K N ENERGY INC
S-3/A, 1998-10-07
NATURAL GAS TRANSMISISON & DISTRIBUTION
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<PAGE>   1
 
   
    AS FILED WITH THE SECURITIES AND EXCHANGE COMMISSION ON AUGUST   , 1998
    
 
                                                      REGISTRATION NO. 333-55921
- --------------------------------------------------------------------------------
- --------------------------------------------------------------------------------
 
                       SECURITIES AND EXCHANGE COMMISSION
                             WASHINGTON, D.C. 20549
                            ------------------------
                                AMENDMENT NO. 1
 
                                       TO
 
                                    FORM S-3
                             REGISTRATION STATEMENT
                                     UNDER
                           THE SECURITIES ACT OF 1933
                            ------------------------
 
   
<TABLE>
<S>                                                          <C>
                      K N ENERGY, INC.                                           K N CAPITAL TRUST II
   (EXACT NAME OF REGISTRANT AS SPECIFIED IN ITS CHARTER)       (EXACT NAME OF REGISTRANT AS SPECIFIED IN ITS CHARTER)
                         48-0290000                                                   51-6508860
          (I.R.S. EMPLOYER IDENTIFICATION NUMBER)                      (I.R.S. EMPLOYER IDENTIFICATION NUMBER)
                           KANSAS                                                      DELAWARE
                  (STATE OF INCORPORATION)                                     (STATE OF INCORPORATION)
                                                                                 C/O K N ENERGY, INC.
                   370 VAN GORDON STREET                                        370 VAN GORDON STREET
                      P.O. BOX 281304                                              P.O. BOX 281304
               LAKEWOOD, COLORADO 80228-8304                                LAKEWOOD, COLORADO 80228-8304
                       (303) 989-1740                                               (303) 989-1740
(ADDRESS, INCLUDING ZIP CODE AND TELEPHONE NUMBER, INCLUDING (ADDRESS, INCLUDING ZIP CODE AND TELEPHONE NUMBER, INCLUDING
   AREA CODE, OR REGISTRANT'S PRINCIPAL EXECUTIVE OFFICE)       NEW CODE, OR REGISTRANT'S PRINCIPAL EXECUTIVE OFFICE)
</TABLE>
    
 
                             MARTHA B. WYRSCH, ESQ.
                  VICE PRESIDENT, GENERAL COUNSEL & SECRETARY
                     370 VAN GORDON STREET, P.O. BOX 281304
                         LAKEWOOD, COLORADO 80228-8304
                                 (303) 989-1740
(NAME, ADDRESS, INCLUDING ZIP CODE AND TELEPHONE NUMBER, INCLUDING AREA CODE, OF
                               AGENT FOR SERVICE)
                            ------------------------
 
                                   COPIES TO:
 
<TABLE>
<S>                                                          <C>
                  VINCENT PAGANO, JR. ESQ.                                   C. MICHAEL HARRINGTON, ESQ.
                 SIMPSON THACHER & BARTLETT                                     VINSON & ELKINS L.L.P.
                    425 LEXINGTON AVENUE                                        2300 FIRST CITY TOWER
                  NEW YORK, NEW YORK 10017                                            1001 FANIN
                       (212) 455-2000                                         HOUSTON, TEXAS 77002-6760
                                                                                    (713) 758-2148
</TABLE>
 
                            ------------------------
 
    APPROXIMATE DATE OF COMMENCEMENT OF PROPOSED SALE TO THE PUBLIC: As promptly
as practicable after this registration statement becomes effective.
 
    If the only securities being registered on this form are being offered
pursuant to dividend or interest reinvestment plans, please check the following
box. [ ]
 
    If any of the securities being registered on this Form are to be offered on
a delayed or continuous basis pursuant to Rule 415 under the Securities Act of
1933, please check the following box. [X]
 
    If this Form is filed to register additional securities for an offering
pursuant to Rule 462(b) under the Securities Act, check the following box and
list the Securities Act registration statement number of earlier effective
registration statement for the same offering. [ ]
 
    If this Form is a post-effective amendment filed pursuant to Rule 462(c)
under the Securities Act, check the following box and list the Securities Act
registration statement number of the earlier effective registration statement
for the same offering. [ ]
 
    If delivery of the prospectus is expected to be made pursuant to Rule 434,
please check the following box. [ ]
                            ------------------------
 
   
                        CALCULATION OF REGISTRATION FEE
    
 
   
<TABLE>
<CAPTION>
- ---------------------------------------------------------------------------------------------------------------------------------
- ---------------------------------------------------------------------------------------------------------------------------------
                                                                     PROPOSED MAXIMUM     PROPOSED MAXIMUM        AMOUNT OF
           TITLE OF EACH CLASS OF                 AMOUNT TO BE      OFFERING PRICE PER   AGGREGATE OFFERING      REGISTRATION
         SECURITIES TO BE REGISTERED               REGISTERED            SECURITY              PRICE                 FEE
- ---------------------------------------------------------------------------------------------------------------------------------
<S>                                           <C>                  <C>                  <C>                  <C>
Primary Offering:
  Debt Securities(1).........................               --              --                        --(7)               --
- ---------------------------------------------------------------------------------------------------------------------------------
  Common Stock, par value $5.00 per
    share(2).................................               --              --                        --(7)               --
- ---------------------------------------------------------------------------------------------------------------------------------
  Preferred Securities of K N Capital Trust
    II(3)....................................               --              --                        --(7)               --
- ---------------------------------------------------------------------------------------------------------------------------------
  Stock Purchase Contracts of K N Energy,
    Inc.(2)(3)(4)............................               --              --                        --(7)               --
- ---------------------------------------------------------------------------------------------------------------------------------
  Common Stock, par value $5.00 per share,
    issuable pursuant to the Stock Purchase
    Contracts(2)(3)(4).......................               --              --                        --(7)               --
- ---------------------------------------------------------------------------------------------------------------------------------
  Trust Debentures(5)........................               --              --                        --(7)               --
- ---------------------------------------------------------------------------------------------------------------------------------
  Guarantees of Preferred Securities of K N
    Capital Trust II, by K N Energy,
    Inc.(6)..................................               --              --                        --(7)               --
- ---------------------------------------------------------------------------------------------------------------------------------
Total........................................     $600,000,100              --              $600,000,100(7)       $  177,000(8)
- ---------------------------------------------------------------------------------------------------------------------------------
- ---------------------------------------------------------------------------------------------------------------------------------
Secondary Offering:
  Common Stock, par value $5.00 per
    share(2).................................     $ 34,500,000              --              $ 34,500,000(9)       $10,177.50
- ---------------------------------------------------------------------------------------------------------------------------------
- ---------------------------------------------------------------------------------------------------------------------------------
</TABLE>
    
 
- --------------------------------------------------------------------------------
- --------------------------------------------------------------------------------
<PAGE>   2
 
- ---------------
 
   
(1) The Debt Securities registered hereby include such additional amount as may
    be necessary so that, if Debt Securities are issued with an original issue
    discount, the aggregate initial offering prices of all Debt Securities will
    equal no more than $600,000,100.
    
 
   
(2) The shares of Common Stock registered hereby include preferred share
    purchase rights (the "Rights"). The Rights are associated with and trade
    with the Common Stock. The value, if any, attributable to the Rights is
    reflected in the market price of the Common Stock. There are also being
    registered hereunder an indeterminate number of shares of Common Stock as
    shall be issuable upon conversion of the Debt Securities registered hereby.
    
 
   
(3) Each Stock Purchase Unit of K N Energy, Inc. is a unit that consists of (i)
    a Stock Purchase Contract of K N Energy, Inc. under which the holder, upon
    settlement of such Stock Purchase Contract, will purchase an indeterminate
    number of shares of Common Stock to be issuable by K N Energy, Inc. and (ii)
    initially a beneficial interest in Preferred Securities of K N Capital Trust
    II or debt obligations of third parties, including U.S. Treasury securities,
    purchased with the proceeds from the sale of the Stock Purchase Unit and
    pledged to secure the obligation of such holder to purchase such share of
    Common Stock. No separate consideration will be received for the Stock
    Purchase Contracts.
    
 
   
(4) Consists of such indeterminate number of shares of Common Stock to be
    issuable by K N Energy, Inc. upon settlement of the Stock Purchase Contracts
    of K N Energy, Inc., including shares of such Common Stock issuable upon
    settlement of Deferred Contract Adjustment Payments as further described in
    the Registration Statement.
    
 
   
(5) The Trust Debentures of K N Energy, Inc. will be purchased by K N Capital
    Trust II with the proceeds from the sale of the Preferred Securities of K N
    Capital Trust II.
    
 
   
(6) No separate consideration will be received for the Guarantee or back-up
    undertakings of K N Energy, Inc. Includes the rights of holders of the
    Preferred Securities under such Guarantee and back-up undertakings,
    consisting of obligations of K N Energy, Inc. as set forth in the
    Declaration of Trust of K N Capital Trust II (including the obligation of
    pay expenses of K N Capital Trust II) and the Indenture governing the Trust
    Debentures of K N Energy, Inc. in each case as further described in the
    Registration Statement.
    
 
   
(7) Estimated solely for the purpose of calculating the amount of the
    registration fee pursuant to Rule 457(o) under the Securities Act of 1933,
    as amended. There are being registered an indeterminate number of Debt
    Securities, Common Stock, Stock Purchase Units, Stock Purchase Contracts,
    Trust Debentures and Guarantee of K N Energy, Inc. and Preferred Securities
    of K N Capital Trust II. The aggregate public offering prices of the Debt
    Securities, Common Stock, Stock Purchase Units, Stock Purchase Contracts,
    Trust Debentures and Guarantee of K N Energy, Inc. and Preferred Securities
    of K N Capital Trust II registered hereby will not exceed $600,000,100.
    
 
   
(8) Excludes a registration fee with respect to these securities in the amount
    of $100 that was paid on June 3, 1998.
    
 
   
(9) Estimated solely for the purpose of calculating the registration fee
    pursuant to Rule 457(o).
    
<PAGE>   3
 
   
     Pursuant to Rule 429 under the Securities Act of 1933, the first prospectus
contained in this Registration Statement relates to the remaining securities
unsold in a Primary Offering having a maximum aggregate offering price of
$819,500,000, such remaining unsold securities having been previously registered
pursuant to the Form S-3 Registration Statement No. 333-44421. This Registration
Statement also constitutes Post-Effective Amendment No. 1 to Registration
Statement 333-44421, and upon effectiveness of such Post-Effective Amendment,
this Registration Statement and Registration Statement No. 333-44421 will relate
to an aggregate of $1,419,500,100 of K N Energy's stock purchase contracts,
stock purchase units, trust debentures, debt securities and common stock and K N
Capital Trust II's preferred securities and K N's guarantee thereof to be sold
in a Primary Offering and an aggregate of $34,500,000 of common stock of K N
Energy, Inc. to be sold in a Secondary Offering.
    
 
     THE REGISTRANTS HEREBY AMEND THIS REGISTRATION STATEMENT ON SUCH DATE OR
DATES AS MAY BE NECESSARY TO DELAY ITS EFFECTIVE DATE UNTIL THE REGISTRANTS
SHALL FILE A FURTHER AMENDMENT WHICH SPECIFICALLY STATES THAT THIS REGISTRATION
STATEMENT SHALL THEREAFTER BECOME EFFECTIVE IN ACCORDANCE WITH SECTION 8(a) OF
THE SECURITIES ACT OF 1933, AS AMENDED, OR UNTIL THIS REGISTRATION STATEMENT
SHALL BECOME EFFECTIVE ON SUCH DATE AS THE COMMISSION, ACTING PURSUANT TO SAID
SECTION 8(a), MAY DETERMINE.
<PAGE>   4
 
   
                                EXPLANATORY NOTE
    
 
   
     This Registration Statement consists of two separate Prospectuses, covering
registration of:
    
 
   
          (1) Debt Securities, Common Stock, Stock Purchase Units, Stock
     Purchase Contracts, Debentures and a Guarantee of K N Energy, Inc. and
     Preferred Securities of K N Capital Trust II.
    
 
   
          (2) Common Stock of K N Energy, Inc. to be sold in one or more
     secondary offerings by Thermo LLC.
    
<PAGE>   5
 
INFORMATION CONTAINED HEREIN IS SUBJECT TO COMPLETION OR AMENDMENT. A
REGISTRATION STATEMENT RELATING TO THESE SECURITIES HAS BEEN FILED WITH THE
SECURITIES AND EXCHANGE COMMISSION. THESE SECURITIES MAY NOT BE SOLD NOR MAY
OFFERS TO BUY BE ACCEPTED PRIOR TO THE TIME THE REGISTRATION STATEMENT BECOMES
EFFECTIVE. THIS PROSPECTUS SHALL NOT CONSTITUTE AN OFFER TO SELL OR THE
SOLICITATION OF AN OFFER TO BUY NOR SHALL THERE BE ANY SALE OF THESE SECURITIES
IN ANY STATE IN WHICH SUCH OFFER, SOLICITATION OR SALE WOULD BE UNLAWFUL PRIOR
TO REGISTRATION OR QUALIFICATION UNDER THE SECURITIES LAWS OF ANY STATE OR
JURISDICTION.
 
PROSPECTUS (Subject to completion)
   
Issued October 7, 1998
    
 
   
                                 $1,419,500,100
    
   
    
 
                                K N Energy, Inc.
                            STOCK PURCHASE CONTRACTS
                              STOCK PURCHASE UNITS
                                TRUST DEBENTURES
                                DEBT SECURITIES
                                  COMMON STOCK
 
                              K N Capital Trust II
                              PREFERRED SECURITIES
                       Guaranteed as set forth herein by
 
                                K N Energy, Inc.
                            ------------------------
 
   
     K N Energy, Inc. ("K N", "K N Energy" or the "Company") may offer and sell
from time to time, together or separately: (i) Stock Purchase Contracts ("Stock
Purchase Contracts") to purchase shares of common stock, par value $5.00 per
share ("Common Stock"), of the Company; (ii) Stock Purchase Units ("Stock
Purchase Units"), each representing ownership of a Stock Purchase Contract and
Debt Securities (as defined below), Preferred Securities (as defined below) or
debt obligations of third parties, including U.S. Treasury securities, securing
the holder's obligation to purchase Common Stock under the Stock Purchase
Contracts; (iii) its debentures (the "Trust Debentures") to be purchased with
the proceeds from the sale of preferred securities representing undivided
beneficial ownership interests in the assets of K N Capital Trust II ("Preferred
Securities"), a statutory business trust created under the laws of the State of
Delaware (the "Trust"); (iv) in addition to the Trust Debentures, its
debentures, notes and other debt securities in one or more series, which may be
either senior debt securities or subordinated debt securities ("Debt
Securities"); and (v) Common Stock. In addition the Trust may offer its
Preferred Securities. The aggregate initial offering price of all of the
Securities (as defined below) which may be sold pursuant to this Prospectus will
not exceed $1,419,500,100 or, if applicable, the equivalent thereof in any other
currency or currency unit. The Securities will be offered in amounts, at prices
and on terms to be determined in light of market conditions at the time of sale
and set forth in a supplement to this Prospectus (a "Prospectus Supplement").
The Stock Purchase Contracts, Stock Purchase Units, Trust Debentures, Debt
Securities, Common Stock and Preferred Securities are collectively called the
"Securities."
    
 
                                                        (continued on next page)
                            ------------------------
 
     The Securities may be sold directly by the Company, or in the case of the
Preferred Securities, the Trust, to investors, through agents designated from
time to time or to or through underwriters or dealers. See "Plan of
Distribution." If any agents of the Company or, in the case of the Preferred
Securities, the Trust, or any underwriters are involved in the sale of any
Securities in respect of which this Prospectus is being delivered, the names of
such agents or underwriters and any applicable commissions or discounts will be
set forth in a Prospectus Supplement. The net proceeds to the Company from such
sale also will be set forth in a Prospectus Supplement. See "Use of Proceeds."
                            ------------------------
 
     The Common Stock is traded on the New York Stock Exchange (the "NYSE")
under the symbol "KNE." Any Common Stock sold pursuant to a Prospectus
Supplement will be listed on such exchange, subject to official notice of
issuance. The Prospectus Supplement will state whether any Securities offered
thereby will be listed on any national securities exchange. If such Securities
are not listed on any national securities exchange, there can be no assurance
that there will be a secondary market for any such Securities.
                            ------------------------
 
  THESE SECURITIES HAVE NOT BEEN APPROVED OR DISAPPROVED BY THE SECURITIES AND
 EXCHANGE COMMISSION OR ANY STATE SECURITIES COMMISSION, NOR HAS THE SECURITIES
   AND EXCHANGE COMMISSION OR ANY STATE SECURITIES COMMISSION PASSED UPON THE
ACCURACY OR ADEQUACY OF THIS PROSPECTUS. ANY REPRESENTATION TO THE CONTRARY IS A
                               CRIMINAL OFFENSE.
                            ------------------------
  THIS PROSPECTUS MAY NOT BE USED TO CONSUMMATE SALES OF THE SECURITIES UNLESS
                    ACCOMPANIED BY A PROSPECTUS SUPPLEMENT.
                            ------------------------
            , 1998
<PAGE>   6
 
(continued from previous page)
 
     Certain specific terms of the particular Securities in respect of which
this Prospectus is being delivered will be set forth in an applicable Prospectus
Supplement, including, where applicable, (i) in the case of Stock Purchase
Contracts, the number of shares of Common Stock issuable thereunder, the
purchase price of the Common Stock, the date or dates on which the Common Stock
is required to be purchased by the holders of the Stock Purchase Contracts, any
periodic payments required to be made by the Company to the holders of the Stock
Purchase Contracts or vice versa, and the terms of the offering and sale
thereof, (ii) in the case of Stock Purchase Units, the specific terms of the
Stock Purchase Contracts and any Preferred Securities or debt obligations of
third parties securing the holder's obligation to purchase the Common Stock
under the Stock Purchase Contracts, and the terms of the offering and sale
thereof, (iii) in the case of Trust Debentures or Debt Securities, the specific
designation, aggregate principal amount, authorized denominations, ranking as
senior or subordinated, maturity, interest payment dates, interest rate (which
may be fixed or variable) or method of calculating interest, if any, applicable
Extension Period (as defined below) or interest deferral terms, if any, place or
places where principal, premium, if any, and interest, if any, will be payable,
any terms for mandatory or optional redemption, any sinking fund provisions,
terms for any conversion or exchange into other securities, initial offering or
purchase price, methods of distribution and any other special terms, and (iv) in
the case of Preferred Securities, the specific title, aggregate amount, stated
liquidation preference, number of securities, the rate of payment of periodic
cash distributions ("distributions" or "Distributions") or method of calculating
such rate, applicable Extension Period (as defined below) or distribution
deferral terms, if any, place or places where distributions will be payable, any
terms of redemption, initial offering or purchase price, methods of distribution
and any other special terms. If so specified in the applicable Prospectus
Supplement, the Securities offered thereby may be issued in whole or in part in
the form of one or more temporary or permanent global securities ("Global
Securities").
 
     Unless otherwise set forth in the applicable Prospectus Supplement, the
Trust Debentures will be senior unsecured obligations of the Company and will
rank pari passu in right of payment with all of the Company's other senior
unsecured obligations. If provided in an accompanying Prospectus Supplement, the
Company will have the right to defer payments of interest on the Trust
Debentures by extending the interest payment period thereon at any applicable
time or from time to time for such number of consecutive interest payment
periods (which shall not extend beyond the stated maturity (the "Stated
Maturity") of the Trust Debentures) with respect to each deferral period as may
be specified in such Prospectus Supplement (each, an "Extension Period"). See
"Description of the Trust Debentures -- Option to Extend Interest Payment
Period."
 
