COASTAL CORP
424B5, 1999-07-30
NATURAL GAS TRANSMISSION
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<PAGE>   1

                                                Filed pursuant to Rule 424(b)(5)
                                                              File No. 333-81095
PROSPECTUS SUPPLEMENT

(TO PROSPECTUS DATED JULY 2, 1999)

                          16,000,000 FELINE PRIDES(SM)
  (CONSISTING OF 14,600,000 INCOME PRIDES(SM) AND 1,400,000 GROWTH PRIDES(SM))
                 $35,000,000 6 5/8% SENIOR DEBENTURES DUE 2004

                            THE COASTAL CORPORATION
         [COASTAL CORPORATION LOGO]
                  (R)

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

     This is an offering of 16,000,000 FELINE PRIDES(SM) by The Coastal
Corporation. The FELINE PRIDES consist of separately offered and separately
traded units referred to as "Income PRIDES" and "Growth PRIDES" and $35,000,000
aggregate principal amount of Coastal's separately offered and separately traded
6 5/8% senior debentures due 2004. A component of both an Income PRIDES and a
Growth PRIDES is a purchase contract pursuant to which you will agree to
purchase from us shares of our common stock on August 16, 2002 as described in
this prospectus supplement. We are also offering $365,000,000 aggregate
principal amount of debentures that will initially be held as components of the
Income PRIDES and will not be offered or traded separately from the Income
PRIDES, unless and until substitution is made as described in this prospectus
supplement.

     The Income PRIDES and Growth PRIDES have been approved for listing on the
New York Stock Exchange, or NYSE, under the symbols "CGPPrI" and "CGPPrG,"
respectively. On July 28, 1999, the last reported sale price of our common stock
on the NYSE was $38 1/16 per share.

     INVESTING IN THE SECURITIES INVOLVES CERTAIN RISKS WHICH ARE DESCRIBED IN
THE "RISK FACTORS" SECTION BEGINNING ON PAGE S-11 OF THIS PROSPECTUS SUPPLEMENT.
                            ------------------------

                            PUBLIC OFFERING PRICE(1)
                            $25.00 per Income PRIDES
                            $21.51 per Growth PRIDES
            98.5873% of the aggregate principal amount of debentures

<TABLE>
<CAPTION>
                                                              UNDERWRITING        PROCEEDS TO
                                                               COMMISSION         COASTAL(2)
                                                              ------------        -----------
<S>                                                           <C>                 <C>
Total.......................................................  $12,000,000         $388,000,000
</TABLE>

        (1) Plus, as applicable, accrued interest and contract
            adjustment payments, if any, from August 3, 1999. The public
            offering price of each Income PRIDES and Growth PRIDES will
            be allocated between the related purchase contract and the
            related debenture, in the case of Income PRIDES, and between
            the related purchase contract and the related interest in a
            Treasury security, in the case of Growth PRIDES, as
            applicable, in proportion to their respective fair market
            values at the time of purchase.

        (2) Such amount does not include $29,619,100 used to purchase
            the Treasury securities component of the 1,400,000 Growth
            PRIDES.

     The underwriters may also purchase up to an additional 2,400,000 FELINE
PRIDES, in any combination of Income PRIDES and Growth PRIDES, at their public
offering prices less underwriting commissions, within 30 days of the date hereof
in order to cover over-allotments, if any; provided, however, that the
underwriters must also purchase at least as many debentures as Growth PRIDES. If
such option is exercised in full, the total underwriting commission and proceeds
to Coastal will be $13,800,000 and $446,200,000, respectively.

     Neither the Securities and Exchange Commission nor any state securities
commission has approved or disapproved of these securities or passed upon the
accuracy or adequacy of this prospectus supplement or the accompanying
prospectus. Any representation to the contrary is a criminal offense.

     The securities will be ready for delivery in New York, New York on or about
August 3, 1999.
                            ------------------------

                              Joint Lead Managers

MERRILL LYNCH & CO.                                              LEHMAN BROTHERS
                            ------------------------
                         BANC OF AMERICA SECURITIES LLC
                            ------------------------

            The date of this prospectus supplement is July 28, 1999.

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

(SM) Service Mark of Merrill Lynch & Co., Inc.
<PAGE>   2

                               TABLE OF CONTENTS

<TABLE>
<CAPTION>
                                                              PAGE
                                                              ----
<S>                                                           <C>
                      PROSPECTUS SUPPLEMENT
Prospectus Supplement Summary...............................   S-1
Risk Factors................................................  S-11
Forward-Looking Statements..................................  S-15
Selected Consolidated Financial Data........................  S-16
Price Range of Common Stock and Dividends...................  S-17
Use of Proceeds.............................................  S-17
Capitalization..............................................  S-18
Accounting Treatment........................................  S-19
Description of the FELINE PRIDES............................  S-20
Description of the Purchase Contracts.......................  S-24
Certain Provisions of the Purchase Contract Agreement and
  the Pledge Agreement......................................  S-34
Description of the Debentures...............................  S-37
Certain Federal Income Tax Consequences.....................  S-42
ERISA Considerations........................................  S-48
Underwriting................................................  S-49
Legal Opinions..............................................  S-50

                            PROSPECTUS
Where You Can Find More Information.........................     1
Incorporation of Certain Documents by Reference.............     2
The Coastal Corporation.....................................     3
The Trusts..................................................     3
Use of Proceeds.............................................     4
Accounting Treatment Relating to Trust Securities...........     4
Ratios of Earnings to Fixed Charges and Earnings to Combined
  Fixed Charges and Preferred Stock Dividends...............     4
Description of Equity Securities............................     5
Description of Common Stock Warrants........................    12
Description of Trust Preferred Securities...................    14
Description of Trust Preferred Securities Guarantees........    15
Description of Debt Securities..............................    18
Description of Subordinated Deferrable Interest
  Debentures................................................    30
Description of Stock Purchase Contracts and Stock Purchase
  Units.....................................................    36
Plan of Distribution........................................    36
Legal Matters...............................................    38
Experts.....................................................    38
</TABLE>

     NO DEALER, SALESPERSON OR OTHER INDIVIDUAL HAS BEEN AUTHORIZED TO GIVE ANY
INFORMATION OR TO MAKE ANY REPRESENTATION OTHER THAN THOSE CONTAINED OR
INCORPORATED BY REFERENCE IN THIS PROSPECTUS SUPPLEMENT AND THE ACCOMPANYING
PROSPECTUS IN CONNECTION WITH THE OFFER MADE BY THIS PROSPECTUS SUPPLEMENT AND
THE ACCOMPANYING PROSPECTUS AND, IF GIVEN OR MADE, SUCH INFORMATION OR
REPRESENTATION MUST NOT BE RELIED UPON AS HAVING BEEN AUTHORIZED BY COASTAL OR
ANY UNDERWRITER. NEITHER THE DELIVERY OF THIS PROSPECTUS SUPPLEMENT AND THE
ACCOMPANYING PROSPECTUS, NOR ANY SALE MADE HEREUNDER, SHALL UNDER ANY
CIRCUMSTANCES, CREATE AN IMPLICATION THAT THERE HAS BEEN NO CHANGE IN THE
AFFAIRS OF COASTAL SINCE THE DATE HEREOF. THIS PROSPECTUS SUPPLEMENT AND THE
ACCOMPANYING PROSPECTUS SHALL NOT CONSTITUTE AN OFFER OR SOLICITATION BY ANYONE
IN ANY STATE 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.

                                        i
<PAGE>   3

                         PROSPECTUS SUPPLEMENT SUMMARY

                            THE COASTAL CORPORATION

DESCRIPTION OF BUSINESS

     We, acting through our subsidiaries, are a diversified energy holding
company with operations in:

     - natural gas gathering, marketing, processing, storage and transmission;

     - petroleum refining, marketing and distribution, and chemicals;

     - gas and oil exploration and production;

     - coal mining; and

     - power.

     Natural Gas Systems. Our natural gas pipelines are involved in the natural
gas gathering, marketing, processing, storage, and transmission of natural gas.
Our major natural gas pipeline subsidiaries include ANR Pipeline Company and
Colorado Interstate Gas Company. We also own or have interests in other pipeline
systems including Wyoming Interstate Company Ltd., Alliance Pipeline System,
Great Lakes Gas Transmission L.P. and Empire State Pipeline. Our pipeline
system, including our share of joint ventures, had an average daily net
throughput of 8 billion cubic feet, or Bcf, of natural gas in 1998, equal to
about 13% of the natural gas consumed in the United States. ANR Pipeline
transports natural gas to the Midwest and the Northeast, principally from
production areas in the mid-continent, offshore Texas and Louisiana and onshore
Louisiana. ANR Pipeline's principal facilities at December 31, 1998 consisted of
10,600 miles of pipeline and had a design peak day delivery capacity of
approximately 5.9 Bcf. Colorado Interstate's natural gas transmission system
extends from production areas in the mid-continent and the northern Rockies to
the Denver area. Colorado Interstate's principal facilities at December 31, 1998
consisted of 4,351 miles of pipeline and had a design peak day delivery capacity
of approximately 2.2 Bcf. Colorado Interstate also owns over 2,300 miles of
gathering facilities and five gas processing plants with an operating capacity
of approximately 512 million cubic feet per day located in production areas
adjacent to its transmission system. We also operate one of the largest natural
gas storage systems in the United States with a working capacity of 274 Bcf in
27 storage fields. In addition, we operate an unregulated natural gas business.
Engage Energy US, L.P. and Engage Energy Canada, L.P., 50% owned joint ventures,
handle our unregulated natural gas and power marketing in North America. Both
joint ventures provide wholesale energy services to natural gas and power
clients and marketing services for certain of our operating segments.

     Refining, Marketing and Chemicals. We have operations involved in the
purchase, transportation and sale of refined products, crude oil, condensate and
natural gas liquids; the operation of refineries and chemical plants; the sale
at retail of gasoline, petroleum products and convenience items; petroleum
product terminaling; and marketing of crude oil and refined products worldwide.
Our refineries, which are located in Aruba, Texas, Alabama and New Jersey, have
a combined refining capacity of 483,000 barrels per day and produce a full range
of petroleum products. We have undertaken a number of initiatives in recent
years to increase the capacities, efficiencies and underlying economics of our
refineries. These initiatives have included the installation of new and the
upgrading of existing facilities, the implementation of new processes, and the
arrangement of long-term crude oil supply. Through Coastal Mart, Inc. and
branded marketers, we conduct retail marketing using the C-MART(R), C and Design
and/or COASTAL(R) trademarks in 34 states and Aruba through approximately 1,550
Coastal branded outlets. We operate chemical plants in Nevada, Oregon, Texas and
Wyoming, manufacturing products for the agriculture, refining and mining
industries.

     Exploration and Production. We are engaged in gas and oil exploration,
development and production operations primarily in the United States, as well as
in certain foreign countries. Our domestic proved reserves of crude oil,
condensate and natural gas liquids at December 31, 1998 were 52.3 million
barrels,

                                       S-1
<PAGE>   4

and our proved natural gas reserves were 2,527.1 Bcf; these reserves constitute
increases of 30% and 44% over our 1997 year end crude oil, condensate and
natural gas liquids reserves and our 1997 year end natural gas reserves,
respectively. In 1998, natural gas production averaged 509 million cubic feet
per day, a 17% increase over 1997, and crude oil, condensate and natural gas
liquids net production averaged 15,281 barrels per day, a 13% increase over
1997. Many of our domestic gas wells are located in areas near, and are
connected to, our natural gas systems. Generally, our domestic production of
crude oil, condensate and natural gas liquids is purchased by marketing and
refining affiliates.

     Other Operations. Through the operations of Coastal Coal Company, LLC and
its affiliates, we produce and market high quality bituminous coal from reserves
in the eastern United States. Through Coastal Power Company and its affiliates,
we develop, operate and own various equity interests in cogeneration and
independent power projects. Coastal Power has interests in five operating
domestic cogeneration projects and nine foreign operating independent power
projects as well as interests in other projects in various stages of development
and construction. The projects produce and sell electrical and thermal energy.

BUSINESS STRATEGY

     Our business strategy is to maximize earnings and enhance shareholder value
through optimizing the competitive advantages of our strategically integrated
and diverse base of energy assets and operations. We focus on core geographic
regions, such as North America, where we enjoy a strong base of assets and
substantial opportunities to expand our operations. Our natural gas segment
constitutes an extensive physical asset base and generates earnings and cash
flow which we use to exploit growth opportunities in additional natural gas
projects and higher growth businesses such as gas and oil exploration and
production and power generation. We are also committed to maintaining a strong
financial position to ensure the availability of funding of identified capital
expenditures and opportunistic acquisitions and other projects.

RECENT DEVELOPMENTS

     On July 22, 1999, we reported record second quarter 1999 earnings from
continuing operations of $93.3 million, or $0.43 diluted earnings per share,
versus comparable second quarter 1998 earnings from continuing operations of
$91.5 million, or $0.42 diluted earnings per share. Coastal's net earnings for
the 1999 second quarter were $93.3 million, or $0.43 per share, versus $94.6
million, or $0.43 per share, for the second quarter of 1998. The 1998 second
quarter included earnings of $3.1 million relating to discontinued operations.
Our overall earnings before interest and income taxes ("EBIT") were $208.7
million for the second quarter of 1999 compared with $204.0 million for the
second quarter of 1998. The increase over 1998 can primarily be attributed to
the natural gas segment, which increased EBIT by $15.9 million. The exploration
and production segment reported a $6.2 million decrease in 1999 second quarter
EBIT versus 1998 second quarter EBIT, due to lower prices for natural gas and
reduced crude oil and condensate production in 1999, partially offset by an
increase in natural gas production and higher crude oil and condensate prices.
The decline in crude oil and condensate production reflects Coastal's strong
emphasis on natural gas production. The refining, marketing and chemicals
segment reported a $6.3 million decrease in EBIT in the 1999 second quarter
versus the 1998 second quarter due to weak refining margins, largely offset by
improvements in marketing and trading operations.

                                       S-2
<PAGE>   5

                              THE OFFERING -- Q&A

WHAT ARE THE COMPONENTS OF AN INCOME PRIDES?

     Each Income PRIDES consists of a purchase contract and $25 aggregate
principal amount of our debentures. The debenture that is a component of each
Income PRIDES is owned by you, but will be pledged to us to secure your
obligations under the purchase contract.

WHAT ARE THE COMPONENTS OF A GROWTH PRIDES?

     Each Growth PRIDES consists of a purchase contract and a Treasury security.
The Treasury security is a 2.5% undivided beneficial interest in a zero-coupon
U.S. Treasury security with a principal amount of $1,000 that matures on August
15, 2002. The Treasury security that is a component of each Growth PRIDES will
be owned by you, but will be pledged to us to secure your obligations under the
purchase contract.

WHAT IS A PURCHASE CONTRACT?

     Each purchase contract underlying a FELINE PRIDES obligates the holder of
the purchase contract to purchase, and obligates us to sell, on August 16, 2002,
for $25, a fraction of a newly issued share of our common stock equal to the
"settlement rate." The settlement rate will be calculated, subject to adjustment
under the circumstances set forth in "Description of the Purchase
Contracts -- Anti-Dilution Adjustments," as follows:

          (a) if the applicable market value of our common stock is equal to or
     greater than the threshold appreciation price of $46.436, the settlement
     rate will be .5384;

          (b) if the applicable market value of our common stock is less than
     the threshold appreciation price but greater than the reference price, the
     settlement rate will be equal to the stated amount divided by the
     applicable market value; and

          (c) if the applicable market value is less than or equal to the
     reference price, the settlement rate will be .6568.

     "Applicable market value" means the average of the closing price per share
of common stock on each of the twenty consecutive trading days ending on the
third trading day immediately preceding August 16, 2002. The "reference price"
is $38 1/16, which is the last reported sales price of our common stock on the
NYSE on July 28, 1999.

HOW CAN I CREATE GROWTH PRIDES FROM INCOME PRIDES?

     Each holder of Income PRIDES, unless a tax event redemption has occurred,
will have the right, at any time on or prior to the fifth business day
immediately preceding August 16, 2002, to substitute for the related debentures,
zero-coupon Treasury securities that mature on August 15, 2002 in a total
principal amount at maturity equal to the aggregate principal amount of such
debentures. This substitution will create Growth PRIDES. Because Treasury
securities are issued in multiples of $1,000, holders of Income PRIDES may make
such substitution only in integral multiples of 40 Income PRIDES. However, if a
tax event redemption has occurred prior to August 16, 2002 and the Treasury
portfolio has become a component of the Income PRIDES, holders of Income PRIDES
may make substitutions only in multiples of 3,200,000 Income PRIDES, at any time
on or prior to the second business day immediately preceding August 16, 2002.
Holders must also obtain the release of the appropriate applicable ownership
interest in the Treasury portfolio rather than a release of the applicable
debentures.

HOW CAN I CREATE INCOME PRIDES FROM GROWTH PRIDES?

     Each holder of Growth PRIDES will have the right, at any time on or prior
to the fifth business day immediately preceding August 16, 2002, to substitute
for the related Treasury securities held by the
                                       S-3
<PAGE>   6

collateral agent debentures in an aggregate principal amount equal to the
aggregate principal amount at stated maturity of the Treasury securities. This
substitution would create Income PRIDES. Because Treasury securities are issued
in integral multiples of $1,000, holders of Growth PRIDES may make these
substitutions only in integral multiples of 40 Growth PRIDES. If a tax event
redemption has occurred and the Treasury portfolio has become a component of the
Income PRIDES, holders of the Growth PRIDES may make such substitution only in
integral multiples of 3,200,000 Growth PRIDES at any time on or prior to the
second business day immediately preceding August 16, 2002.

WHAT PAYMENTS AM I ENTITLED TO AS A HOLDER OF INCOME PRIDES?

     Holders of Income PRIDES will be entitled to receive total cash
distributions at a rate of 6.625% of the stated amount per year, payable
quarterly in arrears. These cash distributions will consist of cumulative
distributions on the related debentures payable by us at the rate of 6.625% of
the stated amount per year subject to our right to defer the payment of such
amounts. Each Income PRIDES has a stated amount of $25.

WHAT PAYMENTS AM I ENTITLED TO AS A HOLDER OF GROWTH PRIDES?

     Holders of Growth PRIDES will be entitled to receive quarterly cash
distributions of contract adjustment payments payable by us at the rate of .25%
of the stated amount per year, subject to our rights of deferral described
herein. In addition, interest will accrue on each related Treasury security.
Each Growth PRIDES has a stated amount of $25.

DO WE HAVE THE OPTION TO DEFER CURRENT PAYMENTS?

     We have the right at any time, and from time to time, limited to a period
not extending beyond the maturity date of our debentures due August 16, 2002 and
initially bearing interest at 6.625% per year, to defer the interest payments
due on the debentures. As a consequence of such deferral, the corresponding
quarterly distributions to holders of Income PRIDES would be deferred. Despite
this deferral, such distributions would continue to accrue until paid,
compounded quarterly, at the rate of 6.625% per year through and including
August 15, 2002, and at the reset rate thereafter. We also have the right to
defer the payment of contract adjustment payments on the Growth PRIDES until no
later than August 16, 2002. However, such deferred contract adjustment payments
would accrue additional contract adjustment payments at the rate of 6.625% per
year until paid, compounded quarterly through and including August 15, 2002.

WHAT ARE THE PAYMENT DATES FOR THE FELINE PRIDES?

     The current payments described above in respect of the Income PRIDES and
Growth PRIDES will be payable quarterly in arrears on February 16, May 16,
August 16 and November 16 of each year, commencing November 16, 1999. In the
case of contract adjustment payments, the payments will be payable through and
including the earlier of August 16, 2002 or the most recent such quarterly date
on or before any early settlement of the related purchase contracts. In the case
of debentures that are components of Income PRIDES, the payments will be payable
through and including the most recent such quarterly date on or before the
earlier of August 16, 2004 or the date the principal amount of the debentures
together with all accrued and unpaid interest thereon is paid in full. All of
these payments are subject to the deferral provisions described in this
prospectus supplement.

WHAT IS REMARKETING?

     The debentures of Income PRIDES holders who have failed to notify The Bank
of New York, who is the purchase contract agent for the holders of the FELINE
PRIDES, on or prior to the fifth business day before August 16, 2002 of their
intention to pay cash in order to satisfy their obligations under the related
purchase contracts will be remarketed on the third business day immediately
preceding August 16, 2002. The remarketing agent, which is currently anticipated
to be Merrill Lynch, Pierce, Fenner & Smith Incorporated, will use its
reasonable efforts to remarket the debentures (bearing the reset rate) on such

                                       S-4
<PAGE>   7

date for settlement on August 16, 2002. The remarketing agent will use its best
efforts to obtain a price of approximately 100.5% of the aggregate principal
amount of such debentures, plus accrued and unpaid interest (including any
deferred interest), if any, thereon. The portion of the proceeds from the
remarketing equal to the total principal amount of the debentures will
automatically be applied to satisfy in full the Income PRIDES holders'
obligations to purchase common stock under the related purchase contracts. The
remarketing agent will deduct as a remarketing fee an amount not exceeding 25
basis points (.25%) of the aggregate principal amount of the remarketed
debentures from any amount of such proceeds in excess of the aggregate principal
amount of the remarketed debentures plus any accrued and unpaid interest
(including any deferred interest), if any, thereon. The remarketing agent will
remit the remaining portion of the proceeds, if any, for the benefit of such
holder.

WHAT HAPPENS IF THE REMARKETING AGENT DOES NOT SELL THE DEBENTURES?

     We will exercise our rights as a secured party to dispose of the debentures
in accordance with applicable law and to satisfy in full, from the proceeds of
such disposition, the holder's obligation to purchase common stock under the
related purchase contracts if

     - the remarketing agent cannot remarket the related debentures (other than
       to us) of the holders of Income PRIDES at a price equal to or greater
       than 100% of the total principal amount of the debentures plus accrued
       and unpaid interest, including deferred interest, if any, or

     - the remarketing has not occurred because a condition precedent to the
       remarketing has not been fulfilled.

IF I AM NOT A PARTY TO A PURCHASE CONTRACT, MAY I STILL PARTICIPATE IN A
REMARKETING OF MY DEBENTURES?

     Holders of debentures that are not components of Income PRIDES may elect,
in the manner described in this prospectus supplement, to have their debentures
remarketed by the remarketing agent.

BESIDES PARTICIPATING IN A REMARKETING, HOW ELSE MAY I SATISFY MY OBLIGATIONS
UNDER THE PURCHASE CONTRACTS?

     Holders of FELINE PRIDES may satisfy their obligations, or their
obligations will be terminated, under the purchase contracts

     - through early settlement by the early delivery of cash to the purchase
       contract agent in the manner described in this prospectus supplement;

     - by settling the related purchase contracts with cash on the business day
       prior to August 16, 2002 pursuant to prior notification to the purchase
       contract agent; or

     - without any further action, upon the termination of the purchase
       contracts as a result of our bankruptcy, insolvency or reorganization.

WHAT INTEREST PAYMENTS WILL I RECEIVE ON THE DEBENTURES?

     Interest payments on the debentures will be payable initially at the annual
rate of 6.625% of the principal amount of $25 per debenture to, but excluding,
August 16, 2002. If any debentures remain outstanding on and after August 16,
2002, interest payments on these debentures will be at the reset rate from
August 16, 2002 to, but excluding, August 16, 2004.

WHAT ARE THE PAYMENT DATES ON THE DEBENTURES?

     Interest payments will be payable quarterly in arrears on each February 16,
May 16, August 16 and November 16, commencing November 16, 1999.

WHAT IS THE RESET RATE?

     The reset rate will be the interest rate on the debentures that the reset
agent, currently anticipated to be Merrill Lynch, Pierce, Fenner & Smith
Incorporated, determines as the rate the debentures should bear
                                       S-5
<PAGE>   8

in order for a debenture to have an approximate market value of 100.5% of its
principal amount on the third business day immediately preceding August 16,
2002, except that

     - we may limit the reset rate to be no higher than the rate on the two-year
       benchmark Treasury plus 200 basis points (2%) and

     - the reset rate may not exceed the maximum rate permitted by applicable
       law.

WHEN WILL THE INTEREST RATE ON THE DEBENTURES BE RESET?

     Unless a tax event redemption has occurred, the interest rate on the
debentures will be reset on the third business day immediately preceding August
16, 2002.

WHEN MAY THE DEBENTURES BE REDEEMED?

     The debentures are redeemable at our option, in whole but not in part, upon
the occurrence and continuation of a tax event under the circumstances described
in this prospectus supplement (a "tax event redemption"). Following any
redemption of the debentures prior to August 16, 2002, investors that own Income
PRIDES will own a portfolio of U.S. Treasury securities (the "Treasury
portfolio") as a component of their Income PRIDES.

WHAT ARE THE FEDERAL INCOME TAX CONSEQUENCES RELATED TO THE INCOME PRIDES,
GROWTH PRIDES AND DEBENTURES?

     The debentures may be issued with original issue discount ("OID"), in which
case a beneficial owner of Income PRIDES or debentures will be required to
include in gross income such OID on a constant yield to maturity basis. In
addition, a beneficial owner of Income PRIDES or of debentures will include in
gross income the stated interest on the debentures when such interest income is
paid or accrued in accordance with its regular method of tax accounting. We
intend to report the contract adjustment payments as income to holders of Income
PRIDES and Growth PRIDES, but you should consult your tax advisors concerning
the possibility that the contract adjustment payments may be treated as loans,
purchase price adjustments, rebates or option premiums rather than being
includible in income on a current basis. A beneficial owner of Growth PRIDES
will be required to include in gross income any OID with respect to the Treasury
securities as it accrues on a constant yield to maturity basis. If a tax event
redemption has occurred, a beneficial owner of Income PRIDES will be required to
include in gross income its allocable share of OID on the Treasury portfolio as
it accrues on a constant yield to maturity basis.

WHAT ARE THE USES OF PROCEEDS FROM THE OFFERING?

     Substantially all of the proceeds from the sale of the Growth PRIDES will
be used to purchase the underlying Treasury securities to be transferred to
holders of the Growth PRIDES pursuant to the terms thereof and the remainder
will be paid to us. All of the proceeds from the sale of the debentures that are
not components of Income PRIDES and all of the proceeds from the sale of the
Income PRIDES will be paid to us. We currently anticipate using all of the net
proceeds from the sale of the debentures, the Income PRIDES and the Growth
PRIDES, estimated to be approximately $387.7 million (approximately $445.9
million if the underwriters' over-allotment options are exercised in full) (in
each case after deducting the underwriting commissions and estimated expenses
payable by us), to repay borrowings, including borrowings of our subsidiaries.

                                       S-6
<PAGE>   9

                      THE OFFERING -- EXPLANATORY DIAGRAMS

     The following diagrams demonstrate some of the key features of the purchase
contracts, Income PRIDES, Growth PRIDES and the debentures, and the
transformation of Income PRIDES into Growth PRIDES and debentures.

PURCHASE CONTRACT

     - Income PRIDES and Growth PRIDES both include a purchase contract under
       which the investor agrees to purchase shares of our common stock at the
       end of three years. In addition, with respect to the Growth PRIDES, these
       purchase contracts include unsecured contract adjustment payments shown
       in the diagrams on the following pages.
                                    [CHART]
- ---------------

(1) For each of the percentage categories shown, the percentage of shares to be
    delivered at maturity to an investor in an Income PRIDES or Growth PRIDES is
    determined by dividing (a) the related number of shares to be delivered, as
    indicated in the footnote for each such category, by (b) an amount equal to
    $25, the stated amount, divided by the reference price.

(2) If the applicable market value of our common stock is less than or equal to
    $38.0625, the number of shares to be delivered will be calculated by
    dividing the stated amount by the reference price. The "applicable market
    value" means the average of the closing price per share of common stock on
    each of the twenty consecutive trading days ending on the third trading day
    immediately preceding August 16, 2002.

(3) If the applicable market value of our common stock is between $38.0625 and
    $46.4363, the number of shares to be delivered will be calculated by
    dividing the stated amount by the applicable market value.

(4) If the applicable market value of our common stock is greater than $46.4363,
    the number of shares to be delivered will be calculated by dividing the
    stated amount by the threshold appreciation price.

(5) The "reference price" is $38.0625, which is the last reported sales price of
    the common stock on the NYSE on July 28, 1999.

(6) The "threshold appreciation price" is equal to $46.4363.

                                       S-7
<PAGE>   10

INCOME PRIDES

     - An Income PRIDES consists of two components as described below:
                                    [CHART]

     - The investor owns the debenture but will pledge it to us to secure its
       obligations under the purchase contract.

GROWTH PRIDES

     - A Growth PRIDES consists of two components as described below:
                                    [CHART]

     - The investor owns the Treasury security but will pledge it to us to
       secure its obligations under the purchase contract.

                                       S-8
<PAGE>   11

DEBENTURES

     - Debentures have the terms described below:
                                    [CHART]

     - The holder of a debenture that is a component of an Income PRIDES has an
       option at the end of year 3 to either:

      - Pay cash to settle the purchase contract for $25 and receive a debenture
        whose rate has been reset at the end of year 3, or

      - Pay cash to settle the purchase contract by allowing the debenture to be
        included in the remarketing process.

     - The holder of a debenture that is separate and not a component of an
       Income PRIDES has the option at the end of year 3 to either:

      - Continue to hold the debenture whose rate has been reset at the end of
        year 3, or

      - Deliver the debenture to The Chase Manhattan Bank, as our custodial
        agent, to be included in the remarketing process.

                                       S-9
<PAGE>   12

          TRANSFORMING INCOME PRIDES INTO GROWTH PRIDES AND DEBENTURES

     - To create a Growth PRIDES, the investor separates an Income PRIDES into
       its components -- the purchase contract and the debenture -- and then
       combines the purchase contract with a Treasury security that matures
       concurrently with the maturity of the purchase contract.

     - The investor owns the Treasury security but will pledge it to us to
       secure its obligations under the purchase contract.

     - The Treasury security together with the purchase contract constitute a
       Growth PRIDES. The debenture, which is no longer a component of the
       Income PRIDES, is tradeable as a separate security.
                                    [CHART]

     - The investor can also transform Growth PRIDES and debentures into Income
       PRIDES. Following that transformation, the Treasury security, which is no
       longer a component of the Growth PRIDES, is tradeable as a separate
       security.

     - The transformation of Income PRIDES into Growth PRIDES and debentures,
       and the transformation of Growth PRIDES and debentures into Income
       PRIDES, requires certain minimum amounts of securities, as more fully
       provided in this prospectus supplement.

                                      S-10
<PAGE>   13

                                  RISK FACTORS

     Your investment in the FELINE PRIDES will involve risks. You should
carefully consider the following discussion of risks as well as other
information contained in this prospectus supplement.

YOU ASSUME THE RISK THAT THE MARKET VALUE OF OUR COMMON STOCK MAY DECLINE

     Although as a holder of FELINE PRIDES you will be the beneficial owner of
the related debentures, Treasury portfolio or Treasury securities, as the case
may be, you do have an obligation pursuant to the purchase contract to buy our
common stock. Prior to August 16, 2002, unless you pay cash to satisfy your
obligation under the purchase contract or the purchase contracts are terminated
due to our bankruptcy, insolvency or reorganization, either the proceeds derived
from the remarketing of the debentures or the principal of the appropriate
applicable ownership interest (as defined herein) of the Treasury portfolio when
paid at maturity, in the case of Income PRIDES, or the principal of the related
Treasury securities when paid at maturity, in the case of Growth PRIDES, will
automatically be used to purchase a specified number of shares of our common
stock on your behalf. There can be no assurance that the market value of the
common stock received by you on August 16, 2002 will be equal to or greater than
the effective price per share of $38 1/16, paid by you for our common stock on
the date hereof. If the applicable market value of the common stock is less than
$38 1/16, the aggregate market value of the common stock issued to you pursuant
to each purchase contract on August 16, 2002 will be less than the effective
price per share paid by you for such common stock on the date hereof.
Accordingly, you assume the risk that the market value of the common stock may
decline, and that such decline could be substantial.

THE OPPORTUNITY FOR EQUITY APPRECIATION PROVIDED BY AN INVESTMENT IN THE FELINE
PRIDES IS LESS THAN THAT PROVIDED BY A DIRECT INVESTMENT IN OUR COMMON STOCK

     Your opportunity for equity appreciation afforded by investing in the
FELINE PRIDES is less than your opportunity for equity appreciation if you
directly invested in our common stock. This opportunity is less because the
market value of the common stock to be received by you pursuant to the purchase
contract on August 16, 2002 (assuming that such market value is the same as the
applicable market value of such common stock) will only exceed the effective
price per share of $38 1/16 paid by you for our common stock on the date hereof
if the applicable market value of the common stock exceeds the threshold
appreciation price (which represents an appreciation of approximately 22% over
$38 1/16). This situation occurs because in such event, you would receive on
August 16, 2002 only approximately 82% (the percentage equal to $38 1/16 divided
by the threshold appreciation price) of the shares of common stock that you
would have received if you had made a direct investment in the common stock on
the date hereof.

