Further, no indemnification shall be made in respect of any claim, issue or
matter as to which such person shall have been adjudged to be liable to the
corporation unless and only to the extent that the court in which such action or
suit was brought shall determine upon application that, despite the adjudication
of liability but in view of all the circumstances of the case, such person is
fairly and reasonably entitled to indemnity for such expenses which the court
shall deem proper.  Additionally, a corporation is required to indemnify its
directors and officers against expenses to the extent that such directors or
officers have been successful on the merits or otherwise in defense of any
action, suit or proceeding referred to above or in defense of any claim, issue
or matter therein.

     An indemnification can be made by the corporation only upon a determination
made in the manner prescribed by the statute that indemnification is proper in
the circumstances because the party seeking indemnification has met the
applicable standard of conduct as set forth in the Oklahoma General Corporation
Act.  The indemnification provided by the Oklahoma General Corporation Act shall
not be deemed exclusive of any other rights to which those seeking
indemnification may be entitled under any bylaw, agreement, vote of stockholders
or disinterested directors, or otherwise. A corporation also has the power to
purchase and maintain insurance on behalf of any person covering any liability
incurred by such person in his capacity as a director, officer, employee or
agent of the corporation, or arising out of his status as such, whether or not
the corporation would have the power to indemnify him against such liability.
The indemnification provided by the Oklahoma General Corporation Act shall,
unless otherwise provided when authorized or ratified, continue as to a person
who has ceased to be a director, officer, employee or agent and shall inure to
the benefit of the heirs, executors and administrators of such a person.

THE COMPANY'S CHARTER AND BYLAW PROVISIONS

     The Company's Certificate of Incorporation (i) limits its directors'
liability for monetary damages to the Company and its shareholders for breach of
fiduciary duty except under the circumstances outlined in Section 1006(B)(7) 
<PAGE>
 
of the Oklahoma General Corporation Act as described above, (ii) provides for
elimination or limitation of liability to the fullest extent permitted should
the Oklahoma General Corporation Act be amended to authorize corporation action
further eliminating or limiting the personal liability of directors and (iii)
provides for indemnification to the fullest extent permitted by Section 1031 of
the Oklahoma General Corporation Act.

OTHER ARRANGEMENTS

     The Company maintains a directors' and officers' liability insurance policy
insuring its directors and officers against certain liabilities and expenses
incurred by them in their capacities as such and insuring the Company, under
certain circumstances, in the event that indemnification payments are made by
the Company to such directors and officers.

ITEM 21.  EXHIBITS AND FINANCIAL STATEMENT SCHEDULES

<TABLE>     
<CAPTION>
     Exhibit
     Number                                              Name of Exhibit
     -------                                             ---------------
     <S>           <C> 
        4.1*       Indenture of BancFirst Corporation relating to the Junior
                   Subordinated Debentures (filed as Exhibit 4.2 to the
                   Company's Current Report on Form 8-K dated February 4, 1997
                   and incorporated herein by reference)

        4.2*       Form of Certificate of New Junior Subordinated Debenture
                   (included as Exhibit A to Exhibit 4.1)

        4.3*       Certificate of Trust of BFC Capital Trust I

        4.4*       Declaration of Trust of BFC Capital Trust I

        4.5*       Amended and Restated Declaration of Trust for BFC Capital
                   Trust I (filed as Exhibit 4.1 to the Company's Current Report
                   on Form 8-K dated February 4, 1997 and incorporated herein by
                   reference)

        4.6*       Form of New Capital Security Certificate for BFC Capital
                   Trust I (included as Exhibit D to Exhibit 4.5)

        4.7*       Form of New Guarantee of BancFirst Corporation relating to
                   the New Capital Securities

        4.8*       Registration Rights Agreement

        5.1*       Opinion of Day Edwards Federman Propester & Christensen, P.C.
                   as to the authorization of the New Junior Subordinated
                   Debentures and the New Guarantee to be issued by BancFirst
                   Corporation

        5.2*       Opinion of Brown & Wood LLP as to the legality of the New
                   Junior Subordinated Debentures and the New Guarantee to be
                   issued by BancFirst Corporation

        5.3*       Opinion of Richards, Layton & Finger, P.A. as to legality of
                   the New Capital Securities to be issued by BFC Capital Trust
                   I

        8  *       Opinion of Brown & Wood LLP as to certain federal income tax
                   matters

       12.1*       Computation of ratio of earnings to fixed charges

       23.1*       Consent of Coopers & Lybrand, L.L.P.

       23.2*       Consent of Price Waterhouse, LLP

       23.3        Consent of Day Edwards Federman Propester & Christensen, P.C.
                   (included in Exhibit 5.1)

       23.4        Consent of Brown & Wood LLP (included in Exhibit 5.2)
</TABLE>      
<PAGE>
 
<TABLE>     
<CAPTION> 
     Exhibit
     Number                                              Name of Exhibit
     -------                                             ---------------
     <S>             <C> 
       23.5          Consent of Richards, Layton & Finger, P.A. (included in
                     Exhibit 5.3)

       25.1*         Form T-1 Statement of Eligibility of The Bank of New York
                     to act as trustee under the Amended and Restated
                     Declaration of Trust of BFC Capital Trust I

       25.2*         Form T-1 Statement of Eligibility of The Bank of New York
                     to act as trustee under the New Guarantee of Bancfirst
                     Corporation for the benefit of the holders of New Capital
                     Securities of BFC Capital Trust I

       25.3*         Form T-1 Statement of Eligibility of The Bank of New York
                     to act as trustee under the Indenture of BancFirst
                     Corporation

       99.1          Amended Form of Letter of Transmittal

       99.2          Amended Form of Notice of Guaranteed Delivery

       99.38         Form of Exchange Agent Agreement
</TABLE>      
    
*  Previously filed.      

ITEM 22. UNDERTAKINGS

     Each  of the undersigned Registrants hereby undertakes that, for purposes
of determining any liability under the Securities Act of 1933, as amended, each
filing of a Registrant's annual report pursuant to Section 13(a) or Section
15(d) of the Securities Exchange Act of 1934 (and, where applicable, each filing
of an employee benefit plan's annual report pursuant to Section 15(d) of the
Securities Exchange Act of 1934) that is incorporated by reference in this
Registration Statement shall be deemed to be a new registration statement
relating to the securities offered herein, and the offering of such securities
at that time shall be deemed to be the initial bona fide offering thereof.

     Insofar as indemnification for liabilities arising under the Securities Act
of 1933 may be permitted to directors, officers and controlling persons of each
undersigned Registrant pursuant to the provisions, or otherwise, each Registrant
has been advised that in the opinion of the Securities and Exchange Commission
such indemnification is against public policy  as expressed in the Act and is,
therefore, unenforceable.  In the event that a claim for indemnification against
such liabilities (other than the payment by each undersigned Registrant of
expenses incurred or paid by a director, officer of controlling person of each
Registrant in the successful defense of any action, suit or proceeding) is
asserted by such director, officer or controlling person in connection with the
securities being registered, each Registrant will, unless in the opinion of its
counsel the matter has been settled by the controlling precedent, submit to a
court of appropriate jurisdiction the question whether such indemnification by
it is against public policy as expressed in the Act and will be governed by the
final adjudication of such issue.

     The undersigned Registrants hereby undertake to respond to requests for
information that is incorporated by reference into the Prospectus pursuant to
Item 4, 10(b), 11 or 13 of this Form, within one business day of receipt of such
request, and to send the incorporated documents by first class mail or other
equally prompt means.  This includes information contained in documents filed
subsequent to the effective date of the registration statement through the date
of responding to the request.

     The undersigned Registrants hereby undertake to supply by means of a post-
effective amendment all information concerning a transaction, and the company
being acquired or involved therein, that was not the subject of and included in
the registration statement when it became effective.
<PAGE>
 
                                   SIGNATURES
        
     Pursuant to the requirements of the Securities Act of 1933, BancFirst
Corporation certifies that it has reasonable grounds to believe that it meets
all of the requirements for filing on Form S-4 and has duly caused this
Post-effective Amendment No. 1 to the Registration Statement to be signed on its
behalf by the undersigned, thereunto duly authorized, in the City of Oklahoma
City, and State of Oklahoma, on the 2nd day of July, 1997.      

                                   BANCFIRST CORPORATION


    
                                   By: /s/ DAVID E. RAINBOLT
                                      ------------------------------------------
                                           David E. Rainbolt
                                           President and Chief Executive Officer
     
        
     Pursuant to the requirements of the Securities Act of 1933, this Post-
effective Amendment No. 1 to the Registration Statement has been signed by the
following persons in the capacities and on the dates indicated.     