     The Company will be the owner of the common securities (the "Common
Securities," and, together with the Preferred Securities, the "Trust
Securities") of the Trust. The payment of distributions with respect to the
Preferred Securities and payments on liquidation or redemption with respect to
the Preferred Securities, in each case out of funds held by the Trust, will be
irrevocably guaranteed by the Company to the extent described herein (the
"Guarantee"). Certain payments in respect of the Common Securities may also be
guaranteed by the Company. See "Description of the Guarantee." Unless otherwise
set forth in the applicable Prospectus Supplement, the obligations of the
Company under the Guarantee will be senior unsecured obligations of the Company
and will rank pari passu with all of the Company's other senior unsecured
obligations. Concurrently with the issuance by the Trust of the Preferred
Securities, the Trust will invest the proceeds thereof and any contributions
made in respect of the Common Securities in the Trust Debentures, which will
have terms corresponding to the terms of the Preferred Securities. The Trust
 
                                        2
<PAGE>   7
 
(continued from previous page)
Debentures will be the sole assets of the Trust, and payments under the Trust
Debentures and those made by the Company in respect of fees and expenses
incurred by the Trust will be the only revenue of the Trust. Upon the occurrence
of certain events as are described herein and in the accompanying Prospectus
Supplement, the Company may redeem the Trust Debentures and cause the redemption
of the Trust Securities. In addition, if provided in the applicable Prospectus
Supplement, the Company may dissolve the Trust at any time and, after
satisfaction of the liabilities to creditors of the Trust as provided by
applicable law, cause the Trust Debentures to be distributed to the holders of
the Trust Securities in liquidation of their interest in the Trust.
 
     Taken together, the Company's obligations under the Trust Debentures, the
Debenture Indenture (as defined herein), the Declaration (as defined herein) and
the Guarantee, in the aggregate, have the effect of providing a full,
irrevocable and unconditional guarantee of payments of distributions and other
amounts due on the Preferred Securities. See "Relationship Among the Preferred
Securities, the Trust Debentures and the Guarantee."
 
                            ------------------------
 
                             AVAILABLE INFORMATION
 
     The Company is subject to the information requirements of the Securities
Exchange Act of 1934, as amended (the "Exchange Act"), and in accordance
therewith files reports, proxy statements and other information with the
Securities and Exchange Commission (the "Commission"). Such reports, proxy
statements, and other information filed by the Company with the Commission can
be inspected and copied at the public reference facilities maintained by the
Commission at Room 1024, Judiciary Plaza, 450 Fifth Street, N.W., Washington,
D.C. 20549 and at the following Regional Offices of the Commission: Chicago
Regional Office, Citicorp Center, 500 West Madison Street, Suite 1400, Chicago,
Illinois 60661; and New York Regional Office, Seven World Trade Center, 13th
Floor, New York, New York 10048. Copies of such material can be obtained from
the Public Reference Section of the Commission, Washington, D.C. 20549 at
prescribed rates. The Commission maintains a Website that contains reports,
proxy and information statements and other materials that are filed through the
Commission's Electronic Data Gathering Analysis and Retrieval System. The
Website can be accessed at http://www.sec.gov. In addition, reports, proxy
statements and other information concerning the Company can be inspected at the
NYSE, 20 Broad Street, New York, New York 10005, on which exchange the Common
Stock is listed.
 
     This Prospectus constitutes a part of two Registration Statements on Form
S-3 (together with all amendments and exhibits thereto, the "Registration
Statement") filed by the Company and the Trust with the Commission under the
Securities Act of 1933, as amended (the "Securities Act"). This Prospectus omits
certain of the information contained in the Registration Statement, and
reference is hereby made to the Registration Statement for further information
with respect to the Company and the securities offered hereby. Any statements
contained herein concerning the provisions of any document filed as an exhibit
to the Registration Statement or otherwise filed with the Commission are not
necessarily complete, and in each instance reference is made to the copy of such
document so filed. Each such statement is qualified in its entirety by such
reference.
 
     No separate financial statements of the Trust have been included herein.
The Company and the Trust do not consider that such financial statements would
be material to holders of the Preferred Securities because the Trust is a newly
formed special purpose entity, has no operating history or independent
operations and is not engaged in and does not propose to engage in any activity
other than its holding as trust assets the Trust Debentures and the issuance of
the Trust Securities. See "The Trust," "Description of the Trust Debentures,"
"Description of the Preferred Securities" and "Description of the Guarantee."
 
     The Trust is currently not subject to the information reporting
requirements of the Exchange Act.
 
                                        3
<PAGE>   8
 
                INCORPORATION OF CERTAIN DOCUMENTS BY REFERENCE
 
     The following documents filed by the Company with the Commission (File No.
1-6446) pursuant to the Exchange Act are incorporated by reference and made a
part hereof:
 
          (a) the Company's Annual Report on Form 10-K for the year ended
     December 31, 1997;
 
   
          (b) the Company's Quarterly Reports on Form 10-Q for the quarters
     ended March 31, 1998 and June 30, 1998;
    
 
   
          (c) the Company's Current Reports on Form 8-K dated January 5, 1998,
     January 16, 1998, as amended by the Current Report on Form 8-K/A dated
     February 12, 1998, March 6, 1998, April 24, 1998, June 5, 1998 and October
     7, 1998; and
    
 
          (d) the description of the Preferred Share Purchase Rights and the
     Common Stock contained in the Company's Registration Statements on Form
     8-A.
 
     All documents subsequently filed by the Company pursuant to Section 13(a),
13(c), 14 or 15(d) of the Exchange Act, after the date of this Prospectus and
prior to the termination of the offering of the Securities pursuant hereto,
shall be deemed to be incorporated by reference herein and to be a part hereof
from the date of filing of such document. Any statement contained herein or in a
document incorporated or deemed to be incorporated by reference herein shall be
deemed to be modified or superseded for purposes of this Prospectus to the
extent that a statement contained herein or in any other subsequently filed
document which also is or is deemed to be incorporated by reference herein
modifies or supersedes such statement. Any such statement so modified or
superseded shall not be deemed, except as so modified or superseded, to
constitute a part of this Prospectus.
 
     The Company will provide without charge to any person, including any
beneficial owner of Securities, to whom this Prospectus is delivered, upon
written or oral request of such person, a copy of any and all of the documents
referred to above which have been incorporated by reference in this Prospectus
(other than exhibits to such documents, unless such exhibits are specifically
incorporated by reference into such documents). Such requests should be directed
to the office of the Vice President and Treasurer, K N Energy, Inc., 370 Van
Gordon Street, P.O. Box 281304, Lakewood, Colorado 80228-8304, telephone number
(303) 989-1740.
 
                                K N ENERGY, INC.
 
     K N Energy is an integrated energy services provider whose operations
include the gathering, processing, transportation and storage of natural gas and
the marketing of natural gas and natural gas liquids. The Company also markets
innovative products and services, such as the Simple Choice(sm) menu of products
and call center services designed for residential consumers, utilities, and
small businesses through its 50% owned en-able(sm), LLC affiliate.
 
     K N was incorporated under the laws of the State of Kansas in 1927. The
address of its principal executive offices is 370 Van Gordon Street, P. O. Box
281304, Lakewood, Colorado 80228-8304 and its telephone number is (303)
989-1740.
 
     Additional information concerning the Company and its subsidiaries is
included in the Company reports and other documents incorporated by reference in
this Prospectus. See "Available Information" and "Incorporation of Certain
Documents by Reference."
 
                                   THE TRUST
 
     The Trust is a statutory business trust created under Delaware law pursuant
to (i) a declaration of trust, dated as of January 15, 1998, and entered into by
the Company, as sponsor (the "Sponsor") and the trustee named herein (amended
and restated on June 1, 1998) and (ii) the filing of a certificate of trust with
the Secretary of State of the State of Delaware on January 15, 1998. The
declaration will be amended and restated
 
                                        4
<PAGE>   9
 
in its entirety (as so amended and restated, the "Declaration"), substantially
in the form filed as an exhibit to the Registration Statement of which this
Prospectus forms a part, as of the date the Preferred Securities of such Trust
are initially issued. The Declaration will be qualified under the Trust
Indenture Act of 1939, as amended (the "Trust Indenture Act"). Upon issuance of
the Preferred Securities, the purchasers thereof will own all of the Preferred
Securities. K N Energy will directly or indirectly acquire all of the Common
Securities, which will have an aggregate liquidation amount equal to 3% of the
total capital of the Trust. The Preferred Securities will rank pari passu, and
payments will be made thereon on a pro rata basis, with the Common Securities,
except that upon the occurrence and during the continuance of a Declaration
Event of Default, the rights of the holders of the Common Securities to receive
payments of periodic distributions and payments upon liquidation, redemption and
otherwise will be subordinated to the rights of the holders of the Preferred
Securities. The Trust exists for the exclusive purposes of (i) issuing the Trust
Securities representing undivided beneficial interests in the assets of the
Trust, (ii) investing the gross proceeds of the Trust Securities in the Trust
Debentures and (iii) engaging in only those other activities necessary or
incidental thereto.
 
     The Trust's business and affairs will be conducted by the K N Trustees (as
defined below) and the administrators ("Administrators"), as set forth in the
Declaration. Pursuant to the Declaration, the number of K N Trustees will
initially be two. One trustee will be a financial institution that maintains its
principal place of business in the State of Delaware (the "Delaware Trustee").
The other trustee (the "Institutional Trustee" and, together with the Delaware
Trustee, the "K N Trustees") will be a financial institution that is
unaffiliated with K N Energy and will serve as institutional trustee under the
Declaration and as indenture trustee for the purposes of compliance with the
provisions of the Trust Indenture Act. Initially, Wilmington Trust Company, a
Delaware banking corporation, will be both the Delaware Trustee and the
Institutional Trustee until removed or replaced by the holder of the Common
Securities (or in certain circumstances the holders of a majority in liquidation
amount of the Preferred Securities). Wilmington Trust Company will act as
trustee (the "Guarantee Trustee") under the Guarantee and as Debenture Trustee
(as defined herein) under the Debenture Indenture (as defined herein). The
Administrators will be three individuals who are employees or officers of or
affiliated with K N Energy and will act as administrators with respect to the
Trust. The Administrators will be selected by the holders of a majority in
liquidation amount of the Common Securities. The Administrators will have only
those ministerial duties set forth in the Declaration with respect to
accomplishing the purposes of the Trust and are not intended to be trustees or
fiduciaries with respect to the Trust or the holders of Preferred Securities.
 
     The Institutional Trustee will hold title to the Trust Debentures for the
benefit of the holders of the Trust Securities, and the Institutional Trustee
will have the power to exercise all rights, powers and privileges under the
Debenture Indenture as the holder of the Trust Debentures. In addition, the
Institutional Trustee will maintain exclusive control of a segregated
non-interest bearing bank account (the "Property Account") to hold all payments
made in respect of the Trust Debentures for the benefit of the holders of the
Trust Securities. The Institutional 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 for the benefit of the holders of the Preferred
Securities. K N Energy, as the direct or indirect holder of all the Common
Securities, will have the right to appoint, remove or replace any Administrator
and to increase or decrease the number of Administrators. Holders of the Common
Securities will have the right to replace the Institutional Trustee (or, upon
the occurrence and continuance of an event of default under the Declaration, the
holders of a majority in liquidation amount of the Preferred Securities),
provided that the successor Institutional Trustee shall be a corporation with
trust powers organized under the laws of the United States or any State thereof
with a combined capital and surplus of at least $50 million. Pursuant to the
Debenture Indenture (as defined below), K N Energy, as borrower, will pay all
fees and expenses related to the Trust and the offering of the Trust Securities.
 
     The rights of the holders of the Preferred Securities, including economic
rights, rights to information and voting rights, are set forth in the
Declaration and the Delaware Business Trust Act (the "Trust Act"). The principal
place of business of the Trust is c/o K N Energy, Inc., 370 Van Gordon Street,
P.O. Box 281304, Lakewood, Colorado 80228-8304, and its telephone number is
(303) 989-1740.
 
                                        5
<PAGE>   10
 
                                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
(including Trust Debentures issued to the Trust in connection with the
investment by the Trust of all of the proceeds from the sale of the Preferred
Securities) offered pursuant to this Prospectus and such Prospectus Supplement
(the "Offered Securities") will be used by the Company to refinance indebtedness
incurred in connection with the acquisition of MidCon Corp. from Occidental
Petroleum Corporation. The remainder of the net proceeds will be used for
general corporate purposes. Any specific allocation of the net proceeds of an
offering of Securities by the Company to a specific purpose will be determined
at the time of such offering and will be described in the related Prospectus
Supplement.
 
                      RATIOS OF EARNINGS TO FIXED CHARGES
 
     The following table sets forth the Company's consolidated ratios of
earnings to fixed charges for the periods shown.
 
   
<TABLE>
<CAPTION>
    SIX MONTHS
  ENDED JUNE 30,        YEARS ENDED DECEMBER 31,
  ---------------   --------------------------------
       1998         1997   1996   1995   1994   1993
       ----         ----   ----   ----   ----   ----
  <S>               <C>    <C>    <C>    <C>    <C>
       1.43         2.72   3.21   3.07   1.69   2.41
</TABLE>
    
 
   
     The ratios of earnings to fixed charges were computed by dividing earnings
by fixed charges. For this purpose, earnings are the sum of net income, taxes
and fixed charges. Fixed charges are interest, amortization of debt discount,
premium and expense, preferred stock dividends of a subsidiary, and the
estimated interest portion of rental charges. The allowance for borrowed funds
used during construction recognized for gas utility operations has been added to
fixed charges and is included in earnings. The ratio of earnings to fixed
charges for the six months ended June 30, 1998 is not necessarily indicative of
such ratio that would be expected for the full year ended December 31, 1998.
    
 
                                        6
<PAGE>   11
 
                    DESCRIPTION OF THE PREFERRED SECURITIES
 
     The Trust may issue only one series of Preferred Securities having terms
described in the Prospectus Supplement relating thereto. The Declaration
authorizes the Administrators of the Trust to issue on behalf of the Trust one
series of Preferred Securities. The Declaration will be qualified as an
indenture under the Trust Indenture Act. The 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 the Declaration or made part of the Declaration by the Trust
Indenture Act or the Trust Act. Reference is made to any Prospectus Supplement
relating to the Preferred Securities of the Trust for specific terms, including
(i) the specific designation of the Preferred Securities, (ii) the number of
Preferred Securities, (iii) the annual distribution rate (or method of
calculation thereof) for Preferred Securities, the date or dates upon which such
distributions shall be payable and the record date or dates for the payment of
such distributions, (iv) whether distributions of Preferred Securities shall be
cumulative, and, in the case of Preferred Securities having such cumulative
distribution rights, the date or dates or method of determining the date or
dates from which distributions of Preferred Securities shall be cumulative, (v)
the amount or amounts which shall be paid out of the assets of the Trust to the
holders of Preferred Securities upon voluntary or involuntary dissolution,
winding-up or termination of the Trust, (vi) the obligation or right, if any, of
the Trust to purchase or redeem Preferred Securities and the price or prices at
which, the period or periods within which and the terms and conditions upon
which Preferred Securities shall or may be purchased or redeemed, in whole or in
part, pursuant to such obligation or right, (vii) the voting rights, if any, of
Preferred Securities in addition to those required by law, including the number
of votes per Preferred Security and any requirement for the approval by the
holders of Preferred Securities, as a condition to specified actions or
amendments to the Declaration, (viii) the terms and conditions, if any, upon
which Preferred Securities issued by the Trust may be converted into Common
Stock of the Company, including the conversion price per share and the
circumstances, if any, under which such conversion right will expire, (ix) the
terms and conditions, if any, upon which the Trust Debentures may be distributed
to holders of Trust Securities, (x) if applicable, any securities exchange upon
which the Preferred Securities shall be listed, and (xi) any other relevant
rights, preferences, privileges, limitations or restrictions of Preferred
Securities issued by the Trust consistent with the Declaration or with
applicable law. All Preferred Securities offered hereby will be guaranteed by
the Company as and to the extent set forth below under "Description of the
Guarantee." Certain United States federal income tax considerations applicable
to the offering of the Preferred Securities will be described in the Prospectus
Supplement relating thereto.
 
     In connection with the issuance of the Preferred Securities, the Trust will
issue Common Securities. The Declaration authorizes the Administrators of the
Trust to issue on behalf of the Trust the Common Securities having such terms
including distributions, redemption, voting, liquidation rights or such
restrictions as shall be set forth therein. The terms of the Common Securities
issued by the Trust will be substantially identical to the terms of the
Preferred Securities issued by the Trust and the Common Securities will rank
pari passu, and payments will be made thereon on a pro rata basis with the
Preferred Securities except that if an event of default under the Declaration (a
"Declaration Event of Default") occurs and is continuing, the rights of the
holders of the Common Securities to payments in respect of distributions and
payments upon liquidation, redemption and maturity will be subordinated to the
rights of the holders of the Preferred Securities. A Declaration Event of
Default will occur upon a Debenture Indenture Event of Default (as defined
below). Except in certain limited circumstances, the Common Securities issued by
the Trust will also carry the right to vote and to appoint, remove or replace
any of the K N Trustees of the Trust. All of the Common Securities of the Trust
will be directly or indirectly owned by the Company.
 
                      DESCRIPTION OF THE TRUST DEBENTURES
 
     The Trust Debentures are to be issued under an indenture, as supplemented
or amended from time to time (as so supplemented or amended, the "Debenture
Indenture"), between the Company and Wilmington Trust Company, as trustee (the
"Debenture Trustee"). This summary of certain terms and provisions of the Trust
Debentures and the Debenture Indenture is not necessarily complete, and
reference is hereby made to the copy of the form of the Debenture Indenture
which is filed as an exhibit to the Registration Statement of which this
Prospectus forms a part, and to the Trust Indenture Act. Whenever particular
defined terms of the
 
                                        7
<PAGE>   12
 
Debenture Indenture are referred to in this Section or in a Prospectus
Supplement, such defined terms are incorporated herein or therein by reference.
 
     The Company's Debt Securities are separately described in this Prospectus
under the caption "Description of the Debt Securities."
 
GENERAL
 
     Unless otherwise specified in the applicable Prospectus Supplement, the
Trust Debentures will be issued as unsecured debt under the Debenture Indenture
and will rank pari passu in right of payment with all of the Company's other
senior unsecured obligations. Except as otherwise provided in the applicable
Prospectus Supplement, the Debenture Indenture does not limit the incurrence or
issuance of other secured or unsecured debt of the Company, whether under the
Debenture Indenture, any other indenture that the Company may enter into in the
future or otherwise.
 
     The Trust Debentures will be issuable in one series pursuant to an
indenture supplemental to the Debenture Indenture or a resolution of the
Company's Board of Directors or a committee thereof.
 
     Unless otherwise stated in the applicable Prospectus Supplement, the
obligations of K N Energy under the Trust Debentures will be senior to its 8.56%
Series B Junior Subordinated Deferrable Interest Trust Debentures due April 15,
2027 (the "1997 Subordinated Trust Debentures"), which were issued in October
1997 in the aggregate principal amount of $103,100,000 and will be senior to its
7.63% Junior Subordinated Debentures due April 15, 2028 (the "1998 Subordinated
Trust Debentures"), which were issued in April 1998 in the aggregate principal
amount of $180,500,000, and the obligations of K N Energy under the Guarantee
will be senior to its guarantee (the "1997 Guarantee") in relation to the 8.56%
Series B Capital Trust Pass-through Securities of K N Capital Trust I (the "1997
Capital Securities"), which were issued in October 1997 in the aggregate
liquidation amount of $100,000,000, and the obligations of K N Energy under the
Guarantee will be senior to its guarantee (the "1998 Guarantee") in relation to
the 7.63% Capital Securities of K N Capital Trust III (the "1998 Capital
Securities"), which were issued in April 1998 in the aggregate liquidation
amount of $175,000,000.
 
     The Trust Debentures may be distributed pro rata to the holders of such
Trust Securities in connection with the dissolution of the Trust upon the
occurrence of certain events described herein or in the Prospectus Supplement
relating to the Trust Securities. Only one series of Trust Debentures will be
issued to the Trust or a K N Trustee of such Trust in connection with the
issuance of Trust Securities by the Trust.
 