THE TRADING PRICES FOR THE FELINE PRIDES WILL BE DIRECTLY AFFECTED BY THE
TRADING PRICES FOR OUR COMMON STOCK

     The trading prices of Income PRIDES and Growth PRIDES in the secondary
market will be directly affected by the trading prices of our common stock, the
general level of interest rates and our credit quality. It is impossible to
predict whether the price of the common stock or interest rates will rise or
fall. Trading prices of the common stock will be influenced by our operating
results and prospects and by economic, financial and other factors. In addition,
general market conditions can affect the capital markets generally, therefore
affecting the price of our common stock, including the level of, and
fluctuations in, the trading prices of stocks generally and sales of substantial
amounts of common stock by us in the market after the offering of the FELINE
PRIDES, or the perception that such sales could occur. Fluctuations in interest
rates may give rise to arbitrage opportunities based upon changes in the
relative value of the common stock underlying the purchase contracts and of the
other components of the FELINE PRIDES. Any such arbitrage could, in turn, affect
the trading prices of the Income PRIDES, Growth PRIDES, debentures and common
stock.

                                      S-11
<PAGE>   14

IF YOU HOLD FELINE PRIDES, YOU WILL NOT BE ENTITLED TO ANY RIGHTS WITH RESPECT
TO THE COMMON STOCK

     If you hold FELINE PRIDES, you will not be entitled to any rights with
respect to the common stock (including, without limitation, voting rights and
rights to receive any dividends or other distributions on the common stock). You
will only be entitled to rights on the common stock if and when we deliver
shares of common stock in exchange for FELINE PRIDES on August 16, 2002, or as a
result of early settlement, as the case may be, and the applicable record date,
if any, for the exercise of rights occurs after such date. For example, in the
event that an amendment is proposed to our certificate of incorporation or
by-laws and the record date for determining the stockholders of record entitled
to vote on such amendment occurs prior to delivery, you will not be entitled to
vote on such amendment.

WE MAY ISSUE ADDITIONAL SHARES OF COMMON STOCK AND THEREBY MATERIALLY AND
ADVERSELY AFFECT THE PRICE OF OUR COMMON STOCK

     The number of shares of common stock that you are entitled to receive on
August 16, 2002, or as a result of early settlement of a purchase contract, is
subject to adjustment for certain events arising from stock splits and
combinations, stock dividends and certain other actions by us that modify our
capital structure. We will not adjust the number of shares of common stock that
you are to receive on August 16, 2002, or as a result of early settlement of a
purchase contract for other events, including offerings of common stock for cash
by us or in connection with acquisitions. We are not restricted from issuing
additional common stock during the term of the purchase contracts and have no
obligation to consider your interests for any reason. If we issue additional
shares of common stock, it may materially and adversely affect the price of our
common stock and, because of the relationship of the number of shares to be
received on August 16, 2002 to the price of the common stock, such other events
may adversely affect the trading price of Income PRIDES or Growth PRIDES.

THE SECONDARY MARKET FOR THE FELINE PRIDES MAY BE ILLIQUID

     It is not possible to predict how Income PRIDES, Growth PRIDES or
debentures will trade in the secondary market or whether such market will be
liquid or illiquid. There is currently no secondary market for either our Income
PRIDES or our Growth PRIDES. The Income PRIDES and the Growth PRIDES have been
approved for listing on the NYSE. If debentures are separately traded to a
sufficient extent that applicable exchange listing requirements are met, we will
try to list the debentures on the same exchange as the Income PRIDES and Growth
PRIDES. There can be no assurance as to the liquidity of any market that may
develop for the Income PRIDES, the Growth PRIDES or the debentures, your ability
to sell such securities or whether a trading market, if it develops, will
continue. In addition, in the event you were to substitute Treasury securities
for debentures or debentures for Treasury securities, thereby converting your
Growth PRIDES to Income PRIDES or your Income PRIDES to Growth PRIDES, as the
case may be, the liquidity of Income PRIDES or Growth PRIDES could be adversely
affected. There can be no assurance that the Income PRIDES or Growth PRIDES will
not be delisted from the NYSE or that trading in the Income PRIDES or Growth
PRIDES and debentures will not be suspended as a result of your election to
create Income PRIDES or Growth PRIDES by substituting collateral, which could
cause the number of Income PRIDES or Growth PRIDES to fall below the requirement
for listing securities on the NYSE that at least 1,000,000 Income PRIDES or
Growth PRIDES be outstanding at any time.

YOUR RIGHTS TO THE PLEDGED SECURITIES WILL BE SUBJECT TO OUR SECURITY INTEREST

     Although you will be the beneficial owner of the related debentures,
Treasury securities or Treasury portfolio (together, the "pledged securities"),
as applicable, those pledged securities will be pledged with The Chase Manhattan
Bank, as the collateral agent, to secure your obligations under the related
purchase contracts. Thus, your rights to the pledged securities will be subject
to our security interest. Additionally, notwithstanding the automatic
termination of the purchase contracts in the event that we become the subject of
a case under the Bankruptcy Code, the delivery of the pledged securities to you
may be delayed by the imposition of the automatic stay of Section 362 of the
Bankruptcy Code.
                                      S-12
<PAGE>   15

WE MAY REDEEM THE DEBENTURES UPON THE OCCURRENCE OF A TAX EVENT

     We have the option to redeem the debentures, on not less than 30 days or
more than 60 days' prior written notice, in whole but not in part, at any time
before August 16, 2002 if a tax event occurs and continues under the
circumstances described in this prospectus supplement (a "tax event
redemption"). If we exercise this option, we will redeem the debentures at the
redemption price plus accrued and unpaid interest (including any deferred
interest) if any. If we redeem the debentures, we will pay the redemption price
in cash to the holders of such debentures. If the tax event redemption occurs
before August 16, 2002, the redemption price payable to you as a holder of
Income PRIDES will be distributed to the collateral agent, who in turn will
apply an amount equal to the redemption price to purchase the Treasury portfolio
on your behalf, and will remit the remainder of the redemption amount of the
redemption price to the holder, and the Treasury portfolio will be substituted
for the debentures as collateral to secure your obligations under the purchase
contracts related to the Income PRIDES. If your debentures are not components of
Income PRIDES, you will receive redemption payments directly. There can be no
assurance as to the impact on the market prices for the Income PRIDES if we
substitute the Treasury portfolio as collateral in place of any debentures so
redeemed. A tax event redemption will be a taxable event to the holders of the
debentures.

WE MAY DEFER CURRENT PAYMENTS

     We have the option to defer the payment of contract adjustment payments on
the purchase contracts forming a part of the Growth PRIDES until August 16,
2002. However, deferred installments of contract adjustment payments will bear
additional contract adjustment payments at the rate of 6.625% per year
(compounding on each succeeding payment date) until we pay them to you. If the
purchase contracts are settled early (or terminated due to our bankruptcy,
insolvency or reorganization), the right to receive contract adjustment payments
and deferred contract adjustment payments, if any, will also terminate.

     If we defer the payment of contract adjustment payments on the purchase
contracts until August 16, 2002, you will receive a number of shares of common
stock equal to the total amount of deferred contract adjustment payments payable
to you divided by the applicable market value.

     We will also have the right under the indenture to defer payments of
interest on the debentures by extending the interest payment period at any time,
and from time to time, on the debentures. Our right to extend the interest
payment period on the debentures will be limited such that an extension period
may not extend beyond the stated maturity date of the debentures or end on other
than a payment date. During any extension period, we will not declare or pay
dividends on, make distributions with respect to, or redeem, purchase or
acquire, or make a liquidation payment with respect to, any of our capital stock
except in the following five situations:

     - to purchase or acquire our own capital stock in order to satisfy any
       obligations that we may have under any employee benefit plans or to
       satisfy any obligations that we may have pursuant to any contract or
       security outstanding on the date of such event requiring us to purchase
       our own capital stock;

     - as a result of a reclassification of our capital stock or the exchange or
       conversion of one class or series of our capital stock for another class
       or series of the our capital stock;

     - to purchase fractional interests in shares of our capital stock pursuant
       to the conversion or exchange provisions of our capital stock or the
       conversion or exchange of such security;

     - dividends or distributions in our capital stock (or rights to acquire our
       capital stock) or to repurchase or redeem our capital stock solely from
       the issuance or exchange of capital stock; or

     - to redeem or repurchase any rights outstanding under a shareholder rights
       plan or to declare a dividend of rights in the future.

                                      S-13
<PAGE>   16

     During any such extension period, we shall also not make any guarantee
payments with respect to the above. Before the termination of any extension
period, we may further extend the interest payment period; provided that we may
not extend any extension period beyond the stated maturity date of the
debentures or have any extension period end on other than a payment date. Upon
the termination of any extension period and the payment of all amounts then due,
we may commence a new extension period, subject to the above requirements.

     We do not currently intend to defer payments of stated interest on the
debentures and we currently believe that the likelihood of our doing so is
remote. Therefore, the debentures should not be considered to have been issued
with OID as a result of our right to defer payments of stated interest on the
debentures unless and until we actually exercise this deferral right. There is
no assurance that the IRS will agree with our position.

     Should we exercise our right to defer payments of interest by extending the
interest payment period, a U.S. holder (as defined herein) of debentures either
as a component of the Income PRIDES or separately would be required to include
the U.S. holder's share of the stated interest on the debentures in gross
income, as OID, on a daily economic accrual basis, regardless of the U.S.
holder's method of tax accounting. As a result, a U.S. holder of debentures
would recognize income for United States federal income tax purposes in advance
of the receipt of cash attributable to this income, and would not receive the
cash from us related to this income if the holder has disposed of the debentures
prior to the record date for the date on which distributions of these amounts
are made. In addition, as a result of our right to defer interest payments, the
market price of the debentures may be more volatile than the market price of
other securities that are not subject to deferral. Should we exercise this right
in the future, the market price of the debentures is likely to be adversely
affected. If you dispose of your debentures during an extension period,
therefore, you might not receive the same return on your investment as if you
had continued to hold your debentures.

THE UNITED STATES FEDERAL INCOME TAX CONSEQUENCES OF THE PURCHASE,
OWNERSHIP AND DISPOSITION OF THE FELINE PRIDES ARE UNCLEAR

     No statutory, judicial or administrative authority directly addresses the
treatment of the FELINE PRIDES or instruments similar to the FELINE PRIDES for
United States federal income tax purposes. As a result, the United States
federal income tax consequences of the purchase, ownership and disposition of
FELINE PRIDES are not entirely clear.

THE PURCHASE CONTRACT AGREEMENT WILL NOT BE QUALIFIED UNDER THE TRUST INDENTURE
ACT AND THE OBLIGATIONS OF THE PURCHASE CONTRACT AGENT ARE LIMITED

     The purchase contract agreement between us and the purchase contract agent
will not be qualified as an indenture under the Trust Indenture Act of 1939 and
the purchase contract agent will not be required to qualify as a trustee under
the Trust Indenture Act, although the debentures constituting a part of the
Income PRIDES will be issued pursuant to the indenture, which will be qualified
under the Trust Indenture Act. Accordingly, if you hold FELINE PRIDES, you will
not have the benefit of the protections of the Trust Indenture Act. The
protections generally afforded the holder of a security issued under an
indenture that has been qualified under the Trust Indenture Act include

     - disqualification of the indenture trustee for "conflicting interests," as
       defined under the Trust Indenture Act;

     - provisions preventing a trustee that is also a creditor of the issuer
       from improving its own credit position at the expense of the security
       holders immediately prior to or after a default under such indenture; and

     - the requirement that the indenture trustee deliver reports at least
       annually with respect to certain matters concerning the indenture trustee
       and the securities.

                                      S-14
<PAGE>   17

THE TRADING PRICE OF THE DEBENTURES MAY NOT FULLY REFLECT THE VALUE OF THEIR
ACCRUED BUT UNPAID INTEREST

     The debentures may trade at a price that does not fully reflect the value
of their accrued but unpaid interest. If you dispose of your debentures between
record dates for interest payments, you will be required to include accrued but
unpaid interest through the date of disposition in income as ordinary income
(i.e., interest or, possibly, OID), and to add this amount to your adjusted tax
basis in the debentures disposed of. To the extent the selling price is less
than your adjusted tax basis, you will recognize a loss.

                           FORWARD-LOOKING STATEMENTS

     This prospectus supplement and the accompanying prospectus include certain
forward-looking statements. The forward-looking statements reflect our
expectations, objectives and goals with respect to future events and financial
performance and are based on assumptions and estimates which we believe are
reasonable. However, actual results could differ materially from anticipated
results. Important factors which may affect the actual results include, but are
not limited to, commodity prices, political developments, market and economic
conditions, industry competition, the weather, changes in financial markets,
changing legislation and regulations, and the impact of the year 2000 issue. The
forward-looking statements contained in this prospectus supplement and the
accompanying prospectus are intended to qualify for the safe harbor provisions
of Section 27A of the Securities Act of 1933 and Section 21E of the Securities
Exchange Act of 1934.

                                      S-15
<PAGE>   18

                      SELECTED CONSOLIDATED FINANCIAL DATA

     The following selected consolidated financial data, other than the ratio of
earnings to fixed charges, is derived from our Consolidated Financial Statements
and Item 6 of our Annual Reports on Form 10-K for the fiscal years ended
December 31, 1995 through 1998, and our Quarterly Report on Form 10-Q for the
three months ended March 31, 1999, as adjusted for certain minor
reclassifications. The notes to Consolidated Financial Statements included in
those reports contain other information relating to this data.

<TABLE>
<CAPTION>
                                             THREE MONTHS
                                            ENDED MARCH 31,                        YEAR ENDED DECEMBER 31,
                                         ---------------------   -----------------------------------------------------------
                                           1999        1998        1998        1997       1996(1)        1995        1994
                                         ---------   ---------   ---------   ---------   ---------     ---------   ---------
                                                         (IN MILLIONS, EXCEPT PER SHARE AMOUNTS AND RATIOS)
<S>                                      <C>         <C>         <C>         <C>         <C>           <C>         <C>
Operating revenues(2)..................  $ 1,709.6   $ 1,956.5   $ 7,368.2   $ 9,730.1   $12,166.9(3)  $10,343.2   $10,072.4
Earnings from continuing operations
  before extraordinary items...........      134.5       124.8       482.9       398.7       508.0(3)      285.6       240.3
Net earnings...........................      134.5       122.9       444.4       301.5       402.6(3)      270.4       232.6
Basic earnings per share from
  continuing operations before
  extraordinary items(4)...............        .63         .57        2.24        1.80        2.33(3)       1.28        1.07
Diluted earnings per share from
  continuing operations before
  extraordinary items(4)...............        .62         .56        2.21        1.77        2.30(3)       1.27        1.06
Cash dividends per common share(4).....      .0625         .05       .2375         .20         .20           .20         .20
Ratio of earnings to fixed
  charges(5)...........................      2.75x       2.98x       2.62x       2.38x       2.59x         1.73x       1.76x
Total assets...........................  $12,644.6   $11,325.1   $12,304.1   $11,639.7   $11,620.4     $10,660.5   $10,501.8
Long-term debt, excluding current
  maturities...........................    4,212.6     3,759.2     3,999.3     3,663.2     3,526.1       3,661.7     3,719.0
Preferred stock of subsidiaries,
  excluding current maturities(6)......      400.0       100.0       400.0       100.0       100.0            .6          .6
Common stock and other stockholders'
  equity...............................    3,599.6     3,392.9     3,475.8     3,282.4     3,036.5       2,678.8     2,457.2
</TABLE>

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

(1) Effective November 1, 1996, we discontinued the application of Statement of
    Financial Accounting Standards No. 71, "Accounting for the Effects of
    Certain Types of Regulation." The accounting change resulted in a charge to
    earnings of $85.6 million, net of related income taxes of $50.0 million, and
    is shown as an extraordinary item. Additional information is set forth in
    Management's Discussion and Analysis of Financial Condition and Results of
    Operations and Note 14 of the Notes to Consolidated Financial Statements in
    the Form 10-K for the year ended December 31, 1998.

(2) Amounts for 1997 include revenues for two months while 1994 through 1996
    include twelve months of revenues from our gas marketing operations which
    became a part of Engage Energy US, L.P. and Engage Energy Canada, L.P. in
    February 1997 and are included in Other income -- net on the equity method
    thereafter.

(3) Amounts for 1996 included a gain of $272.3 million ($177.0 million net of
    income taxes, or $.84 per share-basic, $.83 per share-diluted) related to
    the sale of the Utah coal mining operations. Excluding the gain, earnings
    from continuing operations before extraordinary items for 1996 amounted to
    $331.0 million ($1.49 per share-basic, $1.47 per share-diluted).

(4) Adjusted for a two-for-one stock split of our common stock declared on May
    7, 1998. In addition, cash dividends of $.2138 per share were paid on our
    Class A Common Stock in 1998, and $.18 was paid in 1997, 1996, 1995 and
    1994. For the three month periods, the cash dividends on Class A Common
    Stock were $.05625 and $.045 in 1999 and 1998, respectively.

(5) For purposes of calculating the ratio of earnings to fixed charges,
    "earnings" are computed by adding to earnings from continuing operations the
    provision for income taxes and fixed charges net of interest capitalized.
    "Fixed charges" consist of interest plus interest capitalized, subsidiary
    preferred stock dividends and a portion of operating lease rent expense
    deemed to be representative of interest.

(6) Amounts for March 31, 1999 and December 31, 1998 include $300.0 million of
    Coastal-obligated mandatory redemption preferred securities of a
    consolidated trust.

                                      S-16
<PAGE>   19

                   PRICE RANGE OF COMMON STOCK AND DIVIDENDS

     Our common stock is traded on the NYSE under the symbol "CGP." The high and
low sales prices of our common stock, as reported on the NYSE composite tape,
for the periods indicated, are presented below:

<TABLE>
<CAPTION>
                                                                                DIVIDENDS
                                                               HIGH     LOW       PAID
                                                              ------   ------   ---------
<S>                                                           <C>      <C>      <C>
1997:
  First Quarter.............................................  $25.56   $22.32    $  .05
  Second Quarter............................................   26.94    21.94       .05
  Third Quarter.............................................   31.75    26.38       .05
  Fourth Quarter............................................   32.53    28.13       .05
1998:
  First Quarter.............................................  $34.13   $26.59    $  .05
  Second Quarter............................................   38.25    32.34     .0625
  Third Quarter.............................................   35.75    25.25     .0625
  Fourth Quarter............................................   38.75    30.88     .0625
1999:
  First Quarter.............................................  $37.38   $29.44    $.0625
  Second Quarter............................................   43.88    32.75     .0625
  Third Quarter (through July 28, 1999).....................   42.00    37.88        --
</TABLE>

     We have paid quarterly cash dividends on our common stock in each year
since 1977. Price and dividend amounts set forth above have been adjusted for a
2-for-1 stock split in 1998.

                                USE OF PROCEEDS

     Substantially all of the proceeds from the sale of the Growth PRIDES will
be used to purchase the underlying Treasury securities to be transferred to
holders of the Growth PRIDES pursuant to the terms thereof and the remainder
will be paid to us. All of the proceeds from the sale of the debentures that are
not components of Income PRIDES and all of the proceeds from the sale of the
Income PRIDES will be paid to us. We currently anticipate using all of the net
proceeds from the sale of the debentures, the Income PRIDES and the Growth
PRIDES, estimated to be approximately $387.7 million (approximately $445.9
million if the underwriters' over-allotment options are exercised in full) (in
each case after deducting the underwriting commission and estimated expenses
payable by us), to repay borrowings, including borrowings of our subsidiaries.

                                      S-17
<PAGE>   20

                                 CAPITALIZATION

     The following table sets forth our unaudited consolidated short-term debt
and capitalization as of March 31, 1999, and as adjusted to give effect to the
sale of the FELINE PRIDES and the debentures and the application of the net
proceeds from the sale thereof. See "Use of Proceeds."

<TABLE>
<CAPTION>
                                                                 MARCH 31, 1999(2)
                                                              -----------------------
                                                               ACTUAL     AS ADJUSTED
                                                              ---------   -----------
                                                                   (IN MILLIONS)
<S>                                                           <C>         <C>
Short-term debt and current maturities on long-term
  debt(1)...................................................  $   268.4    $   268.4
                                                              =========    =========
Long-term debt:
  The Coastal Corporation:
     Notes payable (revolving credit agreements)(1).........  $    90.0    $      --
     6 5/8% senior debentures, due 2004.....................         --        400.0
     Other..................................................    2,099.1      2,099.1
                                                              ---------    ---------
                                                                2,189.1      2,499.1
                                                              ---------    ---------
  Subsidiary companies:
     Notes payable (revolving credit agreements)(1).........      560.7        263.0
     Other..................................................    1,140.2      1,140.2
                                                              ---------    ---------
                                                                1,700.9      1,403.2
Amount reclassified from short-term debt(1).................      450.0        450.0
Less current maturities(1)..................................      127.4        127.4
                                                              ---------    ---------
          Total long-term debt..............................    4,212.6      4,224.9
                                                              ---------    ---------
Preferred securities:
  Company-obligated mandatory redemption preferred
     securities of a consolidated trust.....................      300.0        300.0
  Issued by subsidiaries....................................      100.0        100.0
                                                              ---------    ---------
          Total preferred securities........................      400.0        400.0
Common stock and other stockholders' equity.................    3,599.6      3,599.6
                                                              ---------    ---------
          Total capitalization..............................  $ 8,212.2    $ 8,224.5
                                                              =========    =========
</TABLE>

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

(1) At March 31, 1999, we had $591.0 million of outstanding indebtedness to
    banks under short-term lines of credit and $277.4 million of current
    maturities on long-term debt. As of such date our financial statements
    reflect $450.0 million of short-term borrowings and $150.0 million of
    current maturities on long-term debt which have been reclassified as
    long-term, based on the availability of committed credit lines with
    maturities in excess of one year and our intent to maintain such amounts as
    long-term borrowings.

(2) At June 30, 1999, total debt had increased by $165.7 million.

                                      S-18
<PAGE>   21

                              ACCOUNTING TREATMENT

     The purchase contracts are forward transactions in our common stock. Upon
settlement of a purchase contract, we will receive the stated amount on such
purchase contract and will issue the requisite number of shares of common stock.
The stated amount thus received will be credited to the common stock and
additional paid-in capital account in common stock and other stockholders'
equity. The fair market value of the purchase contracts will be credited to
additional paid-in capital. The present value of the contract adjustment
payments will initially be charged to equity, with an offsetting credit to
liabilities. Subsequent contract adjustment payments will be allocated between
this liability account and interest expense based on a constant rate calculation
over the life of the transaction.

     Prior to the issuance of shares of common stock upon settlement of the
purchase contracts, it is anticipated that the FELINE PRIDES will be reflected
in our earnings per share calculations using the treasury stock method. Under
this method, the number of shares of common stock used in calculating earnings
per share is deemed to be increased by the excess, if any, of the number of
shares issuable upon settlement of the purchase contracts over the number of
shares that could be purchased by us in the market (at the average market price
during the period) using the proceeds receivable upon settlement. Consequently,
it is anticipated there will be no dilutive effect on our earnings per share
except during periods when the average market price of common stock is above the
threshold appreciation price.

                                      S-19
<PAGE>   22

                        DESCRIPTION OF THE FELINE PRIDES

     Each FELINE PRIDES will be issued under the purchase contract agreement
between us and the purchase contract agent. The FELINE PRIDES initially will
consist of (1) 14,600,000 units referred to as Income PRIDES with a stated
amount per Income PRIDES equal to $25 and (2) 1,400,000 units referred to as
Growth PRIDES with a stated amount per Growth PRIDES equal to $25.

     Each Income PRIDES will initially consist of a unit comprised of:

          (1) a purchase contract under which the holder will purchase from us
     not later than August 16, 2002, for the stated amount, a fraction of a
     newly issued share of our common stock equal to the settlement rate
     described below under "Description of the Purchase Contracts -- General."

          (2) (a) a beneficial ownership interest in a related debenture, having
     a principal amount per debenture equal to the stated amount, or (b) upon
     the occurrence of a tax event redemption prior to August 16, 2002, the
     appropriate applicable ownership interest in the Treasury portfolio.

     "Applicable ownership interest" means, with respect to an Income PRIDES and
the U.S. Treasury securities in the Treasury portfolio, (1) a 1/40, or 2.5%,
undivided beneficial ownership interest in a $1,000 principal or interest amount
of a principal or interest strip in a U.S. Treasury security included in the
Treasury portfolio which matures on or prior to August 15, 2002 and (2) for each
scheduled interest payment date on the debentures that occurs after the tax
event redemption date, a .0414% undivided beneficial ownership interest in a
$1,000 face amount of the U.S. Treasury security which is a principal or
interest strip maturing on or prior to such interest payment date.

     Each Growth PRIDES will initially consist of a unit comprised of:

          (1) a purchase contract under which (a) the holder will purchase from
     us not later than August 16, 2002, for the stated amount, a number of newly
     issued shares of our common stock equal to the settlement rate, and (b) we
     will pay to the holder contract adjustment payments at the rate of .25% of
     the stated amount per year, and

          (2) a 2.5% undivided beneficial ownership interest in a zero-coupon
     Treasury security (CUSIP No. 912820 BE 6) with a principal amount of $1,000
     that matures on August 15, 2002, which is referred to herein as a Treasury
     security.

     The purchase price of each FELINE PRIDES will be allocated between the
related purchase contract and the related debenture or interest in a Treasury
security in proportion to their respective fair market values at the time of
purchase. We will report the fair market of each debenture and each interest in
a Treasury security as $24.647 and $21.157, respectively, and the fair market
value of each purchase contract as $.353. This position generally will be
binding on each beneficial owner of each Income PRIDES, but not on the IRS. The
debentures or the appropriate applicable ownership interest of the Treasury
portfolio or the Treasury securities, as applicable, forming a part of the
Income PRIDES or Growth PRIDES will be pledged to the collateral agent to secure
the holder's obligation to purchase common stock under the related purchase
contracts.

CREATING GROWTH PRIDES

     Each holder of Income PRIDES, unless a tax event redemption has occurred,
will have the right, at any time on or prior to the fifth business day
immediately preceding August 16, 2002, to substitute for the related debentures
Treasury securities in a total principal amount at maturity equal to the
aggregate principal amount of such debentures. This substitution will create
Growth PRIDES. Because Treasury securities are issued in multiples of $1,000,
holders of Income PRIDES may make such substitution only in integral multiples
of 40 Income PRIDES. However, if a tax event redemption has occurred prior to
August 16, 2002 and the Treasury portfolio has become a component of the Income
PRIDES, holders of Income PRIDES may make substitutions only in multiples of
3,200,000 Income PRIDES, at any time on or prior to the second business day
immediately preceding August 16, 2002. Holders must also obtain the
                                      S-20
<PAGE>   23

release of the appropriate applicable ownership interest in the Treasury
portfolio rather than a release of the applicable debentures.

     To create 40 Growth PRIDES, the Income PRIDES holder will:

          (a) deposit with the collateral agent a Treasury security having a
     principal amount at maturity of $1,000 and

          (b) transfer 40 Income PRIDES to the purchase contract agent
     accompanied by a notice stating that the holder has deposited a Treasury
     security with the collateral agent and requesting the release to such
     holder of the 40 debentures relating to the 40 Income PRIDES.

     Holders will also be required to deliver cash in an amount equal to the
amount of the contract adjustment payments that would have accrued since the
last payment date of contract adjustment payments to the date of substitution on
the Growth PRIDES being created.

     Upon the deposit and receipt of an instruction from the purchase contract
agent, the collateral agent will release the related 40 debentures from the
pledge under the pledge agreement free and clear of our security interest
therein to the purchase contract agent, which will (i) cancel the 40 Income
PRIDES, (ii) transfer the 40 related debentures to the holder and (iii) deliver
40 Growth PRIDES to the holder. The Treasury security will be substituted for
the debentures and will be pledged with the collateral agent to secure the
holder's obligation to purchase common stock under the related purchase
contracts. The related debentures released to the holder thereafter will trade
separately from the resulting Growth PRIDES.

     Contract adjustment payments will be payable by us on the Growth PRIDES on
each payment date from the later of August 3, 1999, the original issue date, and
the last payment date on which contract adjustment payments were paid. In
addition, OID will accrue on the related Treasury securities.

CREATING INCOME PRIDES

     Each holder of Growth PRIDES will have the right, at any time on or prior
to the fifth business day immediately preceding August 16, 2002, to substitute
for the related Treasury securities held by the collateral agent debentures in
an aggregate principal amount equal to the aggregate principal amount at stated
maturity of the Treasury securities. This substitution would create Income
PRIDES. Because Treasury securities are issued in integral multiples of $1,000,
holders of Growth PRIDES may make these substitutions only in integral multiples
of 40 Growth PRIDES. If a tax event redemption has occurred and the Treasury
portfolio has become a component of the Income PRIDES, holders of the Growth
PRIDES may make such substitution only in integral multiples of 3,200,000 Growth
PRIDES at any time on or prior to the second business day immediately preceding
August 16, 2002.

     To create 40 Income PRIDES, the Growth PRIDES holder will:

          (a) deposit with the collateral agent 40 debentures, which debentures
     must be purchased in the open market at the holder's expense, and

          (b) transfer 40 Growth PRIDES certificates to the purchase contract
     agent accompanied by a notice stating that the Growth PRIDES holder has
     deposited 40 debentures with the collateral agent and requesting that the
     purchase contract agent instruct the collateral agent to release the
     Treasury security relating to the Growth PRIDES.

     Upon the deposit and receipt of an instruction from the purchase contract
agent, the collateral agent will release the related Treasury securities from
the pledge under the pledge agreement free and clear of our security interest
therein to the purchase contract agent. The purchase contract agent will then
(i) cancel the 40 Growth PRIDES, (ii) transfer the related Treasury securities
to the holder of Growth PRIDES and (iii) deliver 40 Income PRIDES to the holder
of Growth PRIDES. The substituted

                                      S-21
<PAGE>   24

debentures will be pledged with the collateral agent to secure the Income PRIDES
holder's obligation to purchase common stock under the related purchase
contracts.

     Cash distributions, payable quarterly at a rate of 6.625% of the stated
amount per year, subject to our deferral rights, on our Income PRIDES, will be
payable on our payment date from the later of the original issue date and the
last payment date on which the cash distributions, if any, were paid.

     Holders that elect to substitute pledged securities, thereby creating
Growth PRIDES or Income PRIDES or recreating Income PRIDES or Growth PRIDES,
will be responsible for any fees or expenses payable in connection with such
substitution.

CURRENT PAYMENTS

     Holders of Income PRIDES are entitled to receive aggregate cash
distributions at a rate of 6.625% of the stated amount per year from and after
the original issue date payable quarterly in arrears. The quarterly payments on
the Income PRIDES will consist of cash distributions on the related debentures
or the Treasury portfolio, as applicable, payable at the rate of 6.625% of the
stated amount per year subject to our right of deferral.

     Each holder of Growth PRIDES will be entitled to receive quarterly contract
adjustment payments payable by us at the rate of .25% of the stated amount per
year, subject to our rights of deferral. In addition, OID will accrue on the
related Treasury securities.

     We have the right at any time, and from time to time, limited to a period
not extending beyond the maturity of the debentures, to defer interest payments
on the debentures. As a consequence of this deferral, the interest payments to
holders of Income PRIDES or any debentures outstanding after August 16, 2002 or
after a substitution of collateral resulting in the creation of Growth PRIDES
would be deferred. However, despite such deferral, interest payments would
continue to accrue, compounded quarterly, at the rate of 6.625% per year through
and including August 15, 2002 and at the reset rate thereafter. We also have the
right to defer the payment of contract adjustment payments on the related
purchase contracts forming a part of the Growth PRIDES until no later than
August 16, 2002. Such deferred contract adjustment payments will bear additional
contract adjustment payments at the rate of 6.625% per year until paid. If a tax
event redemption has occurred and the Treasury portfolio has become a component
of the Income PRIDES, quarterly distributions on the Treasury portfolio, as a
portion of the cumulative quarterly distributions to the holders of Income
PRIDES, will not be deferred.

     Our obligations with respect to the debentures will be senior and unsecured
and will rank on an equal basis in right of payment with all of our other senior
unsecured obligations. Our obligations with respect to the contract adjustment
payments will be subordinated and junior in right of payment to our senior
indebtedness. "Senior indebtedness" with respect to the contract adjustment
payments means indebtedness of any kind unless the instrument under which such
indebtedness is incurred expressly provides that it is on a parity in right of
payment with or subordinate in right of payment to the contract adjustment
payments.

VOTING AND CERTAIN OTHER RIGHTS

     Holders of purchase contracts forming part of the Income PRIDES or Growth
PRIDES, in their capacities as such holders, will have no voting or other rights
in respect of the common stock.