<TABLE>     
<CAPTION>
                     NAME                                      TITLE                DATE
                     ----                                      -----                ----
<S>                                              <C>                                <C>
/s/ H. E. Rainbolt                               Chairman of the Board              July 2, 1997
- --------------------------------------------     (Principal Executive Officer)       
H. E. Rainbolt                                   

/s/ David E. Rainbolt                            President, Chief Executive         July 2, 1997
- --------------------------------------------     Officer and Director
David E. Rainbolt                                (Principal Executive Officer)
                                                 
  
/s/ Joe T. Shockley, Jr.                         Executive Vice President, Chief    July 2, 1997 
- --------------------------------------------     Financial Officer and Director 
Joe T. Shockley, Jr.                             (Principal Financial Officer)

                                                  
/s/ J. Ralph McCalmont                           Vice Chairman of the Board         July 2, 1997
- --------------------------------------------     (Principal Executive Officer)
J. Ralph McCalmont                               

 
/s/ Robert A. Gregory                            Vice Chairman of the Board         July 2, 1997
- --------------------------------------------     (Principal Executive Officer)
Robert A. Gregory                                

 
/s/ William O. Johnstone                         Vice Chairman of the Board         July 2, 1997
- --------------------------------------------     (Principal Executive Officer)
William O. Johnstone

/s/ John T. Hannah                               Director                           July 2, 1997
- --------------------------------------------
John T. Hannah

/s/ Melvin Moran                                 Director                           July 2, 1997
- --------------------------------------------
Melvin Moran

/s/ J. R. Hutchens, Jr.                          Director                           July 2, 1997
- --------------------------------------------
J. R. Hutchens, Jr.

/s/ Randy P. Foraker                             Senior Vice President, Controller  July 2, 1997
- --------------------------------------------     and Secretary/Treasurer
Randy P. Foraker                                 (Principal Accounting Officer)
                                                 
</TABLE>      
<PAGE>
 
    
     Pursuant to the requirements of the Securities Act of 1933, BFC Capital
Trust I certifies that it has reasonable grounds to believe that it meets all
the requirements for filing on Form S-4 and has duly caused this Post-effective 
Amendment No. 1 to the Registration Statement to be signed on its behalf by the
undersigned, thereunto duly authorized, in the City of Oklahoma City, and State
of Oklahoma, on the 2nd day of July, 1997.      

                                        BFC CAPITAL TRUST I


    
                                        By: /s/ David E. Rainbolt
                                            ----------------------------------
                                            David E. Rainbolt,
                                            as Administrative Trustee 
          

    
                                        By: /s/ Joe T. Shockley,Jr.
                                            ----------------------------------
                                            Joe T. Shockley, Jr.,
                                            as Administrative Trustee
     
 
    
                                        By: /s/ Randy P. Foraker
                                            ----------------------------------
                                            Randy P. Foraker,
                                            as Administrative Trustee
     
<PAGE>
 
                                 EXHIBIT INDEX

<TABLE>     
<CAPTION>
     Exhibit
     Number                                              Name of Exhibit
     -------                                             ---------------
     <S>            <C> 
         4.1*       Indenture of BancFirst Corporation relating to the Junior Subordinated Debentures (filed as Exhibit 4.2 to the
                    Company's Current Report on Form 8-K dated February 4, 1997 and incorporated herein by reference)

         4.2*       Form of Certificate of New Junior Subordinated Debenture (included as Exhibit A to Exhibit 4.1)

         4.3*       Certificate of Trust of BFC Capital Trust I

         4.4*       Declaration of Trust of BFC Capital Trust I

         4.5*       Amended and Restated Declaration of Trust for BFC Capital Trust I (filed as Exhibit 4.1 to the Company's Current

                    Report on Form 8-K dated February 4, 1997 and incorporated herein by reference)

         4.6*       Form of New Capital Security Certificate for BFC Capital Trust I (included as Exhibit D to Exhibit 4.5)

         4.7*       Form of New Guarantee of BancFirst Corporation relating to the New Capital Securities

         4.8*       Registration Rights Agreement

         5.1*       Opinion of Day Edwards Federman Propester & Christensen, P.C. as to the authorization of the New Junior
                    Subordinated Debentures and the New Guarantee to be issued by BancFirst Corporation

         5.2*       Opinion of Brown & Wood LLP as to the legality of the New Junior Subordinated Debentures and the New Guarantee
                    to be issued by BancFirst Corporation

         5.3*       Opinion of Richards, Layton & Finger, P.A. as to legality of the New Capital Securities to be issued by BFC
                    Capital Trust I

         8  *       Opinion of Brown & Wood LLP as to certain federal income tax matters

        12.1*       Computation of ratio of earnings to fixed charges

        23.1*       Consent of Coopers & Lybrand, L.L.P.

        23.2*       Consent of Price Waterhouse, LLP

        23.3        Consent of Day Edwards Federman Propester & Christensen, P.C. (included in Exhibit 5.1)

        23.4        Consent of Brown & Wood LLP (included in Exhibit 5.2)

        23.5        Consent of Richards, Layton & Finger, P.A. (included in Exhibit 5.3)

        25.1*       Form T-1 Statement of Eligibility of The Bank of New York to act as trustee under the Amended and Restated
                    Declaration of Trust of BFC Capital Trust I

        25.2*       Form T-1 Statement of Eligibility of The Bank of New York to act as trustee under the New Guarantee for the
                    benefit of the holders of New Capital Securities of BFC Capital Trust I

        25.3*       Form T-1 Statement of Eligibility of The Bank of New York to act as trustee under the Indenture of BancFirst
                    Corporation
</TABLE>      
<PAGE>
 
<TABLE>     
<CAPTION> 
     Exhibit
     Number                Name of Exhibit
     -------               ---------------
     <S>            <C>  
        99.1        Amended Form of Letter of Transmittal

        99.2        Amended Form of Notice of Guaranteed Delivery

        99.3*       Form of Exchange Agent Agreement
</TABLE>      

         
    
*  Previously filed
     

<PAGE>
 
                                                        EXHIBIT 99.1

                             LETTER OF TRANSMITTAL
                              BFC CAPITAL TRUST I
    
                             OFFER TO EXCHANGE ITS
                       9.65% CAPITAL SECURITIES, SERIES B
                (LIQUIDATION AMOUNT $1,000 PER CAPITAL SECURITY)
          WHICH HAVE BEEN REGISTERED UNDER THE SECURITIES ACT OF 1933
                       FOR ANY AND ALL OF ITS OUTSTANDING
                       9.65% CAPITAL SECURITIES, SERIES A
                (LIQUIDATION AMOUNT $1,000 PER CAPITAL SECURITY)      

    
                          PURSUANT TO THE PROSPECTUS 
                              DATED JULY 7, 1997      


    
THE EXCHANGE OFFER AND WITHDRAWAL RIGHTS WILL EXPIRE AT 5:00 P.M., NEW YORK CITY
TIME, ON AUGUST 1, 1997, UNLESS THE OFFER IS EXTENDED. TENDERS MAY BE WITHDRAWN
PRIOR TO 5:00 P.M., NEW YORK CITY TIME, ON THE EXPIRATION DATE.      

                 The Exchange Agent For The Exchange Offer Is:
                              The Bank Of New York

<TABLE>
- --------------------------------------------------------------------------------------------------------------
<S>                                       <C>                           <C>
BY HAND OR OVERNIGHT DELIVERY:              FACSIMILE TRANSMISSIONS:       BY REGISTERED OR CERTIFIED MAIL:
- --------------------------------------    (Eligible Institutions Only)   -------------------------------------
The Bank of New York                                    (212) 571-3080                    The Bank of New York
101 Barclay Street                                                              101 Barclay Street, 7E
Corporate Trust Services Window               CONFIRM BY TELEPHONE             New York, New York 10286
Ground Level                                OR FOR INFORMATION CALL:    Attention:  Reorganization Department,
New York, New York 10286                                (212) 815-4997              George Johnson
Attention:  Reorganization Department,
George Johnson
- --------------------------------------------------------------------------------------------------------------
</TABLE>


     Delivery of this letter of transmittal to an address other than as set
forth above or transmission of this letter of transmittal via facsimile to a
number other than as set forth above does not constitute a valid delivery.

     THE INSTRUCTIONS CONTAINED HEREIN SHOULD BE READ CAREFULLY BEFORE THIS
LETTER OF TRANSMITTAL IS COMPLETED.

     Capitalized terms used but not defined herein shall have the same meaning
given them in the Prospectus (as defined below).