     The applicable Prospectus Supplement will describe the following terms of
the Trust Debentures: (i) the title of the Trust Debentures; (ii) any limit upon
the aggregate principal amount of the Trust Debentures; (iii) the date on which
the principal of the Trust Debentures is payable or the method of determination
thereof; or the right, if any, of the Company to defer payment of principal;
(iv) the rate, if any, at which the Trust Debentures shall bear interest
(including reset rates, if any, and the method by which any such rate will be
determined), the dates on which any such interest shall be payable (the
"Interest Payment Dates"), the right, if any, of the Company to defer or extend
an Interest Payment Date and the regular record date for any interest payable on
any Interest Payment Date or the method by which any of the foregoing shall be
determined; (v) the place where the principal of and premium, if any, and
interest, if any, on the Trust Debentures will be payable and where, subject to
the terms of the Debenture Indenture as described below under "-- Denominations,
Registration and Transfer," the Trust Debentures may be presented for
registration of transfer or exchange and the place or places where notices and
demands to or upon the Company in respect of the Trust Debentures and the
Debenture Indenture may be made ("Place of Payment"); (vi) any period or periods
within, or date or dates on which, the price or prices at which and the terms
and conditions upon which Trust Debentures may be redeemed, in whole or in part,
at the option of the Company or a holder thereof; (vii) the obligation or the
right, if any, of the Company or a holder thereof to redeem, purchase or repay
the Trust Debentures and the period or periods within which, the price or prices
(the "Redemption Price") at which, the currency or currencies (including
currency unit or units) in which and the other terms and conditions upon which
the Trust Debentures shall be redeemed, repaid or purchased, in whole or in
part, pursuant to such obligation; (viii) the denominations in which any Trust
Debentures shall be issuable if other
 
                                        8
<PAGE>   13
 
than denominations of $1,000 and any integral multiple thereof; (ix) if other
than in U.S. Dollars, the currency or currencies (including currency unit or
units) in which the principal of (and premium, if any) and interest, if any, on
the Trust Debentures shall be payable, or in which the Trust Debentures shall be
denominated; (x) any additions, modifications or deletions in the events of
default or covenants of the Company specified in the Debenture Indenture with
respect to the Trust Debentures; (xi) if other than the principal amount
thereof, the portion of the principal amount of Trust Debentures that shall be
payable upon declaration of acceleration of the maturity thereof; (xii) any
additions or changes to the Debenture Indenture with respect to a series of
Trust Debentures as shall be necessary to permit or facilitate the issuance of
such series in bearer form, registrable or not registrable as to principal, and
with or without interest coupons; (xiii) any index or indices used to determine
the amount of payments of principal of and premium, if any, on the Trust
Debentures and the manner in which such amounts will be determined; (xiv) the
terms and conditions relating to the issuance of a temporary Global Security
representing all of the Trust Debentures of such series and exchange of such
temporary Global Security for definitive Trust Debentures of such series; (xv)
whether the Trust Debentures of the series shall be issued in whole or in part
in the form of one or more Global Securities and, in such case, the depositary
for such Global Securities; (xvi) the appointment of any trustee, registrar,
paying agent or agents; (xvii) the terms and conditions of any obligation or
right of the Company or a holder to convert or exchange Trust Debentures into
Preferred Securities or other securities; (xviii) the relative degree, if any,
to which such Trust Debentures of the series shall be senior to or be
subordinated to other series of such Trust Debentures or other indebtedness of
the Company in right of payment, whether such other series of Trust Debentures
or other indebtedness are outstanding or not; and (xix) any other terms of the
Trust Debentures not inconsistent with the provisions of the Debenture
Indenture. (Section 2.1) Unless otherwise indicated in the applicable Prospectus
Supplement, the Trust Debentures will not be subject to any sinking fund.
 
     Trust Debentures may be sold at a substantial discount below their stated
principal amount, bearing no interest or interest at a rate which at the time of
issuance is below market rates. Certain material United States federal income
tax consequences and special considerations applicable to any such Trust
Debentures will be described in the applicable Prospectus Supplement.
 
     If the purchase price of any of the Trust Debentures is payable in one or
more foreign currencies or currency units or if any Trust Debentures are
denominated in one or more foreign currencies or currency units or if the
principal of, premium, if any, or interest, if any, on any Trust Debentures is
payable in one or more foreign currencies or currency units, the restrictions,
elections, certain material United States federal income tax considerations,
specific terms and other information with respect to such issue of Trust
Debentures and such foreign currency or currency units will be set forth in the
applicable Prospectus Supplement.
 
     If any index is used to determine the amount of payments of principal,
premium, if any, or interest on any series of Trust Debentures, certain material
United States federal income tax, accounting and other considerations applicable
thereto will be described in the applicable Prospectus Supplement.
 
DENOMINATIONS, REGISTRATION AND TRANSFER
 
     Unless otherwise specified in the applicable Prospectus Supplement, the
Trust Debentures will be issuable only in registered form without coupons in
denominations of $1,000 and any integral multiple thereof. (Section 2.3) Trust
Debentures will be exchangeable for other Trust Debentures of the same issue, of
any authorized denominations of a like aggregate principal amount, the same
original issue date ("Original Issue Date"), the same Stated Maturity and
bearing the same interest rate. (Section 2.5)
 
     Trust Debentures may be presented for exchange as provided above, and may
be presented for registration of transfer (with the form of transfer endorsed
thereon, or a satisfactory written instrument of transfer, duly executed), at
the office of the appropriate Securities Registrar or at the office of any
transfer agent designated by the Company for such purpose with respect to any
series of Trust Debentures and referred to in the applicable Prospectus
Supplement, without service charge and upon payment of any taxes and other
governmental charges as described in the Debenture Indenture. The Company will
appoint the Debenture Trustee as Securities Registrar under the Debenture
Indenture. Such transfer or exchange will be effected
 
                                        9
<PAGE>   14
 
upon the Security Registrar or such transfer agent, as the case may be, being
satisfied with the documents of title and the identity of the person making the
request. (Section 2.5) If the applicable Prospectus Supplement refers to any
transfer agents (in addition to the Securities Registrar) initially designated
by the Company with respect to the Trust Debentures, the Company 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, provided that the Company
maintains a transfer agent in each Place of Payment for the Trust Debentures.
The Company may at any time designate additional transfer agents with respect to
the Trust Debentures.
 
     In the event of any redemption, neither the Company nor the Debenture
Trustee shall be required to (i) issue, register the transfer of or exchange of
the Trust Debentures during a period beginning at the opening of business 15
days before the day of selection for redemption of the Trust Debentures, and
ending at the close of business on the day of mailing of the relevant notice of
redemption or (ii) transfer or exchange any Trust Debentures so selected for
redemption, except, in the case of any Trust Debentures being redeemed in part,
any portion thereof not to be redeemed. (Section 2.5)
 
OPTION TO EXTEND INTEREST PAYMENT PERIOD
 
     If provided in the applicable Prospectus Supplement, the Company shall have
the right, at any time and from time to time during the term of the Trust
Debentures, to defer the payment of interest for such number of consecutive
interest payment periods as may be specified in the applicable Prospectus
Supplement, subject to the terms, conditions and covenants, if any, specified in
such Prospectus Supplement, provided that such Extension Period may not extend
beyond the Stated Maturity of the final installment of principal of the Trust
Debentures. Certain material United States federal income tax consequences and
special considerations applicable to the Trust Debentures will be described in
the applicable Prospectus Supplement.
 
CERTAIN COVENANTS
 
     The Debenture Indenture contains certain covenants regarding, among other
matters, corporate existence, payment of taxes and reports to holders of the
Trust Debentures. If and to the extent indicated in the applicable Prospectus
Supplement, these covenants may be removed or additional covenants added with
respect to the Trust Debentures. (Article 9)
 
DEBENTURE INDENTURE EVENTS OF DEFAULT
 
     The Debenture Indenture provides that any one or more of the following
described events, which has occurred and is continuing, constitutes a "Debenture
Indenture Event of Default" with respect to the Trust Debentures: (i) failure
for 30 days to pay interest on the Trust Debentures, including any compound
interest, in respect thereof or, any additional interest, if any, when due;
provided that a valid extension of an interest payment period will not
constitute a default in the payment of interest for this purpose; (ii) failure
to pay principal of or premium, if any, on the Trust Debentures when due whether
at maturity, upon redemption, by declaration of acceleration or otherwise; (iii)
failure to observe or perform any other covenant contained in the Debenture
Indenture for 90 days after notice to K N Energy by the Debenture Trustee or by
the holders of not less than 25% in aggregate outstanding principal amount of
the Trust Debentures; (iv) the dissolution, winding up or termination of the
Trust, except in connection with the distribution of Trust Debentures to the
holders of Preferred Securities in liquidation of the Trust upon the redemption
of all outstanding Preferred Securities or in connection with certain mergers,
consolidations or amalgamations permitted by the Declaration; or (v) certain
events in bankruptcy, insolvency or reorganization of K N Energy. (Section 4.1)
 
     If any Debenture Indenture Event of Default shall occur and be continuing,
the Debenture Trustee or the holders of not less than 25% in aggregate principal
amount of the outstanding Trust Debentures may declare the principal of and
interest on the Trust Debentures due and payable immediately; provided, that,
after such acceleration, but before a judgment or decree based on acceleration,
the holders of a majority in aggregate principal amount of outstanding Trust
Debentures may, under certain circumstances, rescind and annul such acceleration
if all Debenture Indenture Events of Default, other than the nonpayment of
accelerated principal, have been cured or waived as provided in the Debenture
Indenture. (Section 4.2)
 
                                       10
<PAGE>   15
 
     A default under any other indebtedness of K N Energy would not constitute a
Debenture Indenture Event of Default under the Trust Debentures.
 
     Subject to the provisions of the Debenture Indenture relating to the duties
of the Debenture Trustee in case a Debenture Indenture Event of Default occurs
and is continuing, the Debenture Trustee will be under no obligation to exercise
any of its rights or powers under the Debenture Indenture at the request or
direction of any holders of Trust Debentures, unless such holders shall have
offered to the Debenture Trustee reasonable indemnity. Subject to such
provisions for the indemnification of the Debenture Trustee, the holders of a
majority in aggregate principal amount of the outstanding Trust Debentures will
have the right to direct the time, method and place of conducting any proceeding
for any remedy available to the Debenture Trustee, or exercising any trust or
power conferred on the Debenture Trustee. (Section 4.12)
 
     No holder of any Trust Debentures will have any right to institute any
proceeding with respect to the Debenture Indenture or for any remedy thereunder,
unless such holder shall have previously given to the Debenture Trustee written
notice of a continuing Debenture Indenture Event of Default and, if the
Institutional Trustee is not the sole holder of Trust Debentures, unless the
holders of at least 25% in aggregate principal amount of the outstanding Trust
Debentures shall also have made written request, and offered reasonable
indemnity, to the Debenture Trustee to institute such proceeding as Debenture
Trustee, and the Debenture Trustee shall not have received from the holders of a
majority in aggregate principal amount of the outstanding Trust Debentures a
direction inconsistent with such request. (Section 4.7) However, such
limitations do not apply to a suit instituted by a holder of a Trust Debenture
for enforcement of payment of the principal of or interest on such Trust
Debenture on or after the respective due dates expressed in such Trust
Debenture. (Section 4.8)
 
     The Debenture Indenture contains provisions permitting the holders of a
majority in aggregate principal amount of the Trust Debentures, on behalf of all
of the holders of the Trust Debentures, to waive any past default in the
performance of any of the covenants contained in the Debenture Indenture, except
a default in the payment of principal or interest on any of the Trust
Debentures. (Section 4.13)
 
MODIFICATIONS AND AMENDMENTS OF THE DEBENTURE INDENTURE
 
     The Debenture Indenture contains provisions permitting K N Energy and the
Debenture Trustee, with the consent of the holders of not less than a majority
in aggregate principal amount of the outstanding Trust Debentures, to modify the
Debenture Indenture or the rights of the holders of Trust Debentures; provided,
however, that no such modification may, without the consent of the holder of
each outstanding Trust Debenture affected thereby, (i) extend the Stated
Maturity of the Trust Debentures or reduce the principal amount thereof, or
reduce the rate or extend the time for payment of interest thereon, or reduce
any premium payable upon the redemption thereof, or (ii) reduce the percentage
in aggregate principal amount of outstanding Trust Debentures, the holders of
which are required to consent to any such supplemental indenture. (Section 8.2)
 
     In addition, K N Energy and the Debenture Trustee may execute, without the
consent of any holder of Trust Debentures, any supplemental indenture (i) to
cure any ambiguities, (ii) to comply with the Trust Indenture Act and (iii) for
certain other customary purposes. (Section 8.1)
 
SATISFACTION AND DISCHARGE; DEFEASANCE
 
     Unless otherwise specified in the applicable Prospectus Supplement, when,
among other things, all Trust Debentures not previously delivered to the
Debenture Trustee for cancellation (i) have become due and payable or (ii) will
become due and payable at their Stated Maturity within one year, and the Company
deposits or causes to be deposited with the Debenture Trustee, as trust funds in
trust for the purpose, an amount in the currency or currencies in which the
Trust Debentures are payable sufficient to pay and discharge the entire
indebtedness on the Trust Debentures not previously delivered to the Debenture
Trustee for cancellation, for the principal (and premium, if any) and interest
to the date of the deposit or to the Stated Maturity, as the case may be, then
the Debenture Indenture will cease to be of further effect (except as to the
Company's obligations to pay all other sums due pursuant to the Debenture
Indenture, rights of registration of
 
                                       11
<PAGE>   16
 
transfer or exchange of Trust Debentures and rights with respect to temporary,
and mutilated, lost or destroyed Trust Debentures), and the Company will be
deemed to have satisfied and discharged the Debenture Indenture. (Section 3.1)
 
     Unless otherwise specified in the applicable Prospectus Supplement, the
Company may elect either (a) to terminate (and be deemed to have satisfied) all
its obligations with respect to any series of Trust Debentures (except for the
obligations to register the transfer or exchange of such Trust Debentures, to
replace mutilated, destroyed, lost or stolen Trust Debentures, to maintain an
office or agency in respect of the Trust Debentures and to compensate and
indemnify the Debenture Trustee ("defeasance")) or (b) to be released from its
obligations with respect to certain covenants, ("covenant defeasance"), upon the
deposit with the Debenture Trustee, in trust for such purpose, of money and/or
U.S. Government Obligations (as defined in the Debenture Indenture) which
through the payment of principal and interest in accordance with their terms
will provide money, in an amount sufficient (in the opinion of a nationally
recognized firm of independent public accountants) to pay principal of, interest
on and any other amounts payable in respect of the outstanding Trust Debentures.
(Sections 3.3, 3.4, 3.5 and 3.6) Such a trust may be established only if, among
other things, the Company has delivered to the Debenture Trustee an opinion of
counsel (as specified in the Debenture Indenture) with regard to certain
matters, including an opinion to the effect that the holders of such Trust
Debentures will not recognize income, gain or loss for United States federal
income tax purposes as a result of such deposit and discharge and will be
subject to United States federal income tax on the same amounts and in the same
manner and at the same times as would have been the case if such deposit and
defeasance or covenant defeasance, as the case may be, had not occurred.
(Section 3.6)
 
INFORMATION CONCERNING THE DEBENTURE TRUSTEE
 
     The Debenture Trustee, prior to default, undertakes to perform only such
duties as are specifically set forth in the Debenture 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 Debenture Trustee is under no obligation to exercise any of the powers
vested in it by the Debenture Indenture at the request of any holder of Trust
Debentures, unless offered reasonable indemnity by such holder against the
costs, expenses and liabilities that might be incurred thereby. The Debenture
Trustee is not required to expend or risk its own funds or otherwise incur
personal financial liability in the performance of its duties if the Debenture
Trustee reasonably believes that repayment or adequate indemnity is not
reasonably assured to it. (Sections 5.1 and 5.2)
 
     The Debenture Indenture also contains limitations on the right of the
Debenture Trustee, as a creditor of K N Energy, 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. (Section 5.11) In addition, the Debenture
Trustee may be deemed to have a conflicting interest and may be required to
resign as Debenture Trustee if at the time of a default under the Debenture
Indenture it is a creditor of K N Energy. (Section 5.9) K N Energy may from time
to time maintain deposit accounts and conduct its banking transactions with the
Debenture Trustee in the ordinary course of business.
 
     Wilmington Trust Company is also the trustee under the indenture relating
to the 1997 Subordinated Trust Debentures and the 1998 Subordinated Trust
Debentures. Pursuant to the Trust Indenture Act, should a default occur with
respect to any of the 1997 Subordinated Trust Debentures, the 1998 Subordinated
Trust Debentures or the Trust Debentures, then Wilmington Trust Company would be
required to resign as trustee under one of the indentures within 90 days of such
default, unless such defaults were cured, duly waived or otherwise eliminated.
 
GOVERNING LAW
 
     The Debenture Indenture and the Trust Debentures will be governed by, and
construed in accordance with, the laws of the State of New York. (Section 1.13)
 
                                       12
<PAGE>   17
 
                          DESCRIPTION OF THE GUARANTEE
 
     Set forth below is a summary of information concerning the Guarantee, which
will be executed and delivered by K N Energy for the benefit of the holders from
time to time of Preferred Securities. The Guarantee will be qualified under the
Trust Indenture Act. Wilmington Trust Company, as the Guarantee Trustee, will
hold the Guarantee for the benefit of the holders of the Preferred Securities.
The following summary is not necessarily complete, and reference is hereby made
to the copy of the form of the Guarantee (including the definitions therein of
certain terms), which is filed as an exhibit to the Registration Statement of
which this Prospectus forms a part, and to the Trust Indenture Act. Whenever
particular defined terms of the Guarantee are referred to in this Prospectus,
such defined terms are incorporated herein by reference.
 
GENERAL
 
     Pursuant to and to the extent set forth in the Guarantee, unless otherwise
specified in the applicable Prospectus Supplement, K N Energy will agree to pay
in full to the holders of the Preferred Securities (except to the extent paid by
the Trust), as and when due, regardless of any defense, right of set off or
counterclaim that the Trust may have or assert, the following payments (the
"Guarantee Payments"), without duplication: (i) any accumulated and unpaid
distributions that are required to be paid on the Preferred Securities to the
extent the Trust has funds available therefor, (ii) the Redemption Price, plus
accumulated and unpaid distributions, with respect to any Preferred Securities
called for redemption by the Trust, to the extent the Trust has funds available
therefor and (iii) upon a voluntary or involuntary liquidation, dissolution,
winding-up or termination of the Trust (other than in connection with the
distribution of Trust Debentures to the holders of Trust Securities or the
redemption of all the Preferred Securities), the lesser of (a) the aggregate of
the liquidation amount and all accumulated and unpaid distributions on the
Preferred Securities to the date of payment to the extent the Trust has funds
available therefor and (b) the amount of assets of the Trust remaining available
for distribution to holders of Preferred Securities upon the liquidation of the
Trust. The holders of a majority in liquidation amount of the Preferred
Securities have the right to direct the time, method and place of conducting any
proceeding for any remedy available to the Guarantee Trustee or to direct the
exercise of any trust or power conferred upon the Guarantee Trustee under the
Guarantee. If the Guarantee Trustee fails to enforce the Guarantee, any holder
of Preferred Securities may directly institute a legal proceeding against K N
Energy to enforce the obligations of K N Energy under the Guarantee without
first instituting a legal proceeding against the Trust, the Guarantee Trustee or
any other person or entity. If K N Energy were to default on its obligation to
pay amounts payable on the Trust Debentures, the Trust would lack available
funds for the payment of distributions or amounts payable on redemption of the
Preferred Securities or otherwise, and in such event holders of the Preferred
Securities would not be able to rely upon the Guarantee for payment of such
amounts. Instead, a holder of the Preferred Securities would be required to rely
on the enforcement (1) by the Institutional Trustee of its rights, as registered
holder of the Trust Debentures, against K N Energy pursuant to the terms of the
Trust Debentures or (2) by such holder of Preferred Securities of its right
against K N Energy to enforce payment on the Trust Debentures. See "Description
of the Trust Debentures." The Declaration provides that each holder of Preferred
Securities, by acceptance thereof, if any, agrees to the provisions of the
Guarantee, including the subordination provisions thereof, if any, and the
Debenture Indenture.
 