LISTING OF THE SECURITIES

     The Income PRIDES and the Growth PRIDES have been approved for listing on
the NYSE under the symbols "CGPPrI" and "CGPPrG," respectively. Unless and until
substitution has been made as described in "Description of the FELINE
PRIDES -- Creating Growth PRIDES" or "-- Creating Income PRIDES," neither the
debenture or Treasury portfolio component of an Income PRIDES nor the Treasury
security component of a Growth PRIDES will trade separately from Income PRIDES
or Growth PRIDES, and the debenture or Treasury portfolio component will trade
as a unit with the purchase
                                      S-22
<PAGE>   25

contract component of the Income PRIDES and the Treasury security component will
trade as a unit with the purchase contract component of the Growth PRIDES. If
debentures are separately traded to a sufficient extent that the applicable
exchange listing requirements are met, we will endeavor to cause the debentures
to be listed on the exchange on which the Income PRIDES and the Growth PRIDES
are then listed, including, if applicable, the NYSE.

MISCELLANEOUS

     We or our affiliates may from time to time purchase any of the securities
offered by this prospectus supplement which are then outstanding by tender, in
the open market or by private agreement.

                                      S-23
<PAGE>   26

                     DESCRIPTION OF THE PURCHASE CONTRACTS

GENERAL

     Each purchase contract underlying a FELINE PRIDES will obligate the holder
of the purchase contract to purchase, and us to sell, on August 16, 2002, for an
amount in cash equal to the stated amount of the FELINE PRIDES, a number of
newly issued shares of common stock equal to the "settlement rate." The
settlement rate will be calculated, subject to adjustment under the
circumstances described in "-- Anti-Dilution Adjustments," as follows:

          (a) if the applicable market value is equal to or greater than the
     threshold appreciation price of $46.436, which is approximately 22% above
     the reference price, the settlement rate will be .5384, which is equal to
     the stated amount divided by the threshold appreciation price. Accordingly,
     if, between the date of this prospectus supplement and the period during
     which the applicable market value is measured, the market price for the
     common stock increases to an amount that is higher than the threshold
     appreciation price, the aggregate market value of the shares of common
     stock issued upon settlement of each purchase contract will be higher than
     the stated amount, assuming that the market value is the same as the
     applicable market value of such common stock. If the market price is the
     same as the threshold appreciation price, the aggregate market value of the
     shares will be equal to the stated amount, assuming that such market value
     is the same as the applicable market value of such common stock;

          (b) if the applicable market value is less than the threshold
     appreciation price but greater than the reference price, the settlement
     rate will be equal to the stated amount divided by the applicable market
     value. Accordingly, if the market price for the common stock increases
     between the date of this prospectus supplement and the period during which
     the applicable market value is measured, but such market price is less than
     the threshold appreciation price, the aggregate market value of the shares
     of common stock issued upon settlement of each purchase contract will be
     equal to the stated amount, assuming that such market value is the same as
     the applicable market value of such common stock; and

          (c) if the applicable market value is less than or equal to the
     reference price, the settlement rate, which is equal to the stated amount
     divided by the reference price, will be .6568. Accordingly, if the market
     price for the common stock decreases between the date of this prospectus
     supplement and the period during which the applicable market value is
     measured, the aggregate market value of the shares of common stock issued
     upon settlement of each purchase contract will be less than the stated
     amount, assuming that the market value is the same as the applicable market
     value of the common stock. If such market price stays the same, the
     aggregate market value of the shares will be equal to the stated amount,
     assuming that such market value is the same as the applicable market value
     of the common stock.

     "Applicable market value" means the average of the closing price per share
of common stock on each of the twenty consecutive trading days ending on the
third trading day immediately preceding August 16, 2002.

     "Closing price" of the common stock on any date of determination means the
closing sale price (or, if no closing price is reported, the last reported sale
price) of the common stock on the NYSE on such date or, if the common stock is
not listed for trading on the NYSE on any such date, as reported in the
composite transactions for the principal United States securities exchange on
which the common stock is so listed. If the common stock is not so listed on a
United States national or regional securities exchange, the closing price means
the last closing sale price of the common stock as reported by the Nasdaq Stock
Market, or, if the common stock is not so reported, the last quoted bid price
for the common stock in the over-the-counter market as reported by the National
Quotation Bureau or similar organization. If the bid price is not available, the
closing price means the market value of the common stock on such date as

                                      S-24
<PAGE>   27

determined by a nationally recognized independent investment banking firm
retained by us for this purpose.

     A "trading day" means a day on which the common stock (a) is not suspended
from trading on any national or regional securities exchange or association or
over-the-counter market at the close of business and (b) has traded at least
once on the national or regional securities exchange or association or over-the-
counter market that is the primary market for the trading of the common stock.

     We will not issue any fractional shares of common stock pursuant to the
purchase contracts. In lieu of fractional shares otherwise issuable (calculated
on an aggregate basis) in respect of purchase contracts being settled by a
holder of Income PRIDES or Growth PRIDES, the holder will be entitled to receive
an amount of cash equal to the fraction of a share times the applicable market
value.

     On the business day immediately preceding August 16, 2002, unless a holder
of Income PRIDES or Growth PRIDES:

          (1) has settled the related purchase contracts prior to August 16,
     2002 through the early delivery of cash to the purchase contract agent in
     the manner described under "-- Early Settlement,"

          (2) in the case of Income PRIDES, has settled the related purchase
     contracts with separate cash on the business day immediately preceding
     August 16, 2002 pursuant to prior notice in the manner described under
     "-- Notice to Settle with Cash,"

          (3) in the case of Income PRIDES, has had the debentures related to
     the holder's purchase contracts remarketed in the manner described herein
     in connection with settling such purchase contracts, or

          (4) an event described under "-- Termination" below has occurred,

then (a) in the case of Income PRIDES, unless a tax event redemption has
occurred, we will exercise our rights as a secured party to dispose of the
debentures in accordance with applicable law and (b) in the case of Growth
PRIDES, or Income PRIDES in the event that a tax event redemption has occurred,
the principal amount of the related Treasury securities, or the appropriate
applicable ownership interest of the Treasury portfolio, as applicable, when
paid at maturity, will automatically be applied to satisfy in full the holder's
obligation to purchase common stock under the related purchase contracts. The
common stock will then be issued and delivered to the holder or the holder's
designee, upon presentation and surrender of the certificate evidencing the
FELINE PRIDES and payment by the holder of any transfer or similar taxes payable
in connection with the issuance of the common stock to any person other than the
holder.

     Each holder of Income PRIDES or Growth PRIDES, by acceptance of such
securities, will be deemed to have:

          (1) irrevocably agreed to be bound by the terms and provisions of the
     related purchase contracts and the pledge agreement and to have agreed to
     perform its obligations thereunder for so long as such holder remains a
     holder of the FELINE PRIDES, and

          (2) duly appointed the purchase contract agent as the holder's
     attorney-in-fact to enter into and perform the related purchase contracts
     and pledge agreement on behalf of and in the name of the holder.

     In addition, each beneficial owner of Income PRIDES or Growth PRIDES, by
acceptance of this interest, will be deemed to have agreed to treat (a) itself
as the owner of the related debentures, the appropriate applicable ownership
interest of the Treasury portfolio or the Treasury securities, as the case may
be, and (b) the debentures as indebtedness for all United States federal tax
purposes.

                                      S-25
<PAGE>   28

REMARKETING

     Pursuant to the remarketing agreement and subject to the terms of the
supplemental remarketing agreement between the remarketing agent, the purchase
contract agent and us, unless a tax event redemption has occurred, the
debentures of Income PRIDES holders who have failed to notify the purchase
contract agent on or prior to the fifth business day immediately preceding
August 16, 2002 of their intention to settle the related purchase contracts with
separate cash will be remarketed on the third business day immediately preceding
August 16, 2002.

     The remarketing agent will use its reasonable efforts to remarket these
debentures at a price of approximately 100.5% of the aggregate principal amount
plus any accrued and unpaid interest payment including deferred interest
payments, if any. The portion of the proceeds from the remarketing equal to the
aggregate principal amount of the debentures will be automatically applied to
satisfy in full such Income PRIDES holders' obligations to purchase common
stock.

     In addition, the remarketing agent may deduct, as a remarketing fee, an
amount not exceeding 25 basis points (.25%) of the aggregate principal amount of
the remarketed debentures, from any amount of the proceeds in excess of the
aggregate principal amount of the remarketed debentures plus any accrued and
unpaid interest payments, including any deferred interest payments. The
remarketing agent will then remit any remaining portion of the proceeds for the
benefit of such holder. Income PRIDES holders whose debentures are remarketed
will not otherwise be responsible for the payment of any remarketing fee in
connection with the remarketing.

     If, (1) despite using its reasonable efforts, the remarketing agent cannot
remarket the related debentures, other than to us, at a price equal to or
greater than 100% of the aggregate principal amount of the debentures plus any
accrued and unpaid interest payments, including any deferred interest payments,
or (2) the remarketing has not occurred because a condition precedent to the
remarketing has not been fulfilled, in each case resulting in a failed
remarketing, we will exercise our rights as a secured party to dispose of the
debentures in accordance with applicable law and satisfy in full the holder's
obligation to purchase common stock under the related purchase contracts.
However, if we exercise our rights as a secured creditor, we will pay any
accrued and unpaid interest, including any deferred interest payments, on the
debentures in cash to the holders of record of the debentures.

     We will cause a notice of a failed remarketing to be published on the
second business day immediately preceding August 16, 2002 by publication in a
daily newspaper in the English language of general circulation in The City of
New York, which is expected to be The Wall Street Journal. In addition, we will
request, not later than seven nor more than 15 calendar days prior to the
remarketing date, that the depositary notify its participants holding
debentures, Income PRIDES and Growth PRIDES of the remarketing, including, in
the case of a failed remarketing, the procedures that must be followed if a
debenture holder wishes to exercise its right to put its debenture to us as
described in this prospectus supplement. If required, we will endeavor to ensure
that a registration statement with regard to the full amount of the debentures
to be remarketed shall be effective in such form as will enable the remarketing
agent to rely on it in connection with the remarketing process. It is currently
anticipated that Merrill Lynch, Pierce, Fenner & Smith Incorporated will be the
remarketing agent.

EARLY SETTLEMENT

     A holder of Income PRIDES may settle the related purchase contracts at any
time on or prior to the fifth business day immediately preceding August 16, 2002
by presenting and surrendering the related FELINE PRIDES certificate at the
offices of the purchase contract agent with the form of "Election to Settle
Early" on the reverse side of such certificate completed and executed as
indicated, accompanied by payment to us in immediately available funds of an
amount equal to the stated amount times the number of purchase contracts being
settled, but only in integral multiples of 40 Income PRIDES; provided, however,
if a tax event redemption has occurred prior to August 16, 2002 and the Treasury
portfolio has become a component of the Income PRIDES, holders of the Income
PRIDES may settle early only in integral multiples of 3,200,000 Income PRIDES at
any time on or prior to the second business day immediately preceding August 16,
2002.
                                      S-26
<PAGE>   29

     A holder of Growth PRIDES may settle the related purchase contracts at any
time on or prior to the second business day immediately preceding August 16,
2002 by presenting and surrendering the related FELINE PRIDES certificate at the
offices of the purchase contract agent with the form of "Election to Settle
Early" on the reverse side of such certificate completed and executed as
indicated, accompanied by payment in immediately available funds of an amount
equal to (1) the stated amount times the number of purchase contracts being
settled plus (2) if the delivery is made with respect to any purchase contract
during the period from the close of business on any record date next preceding
any payment date to the opening of business on such payment date, an amount
equal to the contract adjustment payments payable on the payment date with
respect to the purchase contract; provided that no payment is required if we
have elected to defer the contract adjustment payments which would otherwise be
payable on the payment date.

     So long as the FELINE PRIDES are evidenced by one or more global security
certificates deposited with the depositary, procedures for early settlement will
also be governed by standing arrangements between the depositary and the
purchase contract agent.

     Upon early settlement of the purchase contracts related to any Income
PRIDES or Growth PRIDES:

          (a) the holder will receive .5384 newly issued shares of common stock
     per Income PRIDES or Growth PRIDES, subject to adjustment under the
     circumstances described in "Description of the Purchase
     Contracts -- Anti-Dilution Adjustments" below, accompanied by this
     prospectus supplement, as amended or stickered,

          (b) the debentures, the appropriate applicable ownership interest of
     the Treasury portfolio or the Treasury securities, as the case may be,
     related to such Income PRIDES or Growth PRIDES will be transferred to the
     holder free and clear of our security interest,

          (c) the holder's right to receive any deferred contract adjustment
     payments on the purchase contracts being settled will be forfeited,

          (d) the holder's right to receive future contract adjustment payments
     will terminate, and

          (e) no adjustment will be made to or for the holder on account of any
     deferred contract adjustment payments or any amounts accrued in respect of
     contract adjustment payments.

     If the purchase contract agent receives a FELINE PRIDES Certificate,
accompanied by the completed "Election to Settle Early" and required immediately
available funds, from a holder of FELINE PRIDES by 5:00 p.m., New York City
time, on a business day, that day will be considered the settlement date. If the
purchase contract agent receives the above after 5:00 p.m., New York City time,
on a business day or at any time on a day that is not a business day, other than
from Income PRIDES holders after the occurrence of a tax event redemption, the
next business day will be considered the settlement date.

     Upon early settlement of purchase contracts in the manner described above,
presentation and surrender of the FELINE PRIDES certificate evidencing the
related Income PRIDES or Growth PRIDES and payment of any transfer or similar
taxes payable by the holder in connection with the issuance of the related
common stock to any person other than the holder of the Income PRIDES or Growth
PRIDES, we will cause the shares of common stock being purchased to be issued,
and the related debentures, the appropriate applicable ownership interest of the
Treasury portfolio or the Treasury securities, as the case may be, securing the
purchase contracts to be released from the pledge under the pledge agreement
described in "-- Pledged Securities and Pledge Agreement" and transferred,
within three business days following the settlement date, to the purchasing
holder or the holder's designee.

NOTICE TO SETTLE WITH CASH

     A holder of an Income PRIDES wishing to settle the related purchase
contract with separate cash on the business day immediately preceding August 16,
2002 must notify the purchase contract agent by presenting and surrendering the
Income PRIDES certificate evidencing the Income PRIDES at the offices of the
purchase contract agent with the form of "Notice to Settle by Separate Cash" on
the reverse side of
                                      S-27
<PAGE>   30

the certificate completed and executed as indicated on or prior to 5:00 p.m.,
New York City time, on the second business day immediately preceding August 16,
2002 (if a tax event redemption has occurred) or on the fifth business day
immediately preceding August 16, 2002 (if a tax event redemption has not
occurred). If a holder that has given notice of its intention to settle the
related purchase contract with separate cash fails to deliver the cash to the
collateral agent on the business day immediately preceding August 16, 2002, we
will exercise our right as a secured party to dispose of, in accordance with
applicable law, the related debenture to satisfy in full, from the disposition
of the debenture, the holder's obligation to purchase common stock under the
related purchase contracts.

CONTRACT ADJUSTMENT PAYMENTS

     Contract adjustment payments will be fixed at a rate per year of .25% of
the stated amount per purchase contract in the case of Growth PRIDES. Contract
adjustment payments that are not paid when due (after giving effect to any
permitted deferral) will bear interest at the rate per year of 6.625%,
compounded quarterly, until paid. Contract adjustment payments payable for any
period will be computed on the basis of a 360-day year of twelve 30-day months.
Contract adjustment payments will accrue from the original issue date and will
be payable quarterly in arrears on February 16, May 16, August 16 and November
16 of each year, commencing November 16, 1999.

     Contract adjustment payments will be payable to the holders of purchase
contracts as they appear on the books and records of the purchase contract agent
on the relevant record dates, which will be on the first day of the month in
which the relevant payment date falls. These distributions will be paid through
the purchase contract agent, who will hold amounts received in respect of the
contract adjustment payments for the benefit of the holders of the purchase
contracts relating to the Growth PRIDES. Subject to any applicable laws and
regulations, each such payment will be made as described under "-- Book-Entry
System."

     In the event that any date on which contract adjustment payments are to be
made on the purchase contracts related to Growth PRIDES is not a business day,
then payment of the contract adjustment payments will be made on the next
succeeding day which is a business day (and without any interest or other
payment in respect of this delay), except that, if this business day is in the
next succeeding calendar year, the payment will be made on the immediately
preceding business day, in each case with the same force and effect as if made
on the relevant payment date.

     A "business day" shall mean any day other than Saturday, Sunday or any
other day on which banking institutions in New York City (in the State of New
York) are permitted or required by any applicable law to close.

     Our obligations with respect to contract adjustment payments will be
subordinated and junior in right of payment to our obligations under any senior
indebtedness.

OPTION TO DEFER CONTRACT ADJUSTMENT PAYMENTS

     We may, at our option and upon prior written notice to the holders of the
FELINE PRIDES and the purchase contract agent, defer the payment of contract
adjustment payments on the related purchase contracts forming a part of the
Growth PRIDES until no later than August 16, 2002. However, deferred contract
adjustment payments will bear additional contract adjustment payments at the
rate of 6.625% per year (compounding on each succeeding payment date) until
paid. If the purchase contracts are terminated (upon the occurrence of certain
events of bankruptcy, insolvency or reorganization with respect to us), the
right to receive contract adjustment payments and deferred contract adjustment
payments will also terminate.

     We will not issue any fractional shares of common stock with respect to the
payment of deferred contract adjustment payments on August 16, 2002. In lieu of
fractional shares otherwise issuable with respect to such payment of deferred
contract adjustment payments, the holder will be entitled to receive an amount
in cash equal to the fraction of a share times the applicable market value.

                                      S-28
<PAGE>   31

     In the event that we elect to defer the payment of contract adjustment
payments on the purchase contracts until August 16, 2002, each holder of Growth
PRIDES will receive on August 16, 2002 in respect of the deferred contract
adjustment payments, in lieu of a cash payment, a number of shares of common
stock equal to (a) the aggregate amount of deferred contract adjustment payments
payable to the holder divided by (b) the applicable market value.

     In the event we exercise our option to defer the payment of contract
adjustment payments, then until the deferred contract adjustment payments have
been paid, we will not declare or pay dividends on, make distributions with
respect to, or redeem, purchase or acquire, or make a liquidation payment with
respect to, any of our capital stock or make guarantee payments with respect to
the above (other than (1) purchases or acquisitions of shares of our capital
stock in connection with the satisfaction by us of our obligations under any
employee benefit plans or the satisfaction by us of our obligations pursuant to
any contract or security outstanding on the date of such event requiring us to
purchase capital stock, (2) as a result of a reclassification of our capital
stock or the exchange or conversion of one class or series of our capital stock
for another class or series of the capital stock, (3) the purchase of fractional
interests in shares of our capital stock pursuant to the conversion or exchange
provisions of the capital stock or the security being converted or exchanged,
(4) dividends or distributions in our capital stock (or rights to acquire
capital stock) or repurchases or redemptions of capital stock solely from the
issuance or exchange of capital stock or (5) redemptions or repurchases of any
rights outstanding under a shareholder rights plan or the declaration thereunder
of a dividend of rights in the future).

ANTI-DILUTION ADJUSTMENTS

     The formula for determining the settlement rate will be subject to
adjustment (without duplication) upon the occurrence of certain events,
including:

          (a) the payment of dividends (and other distributions) of common stock
     on common stock;

          (b) the issuance to all holders of common stock of rights, warrants or
     options (other than any dividend reinvestment or share purchase plans)
     entitling them, for a period of up to 45 days, to subscribe for or purchase
     common stock at less than the current market price thereof;

          (c) subdivisions, splits and combinations of common stock;

          (d) distributions to all holders of common stock of evidences of our
     indebtedness, shares of capital stock, securities, cash or property
     (excluding any dividend or distribution covered by clause (a) or (b) above
     and any dividend or distribution paid exclusively in cash);

          (e) distributions (other than regular quarterly cash distributions)
     consisting exclusively of cash to all holders of common stock in an
     aggregate amount that, together with (1) other all-cash distributions
     (other than regular quarterly cash distributions) made within the preceding
     12 months and (2) any cash and the fair market value, as of the expiration
     of the tender or exchange offer referred to below, of consideration payable
     in respect of any tender or exchange offer (other than consideration
     payable in respect of any odd-lot tender offer) by us or any of our
     subsidiaries for common stock concluded within the preceding 12 months,
     exceeds 15% of our aggregate market capitalization (such aggregate market
     capitalization being the product of the current market price of common
     stock multiplied by the number of shares of common stock then outstanding)
     on the date of such distribution; and

          (f) the successful completion of a tender or exchange offer made by us
     or any of our subsidiaries for common stock which involves an aggregate
     consideration that, together with (1) any cash and the fair market value of
     other consideration payable in respect of any tender or exchange offer
     (other than consideration payable in respect of any odd-lot tender offer)
     by us or any of our subsidiaries for the common stock concluded within the
     preceding 12 months and (2) the aggregate amount of any all-cash
     distributions (other than regular quarterly cash distributions) to all
     holders of common stock made within the preceding 12 months, exceeds 15% of
     our aggregate market capitalization on the expiration of such tender or
     exchange offer. The "current market price" per share of common stock
                                      S-29
<PAGE>   32

     on any day means the average of the daily closing prices for the five
     consecutive trading days selected by us commencing not more than 30 trading
     days before, and ending not later than, the earlier of the day in question
     and the day before the "ex date" with respect to the issuance or
     distribution requiring such computation. For purposes of this paragraph,
     the term "ex date," when used with respect to any issuance or distribution,
     shall mean the first date on which the common stock trades regular way on
     such exchange or in such market without the right to receive such issuance
     or distribution.

     In the case of certain reclassifications, consolidations, mergers, sales or
transfers of assets or other transactions pursuant to which the common stock is
converted into the right to receive other securities, cash or property, each
purchase contract then outstanding would, without the consent of the holders of
the related Income PRIDES or Growth PRIDES, as the case may be, become a
contract to purchase only the kind and amount of securities, cash and other
property receivable upon such reorganization event (except as otherwise
specifically provided, without any interest thereon and without any right to
dividends or distributions thereon which have a record date that is prior to the
purchase contract settlement date) which would have been received by the holder
of the related Income PRIDES or Growth PRIDES immediately prior to the date of
consummation of such transaction if such holder had then settled such purchase
contract.

     If at any time we make a distribution of property to our stockholders which
would be taxable to the stockholders as a dividend for United States federal
income tax purposes (i.e., distributions out of our current or accumulated
earnings and profits of evidences of indebtedness or assets, but generally not
stock dividends or rights to subscribe for capital stock) and, pursuant to the
settlement rate adjustment provisions of the purchase contract agreement, the
settlement rate is increased, this increase may give rise to a taxable dividend
to holders of FELINE PRIDES.

     In addition, we may make increases in the settlement rate as our board of
directors deems advisable to avoid or diminish any income tax to holders of our
capital stock resulting from any dividend or distribution of capital stock (or
rights to acquire capital stock) or from any event treated as such for income
tax purposes or for any other reasons.

     Adjustments to the settlement rate will be calculated to the nearest
1/10,000th of a share. No adjustment in the settlement rate shall be required
unless the adjustment would require an increase or decrease of at least one
percent in the settlement rate; provided, however, that any adjustments which by
reason of the above are not required to be made shall be carried forward and
taken into account in any subsequent adjustment.

     We will be required, within ten business days following the adjustment of
the settlement rate, to provide written notice to the purchase contract agent of
the occurrence of such event and a statement in reasonable detail setting forth
the method by which the adjustment to the settlement rate was determined and
setting forth the revised settlement rate.

     Each adjustment to the settlement rate will result in a corresponding
adjustment to the number of shares of common stock issuable upon early
settlement of a purchase contract.

TERMINATION

     The purchase contracts, and the rights and obligations of us and of the
holders of the FELINE PRIDES thereunder (including the right thereunder to
receive accrued contract adjustment payments or deferred contract adjustment
payments, if any, and the right and obligation to purchase common stock), will
immediately and automatically terminate upon the occurrence of certain events of
bankruptcy, insolvency or reorganization with respect to us. Upon any
termination, the collateral agent will release the related debentures, the
appropriate applicable ownership interest of the Treasury portfolio or the
Treasury securities, as the case may be, held by it to the purchase contract
agent for distribution to the holders, subject, in the case of the Treasury
portfolio or the Treasury securities, to the purchase contract agent's
disposition of the subject securities for cash, and the payment of this cash to
the holders, to the extent that the holders would otherwise have been entitled
to receive less than $1,000 principal amount at maturity of
                                      S-30
<PAGE>   33

any such security. Upon any termination, however, the release and distribution
may be subject to a delay. In the event that we become the subject of a case
under the Bankruptcy Code, the delay may occur as a result of the automatic stay
under the Bankruptcy Code and continue until such automatic stay has been
lifted. We expect any such delay to be limited.

PLEDGED SECURITIES AND PLEDGE AGREEMENT

     Pledged securities will be pledged to the collateral agent, for our
benefit, pursuant to the pledge agreement to secure the obligations of holders
of FELINE PRIDES to purchase common stock under the related purchase contracts.
The rights of holders of FELINE PRIDES to the related pledged securities will be
subject to our security interest created by the pledge agreement.

     No holder of Income PRIDES or Growth PRIDES will be permitted to withdraw
the pledged securities related to the Income PRIDES or Growth PRIDES from the
pledge arrangement except (1) to substitute Treasury securities for the related
debentures or the appropriate applicable ownership interest of the Treasury
portfolio, as the case may be, (2) to substitute debentures or the appropriate
applicable ownership interest of the Treasury portfolio, as the case may be, for
the related Treasury securities (for both (1) and (2), as provided for under
"Description of the FELINE PRIDES -- Creating Growth PRIDES" and "-- Creating
Income PRIDES") or (3) upon the termination or early settlement of the related
purchase contracts.

     Subject to the security interest and the terms of the purchase contract
agreement and the pledge agreement, each holder of Income PRIDES (unless a tax
event redemption has occurred) will be entitled through the purchase contract
agent and the collateral agent to all of the proportional rights and preferences
of the related debentures (including distribution, voting, redemption, repayment
and liquidation rights), and each holder of Growth PRIDES and each holder of
Income PRIDES (if a tax event redemption has occurred) will retain beneficial
ownership of the related Treasury securities or the appropriate applicable
ownership interest of the Treasury portfolio, as applicable, pledged in respect
of the related purchase contracts. We will have no interest in the pledged
securities other than our security interest.

     Except as described in "-- General," the collateral agent will, upon
receipt, if any, of payments on the pledged securities, distribute the payments
to the purchase contract agent, which will in turn distribute those payments,
together with contract adjustment payments received from us, to the persons in
whose names the related Income PRIDES or Growth PRIDES are registered at the
close of business on the record date immediately preceding the date of such
payment.

BOOK ENTRY-SYSTEM

     The Depository Trust Company (the "depositary," which term includes its
successors in this capacity) will act as securities depositary for the FELINE
PRIDES. The FELINE PRIDES will be issued only as fully-registered securities
registered in the name of Cede & Co. (the depositary's nominee). One or more
fully-registered global security certificates, representing the total aggregate
number of FELINE PRIDES, will be issued and will be deposited with the
depositary and will bear a legend regarding the restrictions on exchanges and
registration of transfer thereof referred to below.

     The laws of some jurisdictions may require that some purchasers of
securities take physical delivery of securities in definitive form. These laws
may impair the ability to transfer beneficial interests in the FELINE PRIDES so
long as such FELINE PRIDES are represented by global security certificates.

     The depositary is a limited-purpose trust company organized under the New
York Banking Law, a "banking organization" within the meaning of the New York
Banking Law, a member of the Federal Reserve System, a "clearing corporation"
within the meaning of the New York Uniform Commercial Code and a "clearing
agency" registered pursuant to the provisions of Section 17A of the Exchange
Act. The depositary holds securities that its participants deposit with the
depositary. The depositary also facilitates the settlement among participants of
securities transactions, including transfers and pledges, in

                                      S-31
<PAGE>   34

deposited securities through electronic computerized book-entry changes in
participants' accounts, thereby eliminating the need for physical movement of
securities certificates.

     Direct participants include securities brokers and dealers, banks, trust
companies, clearing corporations and certain other organizations. The depositary
is owned by a number of its direct participants and by the NYSE, the American
Stock Exchange, Inc., and the National Association of Securities Dealers, Inc.
Access to the depositary's system is also available to others, including
securities brokers and dealers, banks and trust companies that clear
transactions through or maintain a direct or indirect custodial relationship
with a direct participant either directly or indirectly. The rules applicable to
the depositary and its participants are on file with the Commission.

     Although the depositary has agreed to the foregoing procedure in order to
facilitate transfer of interests in the global security certificates among
participants, the depositary is under no obligation to perform or continue to
perform these procedures and these procedures may be discontinued at any time.
We will not have any responsibility for the performance by the depositary or its
direct participants or indirect participants under the rules and procedures
governing the depositary.

     In the event that (1) the depositary notifies us that it is unwilling or
unable to continue as a depositary for the global security certificates and no
successor depositary shall have been appointed within 90 days after notice
thereof to us, (2) the depositary at any time ceases to be a clearing agency
registered under the Exchange Act at which time the depositary is required to be
so registered to act as the depositary and no successor depositary shall have
been appointed within 90 days after we learn that the depositary has ceased to
be so registered, (3) we, in our sole discretion, determine that the global
security certificates shall be so exchangeable or (4) there shall have occurred
and be continuing an event of default under the indenture, certificates for the
FELINE PRIDES will be printed and delivered in exchange for beneficial interests
in the global security certificates. Any global debenture that is exchangeable
pursuant to the preceding sentence shall be exchangeable for FELINE PRIDES
certificates registered in such names as the depositary shall direct. It is
expected that these instructions will be based upon directions received by the
depositary from its participants with respect to ownership of beneficial
interests in the global security certificates.

     As long as the depositary or its nominee is the registered owner of the
global security certificates, the depositary or the nominee, as the case may be,
will be considered the sole owner and holder of the global security certificates
and all FELINE PRIDES represented thereby for all purposes under the FELINE
PRIDES and the purchase contract agreement. Except in the limited circumstances
referred to above, owners of beneficial interests in global security
certificates will not be entitled to have such global security certificates or
the FELINE PRIDES represented thereby registered in their names, will not
receive or be entitled to receive physical delivery of FELINE PRIDES
certificates in exchange therefor and will not be considered to be owners or
holders of the global security certificates or any FELINE PRIDES represented
thereby for any purpose under the FELINE PRIDES or the purchase contract
agreement. All payments on the FELINE PRIDES represented by the global security
certificates and all transfers and deliveries of debentures, treasury portfolio,
Treasury securities and common stock with respect thereto will be made to the
depositary or its nominee, as the case may be, as the holder thereof.

     Ownership of beneficial interests in the global security certificates will
be limited to participants or persons that may hold beneficial interests through
institutions that have accounts with the depositary or its nominee. Ownership of
beneficial interests in global security certificates will be shown only on, and
the transfer of those ownership interests will be effected only through, records
maintained by the depositary or its nominee (with respect to participants'
interests) or any such participant (with respect to interests of persons held by
such participants on their behalf). Procedures for settlement of purchase
contracts on August 16, 2002 or upon early settlement will be governed by
arrangements among the depositary, participants and persons that may hold
beneficial interests through participants designed to permit such settlement
without the physical movement of certificates. Payments, transfers, deliveries,
exchanges and other matters relating to beneficial interests in global security
certificates may be subject to various policies and procedures adopted by the
depositary from time to time. None of Coastal, the purchase contract agent

                                      S-32
<PAGE>   35

or any agent of Coastal or the purchase contract agent will have any
responsibility or liability for any aspect of the depositary's or any
participant's records relating to, or for payments made on account of,
beneficial interests in global security certificates, or for maintaining,
supervising or reviewing any of the depositary's records or any participant's
records relating to these beneficial ownership interests.

     The information in this section concerning the depositary and its
book-entry system has been obtained from sources that we believe to be reliable,
but we have not attempted to verify the accuracy thereof.

                                      S-33
<PAGE>   36

                  CERTAIN PROVISIONS OF THE PURCHASE CONTRACT
                       AGREEMENT AND THE PLEDGE AGREEMENT

GENERAL

     Distributions on the FELINE PRIDES will be payable, purchase contracts (and
documents related to the FELINE PRIDES and purchase contracts) will be settled
and transfers of the FELINE PRIDES will be registrable at the office of the
purchase contract agent in the Borough of Manhattan, The City of New York. In
addition, if the FELINE PRIDES do not remain in book-entry form, payment of
distributions on the FELINE PRIDES may be made, at our option, by check mailed
to the address of the person entitled thereto as shown on the security register.

     Shares of common stock will be delivered on August 16, 2002 (or earlier
upon early settlement), or, if the purchase contracts have terminated, the
related pledged securities will be delivered potentially after a delay as a
result of the imposition of the automatic stay under the Bankruptcy Code (see
"Description of the Purchase Contracts -- Termination"), in each case upon
presentation and surrender of the FELINE PRIDES certificate at the office of the
purchase contract agent.