     This Letter of Transmittal is to be completed by holders of Old Capital
Securities (as defined below) either if Old Capital Securities are to be
forwarded herewith or if tenders of Old Capital Securities are to be made by
book-entry transfer to an account maintained by The Bank of New York (the
"Exchange Agent") at The Depository Trust Company ("DTC") pursuant to the
procedures set forth in "The Exchange Offer--Procedures for Tendering Old
Capital Securities" in the Prospectus.
<PAGE>
 
     Holders of Old Capital Securities whose certificates (the "Certificates")
for such Old Capital Securities are not immediately available or who cannot
deliver their Certificates and all other required documents to the Exchange
Agent on or prior to the Expiration Date (as defined in the Prospectus) or who
cannot complete the procedures for book-entry transfer on a timely basis, must
tender their Old Capital Securities according to the guaranteed delivery
procedures set forth in "The Exchange Offer--Procedures for Tendering Old
Capital Securities" in the Prospectus.

     DELIVERY OF DOCUMENTS TO THE BOOK-ENTRY TRANSFER FACILITY DOES NOT
CONSTITUTE DELIVERY TO THE EXCHANGE AGENT.

                    NOTE: SIGNATURES MUST BE PROVIDED BELOW
              PLEASE READ THE ACCOMPANYING INSTRUCTIONS CAREFULLY

ALL TENDERING HOLDERS COMPLETE THIS BOX:

<TABLE>
<CAPTION>
=========================================================================================================== 
                              DESCRIPTION OF OLD CAPITAL SECURITIES TENDERED
- -----------------------------------------------------------------------------------------------------------
 If blank, please print name and                       Old Capital Securities tendered
 address of registered holder.                      (Attach additional list if necessary)
 
- -----------------------------------------------------------------------------------------------------------
                                 CERTIFICATE   AGGREGATE PRINCIPAL AMOUNT   PRINCIPAL AMOUNT OF OLD CAPITAL
                                 NUMBER(S)*    OF OLD CAPITAL SECURITIES    SECURITIES (IF LESS THAN ALL)**
<S>                              <C>           <C>                          <C>           
========================================================================================================== 

__________________________________________________________________________________________________________ 

__________________________________________________________________________________________________________ 

__________________________________________________________________________________________________________

__________________________________________________________________________________________________________

========================================================================================================== 
TOTAL AMOUNT TENDERED:
==========================================================================================================
</TABLE>

*    Need not be completed by book-entry holders.
**   Old Capital Securities may be tendered in whole or in part in denominations
of $100,000 and integral multiples of $1,000 in excess thereof, provided that if
any Old Capital Securities are tendered for exchange in part, the untendered
principal amount thereof must be $100,000 or any integral multiple of $1,000 in
excess thereof.  All Old Capital Securities held shall be deemed tendered unless
a lesser number is specified in this column.  See Instruction 4.


         (BOXES BELOW TO BE CHECKED BY ELIGIBLE INSTITUTIONS ONLY)

[ ]  CHECK HERE IF TENDERED OLD CAPITAL SECURITIES ARE BEING DELIVERED BY BOOK-
     ENTRY TRANSFER MADE TO THE ACCOUNT MAINTAINED BY THE EXCHANGE AGENT WITH
     DTC AND COMPLETE THE FOLLOWING:

     Name of Tendering Institution_____________________________________________

     DTC Account Number________________________________________________________

     Transaction Code Number___________________________________________________

                                       2
<PAGE>
 
         
     
Ladies and Gentlemen:

     The undersigned hereby tenders to BFC Capital Trust I, a trust formed under
the laws of the State of Delaware (the "Trust") and BancFirst Corporation, an
Oklahoma corporation (the "Company"), the above described aggregate Liquidation
Amount of the Trust's 9.65% Capital Securities, Series A (the "Old Capital
Securities") in exchange for a like aggregate Liquidation Amount of the Trust's
9.65% Capital Securities, Series B (the "New Capital Securities") which have
been registered under the Securities Act of 1933 (the "Securities Act"), upon
the terms and subject to the conditions set forth in the Prospectus dated
July 7, 1997 (as the same may be amended or supplemented from time to time, the
"Prospectus"), receipt of which is hereby acknowledged, and in this Letter of
Transmittal (which, together with the Prospectus, constitute the "Exchange
Offer").      

     Subject to and effective upon the acceptance for exchange of all or any
portion of the Old Capital Securities tendered herewith in accordance with the
terms and conditions of the Exchange Offer (including, if the Exchange Offer is
extended or amended, the terms and conditions of any such extension or
amendment), the undersigned hereby sells, 

                                       3
<PAGE>
 
assigns and transfers to or upon the order of the Trust all right, title and
interest in and to such Old Capital Securities as are being tendered herewith.
The undersigned hereby irrevocably constitutes and appoints the Exchange Agent
as its agent and attorney-in-fact (with full knowledge that the Exchange Agent
is also acting as agent of the Company and the Trust in connection with the
Exchange Offer) with respect to the tendered Old Capital Securities, with full
power of substitution (such power of attorney being deemed to be an irrevocable
power coupled with an interest) subject only to the right of withdrawal
described in the Prospectus, to (i) deliver Certificates for Old Capital
Securities to the Company or the Trust together with all accompanying evidences
of transfer and authenticity to, or upon the order of, the Trust, upon receipt
by the Exchange Agent, as the undersigned's agent, of the New Capital Securities
to be issued in exchange for such Old Capital Securities, (ii) present
Certificates for such Old Capital Securities for transfer, and to transfer the
Old Capital Securities on the books of the Trust, and (iii) receive for the
account of the Trust all benefits and otherwise exercise all rights of
beneficial ownership of such Old Capital Securities, all in accordance with the
terms and conditions of the Exchange
Offer.

     THE UNDERSIGNED HEREBY REPRESENTS AND WARRANTS THAT THE UNDERSIGNED HAS
FULL POWER AND AUTHORITY TO TENDER, EXCHANGE, SELL, ASSIGN AND TRANSFER THE OLD
CAPITAL SECURITIES TENDERED HEREBY AND THAT, WHEN THE SAME ARE ACCEPTED FOR
EXCHANGE, THE TRUST WILL ACQUIRE GOOD, MARKETABLE AND UNENCUMBERED TITLE
THERETO, FREE AND CLEAR OF ALL LIENS, RESTRICTIONS, CHARGES AND ENCUMBRANCES,
AND THAT THE OLD CAPITAL SECURITIES TENDERED HEREBY ARE NOT SUBJECT TO ANY
ADVERSE CLAIMS OR PROXIES.  THE UNDERSIGNED WILL, UPON REQUEST, EXECUTE AND
DELIVER ANY ADDITIONAL DOCUMENTS DEEMED BY THE COMPANY, THE TRUST OR THE
EXCHANGE AGENT TO BE NECESSARY OR DESIRABLE TO COMPLETE THE EXCHANGE, ASSIGNMENT
AND TRANSFER OF THE OLD CAPITAL SECURITIES TENDERED HEREBY, AND THE UNDERSIGNED
WILL COMPLY WITH ITS OBLIGATIONS UNDER THE REGISTRATION RIGHTS AGREEMENT.  THE
UNDERSIGNED HAS READ AND AGREES TO ALL OF THE TERMS OF THE EXCHANGE OFFER.

     The name(s) and address(es) of the registered holder(s) of the Old Capital
Securities tendered hereby should be printed above, if they are not already set
forth above, as they appear on the Certificates representing such Old Capital
Securities.  The Certificate number(s) and the Old Capital Securities that the
undersigned wishes to tender should be indicated in the appropriate boxes above.

     If any tendered Old Capital Securities are not exchanged pursuant to the
Exchange Offer for any reason, or if Certificates are submitted for more Old
Capital Securities than are tendered or accepted for exchange, Certificates for
such nonexchanged or nontendered Old Capital Securities will be returned (or, in
the case of Old Capital Securities tendered by book-entry transfer, such Old
Capital Securities will be credited to an account maintained at DTC), without
expense to the tendering holder, promptly following the expiration or
termination of the Exchange Offer.

     The undersigned understands that tenders of Old Capital Securities pursuant
to any one of the procedures described in "The Exchange Offer--Procedures for
Tendering Old Capital Securities" in the Prospectus and in the instructions
attached hereto will, upon the Company's and the Trust's acceptance for exchange
of such tendered Old Capital Securities, constitute a binding agreement between
the undersigned, the Company and the Trust upon the terms and subject to the
conditions of the Exchange Offer.  The undersigned recognizes that, under
certain circumstances set forth in the Prospectus, the Company and the Trust may
not be required to accept for exchange any of the Old Capital Securities
tendered hereby.