     The Guarantee will not apply to any payment of distributions or Redemption
Price, or to payments upon the dissolution, winding-up or termination of the
Trust, except to the extent the Trust shall have funds available therefor. If K
N Energy does not make interest payments on the Trust Debentures, the Trust will
not pay distributions on the Preferred Securities and will not have funds
available therefor. See "Description of the Trust Debentures." Unless otherwise
set forth in the applicable Prospectus Supplement, the Guarantee, when taken
together with K N Energy's obligations under the Trust Debentures, the Debenture
Indenture and the Declaration, including its obligations under the Debenture
Indenture to pay costs, expenses, debts and liabilities of the Trust (other than
with respect to the Trust Securities) will provide a full and unconditional
guarantee on a senior unsecured basis by K N Energy of payments due on the
Preferred Securities.
 
     K N Energy has also agreed separately to irrevocably and unconditionally
guarantee the obligations of the Trust with respect to the Common Securities
(the "Common Securities Guarantee") to the same extent as
 
                                       13
<PAGE>   18
 
the Guarantee, except that upon the occurrence and during the continuation of a
Declaration Event of Default, holders of Preferred Securities shall have
priority over holders of Common Securities with respect to distributions and
payments on liquidation, redemption or otherwise.
 
CERTAIN COVENANTS OF K N ENERGY
 
     The Guarantee contains certain covenants regarding among other matters,
reports to holders of the Preferred Securities and the Guarantee Trustee, and,
upon the occurrence of certain events, restrictions on the payment of dividends,
interest on debt securities and guarantee payments on other Company guarantees.
If and to the extent indicated in the applicable Prospectus Supplement, these
covenants may be removed or additional covenants added with respect to the
Guarantee.
 
AMENDMENTS AND ASSIGNMENT
 
     Except with respect to any changes that do not materially adversely affect
the rights of holders of Preferred Securities (in which case no vote will be
required) the Guarantee may be amended only with the prior approval of the
holders of at least a majority in liquidation amount of all the outstanding
Preferred Securities. The manner of obtaining any such approval of holders of
the Preferred Securities will be as set forth in the applicable Prospectus
Supplement. All guarantees and agreements contained in the Guarantee shall bind
the successors, assigns, receivers, trustees and representatives of K N Energy
and shall inure to the benefit of the holders of the Preferred Securities then
outstanding. Except in certain circumstances, K N Energy may not assign its
rights or delegate its obligations under the Guarantee without the prior
approval of the holders of at least a majority in liquidation amount of the
Preferred Securities then outstanding.
 
TERMINATION OF THE GUARANTEE
 
     The Guarantee will terminate as to each holder of Preferred Securities upon
(i) full payment of the Redemption Price and accumulated and unpaid
distributions with respect to all Preferred Securities, (ii) upon distribution
of the Trust Debentures held by the Trust to the holders of the Preferred
Securities or (iii) upon liquidation of the Trust and will terminate completely
upon full payment of the amounts payable in accordance with the Declaration.
 
EVENTS OF DEFAULT
 
     An event of default under the Guarantee will occur upon the failure of K N
Energy to perform any of its payment or other obligations thereunder.
 
     The holders of a majority in liquidation amount of Preferred Securities
relating to the Guarantee have the right to direct the time, method and place of
conducting any proceeding for any remedy available to the Guarantee Trustee in
respect of the Guarantee or to direct the exercise of any trust or power
conferred upon the Guarantee Trustee under the Preferred Securities. If the
Guarantee Trustee fails to enforce the Guarantee, any holder of Preferred
Securities relating to such Guarantee may institute a legal proceeding directly
against K N Energy to enforce the Guarantee Trustee's rights under the
Guarantee, without first instituting a legal proceeding against the Trust, the
Guarantee Trustee or any other person or entity. Notwithstanding the foregoing,
if K N Energy has failed to make a guarantee payment, a holder of Preferred
Securities may directly institute a proceeding against K N Energy for
enforcement of the Guarantee for such payment. K N Energy waives any right or
remedy to require that any action be brought first against the Trust or any
other person or entity before proceeding directly against K N Energy.
 
STATUS OF THE GUARANTEE
 
     Unless otherwise set forth in the applicable Prospectus Supplement, the
Guarantee will constitute an unsecured obligation of K N Energy and will rank
pari passu in right of payment to all other senior unsecured obligations of K N
Energy. The terms of the Preferred Securities provide that each holder of
Preferred Securities issued by the Trust by acceptance thereof agrees to the
other terms of the Guarantee relating thereto.
 
                                       14
<PAGE>   19
 
     The Guarantee will constitute a guarantee of payment and not of collection
(that is, the guaranteed party may institute a legal proceeding directly against
the guarantor to enforce its rights under the guarantee without instituting a
legal proceeding against any other person or entity).
 
INFORMATION CONCERNING THE GUARANTEE TRUSTEE
 
     The Guarantee Trustee, prior to the occurrence of a default with respect to
the Guarantee, undertakes to perform only such duties as are specifically set
forth in the Guarantee and, after default with respect to the Guarantee, shall
exercise the same degree of care as a prudent man would exercise in the conduct
of his own affairs. Subject to such provision, the Guarantee Trustee is under no
obligation to exercise any of the powers vested in it by the Guarantee at the
request of any holder of Preferred Securities unless it is offered reasonable
indemnity against the costs, expenses and liabilities that might be incurred
thereby.
 
     Wilmington Trust Company is also the trustee under the 1997 Guarantee and
the 1998 Guarantee. Pursuant to the Trust Indenture Act, should a default occur
with respect to any of the 1997 Guarantee, the 1998 Guarantee or the Guarantee,
then Wilmington Trust Company would be required to resign as trustee under one
of the guarantees within 90 days of such default, unless such default were
cured, duly waived or otherwise eliminated.
 
GOVERNING LAW
 
     The Guarantee will be governed by, and construed in accordance with, the
laws of the State of New York.
 
                  RELATIONSHIP AMONG THE PREFERRED SECURITIES,
                     THE TRUST DEBENTURES AND THE GUARANTEE
 
     As set forth in the Declaration, the sole purpose of the Trust is to issue
the Trust Securities evidencing undivided beneficial ownership interests in the
assets of the Trust, and to invest the proceeds from such issuance and sale in
the Trust Debentures.
 
     As long as payments of interest and other payments are made when due on the
Trust Debentures, such payments will be sufficient to cover distributions and
payments due on the Trust Securities because of the following factors: (i) the
aggregate principal amount of Trust Debentures will be equal to the sum of the
aggregate stated liquidation amount of the Trust Securities; (ii) the interest
rate and the interest and other payment dates on the Trust Debentures will match
the distribution rate and distribution and other payment dates for the Preferred
Securities; (iii) pursuant to the Debenture Indenture, K N Energy, as borrower,
shall pay, and the Trust shall not be obligated to pay, directly or indirectly,
all costs, expenses, debts and obligations of the Trust (other than with respect
to the Trust Securities); and (iv) the Declaration further provides that the K N
Trustees shall not take or cause or permit the Trust to, among other things,
engage in any activity that is not consistent with the purposes of the Trust.
 
     Payments of distributions (to the extent funds therefor are available) and
other payments due on the Preferred Securities (to the extent funds therefor are
available) are guaranteed by K N Energy as and to the extent set forth under
"Description of the Guarantee." If K N Energy does not make interest payments on
the Trust Debentures purchased by the Trust, it is expected that the Trust will
not have sufficient funds to pay distributions on the Preferred Securities. The
Guarantee is a full guarantee on a senior basis with respect to the Preferred
Securities issued by the Trust from the time of its issuance but does not apply
to any payment of distributions unless and until the Trust has sufficient funds
for the payment of such distributions. The Guarantee covers the payment of
distributions and other payments on the Preferred Securities only if and to the
extent that K N Energy has made a payment of interest or principal on the Trust
Debentures held by the Trust as its sole asset. The Guarantee, when taken
together with K N Energy's obligations under the Trust Debentures, the Debenture
Indenture and the Declaration, including its obligations to pay costs, expenses,
debts and liabilities of the Trust (other than with respect to the Trust
Securities), provides a full and unconditional guarantee on a senior basis of
amounts payable on the Preferred Securities.
 
                                       15
<PAGE>   20
 
     Notwithstanding anything to the contrary in the Debenture Indenture, the
Company has the right to set-off any payment it is otherwise required to make
thereunder with and to the extent the Company has theretofore made, or is
concurrently on the date of such payment making, a payment under the Guarantee.
 
     If the Guarantee Trustee fails to enforce the Guarantee, a holder of any
Preferred Security may institute a legal proceeding directly against the Company
to enforce its rights under the Guarantee without first instituting a legal
proceeding against the Guarantee Trustee, the Trust or any other person or
entity.
 
     The Trust's Preferred Securities evidence undivided beneficial ownership
interests in the assets of the Trust, and the Trust exists for the sole purpose
of issuing the Preferred Securities and Common Securities and investing the
proceeds thereof in Trust Debentures. A principal difference between the rights
of a holder of a Preferred Security and a holder of a Trust Debenture is that a
holder of a Trust Debenture will accrue, and (subject to the permissible
extension of the interest period) is entitled to receive, interest on the
principal amount of Trust Debentures held, while a holder of Preferred
Securities is only entitled to receive distributions if and to the extent the
Trust has funds available for the payment of such distributions.
 
     Upon any voluntary or involuntary dissolution of the Trust involving the
liquidation of the Trust Debentures, the holders of Preferred Securities of the
Trust will be entitled to receive, out of assets held by the Trust, the
Liquidation Distribution in cash. See "Description of the Preferred Securities."
Upon any voluntary or involuntary liquidation or bankruptcy of the Company, the
Institutional Trustee as holder of the Trust Debentures would be entitled to
receive payment in full of principal and interest, before any stockholders of
the Company receive payments or distributions.
 
                       DESCRIPTION OF THE DEBT SECURITIES
 
     The Debt Securities will constitute either senior or subordinated debt of
the Company and will be issued, in the case of Debt Securities that will be
senior debt ("Senior Debt Securities"), under an Indenture dated as of November
20, 1993 (the "Senior Debt Indenture"), between the Company and U.S. Bank Trust
National Association, as successor trustee, and, in the case of Debt Securities
that will be subordinated debt ("Subordinated Debt Securities"), under a
Subordinated Indenture dated as of May 15, 1996 (the "Subordinated Debt
Indenture"), between the Company and U.S. Bank Trust National Association, as
successor trustee. The Senior Debt Indenture and the Subordinated Debt Indenture
are sometimes hereinafter referred to individually as the "Debt Indenture" and
collectively as the "Debt Indentures." U.S. Bank Trust National Association (and
any successor thereto as trustee under the Debt Indentures) is hereinafter
referred to as the "Debt Trustee." The Debt Indentures are incorporated by
reference in the Registration Statement. The following summaries of certain
provisions of the Debt Indentures and the Debt Securities do not purport to be
complete and such summaries are subject to the detailed provisions of the
applicable Debt Indenture to which reference is hereby made for a full
description of such provisions, including the definition of certain terms used
herein. Section references in parentheses below are to sections in both Debt
Indentures unless otherwise indicated. Wherever particular sections or defined
terms of the applicable Debt Indenture are referred to, such sections or defined
terms are incorporated herein by reference as part of the statement made, and
the statement is qualified in its entirety by such reference. The Debt
Indentures are substantially identical, except for certain covenants of the
Company and provisions relating to subordination and conversion.
 
     The Debt Securities may be issued from time to time in one or more series.
The following description of the Debt Securities sets forth certain general
terms and provisions of the Debt Securities of all series. The particular terms
of each series of Debt Securities offered by any Prospectus Supplement (the
"Offered Debt Securities") will be described therein.
 
     The Company's Trust Debentures are separately described in this Prospectus
under the caption "Description of the Trust Debentures."
 
PROVISIONS APPLICABLE TO BOTH SENIOR AND SUBORDINATED DEBT SECURITIES
 
     General.  The Debt Securities will be unsecured senior or subordinated
obligations of the Company and may be issued from time to time in one or more
series. The Debt Indentures do not limit the amount of Debt
 
                                       16
<PAGE>   21
 
Securities, debentures, notes or other types of indebtedness that may be issued
by the Company or any of its subsidiaries nor do they restrict transactions
between the Company and its affiliates or the payment of dividends or other
distributions by the Company to its stockholders. The rights of the Company's
creditors, including holders of Debt Securities, will be limited to the assets
of the Company and will not be an obligation of any of its Subsidiaries. In
addition, other than as may be set forth in any Prospectus Supplement, the Debt
Indentures do not and the Debt Securities will not contain any covenants or
other provisions that are intended to afford holders of the Debt Securities
special protection in the event of either a change of control of the Company or
a highly leveraged transaction by the Company.
 
     Reference is made to the Prospectus Supplement for the following terms of
and information relating to the Offered Debt Securities (to the extent such
terms are applicable to such Offered Debt Securities): (i) the title of the
Offered Debt Securities; (ii) classification as either Senior Debt Securities or
Subordinated Debt Securities; (iii) whether the Offered Debt Securities that
constitute Subordinated Debt Securities are convertible into Common Stock and,
if so, the terms and conditions upon which such conversion will be effected
including the initial conversion price or conversion rate and any adjustments
thereto in addition to or different from those described herein, the conversion
period and other conversion provisions in addition to or in lieu of those
described herein; (iv) any limit on the aggregate principal amount of the
Offered Debt Securities; (v) whether the Offered Debt Securities are to be
issuable as Registered Securities or Bearer Securities or both, whether any of
the Offered Debt Securities are to be issuable initially in temporary global
form and whether any of the Offered Debt Securities are to be in permanent
global form; (vi) the price or prices (expressed as a percentage of the
aggregate principal amount thereof) at which the Offered Debt Securities will be
issued; (vii) the date or dates on which the Offered Debt Securities will
mature; (viii) the rate or rates per annum (or the method by which such will be
determined) at which the Offered Debt Securities will bear interest, if any, and
the date from which any such interest will accrue; (ix) the Interest Payment
Dates on which any such interest on the Offered Debt Securities will be payable,
the Regular Record Date for any interest payable on any Offered Debt Securities
which are Registered Securities on any Interest Payment Date and the extent to
which, or the manner in which, any interest payable on a temporary global
Offered Debt Security on an Interest Payment Date will be paid; (x) any
mandatory or optional sinking fund or analogous provisions; (xi) each office or
agency where, subject to the terms of the Debt Indentures as described below
under "Payment and Paying Agents", the principal of and any premium and interest
on the Offered Debt Securities will be payable and each office or agency where,
subject to the terms of the Debt Indentures as described below under "-- Form,
Exchange, Registration and Transfer", the Offered Debt Securities may be
presented for registration of transfer or exchange; (xii) the right of the
Company to redeem the Offered Debt Securities at its option and the period or
periods, if any, within which and the price or prices at which the Offered Debt
Securities may, pursuant to any optional or mandatory redemption provisions, be
redeemed, in whole or in part, and the other detailed terms and provisions of
any such optional or mandatory redemption; (xiii) the denominations in which any
Offered Debt Securities which are Registered Securities will be issuable, if
other than denominations of $1,000 and any integral multiple thereof, and the
denomination or denominations in which any Offered Debt Securities which are
Bearer Securities will be issuable, if other than the denomination of $5,000;
(xiv) the currency or currencies (including composite currencies) in which
payment of principal of and any premium and interest on the Offered Debt
Securities is payable; (xv) any index used to determine the amount of payments
of principal of and any premium and interest on the Offered Debt Securities;
(xvi) information with respect to book-entry procedures, if any; (xvii) any
applicable United States federal income tax consequences; and (xviii) any other
terms of the Offered Debt Securities not inconsistent with the provisions of the
Debt Indentures. (Section 301) Any such Prospectus Supplement will also describe
any special provisions for the payment of additional amounts with respect to the
Offered Debt Securities.
 
     Debt Securities may be issued as Original Issue Discount Securities. An
Original Issue Discount Security is a Debt Security, including any Zero-Coupon
Security, which is issued at a price lower than the amount payable upon the
Stated Maturity thereof and which provides that upon redemption or acceleration
of the maturity thereof an amount less than the amount payable upon the Stated
Maturity thereof and determined in accordance with the terms of such Debt
Security shall become due and payable. Special United States federal income tax
considerations applicable to Debt Securities issued at an original issue
discount, including Original
 
                                       17
<PAGE>   22
 
Issue Discount Securities, and special United States tax considerations and
other terms and restrictions applicable to any Debt Securities which are issued
in bearer form, offered exclusively to United States Aliens or denominated in
other than United States dollars, will be set forth in a Prospectus Supplement
relating thereto.
 
     Form, Exchange, Registration and Transfer.  Debt Securities of a series may
be issuable in definitive form solely as Registered Securities, solely as Bearer
Securities or as both Registered Securities and Bearer Securities. Unless
otherwise indicated in an applicable Prospectus Supplement, Bearer Securities
will have interest coupons attached. (Section 201) The Debt Indentures also
provide that Debt Securities of a series may be issuable in temporary or
permanent global form. (Section 201)
 
     Registered Securities of any series will be exchangeable for other
Registered Securities of the same series of any authorized denominations and of
a like aggregate principal amount and tenor. In addition, if Debt Securities of
any series are issuable as both Registered Securities and Bearer Securities, at
the option of the Holder, and subject to the terms of the applicable Debt
Indenture, Bearer Securities (with all unmatured coupons, except as provided
below, and all matured coupons in default) of such series will be exchangeable
for Registered Securities of the same series of any authorized denominations and
of a like aggregate principal amount and tenor. Bearer Securities surrendered in
exchange for Registered Securities between a Regular Record Date or a Special
Record Date and the relevant date for payment of interest shall be surrendered
without the coupon relating to such date for payment of interest, and interest
accrued as of such date will not be payable in respect of the Registered
Security issued in exchange for such Bearer Security, but will be payable only
to the Holder of such coupon when due in accordance with the terms of the
applicable Debt Indenture. Bearer Securities will not be issued in exchange for
Registered Securities. (Section 305)
 
     Debt Securities may be presented for exchange as provided above, and
Registered Securities may be presented for registration of transfer (with the
form of transfer endorsed thereon duly executed), at the office of the Security
Registrar or at the office of any transfer agent designated by the Company for
such purpose with respect to any series of Debt Securities and referred to in an
applicable Prospectus Supplement, without service charge and upon payment of any
taxes and other governmental charges as described in the Debt Indentures. Such
transfer or exchange will be effected upon the Security 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. The Debt Trustee will serve
initially as Security Registrar. (Section 305) If a Prospectus Supplement refers
to any transfer agents (in addition to the Security Registrar) initially
designated by the Company with respect to any series of Debt Securities, the
Company 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, if Debt Securities of a series are issuable solely as Registered
Securities, the Company will be required to maintain a transfer agent in each
Place of Payment for such series and, if Debt Securities of a series are also
issuable as Bearer Securities, the Company will be required to maintain (in
addition to the Security Registrar) a transfer agent in a Place of Payment for
such series located outside the United States. The Company may at any time
designate additional transfer agents with respect to any series of Debt
Securities. (Section 1002)
 
     In the event of any redemption in part, the Company shall not be required
to (i) issue, register the transfer of or exchange Debt Securities of any series
during a period beginning at the opening of business 15 days prior to the
selection of Debt Securities of that series for redemption and ending on the
close of business on (A) if Debt Securities of the series are issuable only as
Registered Securities, the day of mailing of the relevant notice of redemption
and (B) if Debt Securities of the series are issuable as Bearer Securities, the
date of the first publication of the relevant notice of redemption or, if
Securities of the series are also issuable as Registered Securities and there is
no publication, the mailing of the relevant notice of redemption; (ii) register
the transfer of or exchange any Registered Security, or portion thereof, called
for redemption, except the unredeemed portion of any Registered Security being
redeemed in part; or (iii) exchange any Bearer Security called for redemption,
except to exchange such Bearer Security for a Registered Security of that series
and like tenor which is immediately surrendered for redemption. (Section 305)
 