     If a holder of outstanding Income PRIDES or Growth PRIDES fails to present
and surrender the FELINE PRIDES certificate evidencing the Income PRIDES or
Growth PRIDES to the purchase contract agent on August 16, 2002, the shares of
common stock issuable in settlement of the related purchase contract and in
payment of any deferred contract adjustment payments will be registered in the
name of the purchase contract agent and, together with any distributions, shall
be held by the purchase contract agent as agent for the benefit of the holder,
until the FELINE PRIDES certificate is presented and surrendered or the holder
provides satisfactory evidence that such certificate has been destroyed, lost or
stolen, together with any indemnity that may be required by the purchase
contract agent and Coastal.

     If the purchase contracts have terminated prior to August 16, 2002, the
related pledged securities have been transferred to the purchase contract agent
for distribution to the holders entitled thereto and a holder fails to present
and surrender the FELINE PRIDES certificate evidencing such holder's Income
PRIDES or Growth PRIDES to the purchase contract agent, the related pledged
securities delivered to the purchase contract agent and payments thereon shall
be held by the purchase contract agent as agent for the benefit of such holder,
until the FELINE PRIDES certificate is presented or the holder provides the
evidence and indemnity described above.

     The purchase contract agent will have no obligation to invest or to pay
interest on any amounts held by the purchase contract agent pending
distribution, as described above.

     No service charge will be made for any registration of transfer or exchange
of the FELINE PRIDES, except for any tax or other governmental charge that may
be imposed in connection therewith.

MODIFICATION

     The purchase contract agreement and the pledge agreement will contain
provisions permitting us and the purchase contract agent or collateral agent, as
the case may be, with the consent of the holders of not less than a majority of
the purchase contracts at the time outstanding, to modify the terms of the
purchase contracts, the purchase contract agreement and the pledge agreement,
except that no such modification may, without the consent of the holder of each
outstanding purchase contract affected thereby, (a) change any payment date, (b)
change the amount or type of pledged securities related to the purchase
contract, impair the right of the holder of any pledged securities to receive
distributions on the pledged securities or otherwise adversely affect the
holder's rights in or to the pledged securities, (c) change the place or
currency of payment or reduce any contract adjustment payments or any deferred
contract adjustment payments, (d) impair the right to institute suit for the
enforcement of the purchase contract, any contract adjustment payments or any
deferred contract adjustment payments, (e) reduce the number of shares of common
stock or the amount of any other property purchasable under the purchase
contract, increase the price to purchase common stock or any other property upon
settlement of the purchase contract, change

                                      S-34
<PAGE>   37

the purchase contract settlement date or the right to early settlement or
otherwise adversely affect the holder's rights under the purchase contract or
(f) reduce the above-stated percentage of outstanding purchase contracts the
consent of whose holders is required for the modification or amendment of the
provisions of the purchase contracts, the purchase contract agreement or the
pledge agreement; provided that if any amendment or proposal referred to above
would adversely affect only the Income PRIDES or the Growth PRIDES, then only
the affected class of holders will be entitled to vote on the amendment or
proposal and the amendment or proposal will not be effective except with the
consent of the holders of not less than a majority of the affected class.

NO CONSENT TO ASSUMPTION

     Each holder of Income PRIDES or Growth PRIDES, by acceptance thereof, will
under the terms of the purchase contract agreement and the Income PRIDES or
Growth PRIDES, as applicable, be deemed expressly to have withheld any consent
to the assumption (i.e., affirmance) of the related purchase contracts by us or
our trustee if we become the subject of a case under the Bankruptcy Code.

CONSOLIDATION, MERGER, SALE OR CONVEYANCE

     We will covenant in the purchase contract agreement that we will not merge
or consolidate with or into any other entity or sell, assign, transfer, lease or
convey all or substantially all of our properties and assets to any person or
entity, unless we are the continuing corporation or the successor entity is a
corporation organized and existing under the laws of the United States of
America or a state hereof or the District of Columbia and the corporation
expressly assumes our obligations under the purchase contracts, the debentures,
the purchase contract agreement, the pledge agreement, the indenture (including
any supplemental indenture thereto) and the remarketing agreement and we or the
successor corporation is not, immediately after the merger, consolidation, sale,
assignment, transfer, lease or conveyance, in default of our or its payment
obligations thereunder or in material default in the performance of any of our
or its other obligations thereunder.

TITLE

     We, the purchase contract agent and the collateral agent may treat the
registered owner of any FELINE PRIDES as the absolute owner thereof for the
purpose of making payment and settling the related purchase contracts and for
all other purposes.

REPLACEMENT OF FELINE PRIDES CERTIFICATES

     In the event that physical certificates have been issued, any mutilated
FELINE PRIDES certificate will be replaced by us at the expense of the holder
upon surrender of the certificate to the purchase contract agent. FELINE PRIDES
certificates that become destroyed, lost or stolen will be replaced by us at the
expense of the holder upon delivery to us and the purchase contract agent of
evidence of the destruction, loss or theft satisfactory to us and the purchase
contract agent. In the case of a destroyed, lost or stolen FELINE PRIDES
certificate, an indemnity satisfactory to the purchase contract agent and us may
be required at the expense of the holder of the FELINE PRIDES evidenced by the
certificate before a replacement will be issued.

     Notwithstanding the foregoing, we will not be obligated to issue any Income
PRIDES or Growth PRIDES on or after August 16, 2002 (or after early settlement)
or after the purchase contracts have terminated. The purchase contract agreement
will provide that in lieu of the delivery of a replacement FELINE PRIDES
certificate following August 16, 2002, the purchase contract agent, upon
delivery of the evidence and indemnity described above, will deliver the common
stock issuable pursuant to the purchase contracts included in the Income PRIDES
or Growth PRIDES evidenced by the certificate, or, if the purchase contracts
have terminated prior to August 16, 2002, transfer the pledged securities
included in the Income PRIDES or Growth PRIDES evidenced by the certificate.

                                      S-35
<PAGE>   38

GOVERNING LAW

     The purchase contract agreement, the pledge agreement and the purchase
contracts will be governed by, and construed in accordance with, the laws of the
State of New York.

INFORMATION CONCERNING THE PURCHASE CONTRACT AGENT

     The Bank of New York will be the purchase contract agent. The purchase
contract agent will act as the agent for the holders of Income PRIDES and Growth
PRIDES from time to time. The purchase contract agreement will not obligate the
purchase contract agent to exercise any discretionary actions in connection with
a default under the terms of the Income PRIDES and Growth PRIDES or the purchase
contract agreement.

     The purchase contract agreement will contain provisions limiting the
liability of the purchase contract agent. The purchase contract agreement will
contain provisions under which the purchase contract agent may resign or be
replaced. Such resignation or replacement would be effective upon the
appointment of a successor.

     The Bank of New York maintains commercial banking relationships with us.

INFORMATION CONCERNING THE COLLATERAL AGENT

     The Chase Manhattan Bank will be the collateral agent. The collateral agent
will act solely as our agent and will not assume any obligation or relationship
of agency or trust for or with any of the holders of the Income PRIDES and
Growth PRIDES except for the obligations owed by a pledgee of property to the
owner thereof under the pledge agreement and applicable law.

     The pledge agreement will contain provisions limiting the liability of the
collateral agent. The pledge agreement will contain provisions under which the
collateral agent may resign or be replaced. This resignation or replacement
would be effective upon the appointment of a successor.

     The Chase Manhattan Bank maintains commercial banking relationships with
us.

MISCELLANEOUS

     The purchase contract agreement will provide that we will pay all fees and
expenses related to (i) the offering of the FELINE PRIDES, (ii) the retention of
the collateral agent and (iii) the enforcement by the purchase contract agent of
the rights of the holders of the FELINE PRIDES; provided, however, that holders
who elect to substitute the related pledged securities, thereby creating Growth
PRIDES or Income PRIDES or recreating Income PRIDES or Growth PRIDES, will be
responsible for any fees or expenses payable in connection with the
substitution, as well as any commissions, fees or other expenses incurred in
acquiring the pledged securities to be substituted, and we shall not be
responsible for any of the fees or expenses.

                                      S-36
<PAGE>   39

                         DESCRIPTION OF THE DEBENTURES

GENERAL

     The debentures are an issue of the securities described in the accompanying
prospectus. The debentures will be issued as a separate series of securities
under an Indenture dated as of February 24, 1997, as supplemented, between us
and Harris Trust and Savings Bank, as trustee. The debentures are limited to
$400,000,000 (or up to $460,000,000, if the underwriters' over-allotment option
is exercised in full) in aggregate principal amount. The debentures will mature
on August 16, 2004. The debentures may not be redeemed prior to their stated
maturity except as described below. The debentures constitute senior debt
securities as described in the prospectus. In addition to the debentures, we may
issue from time to time other series of securities under the indenture
consisting of notes, debentures or other evidences of indebtedness. Such other
series will be separate from and independent of the debentures. The following
description of the terms of the debentures supplements and modifies the
description of the general terms of the securities set forth in the prospectus,
which we request that you read. Reference herein to debentures refers to the
6 5/8% senior debentures due 2004.

     The debentures will not be subject to a sinking fund provision. Unless a
tax event redemption has occurred prior to August 16, 2002, the entire principal
amount of the debentures will mature and become due and payable, together with
any accrued and unpaid interest thereon, on August 16, 2004.

     Debentures forming a part of the Income PRIDES will be issued in
certificated form, will be in denominations of $25 and integral multiples
thereof, without coupons, and may be transferred or exchanged, without service
charge but upon payment of any taxes or other governmental charges payable in
connection therewith, at the offices described below. Payments on debentures
issued as a global security will be made to the depositary, a successor
depositary or, in the event that no depositary is used, to a paying agent for
the debentures. Principal and interest with respect to certificated debentures
will be payable, the transfer of the debentures will be registrable and
debentures will be exchangeable for debentures of other denominations of a like
aggregate principal amount, at the office or agency maintained by us for such
purpose in the Borough of Manhattan, The City of New York; provided that at our
option, payment of interest may be made by check mailed to the address of the
holder entitled thereto or by wire transfer to an account appropriately
designated by the holder entitled thereto. Notwithstanding the foregoing, so
long as the holder of any debentures is the debt trustee, the payment of
principal and interest on the debentures held by the debt trustee will be made
at such place and to such account as may be designated by the debt trustee. We
will appoint The Bank of New York as the initial paying agent, transfer agent
and registrar for the debentures. We may at any time designate additional
transfer agents and paying agents with respect to the debentures, and may remove
any transfer agent, paying agent or registrar for the debentures; provided, that
we will at all times be required to maintain a paying agent and transfer agent
for the debentures in the Borough of Manhattan, The City of New York.

     Any monies deposited with the debt trustee or any paying agent, or held by
us in trust, for the payment of principal of or interest on any debenture and
remaining unclaimed for two years after such principal or interest has become
due and payable shall, at our request, be repaid to us or released from such
trust, as applicable, and the holder of such debenture shall thereafter look, as
a general unsecured creditor, only to us for the payment thereof.

     The indenture does not contain provisions that afford holders of the
debentures protection in the event of a highly leveraged transaction or other
similar transaction involving us that may adversely affect the holders.

INTEREST

     Each debenture shall bear interest initially at the rate of 6.625% per year
from the original issue date, payable quarterly in arrears on February 16, May
16, August 16 and November 16 of each year, each an "interest payment date,"
commencing November 16, 1999, to the person in whose name the debenture is
registered at the close of business on the first day of the month in which the
interest payment date falls.
                                      S-37
<PAGE>   40

The applicable interest rate on the debentures outstanding on and after August
16, 2002 will be reset on the third business day immediately preceding August
16, 2002 to the reset rate, which rate may be limited as described under
"-- Market Rate Reset." The amount of interest payable for any period will be
computed on the basis of a 360-day year consisting of twelve 30-day months. The
amount of interest payable for any period shorter than a full quarterly period
for which interest is computed will be computed on the basis of the actual
number of days elapsed in such 90-day period. In the event that any date on
which interest is payable on the debentures is not a business day, the payment
of the interest payable on this date will be made on the next succeeding day
that is a business day (and without any interest or other payment in respect of
the delay), except that, if the business day is in the next succeeding calendar
year, then the payment will be made on the immediately preceding business day,
in each case with the same force and effect as if made on such date.

MARKET RATE RESET

     The interest rate on the debentures that remain outstanding on and after
August 16, 2002 will be reset on the third business day immediately preceding
August 16, 2002 to the reset rate, which will be equal to the sum of the reset
spread and the rate of interest on the two-year benchmark Treasury in effect on
the third business day immediately preceding August 16, 2002, and will be
determined by the reset agent as the rate the debentures should bear in order
for a debenture to have an approximate market value on the third business day
immediately preceding August 16, 2002 of 100.5% of their principal amount;
provided that we may limit the reset rate to be no higher than the rate on the
two-year benchmark Treasury on August 16, 2002 plus 200 basis points (2%); and
provided, further, that the reset rate will in no event exceed the maximum rate
permitted by applicable law. The market value on that date may be less than
100.5%, including where the reset spread is limited to the maximum of 2% or if
the reset rate were to be limited by applicable law.

     The "two-year benchmark Treasury" means direct obligations of the United
States (which may be obligations traded on a when-issued basis only) having a
maturity comparable to the remaining term to maturity of the debentures, as
agreed upon by us and the reset agent. The rate for the two-year benchmark
Treasury will be the bid side rate displayed at 10:00 A.M., New York City time,
on the third business day immediately preceding August 16, 2002 in the Telerate
system (or if the Telerate system is (a) no longer available on the third
business day immediately preceding August 16, 2002 or (b) in the opinion of the
reset agent (after consultation with us) no longer an appropriate system from
which to obtain the rate, such other nationally recognized quotation system as,
in the opinion of the reset agent (after consultation with us), is appropriate).
If this rate is not so displayed, the rate for the two-year benchmark Treasury
will be, as calculated by the reset agent, the yield to maturity for the
two-year benchmark Treasury, expressed as a bond equivalent on the basis of a
year of 365 or 366 days, as applicable, and applied on a daily basis, and
computed by taking the arithmetic mean of the secondary market bid rates, as of
10:30 A.M., New York City time, on the third business day immediately preceding
August 16, 2002 of three leading United States government securities dealers
selected by the reset agent (after consultation with us) (which may include the
reset agent or an affiliate thereof). It is currently anticipated that Merrill
Lynch, Pierce, Fenner & Smith Incorporated will be the reset agent.

     On the tenth business day immediately preceding August 16, 2002, the
two-year benchmark Treasury to be used to determine the reset rate on August 16,
2002 will be selected and the reset spread to be added to the rate on the
two-year benchmark Treasury in effect on the third business day immediately
preceding August 16, 2002 will be established by the reset agent, and the reset
spread and the two-year benchmark Treasury will be announced by us (the "reset
announcement date"). We will cause a notice of the reset spread and the two-year
benchmark Treasury to be published on the business day following the reset
announcement date by publication in a daily newspaper in the English language of
general circulation in The City of New York, which is expected to be The Wall
Street Journal. We will request, not later than 7 nor more than 15 calendar days
prior to the reset announcement date, that the depositary notify its
participants holding debentures, Income PRIDES or Growth PRIDES of the reset
announcement date and

                                      S-38
<PAGE>   41

of the procedures that must be followed if any owner of Income PRIDES wishes to
settle the related purchase contract with cash on the business day immediately
preceding August 16, 2002.

OPTIONAL REMARKETING

     Pursuant to the remarketing agreement and subject to the terms of the
supplemental remarketing agreement, on or prior to the fifth business day
immediately preceding August 16, 2002, but no earlier than the payment date
immediately preceding August 16, 2002, holders of debentures that are not
components of Income PRIDES may elect to have their debentures remarketed in the
same manner as debentures that are components of Income PRIDES by delivering
their debentures along with a notice of such election to the custodial agent.
The custodial agent will hold the debentures in an account separate from the
collateral account in which the pledged securities will be held. Holders of
debentures electing to have their debentures remarketed will also have the right
to withdraw the election on or prior to the fifth business day immediately
preceding August 16, 2002.

PUT OPTION UPON A FAILED REMARKETING

     If a failed remarketing has occurred, holders of debentures, holding such
debentures following August 16, 2002, will have the right to put the debentures
to us on September 1, 2002, upon at least three business days' prior notice, at
a price equal to the principal amount, plus accrued and unpaid interest
(including deferred interest), if any, thereon.

TAX EVENT REDEMPTION

     If a tax event shall occur and be continuing, we may, at our option, redeem
debentures in whole (but not in part) at any time at the redemption price (the
"redemption price") equal to, for each debenture, the redemption amount plus
accrued and unpaid interest (including deferred interest), if any, to the date
of redemption; provided that installments of interest on debentures which are
due and payable on or prior to a redemption date will be payable to the holders
of the debentures registered as such at the close of business on the relevant
record dates. If, following the occurrence of a tax event, we exercise our
option to redeem the debentures, the proceeds of the redemption will be payable
in cash to the holders of the debentures. If the tax event redemption occurs
prior to August 16, 2002, the redemption price for the debentures forming a part
of the Income PRIDES will be distributed to the collateral agent, who in turn
will apply an amount equal to the redemption amount to purchase the Treasury
portfolio on behalf of the holders of Income PRIDES and remit the remainder of
the redemption price, if any, to the purchase contract agent for payment to the
holders. The Treasury portfolio will be substituted for the debentures and will
be pledged with the collateral agent to secure the Income PRIDES holders'
obligation to purchase our common stock under the purchase contracts.

     "Tax event" means the receipt by us of an opinion of a nationally
recognized independent tax counsel experienced in such matters to the effect
that, as a result of (a) any amendment to, change in, or announced proposed
change in, the laws (or any regulations thereunder) of the United States or any
political subdivision or taxing authority thereof or therein affecting taxation,
(b) any amendment to or change in an interpretation or application of such laws
or regulations by any legislative body, court, governmental agency or regulatory
authority or (c) any interpretation or pronouncement that provides for a
position with respect to such laws or regulations that differs from the
generally accepted position on the original issue date, which amendment, change
or proposed change is effective or which interpretation or pronouncement is
announced on or after the original issue date, there is more than an
insubstantial risk that interest payable by us on the debentures would not be
deductible, in whole or in part, by us for United States federal income tax
purposes.

     "Treasury portfolio" means, with respect to the applicable principal amount
of debentures, (a) if the tax event redemption date occurs prior to August 16,
2002, a portfolio of zero-coupon U.S. Treasury securities consisting of (i)
interest or principal strips of U.S. Treasury securities which mature on or
prior to August 15, 2002 in an aggregate amount equal to the applicable
principal amount and (ii) with respect

                                      S-39
<PAGE>   42

to each scheduled interest payment date on the debentures that occurs after the
tax event redemption date interest or principal strips of U.S. Treasury
securities which mature on or prior to that date in an aggregate amount equal to
the aggregate interest payment that would be due on the applicable principal
amount of the debentures on that date, and (b) if the tax event redemption date
occurs after August 16, 2002, a portfolio of zero-coupon U.S. Treasury
securities consisting of (i) principal or interest strips of U.S. Treasury
securities which mature on or prior to August 15, 2004 in an aggregate amount
equal to the applicable principal amount and (ii) with respect to each scheduled
interest payment date on the debentures that occurs after the tax event
redemption date interest or principal strips of such U.S. Treasury securities
which mature on or prior to that date in an aggregate amount equal to the
aggregate interest payment that would be due on the applicable principal amount
of the debentures on that date.

     "Applicable principal amount" means either (i) if the tax event redemption
date occurs prior to August 16, 2002, the aggregate principal amount of the
debentures corresponding to the aggregate principal amount of the debentures
that are components of Income PRIDES on the tax event redemption date or (ii) if
the tax event redemption occurs on or after August 16, 2002, the aggregate
principal amount of the debentures corresponding to the aggregate principal
amount of the debentures outstanding on the tax event redemption date.

     "Redemption amount" means for each debenture, the product of (i) the
principal amount of the debenture and (ii) a fraction whose numerator is the
Treasury portfolio purchase price and whose denominator is the applicable
principal amount. All references in this prospectus supplement to the
"principal" of the debentures shall be deemed to include a reference to "and
premium, if any," unless otherwise expressly stated or the context otherwise
requires.

     "Treasury portfolio purchase price" means the lowest aggregate price quoted
by a primary U.S. government securities dealer in New York City (a "primary
treasury dealer") to the quotation agent on the third business day immediately
preceding the tax event redemption date for the purchase of the Treasury
portfolio for settlement on the tax event redemption date.

     "Quotation agent" means (i) Merrill Lynch Government Securities, Inc. and
its respective successors, provided, however, that if the foregoing shall cease
to be a primary treasury dealer, we shall substitute therefor another primary
treasury dealer, or (ii) any other primary treasury dealer selected by us.

     Notice of any redemption will be mailed at least 30 days but not more than
60 days before the redemption date to each registered holder of debentures to be
redeemed at its registered address. Unless we default in payment of the
redemption price, on and after the redemption date interest shall cease to
accrue on such debentures. In the event any debentures are called for
redemption, neither we nor the debt trustee will be required to register the
transfer of or exchange the debentures to be redeemed.

OPTION TO EXTEND INTEREST PAYMENT PERIOD

     We shall have the right at any time, and from time to time, during the term
of the debentures, to defer payments of interest by extending the interest
payment period for a period not extending beyond the maturity date of the
debentures, at the end of which extension period, we will pay all interest then
accrued and unpaid together with interest thereon compounded quarterly at the
rate of 6.625% per year through and including August 15, 2002, and at the reset
rate thereafter, to the extent permitted by applicable law ("compound
interest"); provided, that during any such extension period,

          (a) we may not declare or pay dividends on, or make any distribution
     with respect to, or redeem, purchase, acquire or make a liquidation payment
     with respect to, any of our capital stock (other than (1) purchases or
     acquisitions of our capital stock in connection with the satisfaction by us
     of our obligations under any employee benefit plans or the satisfaction by
     us of our obligations pursuant to any contract or security outstanding on
     the date of the event requiring us to purchase our capital stock, (2) as a
     result of a reclassification of our capital stock or the exchange or
     conversion of one class or series of our capital stock for another class or
     series of our capital stock, (3) the purchase of

                                      S-40
<PAGE>   43

     fractional interests in shares capital stock pursuant to the conversion or
     exchange provisions of the capital stock or the security being converted or
     exchanged, (4) dividends or distributions in capital stock (or rights to
     acquire capital stock) or repurchases or redemptions of capital stock
     solely from the issuance or exchange of capital stock or (5) redemptions or
     repurchases of any rights outstanding under a shareholder rights plan or
     the declaration thereunder of a dividend of rights in the future), and

          (b) we will not make any guarantee payments with respect to the
     foregoing.

     Prior to the termination of any extension period, we may further defer
payments of interest by extending the interest payment period; provided,
however, that the extension period, including all previous and further
extensions, may not extend beyond the maturity of the debentures or end on other
than a payment date. Upon the termination of any extension period and the
payment of all amounts then due, we may commence a new extension period, subject
to the terms set forth in this section. No interest during an extension period,
except at the end thereof, shall be due and payable, but we, at our option, may
prepay on any interest payment date all of the interest accrued during the then
elapsed portion of an extension period. We have no present intention of
exercising our right to defer payments of interest by extending the interest
payment period on the debentures.

     We will give the holders of the debentures notice of our selection of an
extension period ten business days prior to the earlier of (i) the next
succeeding interest payment date or (ii) the date upon which we are required to
give notice, if applicable, to the NYSE (or other applicable self-regulatory
organization) or to holders of the debentures of the record or payment date of
such related interest payment.

BOOK-ENTRY AND SETTLEMENT

     Debentures which are separately offered and separately traded and
debentures released from the pledge following substitution or early settlement
will be issued in the form of one or more global certificates (each a "global
security") registered in the name of the depositary or its nominee. Except under
the limited circumstances described below or except upon recreation of Income
PRIDES, debentures represented by the global security will not be exchangeable
for, and will not otherwise be issuable as, debentures in certificated form. The
global securities described above may not be transferred except by the
depositary to a nominee of the depositary or by a nominee of the depositary to
the depositary or another nominee of the depositary or to a successor depositary
or its nominee.

     The laws of some jurisdictions may require that certain purchasers of
securities take physical delivery of such securities in certificated form. Such
laws may impair the ability to transfer beneficial interests in such a global
security.

     Except as provided below, owners of beneficial interests in such a global
security will not be entitled to receive physical delivery of debentures in
certificated form and will not be considered the holders (as defined in the
indenture) thereof for any purpose under the indenture, and no global security
representing debentures shall be exchangeable, except for another global
security of like denomination and tenor to be registered in the name of the
depositary or its nominee or a successor depositary or its nominee. Accordingly,
each beneficial owner must rely on the procedures of the depositary or if such
person is not a participant, on the procedures of the participant through which
such person owns its interest to exercise any rights of a holder under the
indenture.

                                      S-41
<PAGE>   44

                    CERTAIN FEDERAL INCOME TAX CONSEQUENCES

     The following is a summary of certain of the material United States federal
income tax consequences of the purchase, ownership and disposition of the FELINE
PRIDES, debentures and common stock acquired under a purchase contract. Unless
otherwise stated, this summary deals only with FELINE PRIDES, debentures and
common stock held as capital assets (generally, assets held for investment) by
U.S. holders that purchase FELINE PRIDES or debentures upon original issuance.
The tax treatment of a U.S. holder may vary depending on such U.S. holder's
particular situation. This summary does not address all of the tax consequences
that may be relevant to holders that may be subject to special tax treatment
such as, for example, insurance companies, broker dealers, tax-exempt
organizations, or foreign taxpayers. In addition this summary does not address
any aspects of state, local, or foreign tax laws. This summary is based on the
United States federal income tax law in effect as of the date hereof, which is
subject to change, possibly on a retroactive basis. Each investor should consult
its tax advisor as to the particular tax consequences of purchasing, owning, and
disposing of the FELINE PRIDES or debentures, including the application and
effect of United States, federal, state, local, foreign and other tax laws.

     No statutory, administrative or judicial authority directly addresses the
treatment of FELINE PRIDES or instruments similar to FELINE PRIDES for United
States federal income tax purposes. As a result, no assurance can be given that
the IRS will agree with the tax consequences described herein.

     For purposes of this summary, the term "U.S. holder" means (1) a person who
is a citizen or resident of the United States, (2) a corporation or partnership
created or organized in or under the laws of the United States or any state
thereof or the District of Columbia, (3) an estate the income of which is
subject to United States federal income taxation, regardless of its source, or
(4) a trust if a court within the United States is able to exercise primary
supervision over the administration of such trust and one or more United States
persons have the authority to control all substantial decisions of such trust.

FELINE PRIDES

     Allocation of Purchase Price. A U.S. holder's acquisition of FELINE PRIDES
will be treated as an acquisition of a unit consisting of two components -- in
the case of an Income PRIDES, the debenture and the purchase contract
constituting such Income PRIDES and, in the case of a Growth PRIDES, the
interest in a Treasury security and the purchase contract constituting such
Growth PRIDES. The purchase price of each FELINE PRIDES will be allocated
between the two components in proportion to their respective fair market values
at the time of purchase. Such allocation will establish the U.S. holder's
initial tax basis in the debenture or interest in the Treasury security, as the
case may be, and the purchase contract. Coastal will report the fair market
value of each debenture and each interest in a Treasury security as $24.647 and
$21.157, respectively, and the fair market value of each purchase contract as
$.353. This position will be binding upon each U.S. holder (but not on the IRS)
unless such U.S. holder explicitly discloses a contrary position on a statement
attached to such U.S. holder's timely filed United States federal income tax
return for the taxable year in which a FELINE PRIDES is acquired. Thus, absent
such disclosure, a U.S. holder should allocate the purchase price for a FELINE
PRIDES in accordance with the foregoing. The remainder of this discussion
assumes that this allocation of purchase price will be respected for United
States federal income tax purposes. A different allocation could affect the
timing and character of income to a U.S. holder.

     Ownership of Debentures or Treasury Securities. A U.S. holder will be
treated as owning the debentures or Treasury securities constituting a part of
the Income PRIDES or Growth PRIDES, respectively. Coastal and, by acquiring
FELINE PRIDES, each U.S. holder agree to treat such U.S. holder as the owner,
for United States federal, state and local income and franchise tax purposes, of
the debentures or Treasury securities constituting a part of the FELINE PRIDES
beneficially owned by such U.S. holder. Based upon such agreement, Coastal
intends to take the position, and the remainder of this summary assumes, that
U.S. holders of FELINE PRIDES will be treated as the owners of the debentures or
Treasury securities constituting a part of such FELINE PRIDES for United States
federal, state and local income and franchise tax purposes. The United States
federal income tax consequences of

                                      S-42
<PAGE>   45

owning the debentures or Treasury securities are discussed below (see
"-- Debentures," "-- Treasury Securities" and "-- Tax Event Redemption of
Debentures.").

     Sales, Exchanges or Other Taxable Dispositions of FELINE PRIDES. Upon a
sale, exchange or other taxable disposition (collectively, a "disposition") of
FELINE PRIDES, a U.S. holder will be treated as having sold, exchanged or
disposed of the purchase contract and the debentures, Treasury portfolio or, in
the case of Growth PRIDES, the Treasury securities, that constitute such FELINE
PRIDES and will generally recognize gain or loss equal to the difference between
the portion of the proceeds to such U.S. holder allocable to the purchase
contract and the debentures, Treasury portfolio or Treasury securities, as the
case may be, and such U.S. holder's respective adjusted tax bases in the
purchase contract and the debentures, Treasury portfolio or Treasury securities.
Such gain or loss will generally be capital gain or loss, except to the extent
that such U.S. holder is treated as receiving an amount with respect to accrued
but unpaid interest on the debentures or the Treasury portfolio, which amount
will be treated as ordinary interest income, or to the extent such U.S. holder
is treated as receiving an amount with respect to accrued contract adjustment
payments or deferred contract adjustment payments, which may be treated as
ordinary income, in each case to the extent not previously included in income.
Such capital gain or loss will generally be long-term capital gain or loss if
the U.S. holder held such FELINE PRIDES for more than one year immediately prior
to such disposition. Long-term capital gains of individuals are eligible for
reduced rates of taxation. The deductibility of capital losses is subject to
limitations. If the disposition of FELINE PRIDES occurs when the purchase
contract has negative value, the U.S. holder should be considered to have
received additional consideration for the debentures, Treasury portfolio or
Treasury securities, as the case may be, in an amount equal to such negative
value and to have paid such amount to be released from the U.S. holder's
obligation under the purchase contract. U.S. holders should consult their tax
advisors regarding a disposition of the FELINE PRIDES at a time when the
purchase contract has negative value.

     In determining gain or loss, payments to a U.S. holder of contract
adjustment payments or deferred contract adjustment payments that have not
previously been included in the income of such U.S. holder should either reduce
such U.S. holder's adjusted tax basis in the purchase contract or result in an
increase in the amount realized on the disposition of the purchase contract. Any
contract adjustment payments or deferred contract adjustment payments included
in a U.S. holder's income but not paid should increase such U.S. holder's
adjusted tax basis in the purchase contract. Payments in cash that have been
made by a U.S. holder to create Growth PRIDES but not offset against payments of
contract adjustment payments or deferred contract adjustment payments may
increase such U.S. holder's adjusted tax basis in the purchase contract or
result in a decrease in the amount realized on the disposition of the purchase
contract (see "Contract Adjustment Payments and Deferred Contract Adjustment
Payments; Delivery of Cash" below).

DEBENTURES

     Classification of the Debentures. In connection with the issuance of the
debentures, Skadden, Arps, Slate, Meagher & Flom LLP will deliver an opinion
that, under current law, and based on certain representations, facts and
assumptions set forth in such opinion, the debentures will be classified as
indebtedness for United States federal income tax purposes. Coastal and, by
acquiring Income PRIDES or debentures, each U.S. holder agree to treat the
debentures as indebtedness of Coastal for all United States tax purposes.

     Interest Income and Original Issue Discount. Under the applicable Treasury
regulations and subject to the discussion below regarding Coastal's right to
defer payments of interest on the debentures, the debentures will be considered
to have been issued with OID equal to the excess of 100.5% of their principal
amount over the amount of the original purchase price for the Income PRIDES
allocated to the debentures unless such excess is de minimis (less than
three-fourths of one percent of 100.5% of the principal amount). If the
debentures are treated as issued with OID, a U.S. holder will be required to
include such OID in income on an economic accrual basis over the period between
the issue date of the debentures and the day immediately preceding the purchase
contract settlement date regardless of the U.S. holder's method of tax
accounting. Consequently, each U.S. holder (including those using the cash
method
                                      S-43
<PAGE>   46

of tax accounting) will be required to include OID in income even though Coastal
will not actually make current cash payments with respect to such OID. In
addition, stated interest on the debentures will generally be included in
accordance with such U.S. holder's regular method of tax accounting.