     Unless otherwise indicated herein in the box entitled "Special Issuance
Instructions" below, the undersigned hereby directs that the New Capital
Securities be issued in the name(s) of the undersigned or, in the case of a
book-entry transfer of Old Capital Securities, that such New Capital Securities
be credited to the account indicated above maintained at DTC.  If applicable,
substitute Certificates representing Old Capital Securities not exchanged or not
accepted for exchange will be issued to the undersigned or, in the case of a
book-entry transfer of Old Capital Securities, will be credited to the account
indicated above maintained at DTC.  Similarly, unless otherwise indicated under
"Special Delivery Instructions," please deliver New Capital Securities to the
undersigned at the address shown below the undersigned's signature.

                                       4
<PAGE>
 
     BY TENDERING OLD CAPITAL SECURITIES AND EXECUTING THIS LETTER OF
TRANSMITTAL, THE UNDERSIGNED HEREBY REPRESENTS AND AGREES THAT (I) THE
UNDERSIGNED IS NOT AN "AFFILIATE" OF THE COMPANY OR THE TRUST, (II) ANY NEW
CAPITAL SECURITIES TO BE RECEIVED BY THE UNDERSIGNED ARE BEING ACQUIRED IN THE
ORDINARY COURSE OF ITS BUSINESS, (III) THE UNDERSIGNED HAS NO ARRANGEMENT OR
UNDERSTANDING WITH ANY PERSON TO PARTICIPATE IN A DISTRIBUTION (WITHIN THE
MEANING OF THE SECURITIES ACT) OF NEW CAPITAL SECURITIES TO BE RECEIVED IN THE
EXCHANGE OFFER, AND (IV) IF THE UNDERSIGNED IS NOT A BROKER-DEALER, THE
UNDERSIGNED IS NOT ENGAGED IN, AND DOES NOT INTEND TO ENGAGE IN, A DISTRIBUTION
(WITHIN THE MEANING OF THE SECURITIES ACT) OF SUCH NEW CAPITAL SECURITIES.  BY
TENDERING OLD CAPITAL SECURITIES PURSUANT TO THE EXCHANGE OFFER AND EXECUTING
THIS LETTER OF TRANSMITTAL, A HOLDER OF OLD CAPITAL SECURITIES WHICH IS A
BROKER-DEALER REPRESENTS AND AGREES, CONSISTENT WITH CERTAIN INTERPRETIVE
LETTERS ISSUED BY THE STAFF OF THE DIVISION OF COMPANY FINANCE OF THE SECURITIES
AND EXCHANGE COMMISSION TO THIRD PARTIES, THAT (A) SUCH OLD CAPITAL SECURITIES
HELD BY THE BROKER-DEALER ARE HELD ONLY AS A NOMINEE, OR (B) SUCH OLD CAPITAL
SECURITIES WERE ACQUIRED BY SUCH BROKER-DEALER FOR ITS OWN ACCOUNT AS A RESULT
OF MARKET-MAKING ACTIVITIES OR OTHER TRADING ACTIVITIES AND IT WILL DELIVER THE
PROSPECTUS (AS AMENDED OR SUPPLEMENTED FROM TIME TO TIME) MEETING THE
REQUIREMENTS OF THE SECURITIES ACT IN CONNECTION WITH ANY RESALE OF SUCH NEW
CAPITAL SECURITIES (PROVIDED THAT, BY SO ACKNOWLEDGING AND BY DELIVERING A
PROSPECTUS, SUCH BROKER-DEALER WILL NOT BE DEEMED TO ADMIT THAT IT IS AN
"UNDERWRITER" WITHIN THE MEANING OF THE SECURITIES ACT).

     THE COMPANY AND THE TRUST HAVE AGREED THAT, SUBJECT TO THE PROVISIONS OF
THE REGISTRATION RIGHTS AGREEMENT, THE PROSPECTUS, AS IT MAY BE AMENDED OR
SUPPLEMENTED FROM TIME TO TIME, MAY BE USED BY A PARTICIPATING BROKER-DEALER (AS
DEFINED BELOW) IN CONNECTION WITH RESALES OF NEW CAPITAL SECURITIES RECEIVED IN
EXCHANGE FOR OLD CAPITAL SECURITIES, WHERE SUCH OLD CAPITAL SECURITIES WERE
ACQUIRED BY SUCH PARTICIPATING BROKER-DEALER FOR ITS OWN ACCOUNT AS A RESULT OF
MARKET-MAKING ACTIVITIES OR OTHER TRADING ACTIVITIES, FOR A PERIOD ENDING 90
DAYS AFTER THE EXPIRATION DATE (SUBJECT TO EXTENSION UNDER CERTAIN LIMITED
CIRCUMSTANCES DESCRIBED IN THE PROSPECTUS) OR, IF EARLIER, WHEN ALL SUCH NEW
CAPITAL SECURITIES HAVE BEEN DISPOSED OF BY SUCH PARTICIPATING BROKER-DEALER.
IN THAT REGARD, EACH BROKER-DEALER WHO ACQUIRED OLD CAPITAL SECURITIES FOR ITS
OWN ACCOUNT AS A RESULT OF MARKET-MAKING OR OTHER TRADING ACTIVITIES (A
"PARTICIPATING BROKER-DEALER"), BY TENDERING SUCH OLD CAPITAL SECURITIES AND
EXECUTING THIS LETTER OF TRANSMITTAL, AGREES THAT, UPON RECEIPT OF NOTICE FROM
THE COMPANY OR THE TRUST OF THE OCCURRENCE OF ANY EVENT OR THE DISCOVERY OF ANY
FACT WHICH MAKES ANY STATEMENT CONTAINED OR INCORPORATED BY REFERENCE IN THE
PROSPECTUS UNTRUE IN ANY MATERIAL RESPECT OR WHICH CAUSES THE PROSPECTUS TO OMIT
TO STATE A MATERIAL FACT NECESSARY IN ORDER TO MAKE THE STATEMENTS CONTAINED OR
INCORPORATED BY REFERENCE THEREIN, IN LIGHT OF THE CIRCUMSTANCES UNDER WHICH
THEY WERE MADE, NOT MISLEADING OR OF THE OCCURRENCE OF CERTAIN OTHER EVENTS
SPECIFIED IN THE REGISTRATION RIGHTS AGREEMENT, SUCH PARTICIPATING BROKER-DEALER
WILL SUSPEND THE SALE OF NEW CAPITAL SECURITIES PURSUANT TO THE PROSPECTUS UNTIL
THE COMPANY AND THE TRUST HAVE AMENDED OR SUPPLEMENTED THE PROSPECTUS TO CORRECT
SUCH MISSTATEMENT OR OMISSION AND HAVE FURNISHED COPIES OF THE AMENDED OR
SUPPLEMENTED PROSPECTUS TO THE PARTICIPATING BROKER-DEALER OR THE COMPANY OR THE
TRUST HAS GIVEN NOTICE THAT THE SALE OF THE NEW CAPITAL SECURITIES MAY BE
RESUMED, AS THE CASE MAY BE.  IF THE COMPANY OR THE TRUST GIVES SUCH NOTICE TO
SUSPEND THE SALE OF THE NEW CAPITAL SECURITIES, THEY SHALL EXTEND THE 90-DAY
PERIOD REFERRED TO ABOVE DURING WHICH PARTICIPATING BROKER-DEALERS ARE ENTITLED
TO USE THE PROSPECTUS IN CONNECTION WITH THE RESALE OF NEW CAPITAL SECURITIES BY
THE NUMBER OF DAYS DURING THE PERIOD FROM AND INCLUDING THE DATE OF THE GIVING
OF SUCH NOTICE TO AND INCLUDING THE DATE WHEN PARTICIPATING BROKER-DEALERS SHALL
HAVE RECEIVED COPIES 

                                       5
<PAGE>
 
OF THE SUPPLEMENTED OR AMENDED PROSPECTUS NECESSARY TO PERMIT RESALES OF THE NEW
CAPITAL SECURITIES OR TO AND INCLUDING THE DATE ON WHICH THE COMPANY OR THE
TRUST HAS GIVEN NOTICE THAT THE SALE OF NEW CAPITAL SECURITIES MAY BE RESUMED,
AS THE CASE MAY BE.