     Payment and Paying Agents.  Unless otherwise indicated in an applicable
Prospectus Supplement, payment of principal of and any premium and interest on
Bearer Securities will be payable, subject to any
 
                                       18
<PAGE>   23
 
applicable laws and regulations, at the offices of such Paying Agents outside
the United States as the Company may designate from time to time, in the manner
indicated in such Prospectus Supplement. (Section 1002) Unless otherwise
indicated in an applicable Prospectus Supplement, payment of interest on Bearer
Securities on any Interest Payment Date will be made only against surrender to
the Paying Agent of the coupon relating to such Interest Payment Date. (Section
1001) No payment with respect to any Bearer Security will be made at any office
or agency of the Company in the United States or by check mailed to any address
in the United States or by transfer to any account maintained with a bank
located in the United States. Notwithstanding the foregoing, payments of
principal of and any premium and interest on Bearer Securities denominated and
payable in U.S. dollars will be made at the office of the Company's Paying Agent
in the Borough of Manhattan, The City of New York, if (but only if) payment of
the full amount thereof in U.S. dollars at all offices or agencies outside the
United States is illegal or effectively precluded by exchange controls or other
similar restrictions. (Section 1002)
 
     Unless otherwise indicated in an applicable Prospectus Supplement, payment
of principal of and any premium and interest on Registered Securities will be
made at the office of such Paying Agent or Paying Agents as the Company may
designate from time to time, except that at the option of the Company payment of
any interest may be made by check mailed on or before the due date to the
address of the Person entitled thereto as such address shall appear in the
Security Register. (Sections 307, 1002) Unless otherwise indicated in an
applicable Prospectus Supplement, payment of any installment of interest on
Registered Securities will be made to the Person in whose name such Registered
Security is registered at the close of business on the Regular Record Date for
such interest. (Section 307)
 
     Unless otherwise indicated in an applicable Prospectus Supplement, the Debt
Trustee, at its corporate trust office in Chicago, Illinois, will act as Paying
Agent for payments with respect to Debt Securities which are issuable solely as
Registered Securities and the Company will maintain a Paying Agent outside the
United States for payments with respect to Debt Securities (subject to
limitations described above in the case of Bearer Securities) which are issuable
solely as Bearer Securities or as both Registered Securities and Bearer
Securities. Any Paying Agents outside the United States and any other Paying
Agents in the United States initially designated by Company for the Debt
Securities will be named in an applicable Prospectus Supplement. The Company may
at any time designate additional Paying Agents or rescind the designation of any
Paying Agent or approve a change in the office through which any Paying Agent
acts, except that, if Debt Securities of a series are issuable solely as
Registered Securities, the Company will be required to maintain a Paying Agent
in each Place of Payment for such series and, if Debt Securities of a series are
issuable as Bearer Securities, the Company will be required to maintain (i) a
Paying Agent in the Borough of Manhattan, The City of New York for principal
payments with respect to any Registered Securities of the series (and for
payments with respect to Bearer Securities of the series in the circumstances
described above, but not otherwise), and (ii) a Paying Agent in a Place of
Payment located outside the United States where Debt Securities of such series
and any coupons appertaining thereto may be presented and surrendered for
payment. (Section 1002)
 
     All monies paid by the Company to a Paying Agent for the payment of
principal of and any premium or interest on any Debt Security which remain
unclaimed at the end of two years after such principal, premium or interest
shall have become due and payable will (subject to applicable escheat laws) be
repaid to the Company, and the Holder of such Debt Security or any coupon will
thereafter look only to the Company for payment thereof. (Section 1003)
 
     Global Debt Securities.  Debt Securities of a series may be issued in whole
or in part in the form of one or more global Debt Securities that will be
deposited with, or on behalf of, a depository identified in the Prospectus
Supplement relating to such series. Global Debt Securities may be issued in
either registered or bearer form and in either temporary or permanent form.
(Section 203) Unless and until it is exchanged in whole or in part for the
individual Debt Securities represented thereby, a global Debt Security may not
be transferred except as a whole by the depository for such global Debt 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 the depository or any
nominee to a successor depository or any nominee of such successor.
 
                                       19
<PAGE>   24
 
     The specific terms of the depository arrangement with respect to a series
of Debt Securities and certain limitations and restrictions relating to a series
of Bearer Securities in the form of one or more global Debt Securities will be
described in the Prospectus Supplement relating to such series.
 
     Events of Default.  Any one of the following events constitutes an Event of
Default under each Debt Indenture with respect to Debt Securities of any series:
(a) failure to pay any interest on any Debt Security of that series when due,
continued for 30 days; (b) failure to pay principal of or any premium on any
Debt Security of that series when due; (c) failure to deposit any sinking fund
payment, when due, in respect of any Debt Security of that series; (d) failure
to perform any other covenant of the Company in such Debt Indenture (other than
a covenant included in such Debt Indenture solely for the benefit of series of
any Debt Securities other than that series), continued for 90 days after written
notice as provided in such Debt Indenture; (e) certain events in bankruptcy,
insolvency or reorganization involving the Company; and (f) any other Event of
Default provided with respect to Debt Securities of that series. (Section 501)
 
     If an Event of Default with respect to Debt Securities of any series at the
time Outstanding occurs and is continuing, either the Debt Trustee or the
Holders of at least 25% in aggregate principal amount of the Outstanding
Securities of that series by notice as provided in the applicable Debt Indenture
may declare the principal amount (or, if the Debt Securities of that series are
Original Issue Discount Securities, such portion of the principal amount as may
be specified in the terms of that series) of all the Debt Securities of that
series to be due and payable immediately. At any time after a declaration of
acceleration with respect to Debt Securities of any series has been made, but
before a judgment or decree for payment of money has been obtained by the Debt
Trustee, the Holders of a majority in aggregate principal amount of the
Outstanding Securities of that series may, under certain circumstances, rescind
and annul such acceleration. (Section 502)
 
     Each Debt Indenture provides that, subject to the duty of the Debt Trustee
during default to act with the required standard of care, the Debt Trustee is
under no obligation to exercise any of its rights or powers under such Debt
Indenture at the request or direction of any of the Holders, unless such Holders
shall have offered to the Debt Trustee reasonable indemnity. (Sections 601, 603)
Subject to such provisions for the indemnification of the Debt Trustee, the
Holders of a majority in aggregate principal amount of the Outstanding
Securities of any series have the right to direct the time, method and place of
conducting any proceeding for any remedy available to the Debt Trustee, or
exercising any trust or power conferred on the Debt Trustee, with respect to the
Debt Securities of that series; provided, however, that the Debt Trustee is not
obligated to take any action unduly prejudicial to Holders not joining in such
direction or involving the Debt Trustee in personal liability. (Section 512)
 
     The Company is required to furnish to the Debt Trustee annually a statement
as to the performance by the Company of its obligations under each Debt
Indenture and as to any default in such performance. (Section 1007)
 
     Defeasance.  If so specified with respect to any particular series of Debt
Securities issued under an Debt Indenture, the Company may discharge its
indebtedness and its obligations or certain of its obligations under such Debt
Indenture with respect to such series by depositing funds or obligations issued
or guaranteed by the United States of America with the Debt Trustee. (Sections
1301-1303)
 
     Defeasance and Discharge.  Each Debt Indenture provides that, if so
specified with respect to the Debt Securities of any series issued under such
Debt Indenture (other than convertible Subordinated Debt Securities), the
Company will be discharged from any and all obligations in respect of the Debt
Securities of such series (except for certain obligations relating to temporary
Debt Securities and exchange of Debt Securities, registration of transfer or
exchange of Debt Securities of such series, replacement of stolen, lost or
mutilated Debt Securities of such series, maintenance of paying agencies to hold
moneys for payment in trust and payment of additional amounts, if any, required
in consequence of United States withholding taxes imposed on payments to
non-United States persons) upon the deposit with the Trustee, in trust, of money
and/or U.S. Government Obligations which through the payment of interest and
principal in respect thereof in accordance with their terms will provide money
in an amount sufficient to pay the principal of (and premium, if any), and each
installment of interest on, the Debt Securities of such series on the Stated
Maturity of such payments in accordance with the terms of such Debt Indenture
and the Debt Securities of such series.
 
                                       20
<PAGE>   25
 
(Sections 1302, 1304) Such a trust may only be established if, among other
things, the Company has delivered to the Debt Trustee an Opinion of Counsel to
the effect that (i) the Company has received from, or there has been published
by, the Internal Revenue Service a ruling, or (ii) since the date of such Debt
Indenture there has been a change in applicable federal income tax law, in
either case to the effect that, and based thereon such Opinion of Counsel shall
confirm that, the Holders of such series will not recognize income, gain or loss
for United States federal income tax purposes as a result of such deposit,
defeasance and discharge, and will be subject to United States federal income
tax on the same amounts and in the same manner and at the same times as would
have been the case if such deposit, defeasance and discharge had not occurred.
(Section 1304) In the event of any such defeasance and discharge of Debt
Securities of such series, Holders of such series would be entitled to look only
to such trust fund for payment of principal of and any premium and any interest
on their Debt Securities until Maturity.
 
     Covenant Defeasance.  Each Debt Indenture also provides that, if so
specified with respect to the Debt Securities of any series issued thereunder,
the Company may omit to comply with certain restrictive covenants, including (in
the case of the Senior Debt Indenture) the covenant described under "Limitation
on Liens" below, but excluding (in the case of the Subordinated Debt Indenture)
any applicable obligation of the Company respecting the conversion of Debt
Securities of such series into Common Stock, and any such omission shall not be
an Event of Default with respect to the Debt Securities of such series, upon the
deposit with the Debt Trustee, in trust, of money and/or U.S. Government
Obligations which through the payment of interest and principal in respect
thereof in accordance with their terms will provide money in an amount
sufficient to pay the principal of (and premium, if any), and each installment
of interest on, the Debt Securities of such series on the Stated Maturity of
such payments in accordance with the terms of such Debt Indenture and the Debt
Securities of such series. The obligations of the Company under such Debt
Indenture and the Debt Securities of such series other than with respect to such
covenants shall remain in full force and effect. (Section 1303) Such a trust may
be established only if, among other things, the Company has delivered to the
Debt Trustee an Opinion of Counsel to the effect that the Holders of such series
will not recognize income, gain or loss for United States federal income tax
purposes as a result of such deposit and defeasance of certain obligations and
will be subject to United States 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. (Section 1304)
 
     Although the amount of money and U.S. Government Obligations on deposit
with the Debt Trustee would be intended to be sufficient to pay amounts due on
the Debt Securities of such series at the time of their Stated Maturity, in the
event the Company exercises its option to omit compliance with the covenants
defeased with respect to the Debt Securities of any series as described above,
and the Debt Securities of such series are declared due and payable because of
the occurrence of any Event of Default, such amount may not be sufficient to pay
amounts due on the Debt Securities of such series at the time of the
acceleration resulting from such Event of Default. The Company shall in any
event remain liable for such payments as provided in the applicable Debt
Indenture.
 
     Federal Income Tax Consequences Relating to Defeasance.  Under current
United States federal income tax law, defeasance and discharge would likely be
treated as a taxable exchange of Debt Securities to be defeased for an interest
in the defeasance trust. As a consequence, a holder would recognize gain or loss
equal to the difference between the holder's cost or other tax basis for such
Debt Securities and the value of the holder's interest in the defeasance trust,
and thereafter would be required to include in income the holder's share of the
income, gain or loss of the defeasance trust. Under current United States
federal income tax law, covenant defeasance would ordinarily not be treated as a
taxable exchange of such Debt Securities.
 
     Meetings, Modification and Waiver.  Modifications and amendments of either
Debt Indenture may be made by the Company and the Debt Trustee with the consent
of the Holders of a majority in aggregate principal amount of the Outstanding
Securities of each series affected by such modification or amendment; provided,
however, that no such modification or amendment may, without consent of the
Holder of each Outstanding Security affected thereby, (a) change the Stated
Maturity of the principal of, or any installment of principal of or interest on,
any Debt Security, (b) change the Redemption Date with respect to any Debt
Security, (c) reduce the principal amount of, or premium or interest on, any
Debt Security, (d) change any
 
                                       21
<PAGE>   26
 
obligation of the Company to pay additional amounts, (e) reduce the amount of
principal of an Original Issue Discount Security payable upon acceleration of
the Maturity thereof, (f) change the coin or currency in which any Debt Security
or any premium or interest thereon is payable, (g) change the redemption right
of any Holder, (h) impair the right to institute suit for the enforcement of any
payment on or with respect to any Debt Security or any conversion right with
respect thereto, (i) reduce the percentage in principal amount of Outstanding
Securities of any series, the consent of whose Holders is required for
modification or amendment of such Debt Indenture or for waiver of compliance
with certain provisions of such Debt Indenture or for waiver of certain
defaults, (j) reduce the requirements contained in such Debt Indenture for
quorum or voting, (k) change any obligation of the Company to maintain an office
or agency in the places and for the purposes required by such Debt Indenture,
(l) adversely affect the right to convert Subordinated Debt Securities, if
applicable, or (m) modify any of the above provisions. (Section 902)
 
     The Subordinated Debt Indenture may not be amended to alter the
subordination of any outstanding Subordinated Debt Securities without the
consent of each holder of Senior Indebtedness (as defined below under
"-- Provisions Applicable Solely to Subordinated Debt Securities") then
outstanding that would be adversely affected thereby. (Section 907 of the
Subordinated Debt Indenture)
 
     The Holders of a majority in aggregate principal amount of the Outstanding
Securities of each series may, on behalf of all Holders of that series, waive,
insofar as that series is concerned, compliance by the Company with certain
restrictive provisions of the Debt Indenture under which such series has been
issued. (Section 1008) The Holders of a majority in aggregate principal amount
of the Outstanding Securities of each series may, on behalf of all Holders of
that series, waive any past default under the applicable Debt Indenture with
respect to any Debt Securities of that series, except a default (a) in the
payment of principal of, or premium, if any, or any interest on any Debt
Security of such series or (b) in respect of a covenant or provision of such
Debt Indenture which cannot be modified or amended without the consent of the
Holder of each Outstanding Security of such series affected. (Section 513)
 
     Each Debt Indenture provides that in determining whether the Holders of the
requisite principal amount of the Outstanding Securities have given any request,
demand, authorization, direction, notice, consent or waiver thereunder or are
present at a meeting of the Holders for quorum purposes, (i) the principal
amount of an Original Issue Discount Security that is deemed to be Outstanding
will be the amount of the principal that would be due and payable as of the date
of such determination upon acceleration of the Maturity thereof, and (ii) the
principal amount of a Debt Security denominated in a foreign currency or
currency units will be the U.S. dollar equivalent, determined on the date of
original issuance of such Debt Security, of the principal amount of such Debt
Security or, in the case of an Original Issue Discount Security, the U.S. dollar
equivalent, determined on the date of original issuance of such Security, of the
amount determined as provided in (i) above. (Section 101)
 
     Each Debt Indenture contains provisions for convening meetings of the
Holders of a series if Debt Securities of that series are issuable as Bearer
Securities. (Section 1401) A meeting may be called at any time by the Trustee,
and also, upon request, by the Company or the Holders of at least 10% in
aggregate principal amount of the Outstanding Securities of such series, in any
such case upon notice given in accordance with "-- Notices" below. (Section
1402) Except for any consent which must be given by the Holder of each
Outstanding Security affected thereby, as described above, any resolution
presented at a meeting (or adjourned meeting at which a quorum is present) may
be adopted by the affirmative vote of the Holders of a majority in aggregate
principal amount of the Outstanding Securities of that series; provided,
however, that any resolution with respect to any request, demand, authorization,
direction, notice, consent, waiver or other action which may be made, given or
taken by the Holders of a specified percentage, which is less than a majority,
in aggregate principal amount of the Outstanding Securities of a series may be
adopted at a meeting (or adjourned meeting duly reconvened at which a quorum is
present) by the affirmative vote of the Holders of such specified percentage in
aggregate principal amount of the Outstanding Securities of that series. Any
resolution passed or decision taken at any meeting of Holders of any series duly
held in accordance with the applicable Debt Indenture will be binding on all
Holders of that series and related coupons. The quorum at any meeting, and at
any reconvened meeting, will be Persons holding or representing a majority in
aggregate principal amount of the Outstanding Securities of a series. (Section
1404)
 
                                       22
<PAGE>   27
 
     Consolidation, Merger and Sale of Assets.  The Company, without the consent
of the Holders of any of the outstanding Debt Securities under either Debt
Indenture, may consolidate with or merge into, or convey, transfer or lease its
assets substantially as an entirety to, any Person which is a corporation,
partnership or trust organized and validly existing under the laws of any
domestic jurisdiction, provided that any successor Person assumes the Company's
obligations on the Securities and under such Debt Indenture, that after giving
effect to the transaction no Event of Default, and no event which, after notice
or lapse of time, would become an Event of Default, shall have occurred and be
continuing, and that certain other conditions are met. (Section 801)
 
     Notices.  Except as otherwise provided in the Debt Indentures, notices to
Holders of Bearer Securities will be given by publication at least twice in a
daily newspaper in The City of New York and in such other city or cities as may
be specified in such Bearer Securities. Notices to Holders of Registered
Securities will be given by mail to the addresses of such Holders as they appear
in the Security Register. (Section 106)
 
     Title.  Title to any Bearer Securities (including Bearer Securities in
permanent global form) and any coupons appertaining thereto will pass by
delivery. The Company, the Debt Trustee and any agent of the Company or the
Trustee may treat the bearer of any Bearer Security and the bearer of any coupon
and the registered owner of any Registered Security as the owner thereof
(whether or not such Debt Security or coupon shall be overdue and
notwithstanding any notice to the contrary) for the purpose of making payment
and for all other purposes. (Section 308)
 
     Replacement of Securities and Coupons.  Any mutilated Debt Security or a
Debt Security with a mutilated coupon appertaining thereto will be replaced by
the Company at the expense of the Holder upon surrender of such Debt Security to
the Debt Trustee. Debt Securities or coupons that became destroyed, stolen or
lost will be replaced by the Company at the expense of the Holder upon delivery
to the Debt Trustee of the Debt Security and coupons or evidence of destruction,
loss or theft thereof satisfactory to the Company and the Debt Trustee; in the
case of any coupon which becomes destroyed, stolen or lost, such coupon will be
replaced by issuance of a new Debt Security in exchange for the Debt Security to
which such coupon appertains. In the case of a destroyed, lost or stolen Debt
Security or coupon, an indemnity satisfactory to the Debt Trustee and the
Company may be required at the expense of the Holder of such Debt Security or
coupon before a replacement Debt Security will be issued. (Section 306)
 
     Governing Law.  The Debt Indentures, the Debt Securities and coupons will
be governed by, and construed in accordance with, the laws of the State of New
York. (Section 113)
 
     Regarding the Trustee.  U.S. Bank Trust National Association, the Debt
Trustee under each Debt Indenture, is also trustee under another indenture under
which several issues of the Company's debt securities are outstanding.
 
     Each Debt Indenture contains certain limitations on the right of the Debt
Trustee, should it become a creditor of the Company, to obtain payment of claims
in certain cases, or to realize for its own account on certain property received
in respect of any such claim as security or otherwise. (Section 613) The Debt
Trustee is permitted to engage in certain other transactions; however, if it
acquires any conflicting interest (as described in the Debt Indentures), it must
eliminate such conflict or resign. (Section 608)
 
     Pursuant to the Trust Indenture Act, should a default occur with respect to
either the Senior Debt Securities or the Subordinated Debt Securities, U.S. Bank
Trust National Association would be required to resign as Debt Trustee under one
of the Debt Indentures within 90 days of such default unless such default were
cured, duly waived or otherwise eliminated.
 