     If Coastal were to exercise its right to defer payments of interest on the
debentures, all of a U.S. holder's taxable interest income with respect to the
debentures would thereafter be accounted for on an economic accrual basis
regardless of such U.S. holder's method of tax accounting, and actual
distributions of stated interest on the debentures would not be reported
separately as taxable income. Consequently, each U.S. holder (including those
using the cash method of tax accounting) would required to include OID in its
gross income even though Coastal would not make actual cash payments during an
extension period.

     The Treasury regulations described above have not yet been addressed in any
rulings or other interpretations by the IRS, and it is possible that the IRS
could take a contrary position. If the IRS were to assert successfully that the
stated interest on the debentures was OID regardless of whether Coastal
exercises its right to defer payments of interest on such debentures, all U.S.
holders would be required to include such stated interest in income on a daily
economic accrual basis as described above.

     U.S. holders that are corporations will not be entitled to a dividends
received deduction with respect to any income recognized with respect to the
debentures.

     Sales, Exchanges or Other Taxable Dispositions of Debentures. A U.S. holder
will recognize gain or loss on a disposition of a debenture (including a
redemption for cash or the remarketing thereof) in an amount equal to the
difference between the amount realized by the U.S. holder on the disposition of
the debenture (except to the extent that such amount realized is characterized
as a payment in respect of accrued but unpaid interest on the debentures that
such U.S. holder has not previously included in gross income, which amount will
be subject to tax as ordinary interest income) and the U.S. holder's adjusted
tax basis in such debenture. Selling expenses incurred by a U.S. holder,
including the remarketing fee, will reduce the amount of gain or increase the
amount of loss recognized by such U.S. holder upon a disposition of a debenture.
Gain or loss realized by a U.S. holder on a disposition of a debenture will
generally be capital gain or loss and will generally be long-term capital gain
or loss if the U.S. holder held such debenture for more than one year
immediately prior to such disposition. Long-term capital gains of individuals
are eligible for reduced rates of taxation. The deductibility of capital losses
is subject to limitations.

TREASURY SECURITIES

     Original Issue Discount. A U.S. holder of Growth PRIDES will be required to
treat its ownership interest in the Treasury securities comprising a Growth
PRIDES as an interest in a bond that was originally issued on the date such
Growth PRIDES is purchased and that has OID equal to the excess of the amount
payable at maturity of such Treasury securities over the purchase price of the
Growth PRIDES allocable to such Treasury securities. A U.S. holder will be
required to include such OID in income on a daily economic accrual basis over
the period between the issue date of the Growth PRIDES and the maturity date of
the Treasury securities, regardless of such U.S. holder's method of tax
accounting and in advance of the receipt of cash attributable to such OID.
Amounts of OID included in a U.S. holder's gross income will increase such U.S.
holder's adjusted tax basis in its interest in the Treasury securities.

     Sales, Exchanges or Other Taxable Dispositions of Treasury Securities. In
the event that a U.S. holder obtains the release of Treasury securities by
delivering debentures to the collateral agent, the U.S. holder will recognize
gain or loss on a subsequent disposition of the Treasury securities in an amount
equal to the difference between the amount realized by the U.S. holder on such
disposition and the U.S. holder's adjusted tax basis in the Treasury securities.
Such gain or loss will generally be capital gain or loss and will generally be
long-term capital gain or loss if the U.S. holder held such Treasury securities
for more than one year immediately prior to such disposition. Long-term capital
gains of individuals are eligible for reduced rates of taxation. The
deductibility of capital losses is subject to limitations.
                                      S-44
<PAGE>   47

PURCHASE CONTRACTS

     Contract Adjustment Payments and Deferred Contract Adjustment Payments;
Delivery of Cash. There is no direct authority addressing the treatment, under
current law, of the contract adjustment payments and deferred contract
adjustment payments, or the delivery of cash in respect of excess accrued
contract adjustment payments by a U.S. holder of Income PRIDES upon the creation
of Growth PRIDES and such treatment is, therefore, unclear. Contract adjustment
payments and deferred contract adjustment payments may constitute taxable income
to a U.S. holder of FELINE PRIDES when received or accrued, in accordance with
the U.S. holder's regular method of tax accounting. To the extent Coastal is
required to file information returns with respect to contract adjustment
payments or deferred contract adjustment payments, it intends to report such
payments as taxable income to each U.S. holder. U.S. holders should consult
their tax advisors concerning the treatment of contract adjustment payments and
deferred contract adjustment payments and the delivery of cash upon creation of
Growth PRIDES, including the possibility that any contract adjustment payment or
deferred contract adjustment payment may be treated as a loan, purchase price
adjustment, rebate or payment analogous to an option premium, rather than being
includible in income on a current basis, and that the delivery of cash upon
creation of Growth PRIDES may be treated as an offset to contract adjustment
payments or deferred contract adjustment payments or as a purchase price
adjustment. The treatment of contract adjustment payments, deferred contract
adjustment payments and the delivery of cash upon creation of Growth PRIDES
could affect a U.S. holder's adjusted tax basis in a purchase contract or common
stock received under a purchase contract or the amount realized by a U.S. holder
upon the sale or disposition of a FELINE PRIDES or the termination of a purchase
contract. See "-- Acquisition of Common Stock Under a Purchase Contract,"
"Sales, Exchanges or Other Taxable Dispositions of FELINE PRIDES" and
"-- Termination of Purchase Contract."

     Acquisition of Common Stock Under a Purchase Contract. A U.S. holder of
FELINE PRIDES generally will not recognize gain or loss on the purchase of
common stock under a purchase contract, except with respect to any cash paid in
lieu of a fractional share of common stock. Subject to the following discussion,
a U.S. holder's aggregate initial tax basis in the common stock received under a
purchase contract should generally equal the purchase price paid for such common
stock plus such U.S. holder's adjusted tax basis in the purchase contract (if
any), less the portion of such purchase price and adjusted tax basis allocable
to the fractional share. Payments of contract adjustment payments or deferred
contract adjustment payments that have been received in cash by a U.S. holder
but not included in income by such U.S. holder should reduce such U.S. holder's
adjusted tax basis in the purchase contract or the common stock to be received
thereunder; payments in cash that have been made by a U.S. holder to create
Growth PRIDES but not offset against payments of contract adjustment payments or
deferred contract adjustment payments may increase such U.S. holder's adjusted
tax basis in the purchase contract or the common stock to be received thereunder
(see "Contract Adjustment Payments and Deferred Contract Adjustment Payments;
Delivery of Cash" above). The holding period for common stock received under a
purchase contract will commence on the day following the acquisition of such
common stock.

     Ownership of Common Stock Acquired Under the Purchase Contract. Any
distribution on common stock paid by Coastal out of its current or accumulated
earnings and profits (as determined for United States federal income tax
purposes) will constitute a dividend and will be includible in income by a U.S.
holder when received. Any such dividend will be eligible for the dividends
received deduction if received by an otherwise qualifying corporate U.S. holder
that meets the holding period and other requirements for the dividends received
deduction.

     Upon a disposition of common stock, a U.S. holder will generally recognize
capital gain or loss equal to the difference between the amount realized and
such U.S. holder's adjusted tax basis in the common stock. Such capital gain or
loss will generally be long-term capital gain or loss if the U.S. holder held
such common stock for more than one year immediately prior to such disposition.
Long-term capital gains of individuals are eligible for reduced rates of
taxation. The deductibility of capital losses is subject to limitations.
                                      S-45
<PAGE>   48

     Early Settlement of Purchase Contract. A U.S. holder of FELINE PRIDES will
not recognize gain or loss on the receipt of such U.S. holder's proportionate
share of debentures, Treasury securities or the Treasury portfolio upon early
settlement of a purchase contract and will have the same adjusted tax basis in
such debentures, Treasury securities or the Treasury portfolio as before such
early settlement. Any contract adjustment payments or deferred contract
adjustment payments that have been included in a U.S. holder's income but
forfeited and not paid upon early settlement of a purchase contract should
increase such U.S. holder's adjusted tax basis in the common stock received
under a purchase contract.

     Termination of Purchase Contract. If a purchase contract terminates, a U.S.
holder of FELINE PRIDES will recognize gain or loss equal to the difference
between the amount realized (if any) upon such termination and such U.S.
holder's adjusted tax basis (if any) in the purchase contract at the time of
such termination. Payments of contract adjustment payments or deferred contract
adjustment payments received by a U.S. holder but not included in income by such
U.S. holder should either reduce such U.S. holder's adjusted tax adjusted basis
in the purchase contract or increase the amount realized on the termination of
the purchase contract. Any contract adjustment payments or deferred contract
adjustment payments included in a U.S. holder's income but not paid should
increase such U.S. holder's adjusted tax basis in the purchase contract;
payments in cash that have been made by a U.S. holder to create Growth PRIDES
but not offset against payments of contract adjustment payments or deferred
contract adjustment payments may increase such U.S. holder's adjusted tax basis
in the purchase contract or result in a deduction on the termination of the
purchase contract (see "Contract Adjustment Payments and Deferred Contract
Adjustment Payments; Delivery of Cash" above). Such gain or loss generally will
be capital gain or loss and generally will be long-term capital gain or loss if
the U.S. holder held such purchase contract for more than one year immediately
prior to such termination. Long-term capital gains of individuals are eligible
for reduced rates of taxation. The deductibility of capital losses is subject to
limitations. A U.S. holder will not recognize gain or loss on the receipt of
such U.S. holder's proportionate share of the debentures, Treasury securities or
Treasury portfolio upon termination of the purchase contract and will have the
same adjusted tax basis in such debentures, Treasury securities or Treasury
portfolio as before such distribution.

     Adjustment to Settlement Rate. U.S. holders of FELINE PRIDES might be
treated as receiving a constructive dividend distribution from Coastal if (1)
the settlement rate is adjusted and as a result of such adjustment the
proportionate interest of U.S. holders of FELINE PRIDES in Coastal's assets or
earnings and profits is increased and (2) the adjustment is not made pursuant to
a bona fide, reasonable anti-dilution formula. An adjustment in the settlement
rate would not be considered made pursuant to such a formula if the adjustment
were made to compensate a U.S. holder for certain taxable distributions with
respect to the common stock.

SUBSTITUTION OF TREASURY SECURITIES TO CREATE OR RECREATE GROWTH PRIDES

     A U.S. holder of an Income PRIDES that delivers Treasury securities to the
collateral agent in substitution for debentures will generally not recognize
gain or loss upon the delivery of such Treasury securities or the release of the
debentures to such U.S. holder. Such U.S. holder will continue to take into
account items of income or deduction otherwise includible or deductible,
respectively, by such U.S. holder with respect to such Treasury securities and
debentures, and such U.S. holder's adjusted tax bases in the Treasury
securities, the debentures and the purchase contract will not be affected by
such delivery and release.

SUBSTITUTION OF DEBENTURES TO CREATE OR RECREATE INCOME PRIDES

     A U.S. holder of a Growth PRIDES that delivers debentures to the collateral
agent in substitution for Treasury securities will generally not recognize gain
or loss upon the delivery of such debentures or the release of the Treasury
securities to the U.S. holder. Such U.S. holder will continue to take into
account items of income or deduction otherwise includible or deductible,
respectively, by such U.S. holder with respect to such Treasury securities and
debentures, and such U.S. holder's adjusted tax bases in the

                                      S-46
<PAGE>   49

Treasury securities, the debentures and the purchase contract will not be
affected by such delivery and release.

TAX EVENT REDEMPTION OF DEBENTURES

     A tax event redemption will be a taxable event for U.S. holders of
debentures which will be subject to tax in the manner described under
"Debentures -- Sales, Exchanges or Other Taxable Dispositions of Debentures."

     Ownership of Treasury Portfolio. Coastal and, by acquiring Income PRIDES,
each U.S. holder agree to treat such U.S. holder as the owner, for United States
federal, state and local income and franchise tax purposes, of the applicable
ownership interest of the Treasury portfolio constituting a part of the Income
PRIDES beneficially owned by such U.S. holder in the event of a tax event
redemption prior to purchase contract settlement date. Based on such agreement,
each U.S. holder will include in income any amount earned on such pro rata
portion of the Treasury portfolio for all United States federal, state and local
income and franchise tax purposes. The remainder of this summary assumes that
U.S. holders of Income PRIDES will be treated as the owners of the applicable
ownership interest of the Treasury portfolio constituting a part of such Income
PRIDES for United States federal, state and local income and franchise tax
purposes.

     Interest Income and Original Issue Discount. The Treasury portfolio will
consist of stripped U.S. Treasury securities. Following a tax event redemption
prior to purchase contract settlement date, a U.S. holder of Income PRIDES will
be required to treat its pro rata portion of each U.S. Treasury security in the
Treasury portfolio as a bond that was originally issued on the date the
collateral agent acquired the relevant U.S. Treasury securities and that has OID
equal to the U.S. holder's pro rata portion of the excess of the amounts payable
on such U.S. Treasury securities over the value of the U.S. Treasury securities
at the time the collateral agent acquires them on behalf of holders of Income
PRIDES. A U.S. holder, whether on the cash or accrual method of tax accounting,
will be required to include OID (other than OID on short-term U.S. Treasury
securities as defined below) in income for United States federal income tax
purposes as it accrues on a constant yield to maturity basis. The amount of such
excess will constitute only a portion of the total amounts payable in respect of
the Treasury portfolio. Consequently, a portion of each scheduled interest
payment to U.S. holders will be treated as a return of such U.S. holders'
investment in the Treasury portfolio and will not be considered current income
for United States federal income tax purposes.

     In the case of any U.S. Treasury security with a maturity of one year or
less from the date of its issue (a "short-term U.S. Treasury Security"), in
general only accrual basis taxpayers will be required to include OID in income
as it accrues. Unless such an accrual basis U.S. holder elects to accrue the OID
on a short-term U.S. Treasury Security according to the
constant-yield-to-maturity method, such OID will be accrued on a straight-line
basis.

     Tax Basis of the Treasury Portfolio. A U.S. holder's initial tax basis in
such U.S. holder's applicable ownership interest of the Treasury portfolio will
equal such U.S. holder's pro rata portion of the amount paid by the collateral
agent for the Treasury portfolio. A U.S. holder's adjusted tax basis in the
Treasury portfolio will be increased by the amount of OID included in income
with respect thereto and decreased by the amount of cash received in respect of
the Treasury portfolio.

                                      S-47
<PAGE>   50

                              ERISA CONSIDERATIONS

     Generally, any employee benefit plan (as defined in Section 3(3) of the
Employee Retirement Income Security Act of 1974, as amended (ERISA), plans and
individual retirement accounts that are subject to ERISA or Section 4975 of the
Code, and entities whose assets are considered assets of such plans pursuant to
29 C.P.R. Section 2510.3-10 (Plans) may purchase the securities subject to the
investing fiduciary's determination that the investment in the securities
satisfies ERISA's fiduciary standards and other requirements under ERISA or the
Code applicable to investments by Plans. Accordingly, among other factors, the
investing fiduciary should consider whether the investment would satisfy the
prudence and diversification requirements of ERISA and would be consistent with
the documents and instruments governing the Plans.

     Under regulations issued by the U.S. Department of Labor (DOL), a Plan that
owns the securities may be deemed to own a portion of the Debentures. In
addition, we and our affiliates may be "parties in interest" (within the meaning
of ERISA) or "disqualified persons" (within the meaning of Section 4975 of the
Code) with respect to certain Plans (generally, Plans maintained or sponsored
by, or contributed to by, any such persons or Plans with respect to which any
such persons are fiduciaries or service providers). The acquisition and
ownership of the securities and a deemed acquisition and ownership of an
interest in the debentures by a Plan with respect to which we or any of our
affiliates is considered a party in interest or a disqualified person may
constitute or result in a prohibited transaction under Section 406 of ERISA or
Section 4975 of the Code, unless such securities are acquired and are held
pursuant to and in accordance with an applicable exemption. In this regard, the
DOL has issued prohibited transaction class exemptions (PTCEs) that may apply to
the acquisition and holding of the securities. These class exemptions are PTCE
84-14 (respecting transactions determined by independent qualified professional
asset managers), PTCE 90-1 (respecting insurance company separate accounts),
PTCE 91-38 (respecting bank collective trust funds), PTCE 95-60 (respecting
insurance company general accounts) and PTCE 96-23 (respecting transactions
determined by in-house managers).

     Any fiduciary proposing to acquire the securities on behalf of a Plan
should consult with ERISA counsel for the Plan and should not acquire the
securities unless it is determined that such acquisition and holding does not
and will not constitute a prohibited transaction and will satisfy the applicable
fiduciary requirements imposed under ERISA. Any such acquisition by a Plan shall
be deemed a representation by the Plan and the fiduciary effecting the
investment on behalf of the Plan that such acquisition and holding satisfies the
applicable fiduciary requirements of ERISA, and is either (i) not a prohibited
transaction under either ERISA or the Code and is otherwise permissible under
the applicable law or (ii) qualified for exemptive relief from the prohibited
transaction provisions of ERISA and the Code in accordance with one or more of
the foregoing PTCEs or another available prohibited transaction exemption.

                                      S-48
<PAGE>   51

                                  UNDERWRITING

     Subject to the terms and conditions set forth in an underwriting agreement
among us, Merrill Lynch, Pierce, Fenner & Smith Incorporated, Lehman Brothers
Inc. and Banc of America Securities LLC (together, the underwriters), we have
agreed to sell to the underwriters, and the underwriters have agreed severally
to purchase from us, the number of Income PRIDES and Growth PRIDES and the
aggregate principal amount of debentures set forth below opposite each
underwriter's name. In the underwriting agreement, the underwriters have agreed,
subject to the terms and conditions set forth therein, to purchase all of the
Income PRIDES, Growth PRIDES and debentures offered hereby if any of such Income
PRIDES, Growth PRIDES or debentures are purchased.

<TABLE>
<CAPTION>
                                                                                     AGGREGATE
                                                                                     PRINCIPAL
                                                      NUMBER OF       NUMBER OF      AMOUNT OF
UNDERWRITER                                         INCOME PRIDES   GROWTH PRIDES   DEBENTURES
- --------------------------------------------------  -------------   -------------   -----------
<S>                                                 <C>             <C>             <C>
Merrill Lynch, Pierce, Fenner & Smith
             Incorporated.........................    7,300,000         700,000     $17,500,000
Lehman Brothers Inc...............................    5,475,000         525,000      13,125,000
Banc of America Securities LLC....................    1,825,000         175,000       4,375,000
                                                     ----------       ---------     -----------
             Total................................   14,600,000       1,400,000     $35,000,000
                                                     ==========       =========     ===========
</TABLE>

     The underwriters have advised us that they propose initially to offer the
Income PRIDES, Growth PRIDES and debentures to the public at the public offering
prices set forth on the cover page of this prospectus supplement and to certain
dealers at such prices less a concession not in excess of $.45 per Income
PRIDES, $.3825 per Growth PRIDES and $3.00 per $1,000 principal amount of
debentures. The underwriters may allow, and such dealers may reallow, a discount
not in excess of $.10 per Income PRIDES, $.10 per Growth PRIDES and $1.00 per
$1,000 principal amount of debentures to certain other dealers. After the
initial public offering, the public offering prices, concessions and discounts
may be changed.

     The underwriters may also purchase up to an additional 2,400,000 FELINE
PRIDES, in any combination of Income PRIDES and Growth PRIDES, at their public
offering prices less underwriting commissions, within 30 days of the date hereof
in order to cover over-allotments, if any; provided, however, that the
underwriters must purchase at least as many debentures as Growth PRIDES.

     Until the distribution of the securities is completed, rules of the
Securities and Exchange Commission may limit the ability of the underwriters and
any selling group members to bid for and purchase the securities or shares of
common stock. As an exception to these rules, the underwriters are permitted to
engage in certain transactions that stabilize the price of the securities or the
common stock. Such transactions consist of bids or purchases for the purpose of
pegging, fixing or maintaining the price of the securities or the common stock.

     If the underwriters create a short position in the securities in connection
with the offering, i.e., if they sell more securities than are set forth on the
cover page of this prospectus supplement, the underwriters may reduce that short
position by purchasing securities in the open market. The underwriters may also
elect to reduce any short position by exercising all or part of the
over-allotment options described below.

     The underwriters may also impose a penalty bid on certain selling group
members. This means that if the underwriters purchase securities in the open
market to reduce the underwriters' short position or to stabilize the price of
the securities, they may reclaim the amount of the selling concession from any
selling group members who sold those securities as part of the offering.

     In general, purchases of a security for the purpose of stabilization or to
reduce a short position could cause the price of the security and the common
stock to be higher than it might be in the absence of such purchases. The
imposition of a penalty bid might also have an effect on the price of a security
if it were to discourage resales of the security.

                                      S-49
<PAGE>   52

     Neither we nor any of the underwriters makes any representation or
prediction as to the direction or magnitude of any effect that the transactions
described above may have on the price of the securities or the common stock. In
addition, neither we nor any of the underwriters make any representation that
the underwriters will engage in such transactions or that such transactions,
once commenced, will not be discontinued without notice.

     Prior to this offering, there has been no public market for the Income
PRIDES, Growth PRIDES or debentures. The public offering price for the Income
PRIDES, Growth PRIDES and debentures was determined in negotiations between us
and the underwriters. In determining the terms of the Income PRIDES, Growth
PRIDES and debentures, including the public offering price, we and the
underwriters considered the market price of the common stock and also considered
our recent consolidated results of operations, our future prospects and the
industries in which we operate, market prices and terms of, and yields on,
securities of other companies considered to be comparable to us and prevailing
conditions in the securities markets. The Income PRIDES and the Growth PRIDES
have been approved for listing on the NYSE subject to official notice of
issuance. We do not intend to apply for any separate listing of the debentures.
There can be no assurance that an active trading market will develop for the
Income PRIDES, the Growth PRIDES or the debentures, or that the Income PRIDES,
Growth PRIDES or the debentures will trade at or above the initial public
offering price in the public market subsequent to the offering.

     We have agreed to indemnify the underwriters against, or to contribute to
payments that the underwriters may be required to make in respect of, certain
liabilities, including certain liabilities under the Securities Act of 1933.

     This prospectus supplement, as amended or supplemented, may be used by the
remarketing agent for remarketing or upon early settlement or cash settlement of
the purchase contracts.

     In the ordinary course of their respective businesses, the underwriters and
their affiliates have performed, and may in the future perform, investment
banking and/or commercial banking services for us.

                                 LEGAL OPINIONS

     The validity of the purchase contracts, the common stock issuable upon
settlement thereof and the debentures will be passed upon for us by Austin M.
O'Toole, Esq., our Senior Vice President and Secretary, and certain legal
matters will be passed upon for the underwriters by Cahill Gordon & Reindel, a
partnership including a professional corporation, New York, New York. Skadden,
Arps, Slate, Meagher & Flom LLP, New York, New York, will be acting as special
counsel to the underwriters and special tax counsel to us.

                                      S-50
<PAGE>   53

PROSPECTUS
- ---------------------

                                 $1,000,000,000

                            THE COASTAL CORPORATION

                               COASTAL FINANCE II

                              COASTAL FINANCE III
                                 COASTAL TOWER
                              NINE GREENWAY PLAZA
                           HOUSTON, TEXAS 77046-0995
                                 (713) 877-1400

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

     The following are types of securities that we may offer and sell under this
prospectus:

<TABLE>
<S>                                        <C>
- - Debt securities                          - Common stock warrants
- - Preferred stock                          - Subordinated deferrable interest
- - Common stock                             debentures
                                           - Stock purchase contracts
                                           - Stock purchase units
</TABLE>

     In addition, we, in conjunction with our trusts, may offer and sell:

     - Trust preferred securities and related guarantees

     We may offer these securities separately or as units which may include
other securities. We will describe in a prospectus supplement, which must
accompany this prospectus, the securities we are offering and selling, as well
as the specific terms of the securities. Those terms may include:

<TABLE>
<S>                                        <C>
- - Maturity                                 - Redemption terms
- - Interest rate                            - Listing on a securities exchange
- - Sinking fund terms                       - Amount payable at maturity
- - Currency of payments                     - Ranking
</TABLE>

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

THE SECURITIES AND EXCHANGE COMMISSION AND STATE SECURITIES REGULATORS HAVE NOT
APPROVED OR DISAPPROVED THESE SECURITIES, OR DETERMINED IF THIS PROSPECTUS IS
TRUTHFUL OR COMPLETE. ANY REPRESENTATION TO THE CONTRARY IS A CRIMINAL OFFENSE.

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

     We may offer the securities in amounts, at prices and on terms determined
at the time of offering. We may sell the securities directly to you, through
agents we select, or through underwriters and dealers we select. If we use
agents, underwriters or dealers to sell the securities, we will name them and
describe their compensation in a prospectus supplement.

                                  July 2, 1999
<PAGE>   54

                               TABLE OF CONTENTS

<TABLE>
<S>                                                            <C>
Where You Can Find More Information.........................     1
Incorporation of Certain Documents by Reference.............     2
The Coastal Corporation.....................................     3
The Trusts..................................................     3
Use of Proceeds.............................................     4
Accounting Treatment Relating to Trust Securities...........     4
Ratios of Earnings to Fixed Charges and Earnings to Combined
  Fixed Charges and Preferred Stock Dividends...............     4
Description of Equity Securities............................     5
Description of Common Stock Warrants........................    12
Description of Trust Preferred Securities...................    14
Description of Trust Preferred Securities Guarantees........    15
Description of Debt Securities..............................    18
Description of Subordinated Deferrable Interest
  Debentures................................................    30
Description of Stock Purchase Contracts And Stock Purchase
  Units.....................................................    36
Plan of Distribution........................................    36
Legal Matters...............................................    38
Experts.....................................................    38
</TABLE>

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

                      WHERE YOU CAN FIND MORE INFORMATION

     The Coastal Corporation files annual, quarterly and special reports, proxy
statements and other information with the Securities and Exchange Commission
under the Securities Exchange Act of 1934, as amended. You may read and copy
this information at the following locations of the Commission:

<TABLE>
<S>                           <C>                           <C>
Judiciary Plaza, Room         Seven World Trade Center      Citicorp Center
10024                         Suite 1300                    500 West Madison Street
450 Fifth Street, N.W.        New York, New York 10048      Suite 1400
Washington, D.C. 20549                                      Chicago, Illinois 60661
</TABLE>

     You can also obtain copies of this information by mail from the Public
Reference Room of the Commission, 450 Fifth Street, N.W., Room 10024, Washington
D.C. 20549, at prescribed rates. You may obtain information on the operation of
the Public Reference Room by calling the Commission at (800) SEC-0330.

     The Commission also maintains an internet world wide web site that contains
reports, proxy statements and other information about issuers, like Coastal, who
file electronically with the Commission. The address of that site is
http://www.sec.gov.

     You can also inspect reports, proxy statements and other information about
us at the offices of the New York Stock Exchange, Inc., 20 Broad Street, New
York, New York 10005.

     We and our trusts have filed jointly with the Commission a registration
statement on Form S-3 that registers the securities we or they are offering. The
registration statement, including the attached exhibits and schedules, contains
additional relevant information about Coastal, the trusts and the securities
offered. The rules and regulations of the Commission allow us to omit certain
information included in the registration statement from this prospectus.
<PAGE>   55

                INCORPORATION OF CERTAIN DOCUMENTS BY REFERENCE

     The Commission allows us to "incorporate by reference" information into
this prospectus. This means that we can disclose important information to you by
referring you to another document filed separately with the Commission. The
information incorporated by reference is considered to be part of this
prospectus, except for any information that is superseded by information that is
included directly in this document.

     This prospectus includes by reference the documents listed below that we
have previously filed with the Commission and that are not included in or
delivered with this document. They contain important information about us and
our financial condition.

<TABLE>
<CAPTION>
                FILING                              PERIOD
                ------                              ------
<S>                                      <C>
Annual Report on Form 10-K............   Year ended December 31, 1998

Quarterly Report on Form 10-Q.........   Quarter ended March 31, 1999

Current Reports on Form 8-K...........   Filed February 4, 1999
                                         Filed February 8, 1999
                                         Filed May 7, 1999
                                         Filed May 10, 1999
</TABLE>

     We incorporate by reference additional documents that we may file with the
Commission between the date of this prospectus and the date of the closing of
this offering. These documents include periodic reports, such as Annual Reports
on Form 10-K, Quarterly Reports on Form 10-Q and Current Reports on Form 8-K, as
well as proxy statements.

     You can obtain any of the documents incorporated by reference in this
document from us without charge, excluding any exhibits to those documents
unless the exhibit is specifically incorporated by reference as an exhibit to
this prospectus. You can obtain documents incorporated by reference in this
prospectus by requesting them in writing or by telephone from us at the
following address:

                            Austin M. O'Toole, Esq.
                                   Secretary
                            The Coastal Corporation
                                 Coastal Tower
                              Nine Greenway Plaza
                           Houston, Texas 77046-0995

     We have not authorized anyone to give any information or make any
representation about us that is different from, or in addition to, that
contained in this prospectus or in any of the materials that we have
incorporated by reference into this document. Therefore, if anyone does give you
information of this sort, you should not rely on it. If you are in a
jurisdiction where offers to exchange or sell, or solicitations of offers to
exchange or purchase, the securities offered by this document or the
solicitation of proxies is unlawful, or if you are a person to whom it is
unlawful to direct these types of activities, then the offer presented in this
document does not extend to you. The information contained in this document
speaks only as of the date of this document, unless the information specifically
indicates that another date applies.

                                        2
<PAGE>   56

                            THE COASTAL CORPORATION

     We, acting through our subsidiaries, are a diversified energy holding
company with subsidiary operations in:

     - natural gas gathering, marketing, processing, storage and transmission;

     - petroleum refining, marketing and distribution and chemicals;

     - gas and oil exploration and production;

     - coal mining; and

     - power.

     Coastal was incorporated under the laws of Delaware in 1972 to become the
successor parent, through a corporate restructuring, of a corporate enterprise
founded in 1955. Our principal office is located at Coastal Tower, Nine Greenway
Plaza, Houston, Texas 77046-0995; our telephone number is 713-877-1400. In this
prospectus, unless otherwise indicated, "we" and "Coastal" refer to The Coastal
Corporation and its consolidated subsidiaries.

     You can obtain additional information about us in the reports and other
documents incorporated by reference in this prospectus. See "Where You Can Find
More Information" and "Incorporation of Certain Documents by Reference."

                                   THE TRUSTS

     We created two Delaware business trusts pursuant to two declarations of
trust executed by us as sponsor for each trust, appointed trustees for each
trust and filed a certificate of trust for each trust with the Delaware
Secretary of State. The trusts are named Coastal Finance II and Coastal Finance
III, which we refer to herein as, collectively, the "trusts" and, individually,
each a "trust." The amended and restated declaration of trust for each trust,
(as so amended and restated, the "declaration") which is filed as an exhibit to
the registration statement of which this prospectus forms a part, states the
terms and conditions for each trust to issue and sell its trust preferred
securities and trust common securities, which we refer to herein, together with
the trust preferred securities, as the trust securities.

     Each trust will exist solely to:

     - issue and sell its trust securities;

     - use the proceeds from the sale of its trust securities to purchase and
       hold a series of our subordinated debt securities;

     - maintain its status as a grantor trust for federal income tax purposes;
       and

     - engage in other activities that are necessary or incidental to these
       purposes.

     We will purchase all of the trust common securities of each trust. The
trust common securities will represent an aggregate liquidation amount equal to
at least 3% of each trust's total capitalization. The trust common securities
will have terms substantially identical to, and will rank equal in priority of
payment with, the trust preferred securities. However, if we default on the
subordinated debt securities, then cash distributions and liquidation,
redemption and other amounts payable on the trust common securities will be
subordinate to the trust preferred securities in priority of payment.

     We will guarantee the trust preferred securities as described later in this
prospectus.

     The trustees will conduct each trust's business and affairs. Only we, as
owner of the trust common securities, will have the right to appoint, remove or
replace the trustees. In addition, we can increase or decrease the number of
trustees. A majority of the trustees, which we refer to herein as the regular
trustees of each trust, will be persons who are our employees or officers or
affiliated with us. One trustee of
                                        3
<PAGE>   57

each trust will be a financial institution which will be unaffiliated with us
and which will act as property trustee and as indenture trustee for purposes of
the Trust Indenture Act of 1939, as amended.

     The property trustee will hold title to the subordinated debt securities
for the benefit of the holders of the trust securities, and will have the power
to exercise all rights, powers and privileges as the holder of the subordinated
debt securities under the indenture pursuant to which the subordinated debt
securities are issued. In addition, the property trustee will maintain exclusive
control of a segregated non-interest bearing bank account to hold all payments
made in respect of the subordinated debt securities for the benefit of the
holders of the trust securities. The property trustee will make payments of
distributions and payments on liquidation, redemption and otherwise to the
holders of the trust securities out of funds from the property account. The
guarantee trustee will hold the guarantee by us of the trust securities for the
benefit of the holders of the trust preferred securities.