     AS A RESULT, A PARTICIPATING BROKER-DEALER WHO INTENDS TO USE THE
PROSPECTUS IN CONNECTION WITH RESALES OF NEW CAPITAL SECURITIES RECEIVED IN
EXCHANGE FOR OLD CAPITAL SECURITIES PURSUANT TO THE EXCHANGE OFFER MUST NOTIFY
THE COMPANY AND THE TRUST, OR CAUSE THE COMPANY AND THE TRUST TO BE NOTIFIED, ON
OR PRIOR TO THE EXPIRATION DATE, THAT IT IS A PARTICIPATING BROKER-DEALER.  SUCH
NOTICE MAY BE GIVEN IN THE SPACE PROVIDED ABOVE OR MAY BE DELIVERED TO THE
EXCHANGE AGENT AT THE ADDRESS SET FORTH IN THE PROSPECTUS UNDER "THE EXCHANGE
OFFER--EXCHANGE AGENT."
    
     The payment of Distributions accumulated from and including February 4, 
1997 will be made on July 15, 1997, to the holders of the Old Capital 
Securitites as they appear on the books and records of the Trust on July 1,
1997, the record date for the payment of Distributions on July 15, 1997. Holders
of Old Capital Securities whose Old Capital Securities are accepted for exchange
will not receive subsequent Distributions on such Old Capital Securities but, 
rather, will be entitled to Distributions on the New Capital Securities 
accumulated from and after July 15, 1997, payable semi-annually in arrears 
commencing January 15, 1998.      

     The undersigned will, upon request, execute and deliver any additional
documents deemed by the Company or the Trust to be necessary or desirable to
complete the sale, assignment and transfer of the Old Capital Securities
tendered hereby.  All authority herein conferred or agreed to be conferred in
this Letter of Transmittal shall survive the death or incapacity of the
undersigned and any obligation of the undersigned hereunder shall be binding
upon the heirs, executors, administrators, personal representatives, trustees in
bankruptcy, legal representatives, successors and assigns of the undersigned.
Except as stated in the Prospectus, this tender is irrevocable.

         
________________________________________________________________________________

                              HOLDER(S) SIGN HERE
                         (SEE INSTRUCTIONS 2, 5 AND 6)
                (PLEASE COMPLETE SUBSTITUTE FORM W-9 ON PAGE 11)
      (NOTE: SIGNATURE(S) MUST BE GUARANTEED IF REQUIRED BY INSTRUCTION 2)
    
     Must be signed by registered holder(s) exactly as name(s) appear(s) on
Certificate(s) for the Old Capital Securities hereby tendered or on a security 
position listing, or by any person(s) authorized to become the registered
holder(s) by endorsements and documents transmitted herewith (including such
opinions of counsel, certificates and other information as may be required by
the Trust or the Trustee for the Old Capital Securities to comply with the
restrictions on transfer applicable to the Old Capital Securities). If signature
is by an attorney-in-fact, executor, administrator, trustee, guardian, officer
of a corporation or another acting in a fiduciary capacity or representative
capacity, please set forth the signer's full title. See Instruction 5.      

_______________________________________________________________________________

_______________________________________________________________________________
     (SIGNATURE(S) OF HOLDER(S))

Date:__________________________________________, 1997

Name(s) ________________________________________________________________________

                                       6
<PAGE>
 
_______________________________________________________________________________
     (PLEASE PRINT)


Capacity (full title)__________________________________________________________

Address________________________________________________________________________

_______________________________________________________________________________

_______________________________________________________________________________
                          (INCLUDE ZIP CODE)

Area Code and Telephone Number__________________________________________________

______________________________________________________________________________
            (TAX IDENTIFICATION OR SOCIAL SECURITY NUMBER(S))



                           GUARANTEE OF SIGNATURE(S)
                           (SEE INSTRUCTIONS 2 AND 5)

________________________________________________________________________________
                             (AUTHORIZED SIGNATURE)

Date:__________________________________________, 1997

Name of Firm ________________________________________________

Capacity (full title) _______________________________________
                                   (PLEASE PRINT)

Address______________________________________________________

_____________________________________________________________

_____________________________________________________________
                    (INCLUDE ZIP CODE)

Area Code and Telephone Number_______________________________

________________________________________________________________________________


                         SPECIAL ISSUANCE INSTRUCTIONS
                         (SEE INSTRUCTIONS 1, 5 AND 6)

                                       7
<PAGE>
 
To be completed ONLY if New Capital Securities or Old Capital Securities not
tendered are to be issued in the name of someone other than the registered
holder of the Old Capital Securities whose name(s) appear(s) above.

Issue

[  ]      Old Capital Securities not tendered to:
[  ]      New Capital Securities to:


Name(s)________________________________________________________

Address________________________________________________________

_______________________________________________________________
          (INCLUDE ZIP CODE)

Area Code and Telephone Number ________________________________

________________________________________________________________________________



                         SPECIAL DELIVERY INSTRUCTIONS
                         (SEE INSTRUCTIONS 1, 5 AND 6)

To be completed ONLY if New Capital Securities or Old Capital Securities not
tendered are to be sent to someone other than the registered holder of the Old
Capital Securities whose name(s) appear(s) above, or such registered holder(s)
at an address other than that shown above.

Mail
[  ]      Old Capital Securities not tendered to:
[  ]      New Capital Securities to:

Name(s)_______________________________________________________

Address_______________________________________________________

______________________________________________________________
          (INCLUDE ZIP CODE)

Area Code and
Telephone Number______________________________________________

                                       8
<PAGE>
 
                                  INSTRUCTIONS

         FORMING PART OF THE TERMS AND CONDITIONS OF THE EXCHANGE OFFER

     1.   DELIVERY OF LETTER OF TRANSMITTAL AND CERTIFICATES; GUARANTEED
DELIVERY PROCEDURES.  This Letter of Transmittal is to be completed either if
(a) Certificates are to be forwarded herewith or (b) tenders are to be made
pursuant to the procedures for tender by book-entry transfer set forth in "The
Exchange Offer--Procedures for Tendering Old Capital Securities" in the
Prospectus.  Certificates, or timely confirmation of a book-entry  transfer of
such Old Capital Securities into the Exchange Agent's account at DTC, as well as
this Letter of Transmittal (or facsimile thereof), properly completed and duly
executed, with any required signature guarantees, and any other documents
required by this Letter of Transmittal, must be received by the Exchange Agent
at its address set forth herein on or prior to the Expiration Date.  Old Capital
Securities may be tendered in whole or in part in the principal amount of
$100,000 (100 Capital Securities) and integral multiples of $1,000 in excess
thereof, provided that, if any Old Capital Securities are tendered for exchange
in part, the untendered principal amount thereof must be $100,000 (100 Capital
Securities) or any integral multiple of $1,000 in excess thereof.

     Holders who wish to tender their Old Capital Securities and (i) whose Old
Capital Securities are not immediately available or (ii) who cannot deliver
their Old Capital Securities, this Letter of Transmittal and all other required
documents to the Exchange Agent on or prior to the Expiration Date or (iii) who
cannot complete the procedures for delivery by book-entry transfer on a timely
basis, may tender their Old Capital Securities by properly completing and duly
executing a Notice of Guaranteed Delivery pursuant to the guaranteed delivery
procedures set forth in "The Exchange Offer--Procedures for Tendering Old
Capital Securities" in the Prospectus.  Pursuant to such procedures: (i) such
tender must be made by or through an Eligible Institution (as defined below);
(ii) a properly completed and duly executed Notice of Guaranteed Delivery,
substantially in the form made available by the Trust, must be received by the
Exchange Agent on or prior to the Expiration Date; and (iii) the Certificates
(or a book-entry confirmation (as defined in this Prospectus)) representing all
tendered Old Capital Securities, in proper form for transfer, together with a
Letter of Transmittal (or facsimile thereof), properly completed and duly
executed, with any required signature guarantees and any other documents
required by this Letter of Transmittal, must be received by the Exchange Agent
within three New York Stock Exchange, Inc. trading days after the date of
execution of such Notice of Guaranteed Delivery, all as provided in "The
Exchange Offer--Procedures for Tendering Old Capital Securities" in the
Prospectus.

     The Notice of Guaranteed Delivery may be delivered by hand or transmitted
by facsimile or mail to the Exchange Agent, and must include a guarantee by an
Eligible Institution in the form set forth in such Notice.  For Old Capital
Securities to be properly tendered pursuant to the guaranteed delivery
procedure, the Exchange Agent must receive a Notice of Guaranteed Delivery on or
prior to the Expiration Date.  As used herein and in the Prospectus, "Eligible
Institution" means a firm or other entity identified in Rule 17Ad-15 under the
Exchange Act as "an eligible guarantor institution," including (as such terms
are defined therein) (i) a bank; (ii) a broker, dealer, municipal securities
broker or dealer or government securities broker or dealer; (iii) a credit
union; (iv) a national securities exchange, registered securities association or
clearing agency; or (v) a savings association that is a participant in a
Securities Transfer Association.