PROVISIONS APPLICABLE SOLELY TO SENIOR DEBT SECURITIES
 
     General.  Senior Debt Securities will be issued under the Senior Debt
Indenture, and each series will rank pari passu as to the right of payment of
principal and any premium and interest with each other series issued thereunder
and will rank senior to all series of Subordinated Debt Securities that may be
issued.
 
                                       23
<PAGE>   28
 
     Certain Definitions.  For purposes of the following discussion, the
following definitions are applicable (Section 101 of the Senior Debt Indenture):
 
     "Net Tangible Assets" means the total amount of assets appearing on a
consolidated balance sheet of the Company and its Subsidiaries less, without
duplication: (a) all current liabilities (excluding any thereof which are
extendible or renewable by their terms or replaceable or refundable pursuant to
enforceable commitments at the option of the obligor thereon without requiring
the consent of the obligee to a time more than 12 months after the time as of
which the amount thereof is being computed and excluding current maturities of
long-term debt and preferred stock); (b) all reserves for depreciation and other
asset valuation reserves but excluding reserves for deferred federal income
taxes arising from accelerated depreciation or otherwise; (c) all goodwill,
trademarks, trade names, patents and unamortized debt discount and expense and
other like intangible assets carried as an asset and (d) all appropriate
adjustments on account of minority interests of other Persons holding common
stock in any Subsidiary.
 
     "Person" means any individual, corporation, partnership, joint venture,
trust, unincorporated organization or government or any agency or political
subdivision thereof.
 
     "Principal Property" means any natural gas pipeline, natural gas
distribution system, natural gas gathering system or natural gas storage
facility located in the United States, except any such property that in the
opinion of the Board of Directors is not of material importance to the business
conducted by the Company and its consolidated Subsidiaries taken as a whole.
 
     "Principal Subsidiary" means any Subsidiary which owns a Principal
Property.
 
     "Subsidiary" means a corporation more than 50% of the outstanding stock of
which is owned, directly or indirectly, by the Company or by one or more
Subsidiaries, or by the Company and one or more other Subsidiaries. For the
purposes of this definition, "voting stock" means stock which ordinarily has
voting power for the election of directors, whether at all times or only so long
as no senior class of stock has such voting power by reason of any contingency.
 
     Limitation on Liens.  The Company covenants in the Senior Debt Indenture
that it will not, nor will it permit any Subsidiary to, issue, assume or
guarantee any debt for money borrowed ("Debt") if such Debt is secured by a
mortgage, pledge, security interest or lien (a "mortgage" or "mortgages") upon
any Principal Property of the Company or any Principal Subsidiary or upon any
shares of stock or indebtedness of any Principal Subsidiary (whether such
Principal Property, shares or indebtedness was owned on the date of the Senior
Debt Indenture or thereafter acquired) without in any such case effectively
providing that the Senior Debt Securities shall be secured equally and ratably
with (or prior to) such Debt, except that the foregoing restrictions shall not
apply to: (a) mortgages on any property acquired, constructed or improved by the
Company or any Principal Subsidiary after the date of the Senior Debt Indenture
which are created within 180 days after such acquisition (or in the case of
property constructed or improved, after the completion and commencement of
commercial operation of such property, whichever is later) to secure or provide
for the payment of the purchase price or cost thereof, provided that in the case
of such construction or improvement the mortgages shall not apply to any
property theretofore owned by the Company or any Subsidiary other than
theretofore unimproved real property; (b) existing mortgages on property
acquired (including mortgages on any property acquired from a Person which is
consolidated with or merged with or into the Company or a Subsidiary) or
mortgages outstanding at the time any corporation becomes a Subsidiary; (c)
mortgages in favor of domestic or foreign governmental bodies to secure advances
or other payments pursuant to any contract or statute or to secure indebtedness
incurred to finance the purchase price or cost of constructing or improving the
property subject to such mortgages, including mortgages to secure Debt of the
pollution control or industrial revenue bond type; (d) mortgages in favor of the
Company or any Principal Subsidiary; or (e) any extension, renewal or
replacement (or successive extensions, renewals or replacements), in whole or in
part, of any mortgage referred to in any of the foregoing clauses (a)-(d).
(Section 1006 of the Senior Debt Indenture)
 
     Notwithstanding the foregoing, the Company and any Subsidiary may, without
securing the Senior Debt Securities, issue, assume or guarantee secured Debt
(which would otherwise be subject to the foregoing
 
                                       24
<PAGE>   29
 
restrictions) in an aggregate amount which, together with all other such Debt,
does not exceed 10% of the Net Tangible Assets, as shown on a consolidated
balance sheet as of a date not more than 90 days prior to the proposed
transaction prepared by the Company in accordance with generally accepted
accounting principles. (Section 1006 of the Senior Debt Indenture)
 
PROVISIONS APPLICABLE SOLELY TO SUBORDINATED DEBT SECURITIES
 
     Subordination.  The Subordinated Debt Securities will be subordinate and
junior in right of payment, to the extent set forth in the Subordinated Debt
Indenture, to all Senior Indebtedness (as defined below) of the Company. If the
Company should default in the payment of any principal of or premium or interest
on any Senior Indebtedness when the same becomes due and payable, whether at
Stated Maturity or a date fixed for prepayment or by declaration of acceleration
or otherwise, then, upon written notice of such default to the Company by the
holders of such Senior Indebtedness or any trustee therefor and subject to
certain rights of the Company to dispute such default and subject to proper
notification of the Trustee, unless and until such default has been cured or
waived or ceases to exist, no direct or indirect payment (in cash, property,
securities, by set-off or otherwise) will be made or agreed to be made for
principal of, premium, if any, or interest, if any, on the Subordinated Debt
Securities, or in respect of any redemption, retirement, purchase or other
acquisition of the Subordinated Debt Securities other than those made in capital
stock of the Company (or cash in lieu of fractional shares thereof) pursuant to
any conversion right of the Subordinated Debt Securities or otherwise made in
capital stock of the Company. (Sections 1601, 1604 and 1605 of the Subordinated
Debt Indenture)
 
     "Senior Indebtedness" is defined in Section 101 of the Subordinated Debt
Indenture as Indebtedness (as defined below) of the Company outstanding at any
time except (a) any Indebtedness as to which, by the terms of the instrument
creating or evidencing the same, it is provided that such Indebtedness is not
senior in right of payment to the Subordinated Debt Securities, (b) the
Subordinated Debt Securities, (c) any Indebtedness of the Company to a
wholly-owned Subsidiary of the Company, (d) interest accruing after the filing
of a petition initiating certain bankruptcy or insolvency proceedings unless
such interest is an allowed claim enforceable against the Company in a
proceeding under federal or state bankruptcy laws and (e) trade accounts
payable. "Indebtedness" is defined in Section 101 of the Subordinated Debt
Indenture as, with respect to any Person, (a) (i) the principal of and premium
and interest, if any, on indebtedness for money borrowed of such Person
evidenced by bonds, notes, debentures or similar obligations, including any
guaranty by such Person of any indebtedness for money borrowed of any other
Person, whether any such indebtedness or guaranty is outstanding on the date of
the Subordinated Debt Indenture or is thereafter created, assumed or incurred,
(ii) the principal of and premium and interest, if any, on indebtedness for
money borrowed, incurred, assumed or guaranteed by such Person in connection
with the acquisition by it or any of its subsidiaries of any other business,
properties or other assets and (iii) lease obligations which such Person
capitalizes in accordance with Statement of Financial Accounting Standards No.
13 promulgated by the Financial Accounting Standards Board or such other
generally accepted accounting principles as may be from time to time in effect,
(b) any other indebtedness of such Person, including any indebtedness
representing the balance deferred and unpaid of the purchase price of any
property or interest therein, including any such balance that constitutes a
trade account payable, and any guaranty, endorsement or other contingent
obligation of such Person in respect of any indebtedness of another, which is
outstanding on the date of the Subordinated Debt Indenture or is thereafter
created, assumed or incurred by such Person and (c) any amendments,
modifications, refundings, renewals or extensions of any indebtedness or
obligation described as Indebtedness in clause (a) or (b) above.
 
     If (i) without the consent of the Company a court shall enter (A) an order
for relief with respect to the Company under the United States federal
bankruptcy laws, (B) a judgment, order or decree adjudging the Company a
bankrupt or insolvent, or (C) an order for relief for reorganization,
arrangement, adjustment or composition of or in respect of the Company under the
United States federal bankruptcy laws or state insolvency laws or (ii) the
Company shall institute proceedings for the entry of an order for relief with
respect to the Company under the United States federal bankruptcy laws or for an
adjudication of insolvency, or shall consent to the institution of bankruptcy or
insolvency proceedings against it, or shall file a petition seeking, or
 
                                       25
<PAGE>   30
 
seek or consent to reorganization, arrangement, composition or similar relief
under any applicable law, or shall consent to the filing of such petition or to
the appointment of a receiver, custodian, liquidator, assignee, trustee,
sequestrator or similar official in respect of the Company or of substantially
all of its property, or the Company shall make a general assignment for the
benefit of creditors, then all Senior Indebtedness (including any interest
thereon accruing after the commencement of any such proceedings) will first be
paid in full before any payment or distribution, whether in cash, securities or
other property, is made on account of the principal of, premium, if any, or
interest, if any, on the Subordinated Debt Securities. In such event, any
payment or distribution on account of the principal of, premium, if any, or
interest, if any, on the Subordinated Debt Securities, whether in cash,
securities or other property (other than securities of the Company or any other
corporation provided for by a plan of reorganization or readjustment the payment
of which is subordinate, at least to the extent provided in the subordination
provisions with respect to the Subordinated Debt Securities, to the payment of
all Senior Indebtedness then outstanding and to any securities issued in respect
thereof under any such plan of reorganization or readjustment), which would
otherwise (but for the subordination provisions) be payable or deliverable in
respect of the Subordinated Debt Securities will be paid or delivered directly
to the holders of Senior Indebtedness in accordance with the priorities then
existing among such holders until all Senior Indebtedness (including any
interest thereon accruing after the commencement of any such proceedings) has
been paid in full. If any payment or distribution on account of the principal
of, premium, if any, or interest, if any, on the Subordinated Debt Securities of
any character, whether in cash, securities or other property (other than
securities of the Company or any other corporation provided for by a plan of
reorganization or readjustment the payment of which is subordinate, at least to
the extent provided in the subordination provisions with respect to the
Subordinated Debt Securities, to the payment of all Senior Indebtedness then
outstanding and to any securities issued in respect thereof under any such plan
of reorganization or readjustment), shall be received by the Debt Trustee or any
Holder of any Subordinated Debt Securities in contravention of any of the terms
of the Subordinated Debt Indenture, such payment or distribution will be
received in trust for the benefit of, and will be paid over or delivered and
transferred to, the holders of the Senior Indebtedness then outstanding in
accordance with the priorities then existing among such holders for application
to the payment of all Senior Indebtedness remaining unpaid, to the extent
necessary to pay all such Senior Indebtedness in full. In the event of any such
proceeding, after payment in full of all sums owing with respect to Senior
Indebtedness, the Holders of Subordinated Debt Securities, together with the
holders of any other obligations of the Company ranking on a parity with the
Subordinated Debt Securities, will be entitled to be repaid from the remaining
assets of the Company the amounts at that time due and owing on account of
unpaid principal of or any premium or interest on the Subordinated Debt
Securities and such other obligations before any payment or other distribution,
whether in cash, property or otherwise, shall be made on account of any capital
stock or obligations of the Company ranking junior to the Subordinated Debt
Securities and such other obligations. (Section 1601 of the Subordinated Debt
Indenture)
 
     The Prospectus Supplement respecting any series of Subordinated Debt
Securities will set forth any subordination provisions applicable to such series
in addition to or different from those described above.
 
     By reason of such subordination, in the event of the insolvency of the
Company, Holders of Senior Indebtedness and holders of other obligations of the
Company that are not subordinated to Senior Indebtedness may receive more,
ratably, than Holders of the Subordinated Debt Securities. Such subordination
will not prevent the occurrence of an Event of Default or limit the right of
acceleration in respect of the Subordinated Debt Securities.
 
     Conversion.  The Subordinated Debt Indenture may provide for a right of
conversion of Subordinated Debt Securities into Common Stock (or cash in lieu
thereof). (Sections 301 and 1501 of the Subordinated Debt Indenture) The
following provisions will apply to Debt Securities that are convertible
Subordinated Debt Securities unless otherwise provided in the Prospectus
Supplement for such Debt Securities.
 
     The Holder of any convertible Subordinated Debt Securities will have the
right exercisable at any time set forth in the Prospectus Supplement, unless
previously redeemed or otherwise purchased by the Company, to convert such
Subordinated Debt Securities into shares of Common Stock at the conversion price
or conversion rate set forth in the Prospectus Supplement, subject to
adjustment. (Section 1502 of the Subordinated Debt Indenture) The holder of
convertible Subordinated Debt Securities may convert any
 
                                       26
<PAGE>   31
 
portion thereof which is $1,000 in principal amount or any integral multiple
thereof. (Section 1502 of the Subordinated Debt Indenture)
 
     In certain events, the conversion price or conversion rate will be subject
to adjustment as set forth in the Subordinated Debt Indenture. Such events
include the issuance of shares of Common Stock of the Company as a dividend or
distribution on the Common Stock; subdivisions, combinations and
reclassifications of the Common Stock; the issuance to all holders of Common
Stock of rights or warrants entitling the holders thereof (for a period not
exceeding 45 days) to subscribe for or purchase shares of Common Stock at a
price per share less than the then current market price per share of Common
Stock (as determined pursuant to the Subordinated Debt Indenture); and the
distribution to substantially all holders of Common Stock of evidences of
indebtedness, equity securities (including equity interests in the Company's
Subsidiaries) other than Common Stock, or other assets (excluding cash dividends
paid from surplus) or subscription rights or warrants (other than those referred
to above). No adjustment of the conversion price or conversion rate will be
required unless an adjustment would require a cumulative increase or decrease of
at least 1% in such price or rate. (Section 1504 of the Subordinated Debt
Indenture) Certain adjustments in the conversion price or conversion rate in
accordance with the foregoing provisions may result in constructive
distributions to either holders of the Subordinated Debt Securities or holders
of Common Stock which would be taxable pursuant to Treasury Regulations issued
under section 305 of the Internal Revenue Code of 1986, as amended. The amount
of any such taxable constructive distribution would be the fair market value of
the Common Stock which is treated as having been constructively received, such
value being determined as of the time the adjustment resulting in the
constructive distribution is made.
 
     Fractional shares of Common Stock will not be issued upon conversion, but,
in lieu thereof, the Company will pay a cash adjustment based on the then
current market price for the Common Stock. (Section 1503 of the Subordinated
Debt Indenture) Upon conversion, no adjustments will be made for accrued
interest or dividends, and therefore convertible Subordinated Debt Securities
surrendered for conversion between the record date for an interest payment and
the Interest Payment Date (except convertible Subordinated Debt Securities
called for redemption on a redemption date during such period) must be
accompanied by payment of an amount equal to the interest thereon which the
registered holder is to receive. (Sections 1504 and 1502 of the Subordinated
Debt Indenture)
 
     In the case of any consolidation or merger of the Company (with certain
exceptions) or any conveyance, transfer or lease of the properties and assets of
the Company substantially as an entirety to any Person, each Holder of
convertible Subordinated Debt Securities, after the consolidation, merger,
conveyance, transfer or lease, will have the right to convert such convertible
Subordinated Debt Securities only into the kind and amount of securities, cash
and other property which the Holder would have been entitled to receive upon or
in connection with such consolidation, merger, conveyance, transfer or lease, if
the Holder had held the Common Stock issuable upon conversion of such
convertible Subordinated Debt Securities immediately prior to such
consolidation, merger, conveyance, transfer or lease. (Section 1505 of the
Subordinated Debt Indenture)
 
                                       27
<PAGE>   32
 
                          DESCRIPTION OF CAPITAL STOCK
 
GENERAL
 
   
     K N is currently authorized by its Restated Articles of Incorporation, as
amended (the "K N Charter") to issue 150,000,000 shares of Common Stock, of
which 44,990,698 were outstanding on July 31, 1998; 200,000 shares of Class A
Preferred Stock, no par value ("Class A Preferred Stock"), of which 70,000
shares were outstanding as Class A $5.00 Cumulative Preferred Stock on such
date; and 2,000,000 shares of Class B Preferred Stock, no par value ("Class B
Preferred Stock"), none of which were outstanding on such date.
    
 
     The Board of Directors of K N is authorized by the K N Charter to provide,
without further stockholder action, for the issuance of one or more series of
Class A Preferred Stock and Class B Preferred Stock. The Board of Directors has
the power to fix various terms with respect to each such series, including
voting power, designations, preferences, dividend rates, conversion and exchange
provisions, redemption provisions and, in the case of the Class B Preferred
Stock, the amounts which holders are entitled to receive upon any liquidation,
dissolution or winding up of K N. Class A Preferred Stock and Class B Preferred
Stock will rank prior to the Common Stock with respect to both dividends and
distribution of assets on liquidation, dissolution or winding up of K N.
 
     In the event of any liquidation, dissolution or winding up of K N, whether
voluntary or involuntary, the holders of shares of Class A Preferred Stock of
each series shall be entitled to receive in full out of the assets of K N the
sum of $100 per share of Class A Preferred Stock, plus any arrearages in
dividends thereon to the date fixed for the payment in liquidation, before any
distribution shall be made to the holders of shares of any stock junior to the
Class A Preferred Stock. K N may, at the option of the Board of Directors,
redeem the whole or any part of the Class A Preferred Stock, or of any series
thereof at any time or from time to time within the period during which such
stock is, according to the K N Charter, or the resolutions of the Board of
Directors providing for the issue thereof, redeemable, by paying the redemption
price thereof, including any arrearages in dividends thereon to the date fixed
for redemption. The Class A $5.00 Cumulative Preferred Stock is redeemable, in
whole or in part, at the option of K N at any time, or from time to time, at the
price of $105 per share plus accrued and unpaid dividends. This series has no
sinking fund requirements. Holders of shares of Class A $5.00 Cumulative
Preferred Stock are entitled to receive, when and as declared by the Board of
Directors of K N, cumulative preferential cash dividends at the annual rate of
$5.00 per share prior to the payment of any dividends or other distributions on
(or purchase or redemption of) the Class B Preferred Stock or the Common Stock.
 
     In the event of any liquidation, dissolution or winding up of K N, whether
voluntary or involuntary, the holders of shares of Class B Preferred Stock of
each series shall be entitled to receive, subject to the prior rights of the
holders of shares of Class A Preferred Stock, the full preferential amount fixed
by the K N Charter, or by the resolutions of the Board of Directors providing
for the issue thereof, including any arrearages in dividends thereon to the date
fixed for the payment in liquidation, before any distribution shall be made to
the holders of shares of any stock junior to the Class B Preferred Stock.
Dividends may not be declared or paid or set apart for payment on any series of
Class B Preferred Stock, unless there shall be no arrearages in dividends on any
series of Class A Preferred Stock entitled to cumulative dividends for any past
dividend period and dividends in full for the current dividend period have been
paid or declared or set aside for payment on all Class A Preferred Stock.
 