     In addition, unless the property trustee maintains a principal place of
business in the State of Delaware, and otherwise meets the requirements of
applicable law, another trustee of each trust, the Delaware trustee, will either
be a natural person who is a resident of the State of Delaware or an entity
which has its principal place of business or resides in the State of Delaware.
We have appointed The Bank of New York (Delaware), 400 White Clay Center, Route
273, Newark, Delaware 19711, as Delaware trustee. We will pay all fees and
expenses related to each trust and each offering of the related trust preferred
securities and will pay all ongoing costs and expenses of each trust, except
such trust's obligations under the related trust securities.

     The rights of the holders of the trust preferred securities, including
economic rights, rights to information and voting rights, are set forth in each
trust's declaration and the Delaware Business Trust Act. The principal place of
business of the trusts is c/o The Coastal Corporation, Coastal Tower, Nine
Greenway Plaza, Houston, Texas 77046-0995, and their telephone number is
713-877-1400.

                                USE OF PROCEEDS

     Except as may otherwise be described in the prospectus supplement relating
to an offering of securities, the net proceeds from the sale of the securities
will be used to repay our short-term borrowings and for repayment of borrowings
under various credit agreements, including short-term borrowings and credit
agreements of our subsidiaries, and for other general corporate purposes. Prior
to such uses, the net proceeds from the sale of securities will be invested in
certificates of deposit or other highly liquid investments with short-term
maturities. Any specific allocation of the net proceeds of an offering of
securities to a specific purpose will be determined at the time of such offering
and will be described in the related prospectus supplement.

               ACCOUNTING TREATMENT RELATING TO TRUST SECURITIES

     The financial statements of each trust that has issued trust securities
will be consolidated with our financial statements, with the trust preferred
securities of each trust shown on our consolidated financial statements as our
obligated mandatory redemption preferred securities of a consolidated trust. Our
financial statements will include a footnote that discloses, among other things,
that the sole asset of each trust included therein consists of our subordinated
deferrable interest debentures and will specify the designation, principal
amount, interest rate and maturity date of such subordinated deferrable interest
debentures.

              RATIOS OF EARNINGS TO FIXED CHARGES AND EARNINGS TO
              COMBINED FIXED CHARGES AND PREFERRED STOCK DIVIDENDS

     A description of our ratio of earnings to fixed charges or earnings to
combined fixed charges and preferred stock dividends, as applicable on a
consolidated basis, will appear in an applicable prospectus supplement.

                                        4
<PAGE>   58

                        DESCRIPTION OF EQUITY SECURITIES

GENERAL

     Our restated certificate of incorporation provides that the aggregate
number of shares of all classes of stock that we have authority to issue is
552,700,000 shares, consisting of 500,000,000 shares of common stock, 50,000,000
shares of preferred stock and 2,700,000 shares of class A common stock, par
value 33 1/3c per share.

     As of March 31, 1999, our issued and outstanding common stock, class A
common stock and preferred stock was as follows:

<TABLE>
<CAPTION>
                                                                SHARES
                                                                ---------
<S>                                                           <C>
Common Stock................................................  212,573,880
Class A Common Stock........................................      351,497
Preferred Stock:
  $1.19 Cumulative Convertible Preferred Stock, Series A
     ("series A preferred stock")...........................       53,748
  $1.83 Cumulative Convertible Preferred Stock, Series B
     ("series B preferred stock")...........................       60,676
  $5.00 Cumulative Convertible Preferred Stock, Series C
     ("series C preferred stock")...........................       27,714
</TABLE>

     All issued and outstanding shares are fully paid and non-assessable.

PREFERRED STOCK

GENERAL

     Shares of preferred stock may be issued from time to time, in one or more
series, as authorized by our board of directors, with any terms, preferences,
conversion or other rights, voting powers, restrictions, limitations as to
dividends or other distributions, qualifications and terms or conditions of
redemption as are determined by our board of directors and permitted by Delaware
law. At such time as our board of directors determines the terms of the
preferred stock, such terms will be set forth in a certificate of designation to
be filed with the Secretary of State of Delaware. Upon filing, the certificate
of designation will constitute an amendment to the certificate of incorporation
pursuant to the Delaware General Corporation Law.

     The following description of our preferred stock is not complete. You
should look at our certificate of incorporation and by-laws for a complete
description.

TERMS

     The terms of each series of preferred stock will be described in any
prospectus supplement related to such series of preferred stock and may include
the following:

          (1) the title and stated value of such preferred stock;

          (2) the number of shares of such preferred stock offered and the
     offering price and liquidation preference per share of such preferred
     stock;

          (3) the dividend rate(s), period(s) and/or payment date(s) or
     method(s) of calculation thereof applicable to such preferred stock;

          (4) the date from which dividends on such preferred stock shall
     accumulate, if applicable;

          (5) the provision for a sinking fund, if any, for such preferred
     stock;

          (6) the provision for redemption, if applicable, of such preferred
     stock;

                                        5
<PAGE>   59

          (7) any listing of such preferred stock on any securities exchange;

          (8) a discussion of federal tax considerations applicable to such
     preferred stock;

          (9) any voting rights of holders of such preferred stock;

          (10) any other specific terms, preferences, rights, limitations or
     restrictions of such preferred stock;

          (11) the relative ranking and preference of such preferred stock as to
     dividend rights and rights upon liquidation, dissolution or winding up of
     our affairs;

          (12) any limitations on issuance of any series of preferred stock
     ranking senior to or on a parity with such series of preferred stock as to
     dividend rights and rights upon liquidation, dissolution or winding up of
     our affairs; and

          (13) the terms and conditions, if applicable, upon which such
     preferred stock will be convertible into or participate in dividends, if
     any, paid on the common stock, including the conversion price (or manner of
     calculation thereof).

DIVIDENDS

     The holders of the preferred stock of each series shall be entitled to
receive, when, as and if declared by our board of directors, out of our funds
legally available therefor, cash dividends at the annual rate and on such dates
as shall be set forth in the prospectus supplement relating to such series. Each
such dividend shall be paid to the holders of record of shares of such series on
such record date as shall be fixed by our board of directors.

     If dividends are not paid in full or declared in full and a sum set apart
for the payment thereof upon the preferred stock of a series and any other
preferred stock ranking on a parity as to dividends with the preferred stock of
such series, all dividends declared upon shares of preferred stock of such
series and any other preferred stock ranking on a parity as to dividends shall
be declared pro rata. Such pro rata payments will be made so that in all cases,
the amount of dividends declared per share on the preferred stock of such series
and any other preferred stock ranking on a parity as to dividends shall be in
the same proportion as the amount of dividends that would be paid on all shares
of preferred stock of such series and such other parity preferred stock if all
such dividends (including dividends accrued or in arrears) were paid in full.

     Except as provided in the preceding sentence, unless full cumulative
dividends on the preferred stock of a series have been paid or declared in full
and a sum set aside for the payment thereof:

     - no dividends shall be declared or paid or set aside for payment or other
       distribution made upon our common stock, class A common stock or any
       other class or series of our capital stock ranking junior to or on a
       parity with the preferred stock of the applicable series as to dividends
       or liquidation rights; and

     - no common stock, class A common stock or any other class or series of our
       capital stock ranking junior to or on a parity with the preferred stock
       of such series as to dividends or liquidation rights shall be redeemed,
       purchased or otherwise acquired for any consideration (or any payment
       made to or available for a sinking fund for the redemption of any shares
       of such stock) by us or any of our subsidiaries (except by conversion
       into or exchange for our stock ranking junior to the preferred stock of
       the applicable series as to dividends and liquidation rights).

     Unless otherwise stated in the applicable prospectus supplement, no
interest, or sum of money in lieu of interest, will be payable in respect of any
dividend payment or payments on preferred stock of any series which may be in
arrears.

                                        6
<PAGE>   60

     Dividends payable on the preferred stock of a series for any period less
than a full quarterly dividend period shall be computed on the basis of a
360-day year of twelve 30-day months and the actual number of days elapsed in
the period for which payable.

VOTING RIGHTS

     The holders of the preferred stock shall not, except as required by law or
as set forth in the applicable prospectus supplement, have any right or power to
vote on any question or in any proceeding or to be represented at, or to receive
notice of, any meeting of stockholders. On any matters on which the holders of
the preferred stock shall be entitled to vote, they shall be entitled to one
vote for each share held.

     Unless otherwise stated in the applicable prospectus supplement, if six or
more full quarterly dividends (whether consecutive or not) on any series of
preferred stock shall be in arrears, then during the period, which we refer to
herein as the "voting period," the holders of a majority of the outstanding
shares of preferred stock of all series represented in person or by proxy at any
meeting of our stockholders held for the election of directors during such
voting period, shall be entitled, as a class, to the exclusion of the holders of
all other classes of our stock, to elect two of our directors, each share of
preferred stock entitling the holder thereof to one vote.

     Any director who shall have been elected by holders of preferred stock, or
by any director so elected as herein contemplated, may be removed at any time
during a voting period, either for or without cause, by, and only by, the
affirmative votes of the holders of record of a majority of the outstanding
shares of preferred stock of all series given at a special meeting of such
stockholders called for the purpose. Any vacancy thereby created may be filled
during such voting period by the holders of preferred stock of all series,
present in person or represented by proxy at such meeting. Any director elected
by holders of preferred stock, or by any director so elected as herein
contemplated, who dies, resigns or otherwise ceases to be a director shall,
except as otherwise provided in the preceding sentence, be replaced by the
remaining director theretofore elected by the holders of preferred stock. At the
end of the voting period, the holders of preferred stock of all series shall be
automatically divested of all voting power vested in them under this provision
but subject always to the subsequent vesting of voting power in the holders of
preferred stock in the event of any similar cumulated arrearage in payment of
quarterly dividends occurring thereafter. The term of all directors elected
pursuant to this provision shall in all events expire at the end of the voting
period.

     The approval of the holders of at least two-thirds of the then-outstanding
shares of preferred stock of a series will be required to:

     - amend the applicable certificate of designation to adversely change the
       preferences, special rights or powers of the preferred stock of such
       series; or

     - to authorize, create or increase the authorized amount of any class or
       series of our capital stock ranking prior to the preferred stock of such
       series either as to dividend or liquidation rights;

provided, however, that the creation or issuance of any class or series of our
capital stock not ranking prior to the preferred stock of a series as to
dividend or liquidation rights shall not require the consent of the holders of
the preferred stock of such series.

RANKING

     The preferred stock to which any prospectus supplement may relate will rank
pari passu with the outstanding shares of our series A preferred stock, series B
preferred stock and series C preferred stock with respect to dividend rights and
liquidation preference. The preferred stock will rank prior to our common stock
and class A common stock. Without the requisite vote of holders of the preferred
stock, as described above under "Voting Rights," no class or series of capital
stock can be created ranking senior to the preferred stock as to dividend rights
or liquidation preference.

                                        7
<PAGE>   61

LIQUIDATION RIGHTS

     In the event of our liquidation, dissolution or winding up, the holders of
shares of our preferred stock of each series are entitled to receive out of our
assets available for distribution to stockholders, before any distribution of
assets is made to holders of common stock, class A common stock or any other
class or series of our capital stock (including any preferred stock) which is
junior as to liquidation rights to our preferred stock of such series,
liquidating distributions in the amount set forth in the applicable prospectus
supplement, plus dividends accrued and accumulated but unpaid to the date of
such distribution. If, upon our liquidation, dissolution or winding up, the
amounts payable with respect to our preferred stock of such series and any of
our other preferred stock ranking as to any such distribution on a parity with
our preferred stock of such series are not paid in full, the holders of our
preferred stock of such series and of such of our other preferred stock will
share ratably in any such distribution of assets in proportion to the full
respective preferential amounts to which they are entitled. After payment of the
full amount of the liquidating distribution to which they are entitled, the
holders of shares of our preferred stock will not be entitled to any further
participation in any distribution of assets by us. Neither our consolidation or
merger with another corporation nor a sale or transfer of all or part of our
assets for cash or securities shall be considered a liquidation, dissolution or
winding up of us.

REDEMPTION PROVISIONS

     The preferred stock of each series will have such optional or mandatory
redemption terms, if any, as shall be set forth in the applicable prospectus
supplement.

CONVERSION AND EXCHANGE RIGHTS

     The terms and conditions, if any, upon which any series of our preferred
stock is convertible into common stock or exchangeable into debt securities will
be set forth in the applicable prospectus supplement relating to such series of
preferred stock. Such terms will include:

          (1) in the case such series of preferred stock is convertible into
     common stock:

             (a) the number of shares of common stock into which shares of such
        series of preferred stock are convertible;

             (b) the conversion price (or manner of calculation thereof);

             (c) the conversion period;

             (d) provisions as to whether conversion will be at the option of
        the holders of such series of preferred stock or at our option;

             (e) the events requiring an adjustment of the conversion price; and

             (f) provisions affecting conversion in the event of the redemption
        of such series of preferred stock; and

          (2) in the case such series of preferred stock is exchangeable into
     debt securities;

             (a) the principal amount of debt securities into which shares of
        such series of preferred stock are exchangeable;

             (b) the exchange period; and

             (c) provisions as to whether the exchange will be at the option of
        the holders of such series of preferred stock or at our option.

MISCELLANEOUS

     Our preferred stock will have no preemptive rights. All of our preferred
stock, upon payment in full therefor, will be fully paid and nonassessable.

                                        8
<PAGE>   62

COMMON STOCK AND CLASS A COMMON STOCK

DIVIDENDS

     Subject to the preferential rights of the holders of preferred stock, all
issued and outstanding shares of common stock are entitled to participate
equally in dividends when, as and if declared by our board of directors out of
funds legally available for such purposes. Our directors may declare and pay
dividends upon the shares of our capital stock either out of surplus or, if
there is no surplus, out of net profits for the fiscal year in which the
dividend is declared and/or the preceding fiscal year, subject to the
restrictions contained in certain agreements.

     Our board of directors may fix, in advance, a date as the record date for
purposes of determining stockholders entitled to receive dividends. Such date
may not be more than 60 days prior to the payment of such dividends. However, if
no record date is fixed by the board of directors, the record date will be at
the close of business on the day on which our board of directors adopts the
resolution relating to the dividend.

MEETINGS OF STOCKHOLDERS

     A meeting of our stockholders for the election of directors and for the
transaction of any of our other business as may lawfully come before the meeting
is held annually at a date, time and place designated by our board of directors.

     In addition, a special meeting of our stockholders may be called by the
board of directors, the chairman of the board or the president at any time. The
certificate of incorporation provides that any action required or permitted to
be taken at a meeting of stockholders may be taken only at a meeting of
stockholders.

VOTING RIGHTS

     A majority of the voting power of all our outstanding shares entitled to
vote at a meeting of stockholders constitutes a quorum. Except as otherwise
provided by law or by our certificate of incorporation or by-laws, a resolution
can be adopted at a meeting provided a quorum is present.

     The holders of common stock are entitled to one vote per share on all
matters upon which stockholders generally have the right to vote, while holders
of class A common stock are entitled to 100 votes per share on all matters on
which such holders have the right to vote. All shares presently outstanding are
fully paid and non-assessable.

     The shares of common stock do not have cumulative voting rights. At every
meeting of the stockholders called for the election of directors, the holders of
common stock, voting as a class with the holders of series A preferred stock,
series B preferred stock, series C preferred stock and any other series of
preferred stock generally entitled to vote therefor, shall be entitled to elect
one-quarter of the number of directors to be elected at such meeting, and if
one-quarter of such number of directors is not a whole number, then the holders
of common stock, voting as a class with the holders of voting preferred stock,
shall be entitled to elect the next higher whole number of directors to be
elected at such meeting, and the holders of class A common stock shall have no
voting rights with respect to the election of such directors. The holders of
class A common stock, common stock and voting preferred stock, voting as a
single class, shall be entitled to elect the remaining directors to be elected
at such meeting. If, during the interval between annual meetings of stockholders
for the election of directors, the number of directors who have been elected by
either the holders of common stock voting as a class with the holders of voting
preferred stock or by the holders of class A common stock, common stock and
voting preferred stock voting as a class shall, by reason of resignation, death,
retirement, disqualification or removal, be reduced, the vacancy or vacancies in
the directors so created may be filled by a majority vote of the remaining
directors then in office, even if less than a quorum, or by a sole remaining
director. Any director elected by the remaining directors then in office to fill
any vacancy in the directorships designated by the holders of common stock and
voting preferred stock may be removed from office by vote of the holders of a
majority of the shares of common stock voting as a class with the holders of
voting preferred stock, and any director elected by

                                        9
<PAGE>   63

the remaining directors in office to fill any vacancy in the directorships
designated by the holders of class A common stock, common stock and voting
preferred stock may be removed from office by the holders of a majority of the
voting power of the class A common stock, common stock and voting preferred
voting as a class.

     Notice of a stockholders' meeting, stating the place, date, time and the
purpose thereof, must be delivered either personally or by mail to each
stockholder at his address as it appears on our books unless otherwise provided
by law or our certificate of incorporation at least 10 days but not more than 50
days prior to the date set for the meeting. Stockholders may exercise their
voting rights through proxies as provided in our by-laws.

PROVISIONS RELATING TO CONTROL OF COASTAL

     The class A common stock carries certain rights, and our certificate of
incorporation contains certain provisions, which affect the control of us, and
are described below.

          (1) Class A Common Stock

          Each share of class A common stock, which carries the right to cast
     100 votes, may be converted into one share of common stock. The board of
     directors may declare and pay dividends in respect of the class A common
     stock provided that a greater dividend is, at the same time, declared and
     paid in respect of the common stock.

          (2) Board of Directors

             (a) Our certificate of incorporation provides for a board of
        directors consisting of a minimum of three and a maximum of eighteen
        directors to be divided into three classes, with each of the three
        classes required to be as nearly equal as possible, serving staggered
        three-year terms. The effect of this provision is that, at each of our
        annual meetings, approximately one-third of the board of directors is
        elected to succeed those whose terms expire. The total number of
        directors and the number of directors constituting each class may be
        varied, from time to time, by the board of directors within the
        authorized limits.

             (b) Notwithstanding that the maximum number of directors is
        established at eighteen, the rights of any holders of preferred stock or
        any other class or series of stock, other than common stock, to elect a
        specified number of directors are governed by the terms of our
        certificate of incorporation applicable thereto, and such directors
        shall not be classified as described above unless so provided.

             (c) Our directors are also empowered to fill casual vacancies
        occurring on our board. Any director so appointed by our board would
        hold office for the unexpired portion of the term of the director whose
        place he or she had taken. Where our board appoints a director to fill a
        newly created directorship resulting from an increase in the number of
        directors, that director would hold office until the next election of
        the class for which he or she was chosen. If the size of our board was
        increased, the additional director or directors would be apportioned
        among the three classes to make all classes as nearly equal as possible.

             (d) No person, except a person nominated by or on behalf of our
        board, is eligible for election as a director at any annual or special
        meeting of stockholders unless a written request that such person's name
        be placed in nomination is received from a stockholder of record by our
        Secretary not less than 30 days prior to the date fixed for the meeting,
        together with the written consent of such person to serve as a director.

          (3) Meetings of Stockholders

          Stockholder action may be taken only at a stockholders' meeting. Our
     stockholders do not have the power to call a special meeting and it may
     therefore be more difficult for stockholders to take action opposed by our
     board of directors. This may have the effect of deterring persons from
     seeking

                                       10
<PAGE>   64

     to acquire substantial stock positions in or control of us, including an
     attempt to acquire control of us made in response to any attempt by us to
     acquire securities of, or control of, another corporation.

          (4) Business Combinations

          The approval of the holders of 85% of the voting power of our
     outstanding shares of stock is required, in certain circumstances, for the
     adoption or authorization of a business combination with any controlling
     company. A controlling company is an entity which either owns, or is
     controlled by any entity which owns, 20% of the voting power of the
     outstanding shares of our stock. Delaware law provides that, unless the
     certificate of incorporation specifies otherwise, the votes of the holders
     of a majority of the outstanding voting stock are sufficient to approve a
     business combination.

          A proposed business combination will not have to meet the 85% vote
     requirement where certain fair price and other procedural requirements are
     satisfied. These requirements are designed to ensure that the cash or
     market value of any other consideration to be received by our stockholders
     in such business combination is fair, to preserve the rights of our public
     stockholders by ensuring that appropriate representation on our board of
     directors will be maintained, to keep public stockholders fully informed as
     to the advisability of the proposed business combination and to ensure that
     there is no major change in our business or capital structure and no
     reduction in the rate of dividends payable on our stock without the
     approval of the board of directors.

PRE-EMPTIVE RIGHTS

     Neither stockholders nor any other person has any pre-emptive subscription
rights.

LIQUIDATION, DISSOLUTION AND REORGANIZATION

     All shares of common stock and class A common stock rank equally upon our
liquidation or dissolution, after payment of all debts and expenses and
satisfaction of the interests of the holders of any shares of our preferred
stock then outstanding.

     Our certificate of incorporation provides that if a majority in number
representing three-fourths in value of our creditors or class of creditors,
and/or of our stockholders or class of stockholders, as the case may be, agree
to any compromise or arrangement and to any reorganization of us at a meeting
properly called by a Delaware court, such action, if sanctioned by the court,
will be binding on all of our creditors or class of creditors, and/or on all of
our stockholders or class of stockholders, as the case may be, and also on us.

TRANSFERABILITY OF SHARES OF COMMON STOCK AND CLASS A COMMON STOCK

     There are no restrictions in our certificate of incorporation or by-laws on
the transferability of shares of common stock. Shares of class A common stock
are not transferable and upon any attempted transfer or upon death of the holder
thereof are automatically converted into shares of common stock.

                                       11
<PAGE>   65

                      DESCRIPTION OF COMMON STOCK WARRANTS

GENERAL

     We may issue common stock warrants independently or together with any
securities offered by any prospectus supplement and such common stock warrants
may be attached to or separate from such securities. Each series of common stock
warrants will be issued under a separate warrant agreement to be entered into
between us and a bank or trust company, as warrant agent, all as set forth in
the applicable prospectus supplement. The warrant agent will act solely as our
agent in connection with the certificates representing the common stock warrants
and will not assume any obligation or relationship of agency or trust for or
with any holders of common stock warrant certificates or beneficial owners of
common stock warrants.

     The following summaries of certain provisions of the warrant agreement and
common stock warrant certificate are not complete. You should look at the
warrant agreement relating to, and the common stock warrant certificate
representing, a series of common stock warrants.

TERMS

     An applicable prospectus supplement will set forth and describe other
specific terms regarding each series of common stock warrants offered hereby,
including:

          (1) the offering price;

          (2) the number of shares of common stock purchasable upon exercise of
     each such common stock warrant and the price at which such number of shares
     of common stock may be purchased upon such exercise;

          (3) the date on which the right to exercise such common stock warrants
     shall commence and the date on which such right shall expire; and

          (4) any other terms of such common stock warrants.

     The applicable prospectus supplement may also state that any of the terms
set forth herein are inapplicable to such series. Common stock warrants for the
purchase of common stock will be offered and exercisable for U.S. dollars only
and will be in registered form only.

EXERCISE OF COMMON STOCK WARRANTS

     Each common stock warrant will entitle the holder thereof to purchase such
shares of common stock at such exercise price as shall in each case be set forth
in, or calculable from, the prospectus supplement relating to the offered common
stock warrants. After the close of business on the expiration date of each
common stock warrant or such later date to which such expiration date may be
extended by us, unexercised common stock warrants will become void.

     Common stock warrants may be exercised by delivering to the warrant agent
payment as provided in the applicable prospectus supplement of the amount
required to purchase the common stock purchasable upon such exercise, together
with certain information set forth on the reverse side of the common stock
warrant certificate. Upon receipt of such payment and the common stock warrant
certificate properly completed and duly executed at the corporate trust office
of the warrant agent or any other office indicated in the applicable prospectus
supplement, we will, as soon as practicable, issue and deliver the common stock
purchasable upon such exercise. If fewer than all of the common stock warrants
represented by such common stock warrant certificate are exercised, a new common
stock warrant certificate will be issued for the remaining amount of common
stock warrants.

                                       12
<PAGE>   66

AMENDMENTS AND SUPPLEMENTS TO WARRANT AGREEMENT

     The warrant agreement for a series of common stock warrants may be amended
or supplemented without the consent of the holders of the common stock warrants
issued thereunder to effect changes that are not inconsistent with the
provisions of the common stock warrants and that do not adversely affect the
interests of the holders of the common stock warrants.

COMMON STOCK WARRANT ADJUSTMENTS

     Unless otherwise indicated in the applicable prospectus supplement, the
exercise price of, and the number of shares of common stock covered by, a common
stock warrant are subject to adjustment in certain events, including:

          (1) the issuance of common stock as a dividend or distribution on the
     common stock;

          (2) subdivisions and combinations of the common stock;

          (3) the issuance to all holders of common stock of certain rights or
     warrants entitling them to subscribe for or purchase common stock, at less
     than the current market value, as defined in the warrant agreement for such
     series of common stock warrants; and

          (4) the distribution to all holders of common stock of evidences of
     our indebtedness or assets, other than certain cash dividends and
     distributions described below.

     No adjustment in the exercise price of, and the number of shares of common
stock covered by, a common stock warrant will be made for regular quarterly or
other periodic or recurring cash dividends or distributions or for cash
dividends or distributions to the extent paid from retained earnings. No
adjustment will be required unless such adjustment would require a change of at
least one percent in the exercise price and exercise rate then in effect;
provided, however, that any such adjustment not so made will be carried forward
and taken into account in any subsequent adjustment; provided, further, that any
such adjustment not so made shall be made no later than three years after the
occurrence of the event requiring such adjustment to be made or carried forward.
Except as stated above, the exercise price of, and the number of shares of
common stock covered by, a common stock warrant will not be adjusted for the
issuance of common stock or any securities convertible into or exchangeable for
common stock, or securities carrying the right to purchase any of the foregoing.

     In the case of:

          (1) a reclassification or change of the common stock;

          (2) a consolidation or merger involving us; or

          (3) a sale or conveyance to another corporation of our property and
     assets as an entirety or substantially as an entirety,

in each case as a result of which holders of our common stock shall be entitled
to receive stock, securities, other property or assets (including cash) with
respect to or in exchange for such common stock, the holders of the common stock
warrants then outstanding will be entitled thereafter to convert such common
stock warrants into the kind and amount of shares of stock and other securities
or property which they would have received upon such reclassification, change,
consolidation, merger, sale or conveyance had such common stock warrants been
exercised immediately prior to such reclassification, change, consolidation,
merger, sale or conveyance.

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<PAGE>   67

                   DESCRIPTION OF TRUST PREFERRED SECURITIES

     Each trust may issue only one series of trust preferred securities having
terms described in the prospectus supplement relating thereto. The declaration
of each trust authorizes the regular trustees of such trust to cause such trust
to issue one series of trust preferred securities. Each declaration will be
qualified as an indenture under the Trust Indenture Act. The trust preferred
securities will have such terms, including distributions, redemption, voting,
liquidation rights and such other preferred, deferred or other special rights or
such restrictions as shall be set forth in each declaration or made part of each
declaration by the Trust Indenture Act and the Delaware Business Trust Act.

     The prospectus supplement relating to the trust preferred securities of a
trust will include the specific terms of the series of trust preferred
securities being issued, including:

          (1) the distinctive designation of such trust preferred securities;

          (2) the number of trust preferred securities issued by such trust;

          (3) the annual distribution rate, or method of determining such rate,
     for trust preferred securities issued by such trust and the date or dates
     upon which such distributions shall be payable; provided, however, that
     distributions on such trust preferred securities shall be payable on a
     quarterly basis to holders of trust preferred securities as of a record
     date in each quarter during which such trust preferred securities are
     outstanding;

          (4) whether distributions on trust preferred securities issued by such
     trust shall be cumulative, and, in the case of trust preferred securities
     having such cumulative distribution rights, the date(s) or method of
     determining the date(s) from which distributions on trust preferred
     securities issued by such trust shall be cumulative;

          (5) the amount(s) which shall be paid out of the assets of such trust
     to purchase or redeem trust preferred securities issued by such trust and
     the price(s) at which, the period(s) within which, and the terms and
     conditions upon which, trust preferred securities issued by such trust
     shall be purchased or redeemed, in whole or in part, pursuant to such
     obligation;

          (6) the voting rights, if any, of trust preferred securities issued by
     such trust in addition to those required by law, including any requirement
     for the approval by the holders of trust preferred securities, or of trust
     preferred securities issued by one or more trusts, or of both, as a
     condition to specified action or amendments to the declaration of such
     trust; and

          (7) any other relevant rights, preferences, privileges, limitations or
     restrictions of trust preferred securities issued by such trust not
     inconsistent with the declaration of such trust or with applicable law.

     All trust preferred securities offered hereby will be guaranteed by Coastal
as described under "Description of Trust Preferred Securities Guarantees" below.
Any applicable United States federal income tax considerations applicable to any
offering of trust preferred securities will be described in the prospectus
supplement relating thereto.

     In connection with the issuance of trust preferred securities, each trust
will issue one series of trust common securities. The declaration of each trust
authorizes the regular trustees of such trust to issue on behalf of such trust
one series of trust common securities having such terms including distributions,
redemption, voting, liquidation rights or such restrictions as shall be set
forth therein. The terms of the trust common securities issued by a trust will
be substantially identical to the terms of the trust preferred securities issued
by such trust and the trust common securities will rank pari passu, and payments
will be made thereon pro rata, with the trust preferred securities except that,
upon an event of default under the declaration, the rights of the holders of the
trust common securities to payment in respect of distributions and payments upon
liquidation, redemption and otherwise will be subordinated to the rights of the
holders of the trust preferred securities. All of the trust preferred securities
of a trust will be directly or indirectly owned by Coastal.
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<PAGE>   68

              DESCRIPTION OF TRUST PREFERRED SECURITIES GUARANTEES

GENERAL

     The following is a summary of information concerning the guarantees of the
trust preferred securities, which we refer to as the trust preferred securities
guarantees. The trust preferred securities guarantees will be executed and
delivered by Coastal for the benefit of the holders from time to time of trust
preferred securities. Each trust preferred securities guarantee will be
qualified as an indenture under the Trust Indenture Act of 1939, as amended. The
Bank of New York will act as indenture trustee under each trust preferred
securities guarantee and will be referred to herein as the guarantee trustee.
The terms of each trust preferred securities guarantee will be those set forth
in such trust preferred securities guarantee and the prospectus supplement
relating thereto and those made part of such trust preferred securities
guarantee by the Trust Indenture Act of 1939, as amended. Each trust preferred
securities guarantee will be held by the guarantee trustee for the benefit of
the holders of the trust preferred securities of the applicable trust.

     The following summary does not purport to be complete and is subject in all
respects to the provisions of, and is qualified in its entirety by reference to,
the form of trust preferred securities guarantee, which is filed as an exhibit
to the registration statement of which this prospectus forms a part, the Trust
Indenture Act of 1939, as amended, and the prospectus supplement relating
thereto.

TERMS

     We will irrevocably and unconditionally agree to pay in full the guarantee
payments described below, except to the extent paid by the trust, to the holders
of the trust preferred securities issued by a trust, as and when due, regardless
of any defense, right to set-off or counterclaim which such trust may have or
assert. The following payments are referred to herein as guarantee payments and,
with respect to trust preferred securities issued by a trust, to the extent not
paid by such trust, will be subject to the trust preferred securities guarantee
(without duplication):

          (1) any accrued and unpaid distributions which are required to be paid
     on such trust preferred securities, to the extent such trust shall have
     funds available therefor;

          (2) the redemption price, including all accrued and unpaid
     distributions to the redemption date, to the extent such trust has funds
     available therefor, with respect to any trust preferred securities called
     for redemption by such trust; and

          (3) upon a voluntary or involuntary termination, dissolution or
     winding-up of such trust, other than in connection with the distribution of
     subordinated deferrable interest debentures to the holders of trust
     preferred securities in exchange for their trust preferred securities, the
     lesser of:

             (a) the aggregate of the liquidation amount and all accrued and
        unpaid distributions on such trust preferred securities to the date of
        payment, and

             (b) the amount of assets of such trust remaining available for
        distribution to holders of such trust preferred securities in
        liquidation of such trust.

     Our obligation to make a guarantee payment may be satisfied by direct
payment of the required amounts by us to the holders of trust preferred
securities or by causing the applicable trust to pay such amounts to such
holders.

     Each trust preferred securities guarantee will be a full and unconditional
guarantee with respect to the trust preferred securities issued by the
applicable trust from the time of issuance of such trust preferred securities,
but will not apply to any payments or distributions when the trust does not have
sufficient funds available to make such payments or distributions. If we do not
make interest payments on the subordinated deferrable interest debentures
purchased by a trust, such trust will not pay distributions on the trust
preferred securities issued by such trust and will not have funds available
therefor. See "Description of Subordinated Deferrable Interest
Debentures -- Certain Covenants."