     THE METHOD OF DELIVERY OF CERTIFICATES, THIS LETTER OF TRANSMITTAL AND ALL
OTHER REQUIRED DOCUMENTS IS AT THE OPTION AND SOLE RISK OF THE TENDERING HOLDER
AND THE DELIVERY WILL BE DEEMED MADE ONLY WHEN ACTUALLY RECEIVED BY THE EXCHANGE
AGENT.  IF DELIVERY IS BY MAIL, REGISTERED MAIL  WITH RETURN RECEIPT REQUESTED,
PROPERLY INSURED, OR OVERNIGHT DELIVERY SERVICE IS RECOMMENDED.  IN ALL CASES,
SUFFICIENT TIME SHOULD BE ALLOWED TO ENSURE TIMELY DELIVERY.

     Neither the Company nor the Trust will accept any alternative, conditional
or contingent tenders.  Each tendering holder, by execution of a Letter of
Transmittal (or facsimile thereof), waives any right to receive any notice of
the acceptance of such tender.

                                       9
<PAGE>
 
     2.   GUARANTEE OF SIGNATURES.  No signature guarantee on this Letter of
Transmittal is required if:

          (i)  this Letter of Transmittal is signed by the registered holder
               (which term, for purposes of this document, shall include any
               participant in DTC whose name appears on a security position
               listing as the owner of the Old Capital Securities) of Old
               Capital Securities  tendered herewith, unless such holder(s) has
               completed either the box entitled "Special Issuance Instructions"
               or the box entitled "Special Delivery  Instructions" above, or

          (ii) such Old Capital Securities are tendered for the account of a
               firm that is an Eligible Institution.

     In all other cases, an Eligible Institution must guarantee the signature(s)
on this Letter of Transmittal.  See Instruction 5.

     3.   INADEQUATE SPACE.  If the space provided in the box captioned
"Description of Old Capital Securities" is inadequate, the Certificate number(s)
and/or the principal amount of Old Capital Securities and any other required
information should be listed on a separate signed schedule which is attached to
this Letter of Transmittal.

     4.   PARTIAL TENDERS AND WITHDRAWAL RIGHTS.  Tenders of Old Capital
Securities will be accepted only in the principal amount of $100,000 (100
Capital Securities) and integral multiples of $1,000 in excess thereof, provided
that if any Old Capital Securities are tendered for exchange in part, the
untendered principal amount thereof must be $100,000 (100 Capital Securities) or
any integral multiple of $1,000 in excess thereof.  If less than all the Old
Capital Securities evidenced by any Certificate submitted are to be tendered,
fill in the principal amount of Old Capital Securities which are to be tendered
in the box entitled "Principal Amount of Old Capital Securities Tendered." In
such case, new Certificate(s) for the remainder of the Old Capital Securities
that were evidenced by your old Certificate(s) will only be sent to the holder
of the Old Capital Security, promptly after the Expiration Date.  All Old
Capital Securities represented by Certificates delivered to the Exchange Agent
will be deemed to have been tendered unless otherwise indicated.

     Except as otherwise provided herein, tenders of Old Capital Securities may
be withdrawn at any time on or prior to the Expiration Date.  In order for a
withdrawal to be effective on or prior to that time, a written, telegraphic,
telex or facsimile transmission of such notice of withdrawal must be timely
received by the Exchange Agent at one of its addresses set forth above or in the
Prospectus on or prior to the Expiration Date.  Any such notice of withdrawal
must specify the name of the person who tendered the Old Capital Securities to
be withdrawn, the aggregate principal amount of Old Capital Securities to be
withdrawn, and (if Certificates for Old Capital Securities have been tendered)
the name of  the registered holder of the Old Capital Securities as set forth on
the Certificate for the Old Capital Securities, if different from that of the
person who tendered such Old Capital Securities.  If Certificates for the Old
Capital Securities have been delivered or otherwise identified to the Exchange
Agent, then prior to the physical release of such Certificates for the Old
Capital Securities, the tendering holder must submit the serial numbers shown on
the particular Certificates for the Old Capital Securities to be withdrawn and
the signature on the notice of withdrawal must be guaranteed by an Eligible
Institution, except in the case of Old Capital Securities tendered for the
account of an Eligible Institution.  If Old Capital Securities have been
tendered pursuant to the procedures for book-entry transfer set forth in the
Prospectus under "The Exchange Offer--Procedures for Tendering Old Capital
Securities," the notice of withdrawal must specify the name and number of the
account at DTC to be credited with the withdrawal of Old Capital Securities, in
which case a notice of withdrawal will be effective if delivered to the Exchange
Agent by written, telegraphic, telex or facsimile transmission. Withdrawals of
tenders of Old Capital Securities may not be rescinded.  Old Capital Securities
properly withdrawn will not be deemed validly tendered for purposes of the
Exchange Offer, but may be retendered at any subsequent time on or prior to the
Expiration Date by following any of the procedures described in the Prospectus
under "The Exchange Offer--Procedures for Tendering Old Capital Securities."

     All questions as to the validity, form and eligibility (including time of
receipt) of such withdrawal notices will 

                                      10
<PAGE>
 
be determined by the Company and the Trust, in their sole discretion, whose
determination shall be final and binding on all parties. Neither the Company,
the Trust, any affiliates or assigns of the Company or the Trust, the Exchange
Agent nor any other person shall be under any duty to give any notification of
any irregularities in any notice of withdrawal or incur any liability for
failure to give any such notification. Any Old Capital Securities which have
been tendered but which are withdrawn will be returned to the holder thereof
without cost to such holder promptly after withdrawal.

     5.   SIGNATURES ON LETTER OF TRANSMITTAL, ASSIGNMENTS AND ENDORSEMENTS.  If
this Letter of Transmittal is signed by the registered holder(s) of the Old
Capital Securities tendered hereby, the signature(s) must correspond exactly
with the name(s) as written on the face of the Certificate(s) without
alteration, enlargement or any change whatsoever.

     If any of the Old Capital Securities tendered hereby are owned of record by
two or more joint owners, all such owners must sign this Letter of Transmittal.

     If any tendered Old Capital Securities are registered in different name(s)
on several Certificates, it will be necessary to complete, sign and submit as
many separate Letters of Transmittal (or facsimiles thereof) as there are
different registrations of Certificates.

     If this Letter of Transmittal or any Certificates or bond powers are signed
by trustees, executors, administrators, guardians, attorneys-in-fact, officers
of corporations or others acting in a fiduciary or representative capacity, such
persons should so indicate when signing and must submit proper evidence
satisfactory to the Company and the Trust, in their sole discretion, of each
such person's authority so to act.

     When this Letter of Transmittal is signed by the registered owner(s) of the
Old Capital Securities listed and transmitted hereby, no endorsement(s) of
Certificate(s) or separate bond power(s) are required unless New Capital
Securities are to be issued in the name of a person other than the registered
holder(s).  Signature(s) on such Certificate(s) or bond power(s) must be
guaranteed by an Eligible Institution.

     If this Letter of Transmittal is signed by a person other than the
registered owner(s) of the Old Capital Securities listed, the Certificates must
be endorsed or accompanied by appropriate bond powers, signed exactly as the
name or names of the registered owner(s) appear(s) on the Certificates, and also
must be accompanied by such opinions of counsel, certifications and other
information as the Company, the Trust or the Trustee for the Old Capital
Securities may require in accordance with the restrictions on transfer
applicable to the Old Capital Securities.  Signatures on such Certificates or
bond powers must be guaranteed by an Eligible Institution.

     6.   SPECIAL ISSUANCE AND DELIVERY INSTRUCTIONS.  If New Capital Securities
are to be issued in the name of a person other than the signer of this Letter of
Transmittal, or if New Capital Securities are to be sent to someone other than
the signer of this Letter of Transmittal or to an address other than that shown
above, the appropriate boxes on this Letter of Transmittal should be completed.
Certificates for Old Capital Securities not exchanged will be returned by mail
or, if tendered by book-entry transfer, by crediting the account indicated above
maintained at DTC.  See Instruction 4.