     In addition, the holders of the Class A Preferred Stock then outstanding
have the right to vote separately as a class with respect to (i) certain
amendments to the K N Charter or the By-Laws of K N which adversely affect the
voting powers, rights or preferences of the holders of shares of Class A
Preferred Stock, (ii) the creation of any class of stock or any security
convertible into or exchangeable for or evidencing the right to purchase any
stock ranking prior to or on a parity with, either as to dividends or upon
liquidation, the Class A Preferred Stock, or (iii) certain mergers or
consolidations of K N with or into any other corporation. For such actions to be
taken by K N, including increasing the authorized amount of any class of stock
ranking prior to the Class A Preferred Stock, the affirmative vote of the
holders of at least 50% of the shares of the Class A Preferred Stock then
outstanding would be required. The affirmative vote of at least 50% of the
shares of any series of Class A Preferred Stock then outstanding is required for
K N to amend the K N Charter or
 
                                       28
<PAGE>   33
 
resolutions of the Board of Directors of K N providing for the issue of such
series of Class A Preferred Stock so as to affect adversely the powers,
preferences or rights of holders of Class A Preferred Stock of such series. The
holders of Class B Preferred Stock then outstanding also have the right to a
separate vote regarding (a) the events described in the first sentence of this
paragraph with regard to such Class B Preferred Stock, requiring the affirmative
vote of at least 50% of the shares of Class B Preferred Stock then outstanding,
and (b) amendments to the K N Charter, or to resolutions of K N's Board of
Directors providing for the issue of any series of Class B Preferred Stock so as
to affect adversely the powers, preferences or rights of the holders of such
series, requiring the affirmative vote of at least 50% of the shares of such
series then outstanding.
 
     If dividends are in arrears on the shares of any series of Class A
Preferred Stock to which the following provisions are made applicable pursuant
to the K N Charter or resolutions of K N's Board of Directors providing for the
issue of any such series (i) in an aggregate amount equal to three but less than
six full quarterly dividends, then the holders of the shares of all such series
of Class A Preferred Stock have the exclusive right, voting separately as a
class and without regard to series, to elect directors constituting one-third of
K N's Board of Directors or (ii) in an aggregate amount equal to six full
quarterly dividends, then such holders have the exclusive right, voting
separately as a class and without regard to series, to elect directors
constituting one-half of K N's Board of Directors plus one additional director,
in each case until all arrearages in dividends and dividends in full for the
current quarterly period have been paid on or declared and set aside for payment
on the shares of such series. These provisions are applicable to the Class A
$5.00 Cumulative Preferred Stock. The holders of any outstanding Class B
Preferred Stock would have the right to elect directors of K N similar to the
Class A $5.00 Cumulative Preferred Stock in the event of nondeclaration of
dividends, for the periods described above, on the Class B Preferred Stock if
the holders of the Class A $5.00 Cumulative Preferred Stock are not then
entitled to elect directors as described above.
 
     All outstanding shares of Common Stock are, and any shares of Common Stock
newly issued under any Prospectus Supplement will be, validly issued, fully paid
and nonassessable. Holders of K N Common Stock and Class A $5.00 Cumulative
Preferred Stock are entitled to one vote for each share on all matters voted on
by stockholders. Holders of Common Stock, Class A Preferred Stock and Class B
Preferred Stock have no preemptive rights to subscribe for or purchase any
additional securities issued by K N. Subject to the preferential rights of the
holders of the Class A Preferred Stock and Class B Preferred Stock, the holders
of Common Stock are entitled to receive any dividends which may be declared by
the Board of Directors out of funds legally available therefor and to share pro
rata in the net assets of K N upon liquidation, dissolution or winding up.
Shares of Common Stock have no cumulative voting rights or redemption, sinking
fund or conversion privileges.
 
ANTI-TAKEOVER MATTERS
 
   
     Charter and Bylaws.  Certain provisions of the K N Charter and the By-Laws
of K N could have the effect of preventing a change in control of K N in certain
situations. These provisions generally provide for (a) the classification of the
Board of Directors of K N into three classes of as nearly an equal number as
possible, having staggered terms of three years each; (b) the removal of
directors only for cause or by unanimous vote of the remaining members of the
Board of Directors; (c) the filling of any vacancy on the Board of Directors by
the remaining directors then in office; (d) the limitation of the number of
directors to a minimum of nine and a maximum of 15, with the exact number to be
determined by the Board of Directors; (e) increasing the stockholder vote
required to amend, repeal or adopt any provision inconsistent with the foregoing
provisions under (a), (b) and (d) above to two-thirds of the outstanding voting
securities of K N; (f) the requirement that certain business combinations or
transactions involving K N and any beneficial owner of more than 5% of the
outstanding voting securities of K N be approved by holders of at least
two-thirds of the outstanding voting securities of K N, including those held by
such beneficial owner, unless the business combination or transaction is (I)
approved by the Board of Directors before such beneficial owner became a holder
of more than 5% of K N's outstanding voting securities or (II) approved by
sufficient members of the Board of Directors to constitute a majority of the
members of the full Board of Directors in office prior to the time such
beneficial owner became a holder of more than 5% of K N's voting securities, or
(III) with an entity of which a majority of the outstanding shares of voting
securities is owned by K N and its subsidiaries;
    
 
                                       29
<PAGE>   34
 
(g) increasing the stockholder vote required to amend, repeal or adopt any
provision inconsistent with the foregoing provision under (f) above to
two-thirds or more of the then outstanding shares of voting securities of K N;
(h) the requirement that certain business combinations or transactions involving
K N and any beneficial owner of 10% or more of the outstanding voting securities
of K N be approved by holders of at least 80% of the outstanding voting
securities of K N, including those held by such beneficial owner, unless (I) the
business combination or transaction is approved by three-fourths of the Board of
Directors then in office who are not associated with or related to anyone who
beneficially owns, and do not themselves own, 10% or more of K N's voting
securities or (II) certain conditions relating generally to the fairness of the
price to be received by stockholders of K N in such business combination or
transaction are satisfied; (i) increasing the stockholder vote required to
amend, repeal or adopt any provision inconsistent with the foregoing provision
under (h) above to 80% or more of the outstanding voting securities of K N
unless approved by an affirmative vote of three-fourths of the Board of
Directors then in office who are not associated with or related to anyone who
beneficially owns, and do not themselves own, 10% or more of K N's voting
securities; (j) certain procedural requirements for stockholder nominations to
the Board of Directors; and (k) the requirement that special meetings of
stockholders may only be called by stockholders owning 51% or more of the
outstanding voting securities of K N, by a majority of the Board of Directors,
the Chairman of the Board of Directors or the President of K N.
 
     Shareholder Rights Plan.  On August 17, 1995, the Board of Directors of K N
declared a dividend of one preferred share purchase right (a "Right") with
respect to each outstanding share of Common Stock held of record on September
15, 1995 or issued thereafter and prior to the date the Rights become
exercisable. Until the Rights become exercisable, they will be evidenced by
certificates for shares of Common Stock and will automatically trade with the
Common Stock. If and when the Rights become exercisable, Rights certificates
will be distributed and the Rights will become separately tradable. The full
terms of the Rights are set forth in the Rights Agreement, dated as of August
21, 1995 (the "Rights Agreement"), between the Company and The Bank of New York,
as Rights Agent. A copy of the Rights Agreement is filed as an exhibit to the
Registration Statement.
 
     Each Right entitles the holder thereof to purchase from the Company one
one-thousandth of a share of Class B Junior Participating Series Preferred
Stock, without par value (the "Preferred Shares"), for a price of $80 per one
onethousandth of a Preferred Share (the "Purchase Price"), subject to
adjustment. The Rights become exercisable upon the earlier of (i) ten business
days following a public announcement that a person or group of affiliated or
associated persons has acquired beneficial ownership of 20% or more of the
outstanding voting shares of the Company or (ii) ten business days following the
commencement or announcement of an intention to commence a tender or exchange
offer the consummation of which would result in the beneficial ownership by a
person or group of 20% or more of the outstanding voting shares of the Company.
The Rights will expire on the later of September 15, 2005 or the third
anniversary of the date on which the Rights became exercisable (the "Final
Expiration Date"), unless the Final Expiration Date is extended or the Rights
are earlier redeemed or exchanged by the Company as described below.
 
     If a person or group were to acquire 20% or more of the voting shares of
the Company, each Right then outstanding (other than Rights beneficially owned
by the acquiring person, which would become null and void) would become a right
to buy that number of shares of Common Stock (or, under certain circumstances,
the equivalent number of one onethousandths of a Preferred Share) that at the
time of such acquisition would have a market value of two times the Purchase
Price of the Right. If the Company were acquired in a merger or other business
combination transaction or more than 50% of its consolidated assets or earning
power were sold, proper provision will be made so that holder of a Right will
thereafter have the right to receive, upon the exercise thereof at the then
current Purchase Price of the Right, that number of shares of common stock of
the acquiring company which at the time of such transaction would have a market
value of two times the Purchase Price of the Right.
 
     At any time after the acquisition by a person or group of beneficial
ownership of 20% or more of the outstanding voting shares of the Company and
before the acquisition by a person or group of 50% or more of the outstanding
voting shares of the Company, the Board of Directors may, at its option, issue
shares of Common Stock (or Preferred Shares) in mandatory redemption of, and in
exchange for, all or part of the then
 
                                       30
<PAGE>   35
 
outstanding and exercisable Rights (other than Rights owned by such person or
group, which would become null and void) at an exchange ratio of one share of
Common Stock (or one one-thousandth of a Preferred Share) for each Right,
subject to adjustment. In addition, the Company is entitled to redeem all of the
outstanding Rights at a price of $0.01 per Right at any time prior to the first
public announcement that a person or group has become the beneficial owner of
20% or more of the outstanding voting shares of the Company.
 
     Until a Right is exercised, the holder thereof, as such, has no rights as a
stockholder of the Company, including, without limitation, the right to vote or
to receive dividends.
 
KANSAS BUSINESS COMBINATION ACT
 
     K N is subject to Sections 17-12,100 et seq. of the Kansas Statutes
Annotated (the "K.S.A."), which imposes a three-year moratorium on business
combinations between a Kansas corporation and an "interested stockholder" (in
general, a stockholder owning 15% or more of a corporation's outstanding voting
stock) or an affiliate or associate thereof unless (a) prior to an interested
stockholder becoming such, the board of directors of the corporation has
approved either the business combination or the transaction by which the
interested stockholder became such; (b) upon consummation of the transaction
resulting in an interested stockholder becoming such, the interested stockholder
owns 85% of the voting stock that was outstanding at the time the transaction
commenced (excluding, from the calculation of outstanding shares, shares
beneficially owned by management, directors and certain employees stock plans);
or (c) on or after the date an interested stockholder becomes such, the business
combination is approved by (i) the Board of Directors and (ii) the affirmative
vote of the holders of at least 66 2/3% of the outstanding shares (other than
those shares beneficially owned by the interested stockholder) at a meeting of
stockholders.
 
KANSAS CONTROL SHARE ACQUISITIONS ACT
 
     K N is also subject to Sections 17-1286 et seq. of the K.S.A. (the "Kansas
Control Share Acquisitions Act"), which applies to public corporations
incorporated in Kansas that have certain other connections with the state. The
Kansas Control Share Acquisitions Act relates principally to the acquisition of
"control shares" in such a corporation. Under the Kansas Control Share
Acquisitions Act, a control share acquisition is one that, except for the
operation of the Act, would raise the acquiring person's voting power in the
election of directors of the subject corporation to or above any of three
thresholds: one-fifth or more but less than one-third of all voting power;
one-third or more but less than a majority of all voting power; and at least a
majority of all voting power. Whenever a control share acquisition occurs, the
acquiring person has no voting rights with respect to those shares unless both a
majority of all outstanding shares and a majority of all such shares excluding
all "interested shares" (in general, shares beneficially controlled by the
acquiring person or any officer or inside director of the subject corporation)
approve the acquisition. If the control shares are accorded voting rights, then
dissenters' rights are available under the Kansas Control Share Acquisitions Act
to stockholders who did not vote in favor of the control share acquisition and
who comply with certain prescribed procedures. If the stockholders vote not to
accord voting rights to the control shares, however, then the issuing
corporation has a 60-day option to redeem all such shares at market value.
 
OTHER MATTERS
 
   
     First Chicago Trust Company of New York serves as registrar and transfer
agent for the Common Stock and for the Class A $5.00 Cumulative Preferred Stock.
    
 
        DESCRIPTION OF STOCK PURCHASE CONTRACTS AND STOCK PURCHASE UNITS
 
     The Company may issue Stock Purchase Contracts, including contracts
obligating holders to purchase from the Company, and the Company to sell to the
holders, a specified number of shares of Common Stock at a future date or dates.
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 Stock Purchase Units
                                       31
<PAGE>   36
 
consisting of a Stock Purchase Contract and Debt Securities, 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. The Stock Purchase Contracts may require the
Company 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 arrangements and
depositary arrangements, relating to such Stock Purchase Contracts or Stock
Purchase Units. Certain 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.
 
                              BOOK-ENTRY ISSUANCE
 
     Unless otherwise specified in the applicable Prospectus Supplement, The
Depositary Trust Company ("DTC") will act as depositary for Securities issued in
the form of Global Securities. Such Securities will be issued only as
fully-registered securities registered in the name of Cede & Co. (DTC's
nominee). One or more fully-registered Global Securities will be issued for such
Securities representing in the aggregate the total number of such Securities,
and will be deposited with or on behalf of DTC.
 
     DTC 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. DTC
holds securities that its Participants deposit with DTC. DTC also facilitates
the settlement among Participants of securities transactions, such as transfers
and pledges, in 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 ("Direct Participants"). DTC is owned by a number of its
Direct Participants and by the New York Stock Exchange, Inc., the American Stock
Exchange, Inc. and the National Association of Securities Dealers, Inc. Access
to the DTC system is also available to others such as securities brokers and
dealers, banks and trust companies that clear through or maintain custodial
relationships with Direct Participants, either directly or indirectly ("Indirect
Participants"). The rules applicable to DTC and its Participants are on file
with the Commission.
 
     Purchases of Securities within the DTC system must be made by or through
Direct Participants, which will receive a credit for such Securities on DTC's
records. The ownership interest of each actual purchaser of each Security
("Beneficial Owner") is in turn to be recorded on the Direct and Indirect
Participants' records. Beneficial Owners will not receive written confirmation
from DTC of their purchases, but Beneficial Owners are expected to receive
written confirmations providing details of the transactions, as well as periodic
statements of their holdings, from the Direct or Indirect Participants through
which the Beneficial Owners purchased Securities. Transfers of ownership
interests in Securities issued in the form of Global Securities are to be
accomplished by entries made on the books of Participants acting on behalf of
Beneficial Owners. Beneficial Owners will not receive certificates representing
their ownership interests in such Securities, except in the event that use of
the book-entry system for such Securities is discontinued.
 
     DTC has no knowledge of the actual Beneficial Owners of the Securities
issued in the form of Global Securities; DTC's records reflect only the identity
of the Direct Participants to whose accounts such Securities are credited, which
may or may not be the Beneficial Owners. The Participants will remain
responsible for keeping account of their holdings on behalf of their customers.
 
     Conveyance of notices and other communications by DTC to Direct
Participants, by Direct Participants to Indirect Participants, and by Direct
Participants and Indirect Participants to Beneficial Owners will be
 
                                       32
<PAGE>   37
 
governed by arrangements among them, subject to any statutory or regulatory
requirements as may be in effect from time to time.
 
     Redemption notices shall be sent to Cede & Co. as the registered holder of
Securities issued in the form of Global Securities. If less than all of a series
of such Securities are being redeemed, DTC's current practice is to determine by
lot the amount of the interest of each Direct Participant to be redeemed.
 
     Although voting with respect to Securities issued in the form of Global
Securities is limited to the holders of record of such Securities, in those
instances in which a vote is required, neither DTC nor Cede & Co. will itself
consent or vote with respect to such Securities. Under its usual procedures, DTC
would mail an omnibus proxy (the "Omnibus Proxy") to the issuer of such
Securities as soon as possible after the record date. The Omnibus Proxy assigns
Cede & Co.'s consenting or voting rights to those Direct Participants to whose
accounts such Securities are credited on the record date (identified in a
listing attached to the Omnibus Proxy).
 
     Payments in respect of Securities issued in the form of Global Securities
will be made by the issuer of such Securities to DTC. DTC's practice is to
credit Direct Participants' accounts on the relevant payment date in accordance
with their respective holdings shown on DTC's records unless DTC has reason to
believe that it will not receive payments on such payment date. Payments by
Participants to Beneficial Owners will be governed by standing instructions and
customary practices and will be the responsibility of such Participant and not
of DTC, the Institutional Trustee, either Trust or the Company, subject to any
statutory or regulatory requirements as may be in effect from time to time.
Payments to DTC are the responsibility of the issuer of the applicable
Securities, disbursement of such payments to Direct Participants is the
responsibility of DTC, and disbursements of such payments to the Beneficial
Owners is the responsibility of Direct and Indirect Participants.
 
     DTC may discontinue providing its services as depositary with respect to
any Securities at any time by giving reasonable notice to the issuer of such
Securities. In the event that a successor depositary is not obtained, individual
Security certificates representing such Securities are required to be printed
and delivered. The Company, at its option, may decide to discontinue use of the
system of book-entry transfers through DTC (or a successor depositary).
 
     The information in this section concerning DTC and DTC's book-entry system
has been obtained from sources that the Trust and the Company believe to be
accurate, but the Trust and the Company assume no responsibility for the
accuracy thereof. Neither the Trust nor the Company has any responsibility for
the performance by DTC or its Participants of their respective obligations as
described herein or under the rules and procedures governing their respective
operations.
 
                              PLAN OF DISTRIBUTION
 
     Any of the Securities being offered hereby may be sold in any one or more
of the following ways from time to time: (i) through agents; (ii) to or through
underwriters; (iii) through dealers; and (iv) directly by the Company or, in the
case of Preferred Securities, by the Trust to purchasers.
 
     The distribution of the Securities may be effected from time to time in one
or more transactions at a fixed price or prices, which may be changed, at market
prices prevailing at the time of sale, at prices related to such prevailing
market prices or at negotiated prices.
 
     Offers to purchase Securities may be solicited by agents designated by the
Company from time to time. Any such agent involved in the offer or sale of the
Securities in respect of which this Prospectus is delivered will be named, and
any commissions payable by the Company or the Trust to such agent will be set
forth, in the applicable Prospectus Supplement. Unless otherwise indicated in
such Prospectus Supplement, any such agent will be acting on a reasonable best
efforts basis for the period of its appointment. Any such agent may be deemed to
be an underwriter, as that term is defined in the Securities Act, of the
Securities so offered and sold.
 
                                       33
<PAGE>   38
 
     If Securities are sold by means of an underwritten offering, the Company
and, in the case of an offering of Preferred Securities, the Trust will execute
an underwriting agreement with an underwriter or underwriters at the time an
agreement for such sale is reached, and the names of the specific managing
underwriter or underwriters, as well as any other underwriters, the respective
amounts underwritten and the terms of the transaction, including commissions,
discounts and any other compensation of the underwriters and dealers, if any,
will be set forth in the applicable Prospectus Supplement which will be used by
the underwriters to make resales of the Securities in respect of which this
Prospectus is being delivered to the public. If underwriters are utilized in the
sale of any Securities in respect of which this Prospectus is being delivered,
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 fixed public offering prices or at varying prices
determined by the underwriters at the time of sale. Securities may be offered to
the public either through underwriting syndicates represented by managing
underwriters or directly by one or more underwriters. If any underwriter or
underwriters are utilized in the sale of Securities, unless otherwise indicated
in the applicable Prospectus Supplement, the underwriting agreement will provide
that the obligations of the underwriters are subject to certain conditions
precedent and that the underwriters with respect to a sale of such Securities
will be obligated to purchase all such Securities if any are purchased.
 
     The Company or the Trust, as applicable, may grant to the underwriters
options to purchase additional Securities, to cover over-allotments, if any, at
the initial public offering price (with additional underwriting commissions or
discounts), as may be set forth in the Prospectus Supplement relating thereto.
If the Company or the Trust, as applicable, grants any over-allotment option,
the terms of such over-allotment option will be set forth in the Prospectus
Supplement for such Securities.
 
     If a dealer is utilized in the sale of the Securities in respect of which
this Prospectus is delivered, the Company or the Trust, as applicable, will sell
such Securities to the dealer as principal. The dealer may then resell such
Securities to the public at varying prices to be determined by such dealer at
the time of resale. Any such dealer may be deemed to be an underwriter, as such
term is defined in the Securities Act, of the Securities so offered and sold.
The name of the dealer and the terms of the transaction will be set forth in the
Prospectus Supplement relating thereto.
 