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<PAGE>   69

     We have also agreed separately to guarantee the obligations of the trusts
with respect to the trust common securities to the same extent as the trust
preferred securities guarantee, except that upon the occurrence and during the
continuation of an event of default under the declaration, holders of trust
preferred securities shall have priority over holders of trust common securities
with respect to distributions and payments on liquidation, redemption or
otherwise.

CERTAIN COVENANTS OF COASTAL

     We will covenant that, so long as any trust preferred securities issued by
the applicable trust remain outstanding, if any event constituting an event of
default shall exist under such trust preferred securities guarantee or the
declaration of such trust, then we will not:

          (a) declare or pay any dividend on, make any distributions with
     respect to, or redeem, purchase, acquire or make a liquidation payment with
     respect to, any of our capital stock;

          (b) make any payment of interest, principal or premium, if any, on or
     repay, repurchase or redeem any of our debt securities which rank pari
     passu with or junior to the subordinated deferrable interest debentures;
     and

          (c) make any guarantee payments, other than pursuant to the trust
     preferred securities guarantees, with respect to the foregoing.

     However, the foregoing restriction will not apply to any dividend,
redemption, liquidation, interest, principal or guarantee payment we make where
the payment is made by way of securities, including capital stock, that rank
junior to the securities on which such dividend, redemption, interest, principal
or guarantee payment is being made.

MODIFICATION OF THE TRUST PREFERRED SECURITIES GUARANTEES; BINDING NATURE OF
GUARANTEES

     Except with respect to any changes which do not adversely affect the rights
of holders of trust preferred securities, in which case no vote will be
required, each trust preferred securities guarantee may be amended only with the
prior approval of the holders of not less than a majority in aggregate
liquidation amount of the outstanding trust preferred securities issued by the
applicable trust. The manner of obtaining any such approval of holders of such
trust preferred securities will be as set forth in an accompanying prospectus
supplement. All guarantees and agreements contained in a trust preferred
securities guarantee shall bind our successors, assigns, receivers, trustees and
representatives and shall inure to the benefit of the holders of the trust
preferred securities then outstanding of the applicable trust.

TERMINATION

     Each trust preferred securities guarantee will terminate as to the trust
preferred securities issued by the applicable trust upon full payment of the
redemption price of all trust preferred securities of such trust, upon
distribution of the subordinated deferrable interest debentures held by such
trust to the holders of the trust preferred securities of such trust in
liquidation of such holders' interest in such trust preferred securities or upon
full payment of the amounts payable in accordance with the declaration of such
trust upon liquidation of such trust. Each trust preferred securities guarantee
will continue to be effective or will be reinstated, as the case may be, if at
any time any holder of trust preferred securities issued by the applicable trust
must restore payment of any sums paid under such trust preferred securities or
such trust preferred securities guarantee.

EVENTS OF DEFAULT

     An event of default under a trust preferred securities guarantee will occur
upon our failure to perform any of our payment or other obligations thereunder.

     The holders of a majority in liquidation amount of the trust preferred
securities relating to such trust preferred securities guarantee have the right
to direct the time, method and place of conducting any
                                       16
<PAGE>   70

proceeding for any remedy available to the guarantee trustee in respect of such
trust preferred securities guarantee or to direct the exercise of any trust or
power conferred upon the guarantee trustee under such trust preferred securities
guarantee. If the guarantee trustee fails to enforce such trust preferred
securities guarantee, any holder of trust preferred securities relating to such
trust preferred securities guarantee may institute a legal proceeding directly
against us to enforce the guarantee trustee's rights under such trust preferred
securities guarantee, without first instituting a legal proceeding against the
relevant trust, the guarantee trustee or any other person or entity. In
addition, any record holder of trust preferred securities relating to such trust
preferred securities guarantee shall have the right, which is absolute and
unconditional, to proceed directly against us to obtain guarantee payments
thereunder, without first waiting to determine if the guarantee trustee has
enforced such trust preferred securities guarantee or instituting a legal
proceeding against the trust which issued such trust preferred securities, the
guarantee trustee or any other person or entity.

STATUS OF THE TRUST PREFERRED SECURITIES GUARANTEES

     The trust preferred securities guarantees will constitute our unsecured
obligations and will rank:

          (1) subordinate and junior in right of payment to all of our other
     liabilities,

          (2) pari passu with the most senior preferred or preference stock now
     or hereafter issued by us and with any guarantee now or hereafter entered
     into by us in respect of any preferred or preference stock of any of our
     subsidiaries or affiliates, and

          (3) senior to our common stock.

     The terms of the trust preferred securities provide that each holder of
trust preferred securities issued by such trust by acceptance thereof agrees to
the subordination provisions and other terms of the trust preferred securities
guarantee relating thereto.

INFORMATION CONCERNING THE GUARANTEE TRUSTEE

     The guarantee trustee, prior to the occurrence of a default with respect to
a trust preferred securities guarantee, undertakes to perform only such duties
as are specifically set forth in such trust preferred securities guarantee and,
after default, shall exercise the same degree of care as a prudent individual
would exercise in the conduct of his or her own affairs. Subject to such
provisions, the guarantee trustee is under no obligation to exercise any of the
powers vested in it by the trust preferred securities guarantee at the request
of any holder of trust preferred securities, unless offered reasonable indemnity
against the costs, expenses and liabilities which might be incurred thereby.

     We and certain of our affiliates maintain deposit accounts and banking
relationships with the guarantee trustee. The guarantee trustee may serve as
trustee under other indentures pursuant to which our unsecured debt securities
may be issued.

GOVERNING LAW

     The trust preferred securities guarantees will be governed by and construed
in accordance with the internal laws of the State of New York.

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<PAGE>   71

                         DESCRIPTION OF DEBT SECURITIES

GENERAL

     We may issue debt securities from time to time in one or more series, under
one or more indentures, each dated as of a date on or prior to the issuance of
the debt securities to which it relates. Senior debt securities and subordinated
debt securities may be issued pursuant to separate indentures, a senior
indenture and a subordinated indenture, respectively, in each case between us
and Harris Trust and Savings Bank, as trustee. The form of such indentures have
been filed as an exhibit to the registration statement of which this prospectus
is a part, subject to such amendments or supplements as may be adopted from time
to time. The senior indenture and the subordinated indenture, as amended or
supplemented from time to time, are sometimes referred to individually as an
"indenture" and collectively as the "indentures." Each indenture will be subject
to and governed by the Trust Indenture Act of 1939, as amended. The aggregate
principal amount of debt securities which may be issued under each indenture
will be unlimited and each indenture will set forth the specific terms of any
series of debt securities or provide that such terms shall be set forth in, or
determined pursuant to, an authorizing resolution, as defined in the applicable
prospectus supplement, and/or a supplemental indenture, if any, relating to such
series.

     The statements made below relating to the debt securities and the
indentures are summaries of the anticipated provisions thereof, do not purport
to be complete and are subject to, and are qualified in their entirety by
reference to, all of the provisions of the applicable indenture and any
applicable U.S. federal income tax consideration as well as any applicable
modifications of or additions to the general terms described below in the
applicable prospectus supplement.

TERMS

     The debt securities will be our unsecured obligations.

     The senior debt securities will rank pari passu in right of payment with
all our other unsecured and unsubordinated indebtedness.

     The subordinated debt securities will be subordinated in right of payment
to the prior payment in full of all our senior indebtedness, which is defined in
the section called "Ranking of debt securities" below.

     The specific terms of each series of debt securities will be set forth in
the applicable prospectus supplement relating thereto, including the following,
as applicable:

          (1) the title of such debt securities and whether such debt securities
     are senior debt securities or subordinated debt securities;

          (2) the aggregate principal amount of such debt securities and any
     limit on such aggregate principal amount;

          (3) the price (expressed as a percentage of the principal amount
     thereof) at which such debt securities will be issued and, if other than
     the principal amount thereof, the portion of the principal amount thereof
     payable upon declaration of acceleration of the maturity thereof, or, if
     applicable, the portion of the principal amount of such debt securities
     that is convertible into common stock or the method by which any such
     portion shall be determined;

          (4) if convertible into common stock, the terms on which such debt
     securities are convertible, including the initial conversion price, the
     conversion period, any events requiring an adjustment of the applicable
     conversion price and any requirements relating to the reservation of such
     shares of common stock for purposes of conversion;

          (5) the date(s), or the method for determining such date or dates, on
     which the principal of such debt securities will be payable and, if
     applicable, the terms on which such maturity may be extended;

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<PAGE>   72

          (6) the rate(s) (which may be fixed or floating), or the method by
     which such rate or rates shall be determined, at which such debt securities
     will bear interest, if any;

          (7) the date(s), or the method for determining such date or dates,
     from which any such interest will accrue, the dates on which any such
     interest will be payable, the record dates for such interest payment dates,
     or the method by which such dates shall be determined, the persons to whom
     such interest shall be payable, and the basis upon which interest shall be
     calculated if other than that of a 360-day year of twelve 30-day months;

          (8) the place(s) where the principal of and interest, if any, on such
     debt securities will be payable, where such debt securities may be
     surrendered for registration of transfer or exchange and where notices or
     demands to or upon us in respect of such debt securities and the applicable
     indenture may be served;

          (9) the period(s), if any, within which, the price or prices at which
     and the other terms and conditions upon which such debt securities may,
     pursuant to any optional or mandatory redemption provisions, be redeemed,
     as a whole or in part, at our option;

          (10) our obligation, if any, to redeem, repay or purchase such debt
     securities pursuant to any sinking fund (as defined in the applicable
     indenture) or analogous provision or at the option of a holder thereof, and
     the period or periods within which, the price or prices at which and the
     other terms and conditions upon which such debt securities will be
     redeemed, repaid or purchased, as a whole or in part, pursuant to such
     obligations;

          (11) if other than U.S. dollars, the currency or currencies in which
     the principal of and interest, if any, on such debt securities are
     denominated and payable, which may be a foreign currency or units of two or
     more foreign currencies or a composite currency or currencies, and the
     terms and conditions relating thereto;

          (12) whether the amount of payments of principal of or interest, if
     any, on such debt securities may be determined with reference to an index,
     formula or other method (which index, formula or method may, but need not
     be, based on the yield on or trading price of other securities, including
     United States Treasury securities, or on a currency, currencies, currency
     unit or units, or composite currency or currencies) and the manner in which
     such amounts shall be determined;

          (13) whether the principal of or interest, if any, on the debt
     securities of the series are to be payable, at our election or a holder
     thereof, in a currency or currencies, currency unit or units or composite
     currency or currencies other than that in which such debt securities are
     denominated or stated to be payable and the period or periods within which,
     and the terms and conditions upon which, such election may be made;

          (14) provisions, if any, granting special rights to the holders of
     debt securities of the series upon the occurrence of such events as may be
     specified;

          (15) any deletions from, modifications of or additions to the events
     of default or our covenants with respect to debt securities of the series,
     whether or not such events of default or covenants are consistent with the
     events of default or covenants described herein;

          (16) whether debt securities of the series are to be issuable
     initially in temporary global form and whether any debt securities of the
     series are to be issuable in permanent global form and, if so, whether
     beneficial owners of interests in any such security in permanent global
     form may exchange such interests for debt securities of such series and of
     like tenor of any authorized form and denomination and the circumstances
     under which any such exchanges may occur, if other than in the manner
     provided in the applicable indenture, and, if debt securities of the series
     are to be issuable as a global security, the identity of the depository for
     such series;

          (17) the applicability, if any, of the defeasance and covenant
     defeasance provisions of the applicable indenture to the debt securities of
     the series; and

                                       19
<PAGE>   73

          (18) any other terms of the series (which terms shall not be
     inconsistent with the provisions of the indenture under which the debt
     securities are issued).

     If the applicable prospectus supplement provides, the debt securities may
be issued at a discount below their principal amount and provide for less than
the entire principal amount thereof to be payable upon declaration of
acceleration of the maturity thereof. In such cases, all material U.S. federal
income tax considerations will be described in the applicable prospectus
supplement.

     Except as may be set forth in the applicable prospectus supplement, the
debt securities will not contain any provisions that would limit our ability to
incur indebtedness or that would afford holders of debt securities protection in
the event of a highly leveraged transaction involving us or in the event of a
change of control. The applicable prospectus supplement will contain information
with respect to any deletions from, modifications of or additions to the events
of default or covenants described below, including any addition of a covenant or
other provision providing event risk or similar protection.

DENOMINATION, INTEREST, REGISTRATION AND TRANSFER

     We will issue the debt securities of each series only in registered form,
without coupons, in denominations of $1,000, or in such other currencies or
denominations as may be set forth in the applicable indenture or specified in,
or pursuant to, an authorizing resolution and/or supplemental indenture, if any,
relating to such series of debt securities.

     The principal of and interest, if any, on any series of debt securities
will be payable at the corporate trust office of the trustee, the address of
which will be stated in the applicable prospectus supplement. However, at our
option, interest payment may be made by check mailed to the address of the
person entitled thereto as it appears in the applicable register for such debt
securities.

     Subject to certain limitations imposed upon debt securities issued in
book-entry form, the debt securities of any series:

     - will be exchangeable for any authorized denomination of other debt
       securities of the same series and of a like aggregate principal amount
       and tenor upon surrender of such debt securities at the trustee's
       corporate trust office or at the office of any registrar designated by us
       for such purpose; and

     - may be surrendered for registration of transfer or exchange thereof at
       the corporate trust office of the trustee or at the office of any
       registrar designated by us for such purpose.

     No service charge will be made for any registration of transfer or
exchange, but we may require payment of a sum sufficient to cover any tax or
other governmental charge payable in connection with certain transfers and
exchanges. We may act as registrar and may change any registrar without notice.

CERTAIN COVENANTS

     The applicable prospectus supplement will describe any material covenants
in respect of a series of debt securities that are not described in this
prospectus. Unless otherwise indicated in the applicable prospectus supplement,
senior debt securities will include the covenants described below.

  Generally Used Definitions

     The following are terms used in the covenants described below which have
specific meanings in the indenture relating to the particular series of debt
securities.

     "attributable debt" will mean, with respect to any sale and leaseback
transaction as of any particular time, the present value, discounted at the rate
of interest implicit in the terms of the lease, of the obligations of the lessee
under such lease for net rental payments during the remaining term of the lease,
including any period for which such lease has been extended or may, at our
option, be extended.

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<PAGE>   74

     "consolidated net tangible assets" will mean our and our subsidiaries'
total assets appearing on a consolidated balance sheet, less, without
duplication:

          (1) current liabilities;

          (2) reserves for estimated rate refunds pending the outcome of a rate
     proceeding to the extent such refunds have not been finally determined;

          (3) all intangible assets; and

          (4) deferred income tax assets.

     "funded debt" will mean all:

          (1) indebtedness maturing one year or more from the date of the
     creation thereof, all indebtedness directly or indirectly renewable or
     extendible, at the option of the debtor, by its terms or by the terms of
     any instrument or agreement relating thereto, to a date one year or more
     from the date of the creation thereof; and

          (2) all indebtedness under a revolving credit or similar agreement
     obligating the lender or lenders to extend credit over a period of one year
     or more, even though such indebtedness may also conform to the definition
     of short-term borrowing, as it may be defined in the applicable indenture.

     "indebtedness" will mean:

          (1) any liability of any person;

             (a) for borrowed money;

             (b) evidenced by a note, debenture or similar instrument (including
        a purchase money obligation) given in connection with the acquisition of
        any property or assets (other than inventory or similar property
        acquired in the ordinary course of business), including securities; or

             (c) for the payment of money relating to a capitalized lease
                 obligation;

          (2) any guarantee by any person of any liability of others described
              in the preceding clause (1); and

          (3) any amendment, renewal, extension or refunding of any liability of
              the types referred to in clauses (1) and (2) above.

     "lien" will mean any mortgage, lien, pledge, charge or other security
interest or encumbrance of any kind.

     "principal domestic property" will mean any property, plant, equipment or
facility of ours which is located in the United States or any territory or
political subdivision thereof, except any property which our board of directors
or management shall determine to be not material to the business or our and our
subsidiaries' operations, taken as a whole.

     "sale and leaseback transaction" will mean a sale or transfer of any of our
principal domestic properties, with us taking back a lease of such principal
domestic property.

     "significant subsidiary" will mean a subsidiary, including its
subsidiaries, which meets any of the following conditions:

          (1) our and our subsidiaries' investments in and advances to the
     subsidiary exceed 10 percent of our and our subsidiaries' total assets
     consolidated as of the end of any two of the three most recently completed
     fiscal years;

          (2) our and our subsidiaries' proportionate share of the subsidiary's
     total assets exceeds 10 percent of our and our subsidiaries' total assets
     consolidated as of the end of any two of the three most recently completed
     fiscal years; or
                                       21
<PAGE>   75

          (3) our and our other subsidiaries' equity in the income from
     continuing operations before income taxes, extraordinary items and
     cumulative effect of a change in accounting principles of the subsidiary
     exceeds 10 percent of our and our subsidiaries' consolidated income as of
     the end of any two of the three most recently completed fiscal years.

     "stated maturity" when used with respect to any security or any installment
of interest thereon will mean the date specified in such security as the fixed
date on which the principal of such security or such installment of interest is
due and payable.

     "subsidiary" will mean:

          (1) a corporation a majority of whose capital stock with voting power,
     under ordinary circumstances, to elect directors is at the time, directly
     or indirectly, owned by us, by us and our subsidiary or subsidiaries or by
     our subsidiary or subsidiaries; or

          (2) any person other than a corporation in which we, our subsidiary or
     subsidiaries or we and our subsidiary or subsidiaries, directly or
     indirectly, at the date of determination thereof has at least majority
     ownership interest;

provided, however, that no corporation shall be deemed a subsidiary until we,
our subsidiary or subsidiaries, or we and our subsidiary or subsidiaries acquire
more than 50% of the outstanding voting stock thereof and have elected a
majority of its board of directors.

  Restrictions on Liens

     We will not incur, create, assume or otherwise become liable with respect
to any indebtedness secured by a lien, or guarantee any indebtedness with a
guarantee which is secured by a lien, on any principal domestic property or any
shares of stock or indebtedness of any significant subsidiary, without
effectively providing that the debt securities of each series (together with, if
we shall so determine, any other indebtedness then existing or thereafter
created ranking equally with the debt securities of each series) shall be
secured equally and ratably with (or, at our option, prior to) such secured
indebtedness, so long as such secured indebtedness shall be so secured;
provided, however, that this covenant will not apply to indebtedness secured by:

          (1) liens existing on the date of the indenture;

          (2) liens in favor of governmental bodies to secure progress, advance
     or other payments;

          (3) liens existing on property, shares of stock or indebtedness at the
     time of acquisition thereof (including acquisition through lease, merger or
     consolidation) or liens to secure the payment of all or any part of the
     purchase price thereof or the cost of construction, installation,
     renovation, improvement or development thereon or thereof or to secure any
     indebtedness incurred prior to, at the time of, or within 360 days after
     the later of the acquisition, completion of such construction,
     installation, renovation, improvement or development or the commencement of
     full operation of such property or within 360 days after the acquisition of
     such shares or indebtedness for the purpose of financing all or any part of
     the purchase price thereof;

          (4) liens securing indebtedness in an aggregate amount which, at the
     time of incurrence and together with all outstanding attributable debt in
     respect of sale and leaseback transactions permitted by clause (2) in the
     "Restrictions on Sales and Leasebacks" covenant, does not exceed ten
     percent of our consolidated net tangible assets;

          (5) liens securing indebtedness other than funded debt; and

          (6) any extension, renewal or replacement (or successive extensions,
     renewals or replacements), as a whole or in part, of any lien referred to
     in the foregoing clauses (1) through (5) inclusive; provided that such
     extension, renewal or replacement of such lien is limited to all or any
     part of the same property, shares of stock or indebtedness that secured the
     lien extended, renewed or replaced

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<PAGE>   76

     (plus improvements on such property), and that such secured indebtedness at
     such time is not increased.

  Restrictions on Sales and Leasebacks

     We will not enter into any sale and leaseback transaction, unless:

          (1) the principal domestic property is sold within 360 days from the
     date of acquisition of such principal domestic property or the date of the
     completion of construction or commencement of full operations of such
     principal domestic property, whichever is later; or

          (2) within 120 days after such sale we apply or cause to be applied to
     the retirement of funded debt of our or of any of our subsidiaries (other
     than our funded debt which by its terms or the terms of the instrument
     pursuant to which it was issued is subordinate in right of payment to the
     debt securities of each series) an amount not less than the greater of (A)
     the net proceeds of the sale of such principal domestic property or (B) the
     fair value (as determined in any manner approved by our board of directors)
     of such principal domestic property.

     The provisions of this covenant shall not prevent a sale and leaseback
transaction if:

          (1) the lease entered into by us in connection therewith is for a
     period, including renewals, of not more than 36 months; or

          (2) we would, at the time of entering into such sale and leaseback
     transaction, be entitled, without equally and ratably securing the debt
     securities, to create or assume a lien on such principal domestic property
     securing indebtedness in an amount at least equal to the attributable debt
     in respect of such sale and leaseback transaction pursuant to clause (4)
     above in the "Restrictions on Liens" covenant.

MERGER, CONSOLIDATION OR SALE OF ASSETS

     We shall not consolidate with or merge with or into any other corporation
or transfer all or substantially all of its property and assets as an entirety
to any person, unless:

          (1) either we shall be the continuing person, or the person (if other
     than us) formed by such consolidation or into which we are merged or to
     which all or substantially all of our properties and assets as an entirety
     are transferred is a corporation organized and existing under the laws of
     the United States or any State thereof or the District of Columbia which
     expressly assumes all of our obligations under each series of debt
     securities and the indenture with respect to each such series; and

          (2) immediately before and immediately after giving effect to such
     transaction, no event of default and no event which, after notice or
     passage of time or both, would become an event of default shall have
     occurred and be continuing.

     Notwithstanding the foregoing, any subsidiary may consolidate with, merge
with or into or transfer all or part of its properties and assets to us or any
of our other subsidiaries.

RANKING OF DEBT SECURITIES

  Senior debt securities

     The senior debt securities will be our unsecured senior obligations and
will:

     - rank pari passu in right of payment with all our other senior
       indebtedness, which term is defined below under "Subordinated debt
       securities";

     - be effectively subordinated in right of payment to all our secured
       indebtedness to the extent of the value of the assets securing such
       indebtedness; and

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<PAGE>   77

     - be effectively subordinated to all of our subsidiaries' indebtedness and
       all mandatory redemption preferred stock of our subsidiaries.

     Except as otherwise set forth in the applicable senior indenture or
specified in an authorizing resolution and/or supplemental indenture, if any,
relating to a series of senior debt securities to be issued, there will be no
limitations in any senior indenture on the amount of additional indebtedness
which may rank pari passu with the senior debt securities or on the amount of
indebtedness, secured or otherwise, which may be incurred or preferred stock
which may be issued by any of our subsidiaries; provided, however, that the
incurrence of secured indebtedness by us is subject to the limitations set forth
in the "Restrictions on Liens" covenant.

  Subordinated debt securities

     The subordinated debt securities will be our unsecured obligations. Unless
otherwise provided in the applicable prospectus supplement, the payment of
principal of, interest on and all other amounts owing in respect of the
subordinated debt securities will be subordinated in right of payment to the
prior payment in full in cash of principal of, interest on and all other amounts
owing in respect of all of our senior indebtedness. Upon any payment or
distribution of our assets of any kind or character, whether in cash, property
or securities, to creditors upon any total or partial liquidation, dissolution,
winding up, reorganization, assignment for the benefit of creditors or
marshaling of our assets or in a bankruptcy, reorganization, insolvency,
receivership or other similar proceeding relating to us or our property, whether
voluntary or involuntary, all principal of, interest on and all other amounts
due or to become due shall be paid, first, to all senior indebtedness in full in
cash, or such payment duly provided for to the satisfaction of the holders of
senior indebtedness, before any payment or distribution of any kind or character
is made on account of any principal of, interest on or other amounts owing in
respect of the subordinated debt securities, or for the acquisition of any of
the subordinated debt securities for cash, property or otherwise.

     If any default occurs and is continuing in the payment when due, whether at
maturity, upon any redemption, by declaration or otherwise, of any principal of,
interest on, unpaid drawings for letters of credit issued in respect of, or
regularly accruing fees with respect to, any senior indebtedness, no payment of
any kind or character shall be made by or on behalf of us or any other person on
our or their behalf with respect to any principal of, interest on or other
amounts owing in respect of the subordinated debt securities or to acquire any
of the subordinated debt securities for cash, property or otherwise.

     If any other event of default occurs and is continuing with respect to any
senior indebtedness, as such event of default is defined in the instrument
creating or evidencing such senior indebtedness, permitting the holders of such
senior indebtedness then outstanding to accelerate the maturity thereof and if
the representative (as defined in the applicable indenture) for the respective
issue of senior indebtedness gives written notice of the event of default to the
trustee (a "default notice"), then, unless and until all events of default have
been cured or waived or have ceased to exist or the trustee receives notice from
the representative for the respective issue of senior indebtedness terminating
the blockage period (as defined below), during the 180 days after the delivery
of such default notice (the "blockage period"), neither we nor any other person
on its behalf shall:

          (1) make any payment of any kind or character with respect to any
     principal of, interest on or other amounts owing in respect of the
     subordinated debt securities; or

          (2) acquire any of the subordinated debt securities for cash, property
     or otherwise.

     Notwithstanding anything herein to the contrary, in no event will a
blockage period extend beyond 180 days from the date the payment on the
subordinated debt securities was due and only one such blockage period may be
commenced within any 360 consecutive days. No event of default which existed or
was continuing on the date of the commencement of any blockage period with
respect to the senior indebtedness shall be, or be made, the basis for
commencement of a second blockage period by the representative of such senior
indebtedness whether or not within a period of 360 consecutive days unless such
event of default shall have been cured or waived for a period of not less than
90 consecutive days (it
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<PAGE>   78

being acknowledged that any subsequent action, or any breach of any financial
covenants for a period commencing after the date of commencement of such
blockage period that, in either case, would give rise to an event of default
pursuant to any provisions under which an event of default previously existed or
was continuing shall constitute a new event of default for this purpose).

     The subordinated indentures will not restrict the amount of our or our
subsidiaries' senior indebtedness or other indebtedness. As a result of the
foregoing provisions, in the event of our insolvency, holders of the
subordinated debt securities may recover ratably less than our general
creditors.

     "senior indebtedness" will be defined in each subordinated indenture as
indebtedness, whether outstanding on the date of issue of any subordinated debt
securities or thereafter created, incurred, assumed or guaranteed by us, other
than the following:

          (1) any indebtedness as to which, by the terms of the instrument
     creating or evidencing such indebtedness, it is expressly provided that
     such indebtedness is subordinated in right of payment to all of our
     indebtedness not expressly subordinated to such indebtedness;

          (2) any indebtedness which, by its terms, expressly refers to the
     subordinated debt securities and states that such indebtedness shall not be
     senior, shall be pari passu or shall be subordinated in right of payment to
     the subordinated debt securities;

          (3) the subordinated debt securities of the same or another series;
     and

          (4) indebtedness of or amounts owed by us for compensation to
     employees, or for goods, materials and services purchased in the ordinary
     course of business.

DISCHARGE

     We generally may terminate our obligations under any series of debt
securities and the indenture with respect to such series, at any time:

          (1) by delivering all outstanding debt securities of such series to
     the trustee for cancellation and paying all sums payable by it under such
     debt securities and the indenture with respect to such series; or

          (2) after giving notice to the trustee of our intention to defease all
     of the debt securities of such series, by irrevocably depositing with the
     trustee or a paying agent

             (a) in the case of any debt securities of any series denominated in
        U.S. dollars, cash or U.S. government obligations sufficient to pay all
        principal of and interest on such debt securities; and

             (b) in the case of any debt securities of any series denominated in
        any currency other than U.S. dollars, an amount of the applicable
        currency in which the debt securities are denominated sufficient to pay
        all principal of and interest on such debt securities.

However, if the irrevocable deposit pursuant to (2) above is to be made on or
prior to one year from the stated maturity for payment of principal of such
series of debt securities, we shall be required to deliver to the trustee either
an opinion of counsel with no material qualifications or a favorable ruling of
the Internal Revenue Service, in either case to the effect that holders of such
debt securities:

          (1) will not recognize income, gain or loss for federal income tax
     purposes as a result of such deposit (and the defeasance contemplated in
     connection therewith); and

          (2) will be subject to federal income tax on the same amounts and in
     the same manner and at the same time as would have been the case if such
     deposit and defeasance had not occurred.

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<PAGE>   79

MODIFICATION AND WAIVER

     We and the trustee may modify and amend the indenture with the consent of
the holders of not less than a majority in principal amount of the outstanding
debt securities of all series affected thereby (voting as a single class);
provided, however, that such modification or amendment may not, without the
consent of each holder of the debt securities affected thereby:

          (1) change the stated maturity of the principal of or any installment
     of interest with respect to the debt securities;

          (2) reduce the principal amount of, or the rate of interest on, the
     debt securities;

          (3) change the currency of payment of principal of or interest on the
     debt securities;

          (4) impair the right to institute suit for the enforcement of any
     payment on or with respect to the debt securities;

          (5) reduce the above-stated percentage of holders of the debt
     securities of any series necessary to modify or amend the indenture
     relating to such series;

          (6) modify the foregoing requirements or reduce the percentage of
     outstanding debt securities necessary to waive any covenant or past
     default;

          (7) in the case of any subordinated indenture, modify the
     subordination provisions thereof in a manner adverse to the holders of
     subordinated debt securities of any series then outstanding; or

          (8) in the case of any convertible debt securities, adversely affect
     the right to convert the debt securities into common stock in accordance
     with the provisions of the applicable indenture.

     Holders of not less than a majority in principal amount of the outstanding
debt securities of all series affected thereby (voting as a single class) may
waive certain past defaults and may waive compliance by us with any provision of
the indenture relating to such debt securities (subject to the immediately
preceding sentence); provided, however, that:

          (1) without the consent of each holder of debt securities affected
     thereby, no waiver may be made of a default in the payment of the principal
     of or interest on any debt security; and

          (2) only the holders of a majority in principal amount of debt
     securities of a particular series may waive compliance with a provision of
     the indenture relating to such series or the debt securities of such series
     having applicability solely to such series.

EVENTS OF DEFAULT AND NOTICE THEREOF

     The following events are "events of default" with respect to any series of
debt securities issued thereunder:

          (1) failure to pay interest on any debt securities of such series
     within 30 days of when due or principal of any debt securities of such
     series when due (including any sinking fund installment);

          (2) failure to perform any other agreement contained in the debt
     securities of such series or the indenture relating to such series (other
     than an agreement relating solely to another series of debt securities) for
     60 days after notice; and

          (3) certain events of bankruptcy, insolvency or reorganization with
     respect to us.

     Additional or different events of default, if any, applicable to the series
of debt securities in respect of which this prospectus is being delivered will
be specified in the applicable prospectus supplement.

     The trustee under such indenture shall, within 75 days after the occurrence
of any default (the term "default" to include the events specified above without
grace or notice) with respect to any series of debt securities actually known to
it, give to the holders of such debt securities notice of such default;
provided,
                                       26
<PAGE>   80

however, that, except in the case of a default in the payment of principal of or
interest on any of the debt securities of such series or in the payment of a
sinking fund installment, the trustee for such series shall be protected in
withholding such notice if it in good faith determines that the withholding of
such notice is in the interest of the holders of such debt securities. We shall
certify to the trustee quarterly as to whether any default exists.

     In the case of an event of default, other than an event of default
resulting from bankruptcy, insolvency or reorganization, with respect to any
series of debt securities shall occur and be continuing, the trustee for such
series or the holders of at least 25% in aggregate principal amount of the debt
securities of such series then outstanding, by notice in writing to us (and to
the trustee for such series if given by the holders of the debt securities of
such series), will be entitled to declare all unpaid principal of and accrued
interest on such debt securities then outstanding to be due and payable
immediately.

     In the case of an event of default resulting from certain events of
bankruptcy, insolvency or reorganization, all unpaid principal of and accrued
interest on all debt securities of such series then outstanding shall be due and
payable immediately without any declaration or other act on the part of the
trustee for such series or the holders of any debt securities of such series.

     Such acceleration may be annulled and past defaults (except, unless
theretofore cured, a default in payment of principal of or interest on the debt
securities of such series) may be waived by the holders of a majority in
principal amount of the debt securities of such series then outstanding upon the
conditions provided in the applicable indenture.

     No holder of the debt securities of any series issued thereunder may pursue
any remedy under such indenture unless the trustee for such series shall have
failed to act after, among other things, notice of an event of default and
request by holders of at least 25% in principal amount of the debt securities of
such series of which the event of default has occurred and the offer to the
trustee for such series of indemnity satisfactory to it; provided, however, that
such provision does not affect the right to sue for enforcement of any overdue
payment on such debt securities.