     7.   IRREGULARITIES.  The Company and the Trust will determine, in their
sole discretion, all questions as to the form of documents, validity,
eligibility (including time of receipt) and acceptance for exchange of any
tender of Old Capital Securities, which determination shall be final and binding
on all parties.  The Company and the Trust reserve the absolute right to reject
any and all tenders determined by either of them not to be in proper form or the
acceptance of which, or exchange for which, may, in the view of counsel to the
Company and the Trust be unlawful.  The Company and the Trust also reserve the
absolute right, subject to applicable law, to waive any of the conditions of the
Exchange Offer set forth in the Prospectus under "The Exchange Offer--Conditions
to the Exchange Offer" or any conditions or irregularity in any tender of Old
Capital Securities of any particular holder whether or not similar conditions or
irregularities are waived in the case of other holders.  The Company's and the
Trust's interpretation of the terms and conditions of the Exchange Offer
(including this Letter of Transmittal and the instructions hereto) will be final
and binding.  No tender of Old Capital Securities will be deemed to have been
validity made until all irregularities with 

                                      11
<PAGE>
 
respect to such tender have been cured or waived. The Company, the Trust, any
affiliates or assigns of the Company, the Trust, the Exchange Agent, or any
other person shall not be under any duty to give notification of any
irregularities in tenders or incur any liability for failure to give such
notification.


     8.   QUESTIONS, REQUESTS FOR THE ASSISTANCE AND ADDITIONAL COPIES.
Questions and requests for assistance may be directed to the Exchange Agent at
its address and telephone number set forth on the front of this Letter of
Transmittal.  Additional copies of the Prospectus, the Notice of Guaranteed
Delivery and the Letter of Transmittal may be obtained from the Exchange Agent
or from your broker, dealer, commercial bank, trust company or other nominee.

     9.   31% BACKUP WITHHOLDING; SUBSTITUTE FORM W-9.  Under U.S. Federal
income tax law, a holder whose tendered Old Capital Securities are accepted for
exchange is required to provide the Exchange Agent with such holder's correct
taxpayer identification number ("TIN") on Substitute Form W-9 below.  If the
Exchange Agent is not provided with the correct TIN, the Internal Revenue
Service (the "IRS") may subject the holder or other payee to a $50 penalty.  In
addition, payments to such holders or other payees with respect to Old Capital
Securities exchanged pursuant to the Exchange Offer may be subject to 31% backup
withholding.

     The box in Part 2 of the Substitute Form W-9 may be checked if the
tendering holder has not been issued a TIN and has applied for a TIN or intends
to apply for a TIN in the near future.  If the box in Part 2 is checked, the
holder or other payee must also complete the Certificate of Awaiting Taxpayer
Identification Number below in order to avoid backup withholding.
Notwithstanding that the box in Part 2 is checked and the Certificate of
Awaiting Taxpayer Identification Number is completed, the Exchange Agent will
withhold 31% of all payments made prior to the time a properly certified TIN is
provided to the Exchange Agent.  The Exchange Agent will retain such amounts
withheld during the 60-day period following the date of the Substitute Form W-9.
If the holder furnishes the Exchange Agent with its TIN within 60 days after the
date of the Substitute Form W-9, the amounts retained during the 60-day period
will be remitted to the holder and no further amounts shall be retained or
withheld from payments made to the holder thereafter. If, however, the holder
has not provided the Exchange Agent with its TIN within such 60-day period,
amounts withheld will be remitted to the IRS as backup withholding.  In
addition, 31% of all payments made thereafter will be withheld and remitted to
the IRS until a correct TIN is provided.

     The holder is required to give the Exchange Agent the TIN (e.g., social
security number or employer identification number) of the registered owner of
the Old Capital Securities or of the last transferee appearing on the transfers
attached to, or endorsed on, the Old Capital Securities.  If the Old Capital
Securities are registered in more than one name or are not in the name of the
actual owner, consult the enclosed "Guidelines for Certification of Taxpayer
Identification Number on Substitute Form W-9" for additional guidance on which
number to report.

     Certain holders (including, among others, corporations, financial
institutions and certain foreign persons) may not be subject to these backup
withholding and reporting requirements.  Such holders should nevertheless
complete the attached Substitute Form W-9 below, and write "exempt" on the face
thereof, to avoid possible erroneous backup withholding.  A foreign person may
qualify as an exempt recipient by submitting a properly completed IRS Form W-8,
signed under penalties of perjury, attesting to that holder's exempt status.
Please consult the enclosed "Guidelines for Certification of Taxpayer
Identification Number on Substitute Form W-9" for additional guidance on which
holders are exempt from backup withholding.

     Backup withholding is not an additional U.S. Federal income tax.  Rather,
the U.S. Federal income tax liability of a person subject to backup withholding
will be reduced by the amount of tax withheld.  If withholding results in an
overpayment of taxes, a refund may be obtained.

     10.  WAIVER OF CONDITIONS.  The Company and the Trust reserve the absolute
right to waive satisfaction of any or all conditions enumerated in the
Prospectus.

     11.  NO CONDITIONAL TENDERS.  No alternative, conditional or contingent
tenders will be accepted. 

                                      12
<PAGE>
 
All tendering holders of Old Capital Securities, by execution of this Letter of
Transmittal, shall waive any right to receive notice of the acceptance of Old
Capital Securities for exchange.

     Neither the Company, the Trust, the Exchange Agent nor any other person is
obligated to give notice of any defect or irregularity with respect to any
tender of Old Capital Securities nor shall any of them incur any liability for
failure to give any such notice.

     12.  LOST, DESTROYED OR STOLEN CERTIFICATES.  If any Certificate(s)
representing Old Capital Securities have been lost, destroyed or stolen, the
holder should promptly notify the Exchange Agent.  The holder will then be
instructed as to the steps that must be taken in order to replace the
Certificate(s).  This Letter of Transmittal and related documents cannot be
processed until the procedures for replacing lost, destroyed or stolen
Certificate(s) have been followed.

     13.  SECURITY TRANSFER TAXES.  Holders who tender their Old Capital
Securities for exchange will not be obligated to pay any transfer taxes in
connection therewith.  If, however, New Capital Securities are to be delivered
to, or are to be issued in the name of, any person other than the registered
holder of the Old Capital Securities tendered, or if a transfer tax is imposed
for any reason other than the exchange of Old Capital Securities in connection
with the Exchange Offer, then the amount of any such transfer tax (whether
imposed on the registered holder or any other persons) will be payable by the
tendering holder.  If satisfactory evidence of payment of such taxes or
exemption therefrom is not submitted with the Letter of Transmittal, the amount
of such transfer taxes will be billed directly to such tendering holder.

          IMPORTANT: THIS LETTER OF TRANSMITTAL (OR FACSIMILE THEREOF)
           AND ALL OTHER REQUIRED DOCUMENTS MUST BE RECEIVED BY THE
               EXCHANGE AGENT ON OR PRIOR TO THE EXPIRATION DATE.

               TO BE COMPLETED BY ALL TENDERING SECURITY HOLDERS
                              (See Instruction 9)
    
                       PAYER'S NAME: BFC Capital Trust I      

<TABLE>     
- ---------------------------------------------------------------------------------------------------------------------------
<S>                    <C>                                                       <C>  
SUBSTITUTE             Part 1--PLEASE PROVIDE YOUR TIN IN THE                    TIN:
Form W-9               BOX AT RIGHT AND CERTIFY BY SIGNING 
                       AND DATING BELOW.                                         ---------------------- 
                                                                                 Social Security Number
                                                                                 or        Employer
                                                                                 Identification Number
 
- ---------------------------------------------------------------------------------------------------------------------------
Department of                                         PART 2--Awaiting TIN       [ ]
the Treasury
Internal Revenue Service

- ---------------------------------------------------------------------------------------------------------------------------
Payer's Request for Taxpayer                          CERTIFICATION--UNDER THE PENALTIES OF PERJURY, I
Identification Number ("TIN") and                     CERTIFY  THAT:
 Certification                                        (1)  the number shown on this form is my correct taxpayer
                                                           identification number (or I am waiting for a number to
                                                           be issued to me).
                                                      (2)  I am not subject to backup withholding either because (i) I am
                                                           exempt from backup withholding, (ii) I have not been notified by
                                                           the Internal Revenue Service ("IRS") that I am subject to backup
                                                           withholding as a result of a failure to report all interest or
                                                           dividends, or (iii) the IRS has notified me that I am no longer
                                                           subject to backup withholding, and
</TABLE>      

                                      13
<PAGE>
 
                      (3)  any other information provided on this form is true
                           and correct.
                              

                      Signature_____________________   Date_______________,1997.


________________________________________________________________________________
You must cross out item (iii) in Part (2) above if you have been notified by the
IRS that you are subject to backup withholding because of underreporting
interest or dividends on your tax return and you have not been notified by the
IRS that you are no longer subject to backup withholding.

________________________________________________________________________________

NOTE: FAILURE TO COMPLETE AND RETURN THIS FORM MAY IN CERTAIN CIRCUMSTANCES
RESULT IN BACKUP WITHHOLDING OF 31% OF ANY AMOUNTS PAID TO YOU PURSUANT TO THE
EXCHANGE OFFER.  PLEASE REVIEW THE ENCLOSED GUIDELINES FOR CERTIFICATION OF
TAXPAYER IDENTIFICATION NUMBER ON SUBSTITUTE FORM W-9 FOR ADDITIONAL DETAILS.

YOU MUST COMPLETE THE FOLLOWING CERTIFICATE IF YOU CHECKED THE BOX IN PART 2 OF
THE SUBSTITUTE FORM W-9

________________________________________________________________________________

             CERTIFICATE OF AWAITING TAXPAYER IDENTIFICATION NUMBER

     I certify under penalties of perjury that a taxpayer identification number
has not been issued to me, and either (1) I have mailed or delivered an
application to receive a taxpayer identification number to the appropriate
Internal Revenue Service Center or Social Security Administration Office or (2)
I intend to mail or deliver an application in the near future.  I understand
that if I do not provide a taxpayer identification number by the time of
payment, 31% of all payments made to me on account of the New Capital Securities
shall be retained until I provide a taxpayer identification number to the
Exchange Agent and that, if I do not provide my taxpayer identification number
within 60 days, such retained amounts shall be remitted to the Internal Revenue
Service as backup withholding and 31% of all reportable payments made to me
thereafter will be withheld and remitted to the Internal Revenue Service until I
provide a taxpayer identification number.

Signature ________________________________  Date ____________________, 1997.

                                      14

<PAGE>
 
                                                                    EXHIBIT 99.2


                         NOTICE OF GUARANTEED DELIVERY
                                 FOR TENDER OF
                      9.65% CAPITAL SECURITIES, SERIES A
               (LIQUIDATION AMOUNT $1,000 PER CAPITAL SECURITY)
                                      OF
                              BFC CAPITAL TRUST I
                    FULLY AND UNCONDITIONALLY GUARANTEED BY
                             BANCFIRST CORPORATION

          This Notice of Guaranteed Delivery, or one substantially equivalent to
     this form, must be used to accept the Exchange Offer (as defined below) if
     (i) certificates for the Trust's (as defined below) 9.65% Capital
     Securities, Series A (the "Old Capital Securities") are not immediately
     available, (ii) Old Capital Securities, the Letter of Transmittal and all
     other required documents cannot be delivered to The Bank of New York (the
     "Exchange Agent") on or prior to the Expiration Date (as defined in the
     Prospectus referred to below) or (iii) the procedures for delivery by book-
     entry transfer cannot be completed on a timely basis. This Notice of
     Guaranteed Delivery may be delivered by hand, overnight courier or mail, or
     transmitted by facsimile transmission, to the Exchange Agent. See "The
     Exchange Offer--Procedures for Tendering Old Capital Securities" in the
     Prospectus. In addition, in order to utilize the guaranteed delivery
     procedure to tender Old Capital Securities pursuant to the Exchange Offer,
     a completed, signed and dated Letter of Transmittal relating to the Old
     Capital Securities (or facsimile thereof) must also be received by the
     Exchange Agent on or prior to the Expiration Date. Capitalized terms not
     defined herein have the meanings assigned to them in the Prospectus.

                 The Exchange Agent For The Exchange Offer Is:
                             The Bank Of New York

<TABLE>
     <S>                                       <C>                             <C>
- -----------------------------------------------------------------------------------------------------------------------
     BY HAND OR OVERNIGHT DELIVERY:              FACSIMILE TRANSMISSIONS:       BY REGISTERED OR CERTIFIED MAIL:
     -----------------------------                                              -------------------------------   
                                               (Eligible Institutions Only)
        The Bank of New York                          (212) 571-3080                    The Bank of New York
         101 Barclay Street                                                             101 Barclay Street, 7E
Corporate Trust Services Window                   CONFIRM BY TELEPHONE              New York, New York 10286
          Ground Level                         OR FOR INFORMATION CALL:        Attention:  Reorganization Department,
     New York, New York 10286                         (212) 815-4997                       George Johnson
Attention:  Reorganization Department,
          George Johnson
- -----------------------------------------------------------------------------------------------------------------------
</TABLE>

          Delivery of this Notice of Guaranteed Delivery to an address other
     than as set forth above or transmission of this Notice of Guaranteed
     Delivery via facsimile to a number other than as set forth above will not
     constitute a valid delivery.

          THIS NOTICE OF GUARANTEED DELIVERY IS NOT TO BE USED TO GUARANTEE
     SIGNATURES. IF A SIGNATURE ON A LETTER OF TRANSMITTAL IS REQUIRED TO BE
     GUARANTEED BY AN "ELIGIBLE INSTITUTION" UNDER THE INSTRUCTIONS THERETO,
     SUCH SIGNATURE GUARANTEE MUST APPEAR IN THE APPLICABLE SPACE PROVIDED IN
     THE SIGNATURE BOX ON THE LETTER OF TRANSMITTAL.


     Ladies and Gentlemen:
    
          The undersigned hereby tenders to BFC Capital Trust I, a Delaware
     business trust (the "Trust") and to BancFirst Corporation, an Oklahoma
     Corporation (the "Company"), upon the terms and subject to the conditions
     set forth in the Prospectus dated July 7, 1997 (as the same may be
     amended or supplemented from time to time, the "Prospectus"),      

                                       1
<PAGE>
 
and the related Letter of Transmittal (which together constitute the "Exchange
Offer"), receipt of which is hereby acknowledged, the aggregate principal amount
of Old Capital Securities set forth below pursuant to the guaranteed delivery
procedures set forth in the Prospectus under the caption "The Exchange Offer--
Procedures for Tendering Old Capital Securities."
    
Aggregate Principal Amount                    Name(s) of Registered Holder(s):
Amount Tendered: $_____________________       __________________________________

Certificate No(s) (if available):______       Addresses(es):
                                              __________________________________
_______________________________________       __________________________________

                                              Area Code and Telephone Number(s):
If Old Capital Securities will be             __________________________________
tendered by book-entry transfer, 
provide the following information:            Signature(s):_____________________

DTC Account Number:____________________       __________________________________

Date:__________________________________

              THE GUARANTEE ON THE REVERSE SIDE MUST BE COMPLETED      

                                       2
<PAGE>
 
         
                                   GUARANTEE
                   (NOT TO BE USED FOR SIGNATURE GUARANTEE)

     The undersigned, a firm or other entity identified in Rule 17Ad-15 under
the Securities Exchange Act of 1934, as amended, as an "eligible guarantor
institution," including (as such terms are defined therein): (i) a bank; (ii) a
broker, dealer, municipal securities broker, municipal securities dealer,
government securities broker or government securities dealer; (iii) a credit
union; (iv) a national securities exchange, registered securities association or
learning agency; or (v) a savings association that is a participant in a
Securities Transfer Association recognized program (each of the foregoing being
referred to as an "Eligible Institution"), hereby guarantees to deliver to the
Exchange Agent, at one of its addresses set forth above, either the Old Capital
Securities tendered hereby in proper form for transfer, or confirmation of the
book-entry transfer of such Old Capital Securities to the Exchange Agent's
account at The Depository Trust Company ("DTC"), pursuant to the procedures for
book-entry transfer set forth in the Prospectus, in either case together with
one or more properly completed and duly executed Letter(s) of Transmittal (or
facsimile thereof) and any other required documents within three business days
after the date of execution of this Notice of Guaranteed Delivery.

     The undersigned acknowledges that it must deliver the Letter(s) of
Transmittal and the Old Capital Securities tendered hereby to the Exchange Agent
within the time period set forth above and that failure to do so could result in
a financial loss to the undersigned.

__________________________________           ___________________________________
         Name of Firm                                Authorized Signature

__________________________________           ___________________________________
            Address                                  Title

__________________________________           ___________________________________
           Zip Code                                  (Please Type or Print)

Area Code and Telephone No. __________       Dated: ________________
    
NOTE: DO NOT SEND CERTIFICATES FOR OLD CAPITAL SECURITIES WITH THIS FORM.
CERTIFICATES FOR OLD CAPITAL SECURITIES SHOULD ONLY BE SENT WITH YOUR LETTER OF
TRANSMITTAL AND ANY OTHER REQUIRED DOCUMENTS.      

                                       3


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