CONVERSION RIGHTS

     The terms and conditions, if any, upon which the debt securities of any
series will be convertible into common stock will be set forth in the prospectus
supplement relating thereto. Such terms will include the conversion price (or
manner of calculation thereof), the conversion period, provisions as to whether
conversion will be at the option of the holders of such series of debt
securities or at our option, the events requiring an adjustment of the
conversion price and provisions affecting conversion in the event of the
redemption of such series of debt securities.

THE TRUSTEE

     The trustee for each series of debt securities will be Harris Trust and
Savings Bank. Each indenture will contain certain limitations on a right of the
trustee, as our creditor, to obtain payment of claims in certain cases, or to
realize on certain property received in respect of any such claim as security or
otherwise. The trustee will be permitted to engage in other transactions;
provided, however, that if it acquires any conflicting interest, it must
eliminate such conflict or resign.

     The holders of a majority in principal amount of all outstanding debt
securities of a series (or if more than one series is affected thereby, of all
series so affected, voting as a single class) will have the right to direct the
time, method and place of conducting any proceeding for exercising any remedy or
power available to the trustee for such series or all such series so affected.

     In case an event of default shall occur (and shall not be cured) under any
indenture relating to a series of debt securities and is actually known to a
responsible officer of the trustee for such series, such trustee shall exercise
such of the rights and powers vested in it by such indenture and use the same
degree of care and skill in its exercise as a prudent person would exercise or
use under the circumstances in the conduct of his own affairs. Subject to such
provisions, the trustee will not be under any obligation to
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<PAGE>   81

exercise any of its rights or powers under the applicable indenture at the
request of any of the holders of debt securities unless they shall have offered
to the trustee security and indemnity satisfactory to it.

GOVERNING LAW

     The indenture and the debt securities will be governed by the laws of the
State of New York.

GLOBAL SECURITIES; BOOK-ENTRY SYSTEM

     We may issue the debt securities of any series in whole or in part in the
form of one or more global securities to be deposited with, or on behalf of, a
depository (the "depository") identified in the prospectus supplement relating
to such series. Global securities, if any, issued in the United States are
expected to be deposited with The Depository Trust Company ("DTC"), as
depository. Global securities will be issued in fully registered form and may be
issued in either temporary or permanent form. Unless and until it is exchanged
in whole or in part for the individual debt securities represented thereby, a
global security may not be transferred except as a whole by the depository for
such global security to a nominee of such depository or by a nominee of such
depository to such depository or another nominee of such depository or by such
depository or any nominee of such depository to a successor depository or any
nominee of such successor.

     The specific terms of the depository arrangement with respect to any series
of debt securities will be described in the prospectus supplement relating to
such series. We expect that unless otherwise indicated in the applicable
prospectus supplement, the following provisions will apply to depository
arrangements.

     Upon the issuance of a global security, the depository for such global
security or its nominee will credit on its book-entry registration and transfer
system the respective principal amounts of the individual debt securities
represented by such global security to the accounts of persons that have
accounts with such depository ("participants"). Such accounts will be designated
by the underwriters, dealers or agents with respect to such debt securities or
by us if such debt securities are offered directly by us. Ownership of
beneficial interests in such global security will be limited to participants or
persons that may hold interests through participants.

     We expect that, pursuant to procedures established by DTC, ownership of
beneficial interests in any global security with respect to which DTC is the
depository will be shown on, and the transfer of that ownership will be effected
only through, records maintained by DTC or its nominee (with respect to
beneficial interests of participants) and records of participants (with respect
to beneficial interests of persons who hold through participants). Neither we
nor the trustee will have any responsibility or liability for any aspect of the
records of DTC or for maintaining, supervising or reviewing any records of DTC
or any of its participants relating to beneficial ownership interests in the
debt securities. The laws of some states require that certain purchasers of
securities take physical delivery of such securities in definitive form. Such
limits and laws may impair the ability to own, pledge or transfer beneficial
interest in a global security.

     So long as the depository for a global security or its nominee is the
registered owner of such global security, such depository or such nominee, as
the case may be, will be considered the sole owner or holder of the debt
securities represented by such global security for all purposes under the
applicable indenture. Except as described below or in the applicable prospectus
supplement, owners of beneficial interest in a global security will not be
entitled to have any of the individual debt securities represented by such
global security registered in their names, will not receive or be entitled to
receive physical delivery of any such debt securities in definitive form and
will not be considered the owners or holders thereof under the applicable
indenture. Beneficial owners of debt securities evidenced by a global security
will not be considered the owners or holders thereof under the applicable
indenture for any purpose, including with respect to the giving of any
direction, instructions or approvals to the trustee thereunder. Accordingly,
each person owning a beneficial interest in a global security with respect to
which DTC is the depository must rely on the procedures of DTC and, if such
person is not a participant, on the procedures of the participant through which
such person owns its interests, to exercise any rights of a holder under the
applicable
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<PAGE>   82

indenture. We understand that, under existing industry practice, if it requests
any action of holders or if an owner of a beneficial interest in a global
security desires to give or take any action which a holder is entitled to give
or take under the applicable indenture, DTC would authorize the participants
holding the relevant beneficial interest to give or take such action, and such
participants would authorize beneficial owners through such participants to give
or take such actions or would otherwise act upon the instructions of beneficial
owners holding through them.

     Payments of principal of, and any interest on, individual debt securities
represented by a global security registered in the name of a depository or its
nominee will be made to or at the direction of the depository or its nominee, as
the case may be, as the registered owner of the global security under the
applicable indenture. Under the terms of the applicable indenture, we and the
trustee may treat the persons in whose name debt securities, including a global
security, are registered as the owners thereof for the purpose of receiving such
payments. Consequently, neither we nor the trustee has or will have any
responsibility or liability for the payment of such amounts to beneficial owners
of debt securities (including principal and interest). We believe, however, that
it is currently the policy of DTC to immediately credit the accounts of relevant
participants with such payments, in amounts proportionate to their respective
holdings of beneficial interests in the relevant global security as shown on the
records of DTC or its nominee. We also expect that payments by participants to
owners of beneficial interests in such global security held through such
participants will be governed by standing instructions and customary practices,
as is the case with securities held for the account of customers in bearer form
or registered in street name, and will be the responsibility of such
participants. Redemption notices with respect to any debt securities represented
by a global security will be sent to the depository or its nominee. If less than
all of the debt securities of any series are to be redeemed, we expect the
depository to determine the amount of the interest of each participant in such
debt securities to be redeemed to be determined by lot. None of us, the trustee,
any paying agent or the registrar for such debt securities will have any
responsibility or liability for any aspect of the records relating to or
payments made on account of beneficial ownership interests in the global
security for such debt securities or for maintaining any records with respect
thereto.

     Neither we nor the trustee will be liable for any delay by the holders of a
global security or the depository in identifying the beneficial owners of debt
securities and we and the trustee may conclusively rely on, and will be
protected in relying on, instructions from the holder of a global security or
the depository for all purposes. The rules applicable to DTC and its
participants are on file with the Securities and Exchange Commission.

     If a depository for any debt securities is at any time unwilling, unable or
ineligible to continue as depository and a successor depository is not appointed
by us within 90 days, we will issue individual debt securities in exchange for
the global security representing such debt securities. In addition, we may at
any time and in its sole discretion, subject to any limitations described in the
prospectus supplement relating to such debt securities, determine not to have
any of such debt securities represented by one or more global securities and in
such event will issue individual debt securities in exchange for the global
security or securities representing such debt securities. Individual debt
securities so issued will be issued in denominations of $1,000 and integral
multiples thereof.

     All moneys paid by us to a paying agent or a trustee for the payment of the
principal of or interest on any debt security which remain unclaimed at the end
of two years after such payment has become due and payable will be repaid to us,
and the holder of such debt security thereafter may look only to us for payment
thereof.

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<PAGE>   83

           DESCRIPTION OF SUBORDINATED DEFERRABLE INTEREST DEBENTURES

GENERAL

     The subordinated deferrable interest debentures will be our unsecured,
subordinated obligations. We may issue subordinated deferrable interest
debentures from time to time in one or more series under an indenture to be
entered into among us and The Bank of New York, as subordinated debt trustee.
There is no limit on the aggregate principal amount of subordinated deferrable
interest debentures we may issue and we may issue the subordinated deferrable
interest debentures from time to time in one or more series pursuant to a
supplemental indenture or a resolution of our board of directors or a special
committee thereof. The terms of the subordinated deferrable interest debentures
will include those stated in the indenture and in a supplemental indenture and
those made part of the indenture by reference to the Trust Indenture Act of
1939, as amended.

     In the event we issue subordinated deferrable interest debentures to a
trust or a trustee of such trust in connection with the issuance of trust
securities by such trust, we may subsequently distribute such subordinated
deferrable interest debentures pro rata to the holders of such trust securities
in connection with the termination of such trust upon the occurrence of certain
events described in the prospectus supplement relating to such trust securities.
We will issue only one series of subordinated deferrable interest debentures to
a trust or a trustee of such trust in connection with the issuance of trust
securities by such trust.

     The following summary does not purport to be complete and is subject in all
respects to the provisions of, and is qualified in its entirety by reference to,
the indenture, which is filed as an exhibit to the registration statement of
which this prospectus forms a part, and the Trust Indenture Act of 1939, as
amended. Whenever particular provisions or defined terms in the indenture are
referred to herein, such provisions or defined terms are incorporated by
reference herein.

TERMS

     Reference is made to the accompanying prospectus supplement for the
following terms of the series of subordinated deferrable interest debentures
being offered thereby:

          (1) the specific title of such subordinated deferrable interest
     debentures;

          (2) any limit on the aggregate principal amount of such subordinated
     deferrable interest debentures;

          (3) the date or dates on which the principal of such subordinated
     deferrable interest debentures is payable and the right, if any, to extend
     such date or dates;

          (4) the rate or rates at which such subordinated deferrable interest
     debentures will bear interest or the method of determination of such rate
     or rates;

          (5) the date or dates from which such interest shall accrue, the
     interest payment dates on which such interest will be payable or the manner
     of determination of such interest payment dates and the record dates for
     the determination of holders to whom interest is payable on any such
     interest payment dates;

          (6) the right, if any, to extend the interest payment periods and the
     duration of such extension;

          (7) the period or periods within which, the price or prices at which,
     and the terms and conditions upon which, such subordinated deferrable
     interest debentures may be redeemed, in whole or in part, at our option;

          (8) our right and/or obligation, if any, to redeem or purchase such
     subordinated deferrable interest debentures pursuant to any sinking fund or
     analogous provisions or at the option of the holder thereof and the period
     or periods during which, the price or prices at which, and the terms and

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<PAGE>   84

     conditions upon which, such subordinated deferrable interest debentures
     shall be redeemed or purchased, in whole or part, pursuant to such right
     and/or obligation;

          (9) the terms of subordination;

          (10) if other than denominations of $25 or any integral multiple
     thereof, the denominations in which such subordinated deferrable interest
     debentures shall be issuable;

          (11) any and all other terms with respect to such series; and

          (12) whether such subordinated deferrable interest debentures are
     issuable as a global security, and in such case, the identity of the
     depositary.

     Holders of subordinated deferrable interest debentures do not have any
protection in the event of a highly leveraged transaction involving us.

SUBORDINATION

     The subordinated deferrable interest debentures will be subordinated and
junior in right of payment to certain of our other indebtedness to the extent
set forth in the accompanying prospectus supplement.

CERTAIN COVENANTS

     If we issue subordinated deferrable interest debentures to a trust or a
trustee of such trust in connection with the issuance of trust securities by
such trust and:

          (1) there shall have occurred and be continuing any event that would
     constitute an event of default under the indenture; or

          (2) we shall be in default with respect to our payment of any
     obligations under the related trust preferred securities guarantee or trust
     common securities guarantee, and such default shall be continuing,

then:

          (1) we shall not declare or pay any dividend on, make any
     distributions with respect to, or redeem, purchase or make a liquidation
     payment with respect to, any of our capital stock;

          (2) we shall not make any payment of interest, principal or premium,
     if any, on or repay, repurchase or redeem any of our debt securities which
     rank pari passu with or junior to such subordinated deferrable interest
     debentures; and

          (3) we shall not make any guarantee payments, other than pursuant to
     the trust preferred security guarantees, with respect to the foregoing.

     If we issue subordinated deferrable interest debentures to a trust or a
trustee of such trust in connection with the issuance of trust securities by
such trust and we shall have given notice of our election to defer payments of
interest on such subordinated deferrable interest debentures by extending the
interest payment period and such period, or any extension thereof, shall be
continuing, then:

          (1) we shall not declare or pay any dividend on, make any
     distributions with respect to, or redeem, purchase or make a liquidation
     payment with respect to, any of our capital stock;

          (2) we shall not make any payment of interest, principal or premium,
     if any, on or repay, repurchase or redeem any of our debt securities which
     rank pari passu with or junior to such subordinated deferrable interest
     debentures; and

          (3) we shall not make any guarantee payments, other than pursuant to
     the trust preferred security guarantees, with respect to the foregoing.

                                       31
<PAGE>   85

     Notwithstanding the foregoing restrictions, we will be permitted, in any
event, to make dividend, redemption, liquidation and guarantee payments on
capital stock, and interest, principal, redemption and guarantee payments on
debt securities we issued ranking pari passu with or junior to subordinated
deferrable interest debentures, where the payment is made by way of securities
(including capital stock) that rank junior to the securities on which such
payment is being made.

     If we issue subordinated deferrable interest debentures to a trust or a
trustee of such trust in connection with the issuance of trust securities of
such trust, for so long as such trust securities remain outstanding, we will
covenant:

          (1) to directly or indirectly maintain 100% ownership of the trust
     common securities of such trust; provided, however, that any of our
     permitted successors under the indenture may succeed to our ownership of
     such trust common securities;

          (2) not to cause, as sponsor of such trust, or to permit, as holder of
     the trust common securities of such trust, the termination, dissolution or
     winding-up of such trust, except in connection with a distribution of the
     subordinated deferrable interest debentures as provided in the declaration
     of such trust and in connection with certain mergers, consolidations or
     amalgamations;

          (3) to use our reasonable efforts to cause such trust

             (a) to remain a statutory business trust, except in connection with
        the distribution of subordinated deferrable interest debentures to the
        holders of trust securities in liquidation of such trust, the redemption
        of all of the trust securities of such trust, or certain mergers,
        consolidations or amalgamations, each as permitted by the declaration of
        such trust; and

             (b) to otherwise continue not to be classified as an association
        taxable as a corporation or partnership for united states federal income
        tax purposes; and

          (4) to use reasonable efforts to cause each holder of trust securities
     of such trust to be treated as owning an undivided beneficial interest in
     the subordinated deferrable interest debentures issued to such trust.

FORM, EXCHANGE, REGISTRATION AND TRANSFER

     We may issue subordinated deferrable interest debentures of each series in
registered form and in either certificated form or represented by one or more
global securities. If not represented by one or more global securities,
subordinated deferrable interest debentures may be presented for registration of
transfer (with the form of transfer endorsed thereon duly executed) or exchange
at the office of the debt registrar or at the office of any transfer agent
designated by us for such purpose with respect to any series of subordinated
deferrable interest debentures and referred to in an applicable prospectus
supplement, without service charge and upon payment of any taxes and other
governmental charges. Such transfer or exchange will be effected upon the debt
registrar or such transfer agent, as the case may be, being satisfied with the
documents of title and identity of the person making the request. We have
appointed the subordinated debt trustee as debt registrar with respect to each
series of subordinated deferrable interest debentures. If a prospectus
supplement refers to any transfer agents (in addition to the debt registrar)
initially designated by us with respect to any series of subordinated deferrable
interest debentures, we may at any time rescind the designation of any such
transfer agent or approve a change in the location through which any such
transfer agent acts, except that we will be required to maintain a transfer
agent in each place of payment for such series. We may at any time designate
additional transfer agents with respect to any series of subordinated deferrable
interest debentures.

     In the event of any redemption in part, we shall not be required to:

          (1) issue, register the transfer of or exchange any subordinated
     deferrable interest debentures during a period beginning at the opening of
     business 15 days before any selection for redemption of subordinated
     deferrable interest debentures of like tenor and of the series of which
     such subordinated deferrable interest debentures are a part, and ending at
     the close of business on the earliest date on
                                       32
<PAGE>   86

     which the relevant notice of redemption is deemed to have been given to all
     holders of subordinated deferrable interest debentures of like tenor and of
     such series to be redeemed; and

          (2) register the transfer of or exchange any subordinated deferrable
     interest debentures so selected for redemption, in whole or in part, except
     the unredeemed portion of any subordinated deferrable interest debentures
     being redeemed in part.

PAYMENT AND PAYING AGENTS

     Unless otherwise indicated in an applicable prospectus supplement, payment
of principal of and premium, if any, on any subordinated deferrable interest
debentures will be made only against surrender to the paying agent of such
subordinated deferrable interest debentures. Unless otherwise indicated in an
applicable prospectus supplement, principal of, any premium, if any, and
interest, if any, on subordinated deferrable interest debentures will be
payable, subject to any applicable laws and regulations, at the office of such
paying agent or paying agents as we may designate from time to time, except that
at our option, payment of any interest may be made by check mailed to the
address of the person entitled thereto as such address as shall appear in the
debt register with respect to such subordinated deferrable interest debentures.
Unless otherwise indicated in an applicable prospectus supplement, payment of
interest on a subordinated deferrable interest debenture on any interest payment
date will be made to the person in whose name such subordinated deferrable
interest debenture (or predecessor security) is registered at the close of
business on the regular record date for such interest payment.

     The subordinated debt trustee will act as paying agent with respect to each
series of subordinated deferrable interest debentures. We may at any time
designate additional paying agents or rescind the designation of any paying
agents or approve a change in the office through which any paying agent acts,
except that we will be required to maintain a paying agent in each place of
payment for each series of subordinated deferrable interest debentures.

     All moneys paid by us to a paying agent for the payment of the principal of
or premium or interest, if any, on any subordinated deferrable interest
debentures of any series which remain unclaimed at the end of two years after
such principal or premium or interest, if any, shall have become due and payable
will be repaid to us and the holder of such subordinated deferrable interest
debentures will thereafter look only to us for payment thereof.

GLOBAL SECURITIES

     If any subordinated deferrable interest debentures of a series are
represented by one or more global securities, the applicable prospectus
supplement will describe the circumstances, if any, under which beneficial
owners of interests in any such global security may exchange such interests for
subordinated deferrable interest debentures of such series and of like tenor and
principal amount in any authorized form and denomination. Principal of and any
premium, if any, and interest on a global security will be payable in the manner
described in the applicable prospectus supplement.

     The specific terms of the depositary arrangement with respect to any
portion of a series of subordinated deferrable interest debentures to be
represented by a global security will be described in the applicable prospectus
supplement.

MODIFICATION OF THE INDENTURE

     We and the subordinated debt trustee, with the consent of the holders of
not less than a majority in principal amount of the subordinated deferrable
interest debentures of each series which are affected by the modification, may
modify the indenture or any supplemental indenture affecting that series or the
rights of the holders of that series of subordinated deferrable interest
debentures; provided, however, that

                                       33
<PAGE>   87

no such modification may, without the consent of the holder of each outstanding
subordinated deferrable interest debenture affected thereby:

          (1) extend the fixed maturity of any subordinated deferrable interest
     debentures of any series, or reduce the principal amount thereof, or reduce
     the rate or extend the time of payment of interest thereon, or reduce any
     premium payable upon the redemption thereof, without the consent of the
     holder of each subordinated deferrable interest debenture so affected; or

          (2) reduce the percentage of subordinated deferrable interest
     debentures the holders of which are required to consent to any such
     supplemental indenture, without the consent of the holders of each then
     outstanding subordinated deferrable interest debenture affected thereby.

     In addition, we and the subordinated debt trustee may execute, without the
consent of any holder of subordinated deferrable interest debentures, any
supplemental indenture for certain other usual purposes including the creation
of any new series of subordinated deferrable interest debentures.

EVENTS OF DEFAULT

     With respect to a particular series of subordinated deferrable interest
debentures, one or more of the following described events which has occurred and
is continuing constitutes an event of default with respect to such series of
subordinated deferrable interest debentures:

          (1) failure for 30 days to pay interest on the subordinated deferrable
     interest debentures of that series, including any additional interest in
     respect thereof, when due; provided, however, that a valid extension of the
     interest payment period by us shall not constitute a default in the payment
     of interest for this purpose;

          (2) failure to pay principal or premium, if any, on the subordinated
     deferrable interest debentures of that series when due whether at maturity,
     upon redemption, by declaration or otherwise, or to make any sinking fund
     payment with respect to that series;

          (3) failure to observe or perform any other covenant (other than those
     specifically relating to another series) contained in the indenture for 90
     days after written notice to us from the subordinated debt trustee or the
     holders of at least 25% in principal amount of the outstanding subordinated
     deferrable interest debentures of that series;

          (4) certain events of bankruptcy, insolvency or reorganization of us;
     or

          (5) in the event subordinated deferrable interest debentures are
     issued to a trust or a trustee of such trust in connection with the
     issuance of trust securities by such trust, the voluntary or involuntary
     dissolution, winding-up or termination of such trust, except in connection
     with the distribution of subordinated deferrable interest debentures to the
     holders of trust securities in liquidation of such trust, the redemption of
     all of the trust securities of such trust, or certain mergers,
     consolidations or amalgamations, each as permitted by the declaration of
     such trust.

     The holders of a majority in aggregate outstanding amount of any series of
subordinated deferrable interest debentures have the right to direct the time,
method and place of conducting any proceeding for any remedy available to the
subordinated debt trustee for the series. The subordinated debt trustee or the
holders of not less than 25% in aggregate outstanding principal amount of any
particular series of the subordinated deferrable interest debentures may declare
the principal immediately due and payable upon an event of default with respect
to such series, but the holders of a majority in aggregate outstanding principal
amount of such series may annul such declaration and waive the default with
respect to such series if the event of default has been cured and a sum
sufficient to pay all matured installments of interest and principal due
otherwise than by acceleration and any applicable premium has been deposited
with the subordinated debt trustee. If an event of default results from our
failure to pay when due principal of or interest on the subordinated deferrable
interest debentures issued to a trust, during the continuance of such an event
of default a holder of trust preferred securities issued by such trust may
immediately institute a
                                       34
<PAGE>   88

legal proceeding directly against us to obtain payment of such principal or
interest on subordinated deferrable interest debentures having a principal
amount equal to the aggregate liquidation amount of the trust preferred
securities owned of record by such holder.

     The holders of a majority in aggregate outstanding principal amount of any
series of subordinated deferrable interest debentures affected thereby may, on
behalf of the holders of all the subordinated deferrable interest debentures of
such series, waive any past default, except:

          (1) a default in the payment of principal, premium, if any, or
     interest (unless such default has been cured and a sum sufficient to pay
     all matured installments of interest and principal due otherwise than by
     acceleration and any applicable premium has been deposited with the
     subordinated debt trustee); or

          (2) a default in the covenants described in the first or second
     paragraph under "-- Certain Covenants" above.

CONSOLIDATION, MERGER AND SALE

     There are no covenants which restrict our ability to merge or consolidate
with or into any other corporation, sell or convey all or substantially all of
its assets to any person, firm or corporation or otherwise engage in
restructuring transactions.

DEFEASANCE AND DISCHARGE

     We will be discharged from any and all obligations in respect of the
subordinated deferrable interest debentures of any series (except in each case
for certain obligations to register the transfer or exchange of subordinated
deferrable interest debentures, replace, stolen, lost or mutilated subordinated
deferrable interest debentures, maintain paying agencies and hold moneys for
payment in trust) if we deposit with the subordinated debt trustee, in trust,
moneys or U.S. government obligations in an amount sufficient to pay all the
principal of, and interest on, the subordinated deferrable interest debentures
of such series on the dates such payments are due in accordance with the terms
of such subordinated deferrable interest debentures.

GOVERNING LAW

     The indenture and the subordinated deferrable interest debentures will be
governed by, and construed in accordance with, the internal laws of the State of
New York.

INFORMATION CONCERNING THE SUBORDINATED DEBT TRUSTEE

     The subordinated debt trustee, prior to default, undertakes to perform only
such duties as are specifically set forth in the indenture and, after default,
shall exercise the same degree of care as a prudent individual would exercise in
the conduct of his or her own affairs. Subject to such provision, the
subordinated debt trustee is under no obligation to exercise any of the powers
vested in it by the indenture at the request of any holder of subordinated
deferrable interest debentures, unless offered reasonable indemnity by such
holder against the costs, expenses and liabilities which might be incurred
thereby. The subordinated debt 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 subordinated debt trustee reasonably believes that repayment or
adequate indemnity is not reasonably assured to it.

     We and certain of our affiliates may maintain a deposit account and banking
relationship with the subordinated debt trustee. The subordinated debt trustee
serves as trustee under other indentures pursuant to which our unsecured debt
securities are outstanding.

                                       35
<PAGE>   89

MISCELLANEOUS

     We will have the right at all times to assign any of its rights or
obligations under the indenture to our direct or indirect wholly owned
subsidiary; provided, however, that in the event of any such assignment, we will
remain liable for all of our obligations thereunder. Subject to the foregoing,
the indenture will be binding upon and inure to the benefit of the parties
thereto and their respective successors and assigns. The indenture provides that
it may not otherwise be assigned by the parties thereto.

                    DESCRIPTION OF STOCK PURCHASE CONTRACTS
                            AND STOCK PURCHASE UNITS

     We may issue stock purchase contracts, including contracts obligating
holders to purchase from us, and us to sell to the holders, a specified number
of shares of common stock at a future date or dates, which we refer to herein as
"stock purchase contracts." The consideration per share of common stock may be
fixed at the time the stock purchase contracts are issued or may be determined
by reference to a specific formula set forth in the stock purchase contracts.
The stock purchase contracts may be issued separately or as part of units
consisting of a stock purchase contract and debt securities, trust preferred
securities or debt obligations of third parties, including U.S. treasury
securities, securing the holders' obligations to purchase the common stock under
the stock purchase contracts, which we refer to herein as "stock purchase
units." The stock purchase contracts may require us to make periodic payments to
the holders of the stock purchase units or vice versa, and such payments may be
unsecured or prefunded on some basis. The stock purchase contracts may require
holders to secure their obligations thereunder in a specified manner.

     The applicable prospectus supplement will describe the terms of any stock
purchase contracts or stock purchase units. The description in the prospectus
supplement will not necessarily be complete, and reference will be made to the
stock purchase contracts, and, if applicable, collateral or depositary
arrangements, relating to such stock purchase contracts or stock purchase units.
Material United States federal income tax considerations applicable to the stock
purchase units and the stock purchase contracts will be discussed in the
prospectus supplement relating thereto.

                              PLAN OF DISTRIBUTION

     We and the trusts may sell securities in any of three ways: (1) through
underwriters or dealers; (2) directly to a limited number of institutional
purchasers or to a single purchaser; or (3) through agents. Any such dealer or
agent, in addition to any underwriter, may be deemed to be an underwriter within
the meaning of the Securities Act of 1933, as amended. The terms of the offering
of the securities with respect to which this prospectus is being delivered will
be set forth in the applicable prospectus supplement and will include:

     - the name or names of any underwriters, dealers or agents;

     - the purchase price of such securities and the proceeds to us from such
       sale;

     - any underwriting discounts and other items constituting underwriters'
       compensation;

     - the public offering price; and

     - any discounts or concessions which may be allowed or reallowed or paid to
       dealers and any securities exchanges on which the securities may be
       listed.

     If underwriters are used in the sale of securities, such securities will be
acquired by the underwriters for their own account and may be resold from time
to time in one or more transactions, including negotiated transactions, at a
fixed public offering price or at varying prices determined at the time of sale.
The securities may be offered to the public either through underwriting
syndicates represented by managing underwriters or directly by one or more
underwriters acting alone. Unless otherwise set forth in

                                       36
<PAGE>   90

the applicable prospectus supplement, the obligations of the underwriters to
purchase the securities described in the applicable prospectus supplement will
be subject to certain conditions precedent, and the underwriters will be
obligated to purchase all such securities if any are so purchased by them. Any
public offering price and any discounts or concessions allowed or reallowed or
paid to dealers may be changed from time to time.

     The securities may be sold directly by us or the applicable trust or
through agents designated by us or the applicable trust from time to time. Any
agents involved in the offer or sale of the securities in respect of which this
prospectus is being delivered, and any commissions payable by us or the
applicable trust to such agents, will be set forth in the applicable prospectus
supplement. Unless otherwise indicated in the applicable prospectus supplement,
any such agent will be acting on a best efforts basis for the period of its
appointment.

     If dealers are utilized in the sale of any securities, we or the applicable
trust will sell the securities to the dealers, as principals. Any dealer may
resell the securities to the public at varying prices to be determined by the
dealer at the time of resale. The name of any dealer and the terms of the
transaction will be set forth in the prospectus supplement with respect to the
securities being offered.

     Securities may also be offered and sold, if so indicated in the applicable
prospectus supplement, in connection with a remarketing upon their purchase, in
accordance with a redemption or repayment pursuant to their terms, or otherwise,
by one or more firms, which we refer to herein as the "remarketing firms,"
acting as principals for their own accounts or as our or a trust's agents, as
applicable. Any remarketing firm will be identified and the terms of its
agreement, if any, with us or the applicable trust and its compensation will be
described in the applicable prospectus supplement. Remarketing firms may be
deemed to be underwriters, as that term is defined in the Securities Act of
1933, as amended, in connection with the securities remarketed thereby.

     If so indicated in the applicable prospectus supplement, we or the
applicable trust will authorize agents, underwriters or dealers to solicit
offers by certain specified institutions to purchase the securities to which
this prospectus and the applicable prospectus supplement relates from us or the
applicable trust at the public offering price set forth in the applicable
prospectus supplement, plus, if applicable, accrued interest, pursuant to
delayed delivery contracts providing for payment and delivery on a specified
date in the future. Such contracts will be subject only to those conditions set
forth in the applicable prospectus supplement, and the applicable prospectus
supplement will set forth the commission payable for solicitation of such
contracts.

     Underwriters will not be obligated to make a market in any securities. No
assurance can be given regarding the activity of trading in, or liquidity of,
any securities.

     Agents, dealers, underwriters and remarketing firms may be entitled, under
agreements entered into with us or the applicable trust (or both), to
indemnification by us or the applicable trust (or both) against certain civil
liabilities, including liabilities under the Securities Act of 1933, as amended,
or to contribution to payments they may be required to make in respect thereof.
Agents, dealers, underwriters and remarketing firms may be customers of, engage
in transactions with, or perform services for, us and/or the applicable trust in
the ordinary course of business.

     Each series of securities will be a new issue and, other than the common
stock, which is listed on the New York Stock Exchange, will have no established
trading market. We may elect to list any series of securities on an exchange,
and in the case of the common stock, on any additional exchange, but, unless
otherwise specified in the applicable prospectus supplement, we shall not be
obligated to do so. No assurance can be given as to the liquidity of the trading
market for any of the securities.

     Agents, underwriters, dealers and remarketing firms may be customers of,
engage in transactions with, or perform services for, us and our subsidiaries in
the ordinary course of business.

                                       37
<PAGE>   91

                                 LEGAL MATTERS

     Certain legal matters in connection with the equity securities, the debt
securities, the common stock warrants, the preferred securities guarantees, the
stock purchase contracts and stock purchase units offered hereby will be passed
upon for us by Austin M. O'Toole, Esq., our Senior Vice President and Secretary,
and for any underwriters, agents and dealers by Cahill Gordon & Reindel (a
partnership including a professional corporation), New York, New York. Certain
matters of Delaware law relating to the validity of the trust preferred
securities will be passed upon on behalf of the trusts by Richards, Layton &
Finger, P.A., Wilmington, Delaware, special Delaware counsel to the trusts. As
of June 15, 1999, Mr. O'Toole beneficially owned approximately 51,077 shares of
our common stock and 553 shares of Class A Common Stock, including exercisable
stock options.

                                    EXPERTS

     Our annual consolidated financial statements and financial statement
schedules incorporated in this prospectus by reference from the 1998 Annual
Report on Form 10-K have been audited by Deloitte & Touche LLP, independent
auditors, as stated in their report, which is incorporated herein by reference,
and have been so incorporated in reliance upon the report of such firm given
upon their authority as experts in accounting and auditing.

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<PAGE>   92

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                                  THE COASTAL CORPORATION
          [COASTAL CORPORATION LOGO]
                     (R)

                                   16,000,000
                               FELINE PRIDES(SM)

                                  $35,000,000
                       6 5/8% SENIOR DEBENTURES DUE 2004

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

                             PROSPECTUS SUPPLEMENT
                ------------------------------------------------

                              MERRILL LYNCH & CO.

                                LEHMAN BROTHERS

                         BANC OF AMERICA SECURITIES LLC

                                 July 28, 1999

(SM)Service Mark of Merrill Lynch & Co., Inc.

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