     Offers to purchase Securities may be solicited directly by the Company or
the Trust, as applicable, and the sale thereof may be made by the Company or the
Trust directly to institutional investors or others, who may be deemed to be
underwriters within the meaning of the Securities Act with respect to any resale
thereof. The terms of any such sales will be described in the Prospectus
Supplement relating thereto.
 
     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 ("remarketing firms"), acting as principals for their own
accounts or as agents for the Company or the Trust, as applicable. Any
remarketing firm will be identified and the terms of its agreement, if any, with
the Company or the 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, in connection with
the Securities remarketed thereby.
 
     If so indicated in the applicable Prospectus Supplement, the Company or the
Trust, as applicable, may authorize agents and underwriters to solicit offers by
certain institutions to purchase Securities from the Company or the Trust at the
public offering price set forth in the applicable Prospectus Supplement pursuant
to delayed delivery contracts providing for payment and delivery on the date or
dates stated in the applicable Prospectus Supplement. Such delayed delivery
contracts will be subject to only those conditions set forth in the applicable
Prospectus Supplement. A commission indicated in the applicable Prospectus
supplement will be paid to underwriters and agents soliciting purchases of
Securities pursuant to delayed delivery contracts accepted by the Company or the
Trust, as applicable.
 
     Agents, underwriters, dealers and remarketing firms may be entitled under
relevant agreements with the Company or the Trust, as applicable, to
indemnification by the Company or the Trust against certain liabilities,
including liabilities under the Securities Act, or to contribution with respect
to payments which such agents, underwriters, dealers and remarketing firms may
be required to make in respect thereof.
 
                                       34
<PAGE>   39
 
     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. The Company 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, the Company
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, the Company and its
subsidiaries in the ordinary course of business.
 
                                 LEGAL MATTERS
 
   
     The validity of the Preferred Securities will be passed upon on behalf of K
N Energy and the Trust by Richards, Layton & Finger P.A., special Delaware
counsel to K N Energy and the Trust. The validity of the Trust Debentures, the
Guarantee, the Debt Securities and Stock Purchase Contracts and certain matters
relating thereto will be passed upon for K N Energy and the Trust by Simpson
Thacher & Bartlett, New York, New York. The validity of the Common Stock and the
Stock Purchase Units will be passed upon by Martha B. Wyrsch, General Counsel of
the Company. As of August 31, 1998, Ms. Wyrsch owned 3,253 shares of Common
Stock, 4,200 shares of restricted Common Stock and held options to purchase an
additional 90,549 shares of Common Stock. The validity of the Offered Securities
will be passed upon for any agents, dealers or underwriters by counsel named in
the applicable Prospectus Supplement.
    
 
                                    EXPERTS
 
     The consolidated financial statements of K N Energy, Inc. and subsidiaries
as of December 31, 1997 and 1996, and for each of the three years in the period
ended December 31, 1997, incorporated in this Prospectus and elsewhere in the
Registration Statement by reference to its Annual Report on Form 10-K for the
year ended December 31, 1997, have been audited by Arthur Andersen LLP,
independent public accountants, as indicated in their report with respect
thereto, and are incorporated by reference herein in reliance upon the authority
of said firm as experts in accounting and auditing in giving said report.
 
     The consolidated financial statements of MidCon Corp. and subsidiaries as
of December 31, 1997 and 1996, and for each of the three years in the period
ended December 31, 1997, incorporated in this Prospectus and elsewhere in the
Registration Statement by reference to the Current Report on Form 8-K/A filed
with the Commission on February 12, 1998, have been audited by Arthur Andersen
LLP, independent public accountants, as indicated in their report with respect
thereto, and are incorporated by reference herein in reliance upon the authority
of said firm as experts in accounting and auditing in giving said report.
 
                                       35
<PAGE>   40
 
INFORMATION CONTAINED HEREIN IS SUBJECT TO COMPLETION OR AMENDMENT. A
REGISTRATION STATEMENT RELATING TO THESE SECURITIES HAS BEEN FILED WITH THE
SECURITIES AND EXCHANGE COMMISSION. THESE SECURITIES MAY NOT BE SOLD NOR MAY
OFFERS TO BUY BE ACCEPTED PRIOR TO THE TIME THE REGISTRATION STATEMENT BECOMES
EFFECTIVE. THIS PROSPECTUS SHALL NOT CONSTITUTE AN OFFER TO SELL OR THE
SOLICITATION OF AN OFFER TO BUY NOR SHALL THERE BE ANY SALE OF THESE SECURITIES
IN ANY STATE IN WHICH SUCH OFFER, SOLICITATION OR SALE WOULD BE UNLAWFUL PRIOR
TO REGISTRATION OR QUALIFICATION UNDER THE SECURITIES LAWS OF ANY STATE OR
JURISDICTION.
 
   
PROSPECTUS (Subject to completion)
    
 
   
Issued October 7, 1998
    
 
   
                                              Shares
    
 
   
                                K N Energy, Inc.
    
   
                                  COMMON STOCK
    
                            ------------------------
 
   
     This Prospectus relates to an aggregate of           shares of common
stock, par value $5.00 per share (the "Common Stock"), of K N Energy, Inc. ("K
N" or the "Company") held by Thermo LLC (the "Selling Stockholder"). See
information under the heading "Selling Stockholder." The Common Stock will be
offered in amounts, at prices and on terms to be determined in light of market
conditions at the time of sale and set forth in a supplement to this Prospectus
(a "Prospectus Supplement").
    
 
                            ------------------------
 
   
     The Common Stock may be sold directly by the Selling Stockholder to
investors, through agents designated from time to time or to or through
underwriters or dealers. See "Plan of Distribution." If any agents of the
Selling Stockholder or any underwriters are involved in the sale of any Common
Stock in respect of which this Prospectus is being delivered, the names of such
agents or underwriters and any applicable commissions or discounts will be set
forth in a Prospectus Supplement. The Company will not receive any of the
proceeds from the sale of any Common Stock by the Selling Stockholder (including
the shares of Common Stock to be sold pursuant to a Prospectus Supplement). See
"Use of Proceeds."
    
 
                            ------------------------
 
   
     The Common Stock is traded on the New York Stock Exchange (the "NYSE")
under the symbol "KNE."
    
 
                            ------------------------
 
   
  THESE SECURITIES HAVE NOT BEEN APPROVED OR DISAPPROVED BY THE SECURITIES AND
 EXCHANGE COMMISSION OR ANY STATE SECURITIES COMMISSION, NOR HAS THE SECURITIES
   AND EXCHANGE COMMISSION OR ANY STATE SECURITIES COMMISSION PASSED UPON THE
ACCURACY OR ADEQUACY OF THIS PROSPECTUS. ANY REPRESENTATION TO THE CONTRARY IS A
                               CRIMINAL OFFENSE.
    
 
                            ------------------------
 
   
     THIS PROSPECTUS MAY NOT BE USED TO CONSUMMATE SALES OF THE COMMON STOCK
UNLESS ACCOMPANIED BY A PROSPECTUS SUPPLEMENT.
    
 
                            ------------------------
 
   
            , 1998
    
<PAGE>   41
 
   
                             AVAILABLE INFORMATION
    
 
   
     The Company is subject to the information requirements of the Securities
Exchange Act of 1934, as amended (the "Exchange Act"), and in accordance
therewith files reports, proxy statements and other information with the
Securities and Exchange Commission (the "Commission"). Such reports, proxy
statements, and other information filed by the Company with the Commission can
be inspected and copied at the public reference facilities maintained by the
Commission at Room 1024, Judiciary Plaza, 450 Fifth Street, N.W., Washington,
D.C. 20549 and at the following Regional Offices of the Commission: Chicago
Regional Office, Citicorp Center, 500 West Madison Street, Suite 1400, Chicago,
Illinois 60661; and New York Regional Office, Seven World Trade Center, 13th
Floor, New York, New York 10048. Copies of such material can be obtained from
the Public Reference Section of the Commission, Washington, D.C. 20549 at
prescribed rates. The Commission maintains a Website that contains reports,
proxy and information statements and other materials that are filed through the
Commission's Electronic Data Gathering Analysis and Retrieval System. The
Website can be accessed at http://www.sec.gov. In addition, reports, proxy
statements and other information concerning the Company can be inspected at the
NYSE, 20 Broad Street, New York, New York 10005, on which exchange the Common
Stock is listed.
    
 
   
     This Prospectus constitutes a part of a Registration Statement on Form S-3
(together with all amendments and exhibits thereto, the "Registration
Statement") filed by the Company and the Trust with the Commission under the
Securities Act of 1933, as amended (the "Securities Act"). This Prospectus omits
certain of the information contained in the Registration Statement, and
reference is hereby made to the Registration Statement for further information
with respect to the Company and the securities offered hereby. Any statements
contained herein concerning the provisions of any document filed as an exhibit
to the Registration Statement or otherwise filed with the Commission are not
necessarily complete, and in each instance reference is made to the copy of such
document so filed. Each such statement is qualified in its entirety by such
reference.
    
 
   
                INCORPORATION OF CERTAIN DOCUMENTS BY REFERENCE
    
 
   
     The following documents filed by the Company with the Commission (File No.
1-6446) pursuant to the Exchange Act are incorporated by reference and made a
part hereof:
    
 
   
          (a) the Company's Annual Report on Form 10-K for the year ended
     December 31, 1997;
    
 
   
          (b) the Company's Quarterly Reports on Form 10-Q for the quarters
     ended March 31, 1998 and June 30, 1998;
    
 
   
          (c) the Company's Current Reports on Form 8-K dated January 5, 1998,
     January 16, 1998, as amended by the Current Report on Form 8-K/A dated
     February 12, 1998, March 6, 1998, April 24, 1998, June 5, 1998 and October
     7, 1998; and
    
 
   
          (d) the description of the Preferred Share Purchase Rights and the
     Common Stock contained in the Company's Registration Statements on Form
     8-A.
    
 
   
     All documents subsequently filed by the Company pursuant to Section 13(a),
13(c), 14 or 15(d) of the Exchange Act, after the date of this Prospectus and
prior to the termination of the offering of the Securities pursuant hereto,
shall be deemed to be incorporated by reference herein and to be a part hereof
from the date of filing of such document. Any statement contained herein or in a
document incorporated or deemed to be incorporated by reference herein shall be
deemed to be modified or superseded for purposes of this Prospectus to the
extent that a statement contained herein or in any other subsequently filed
document which also is or is deemed to be incorporated by reference herein
modifies or supersedes such statement. Any such statement so modified or
superseded shall not be deemed, except as so modified or superseded, to
constitute a part of this Prospectus.
    
 
   
     The Company will provide without charge to any person, including any
beneficial owner of Securities, to whom this Prospectus is delivered, upon
written or oral request of such person, a copy of any and all of the documents
referred to above which have been incorporated by reference in this Prospectus
(other than
    
 
                                        2
<PAGE>   42
 
   
exhibits to such documents, unless such exhibits are specifically incorporated
by reference into such documents). Such requests should be directed to the
office of the Vice President and Treasurer, K N Energy, Inc., 370 Van Gordon
Street, P.O. Box 281304, Lakewood, Colorado 80228-8304, telephone number (303)
989-1740.
    
 
   
                                K N ENERGY, INC.
    
 
   
     K N Energy is an integrated energy services provider whose operations
include the gathering, processing, transportation and storage of natural gas and
the marketing of natural gas and natural gas liquids. The Company also markets
innovative products and services, such as the Simple Choice(sm) menu of products
and call center services designed for residential consumers, utilities, and
small businesses through its 50% owned en-able(sm), LLC affiliate.
    
 
   
     K N was incorporated under the laws of the State of Kansas in 1927. The
address of its principal executive offices is 370 Van Gordon Street, P. O. Box
281304, Lakewood, Colorado 80228-8304 and its telephone number is (303)
989-1740.
    
 
   
     Additional information concerning the Company and its subsidiaries is
included in the Company reports and other documents incorporated by reference in
this Prospectus. See "Available Information" and "Incorporation of Certain
Documents by Reference."
    
 
   
                                USE OF PROCEEDS
    
 
   
     The Company will not receive any proceeds from the sale of any Common Stock
by the Selling Stockholder.
    
 
                                        3
<PAGE>   43
 
   
                          DESCRIPTION OF CAPITAL STOCK
    
 
   
GENERAL
    
 
   
     K N is currently authorized by its Restated Articles of Incorporation, as
amended (the "K N Charter") to issue 150,000,000 shares of Common Stock, of
which 44,990,698 were outstanding on July 31, 1998; 200,000 shares of Class A
Preferred Stock, no par value ("Class A Preferred Stock"), of which 70,000
shares were outstanding as Class A $5.00 Cumulative Preferred Stock on such
date; and 2,000,000 shares of Class B Preferred Stock, no par value ("Class B
Preferred Stock"), none of which were outstanding on such date.
    
 
   
     The Board of Directors of K N is authorized by the K N Charter to provide,
without further stockholder action, for the issuance of one or more series of
Class A Preferred Stock and Class B Preferred Stock. The Board of Directors has
the power to fix various terms with respect to each such series, including
voting power, designations, preferences, dividend rates, conversion and exchange
provisions, redemption provisions and, in the case of the Class B Preferred
Stock, the amounts which holders are entitled to receive upon any liquidation,
dissolution or winding up of K N. Class A Preferred Stock and Class B Preferred
Stock will rank prior to the Common Stock with respect to both dividends and
distribution of assets on liquidation, dissolution or winding up of K N.
    
 
   
     In the event of any liquidation, dissolution or winding up of K N, whether
voluntary or involuntary, the holders of shares of Class A Preferred Stock of
each series shall be entitled to receive in full out of the assets of K N the
sum of $100 per share of Class A Preferred Stock, plus any arrearages in
dividends thereon to the date fixed for the payment in liquidation, before any
distribution shall be made to the holders of shares of any stock junior to the
Class A Preferred Stock. K N may, at the option of the Board of Directors,
redeem the whole or any part of the Class A Preferred Stock, or of any series
thereof at any time or from time to time within the period during which such
stock is, according to the K N Charter, or the resolutions of the Board of
Directors providing for the issue thereof, redeemable, by paying the redemption
price thereof, including any arrearages in dividends thereon to the date fixed
for redemption. The Class A $5.00 Cumulative Preferred Stock is redeemable, in
whole or in part, at the option of K N at any time, or from time to time, at the
price of $105 per share plus accrued and unpaid dividends. This series has no
sinking fund requirements. Holders of shares of Class A $5.00 Cumulative
Preferred Stock are entitled to receive, when and as declared by the Board of
Directors of K N, cumulative preferential cash dividends at the annual rate of
$5.00 per share prior to the payment of any dividends or other distributions on
(or purchase or redemption of) the Class B Preferred Stock or the Common Stock.
    
 
   
     In the event of any liquidation, dissolution or winding up of K N, whether
voluntary or involuntary, the holders of shares of Class B Preferred Stock of
each series shall be entitled to receive, subject to the prior rights of the
holders of shares of Class A Preferred Stock, the full preferential amount fixed
by the K N Charter, or by the resolutions of the Board of Directors providing
for the issue thereof, including any arrearages in dividends thereon to the date
fixed for the payment in liquidation, before any distribution shall be made to
the holders of shares of any stock junior to the Class B Preferred Stock.
Dividends may not be declared or paid or set apart for payment on any series of
Class B Preferred Stock, unless there shall be no arrearages in dividends on any
series of Class A Preferred Stock entitled to cumulative dividends for any past
dividend period and dividends in full for the current dividend period have been
paid or declared or set aside for payment on all Class A Preferred Stock.
    
 
   
     In addition, the holders of the Class A Preferred Stock then outstanding
have the right to vote separately as a class with respect to (i) certain
amendments to the K N Charter or the By-Laws of K N which adversely affect the
voting powers, rights or preferences of the holders of shares of Class A
Preferred Stock, (ii) the creation of any class of stock or any security
convertible into or exchangeable for or evidencing the right to purchase any
stock ranking prior to or on a parity with, either as to dividends or upon
liquidation, the Class A Preferred Stock, or (iii) certain mergers or
consolidations of K N with or into any other corporation. For such actions to be
taken by K N, including increasing the authorized amount of any class of stock
ranking prior to the Class A Preferred Stock, the affirmative vote of the
holders of at least 50% of the shares of the Class A Preferred Stock then
outstanding would be required. The affirmative vote of at least 50% of the
shares of any series of Class A Preferred Stock then outstanding is required for
K N to amend the K N Charter or
    
 
                                        4
<PAGE>   44
 
   
resolutions of the Board of Directors of K N providing for the issue of such
series of Class A Preferred Stock so as to affect adversely the powers,
preferences or rights of holders of Class A Preferred Stock of such series. The
holders of Class B Preferred Stock then outstanding also have the right to a
separate vote regarding (a) the events described in the first sentence of this
paragraph with regard to such Class B Preferred Stock, requiring the affirmative
vote of at least 50% of the shares of Class B Preferred Stock then outstanding,
and (b) amendments to the K N Charter, or to resolutions of K N's Board of
Directors providing for the issue of any series of Class B Preferred Stock so as
to affect adversely the powers, preferences or rights of the holders of such
series, requiring the affirmative vote of at least 50% of the shares of such
series then outstanding.
    
 
   
     If dividends are in arrears on the shares of any series of Class A
Preferred Stock to which the following provisions are made applicable pursuant
to the K N Charter or resolutions of K N's Board of Directors providing for the
issue of any such series (i) in an aggregate amount equal to three but less than
six full quarterly dividends, then the holders of the shares of all such series
of Class A Preferred Stock have the exclusive right, voting separately as a
class and without regard to series, to elect directors constituting one-third of
K N's Board of Directors or (ii) in an aggregate amount equal to six full
quarterly dividends, then such holders have the exclusive right, voting
separately as a class and without regard to series, to elect directors
constituting one-half of K N's Board of Directors plus one additional director,
in each case until all arrearages in dividends and dividends in full for the
current quarterly period have been paid on or declared and set aside for payment
on the shares of such series. These provisions are applicable to the Class A
$5.00 Cumulative Preferred Stock. The holders of any outstanding Class B
Preferred Stock would have the right to elect directors of K N similar to the
Class A $5.00 Cumulative Preferred Stock in the event of nondeclaration of
dividends, for the periods described above, on the Class B Preferred Stock if
the holders of the Class A $5.00 Cumulative Preferred Stock are not then
entitled to elect directors as described above.
    
 
   
     All outstanding shares of Common Stock are, and any shares of Common Stock
newly issued under any Prospectus Supplement will be, validly issued, fully paid
and nonassessable. Holders of K N Common Stock and Class A $5.00 Cumulative
Preferred Stock are entitled to one vote for each share on all matters voted on
by stockholders. Holders of Common Stock, Class A Preferred Stock and Class B
Preferred Stock have no preemptive rights to subscribe for or purchase any
additional securities issued by K N. Subject to the preferential rights of the
holders of the Class A Preferred Stock and Class B Preferred Stock, the holders
of Common Stock are entitled to receive any dividends which may be declared by
the Board of Directors out of funds legally available therefor and to share pro
rata in the net assets of K N upon liquidation, dissolution or winding up.
Shares of Common Stock have no cumulative voting rights or redemption, sinking
fund or conversion privileges.
    
 
   
ANTI-TAKEOVER MATTERS
    
 
   
     Charter and Bylaws.  Certain provisions of the K N Charter and the By-Laws
of K N could have the effect of preventing a change in control of K N in certain
situations. These provisions generally provide for (a) the classification of the
Board of Directors of K N into three classes of as nearly an equal number as
possible, having staggered terms of three years each; (b) the removal of
directors only for cause or by unanimous vote of the remaining members of the
Board of Directors; (c) the filling of any vacancy on the Board of Directors by
the remaining directors then in office; (d) the limitation of the number of
directors to a minimum of nine and a maximum of 15, with the exact number to be
determined by the Board of Directors; (e) increasing the stockholder vote
required to amend, repeal or adopt any provision inconsistent with the foregoing
provisions under (a), (b) and (d) above to two-thirds of the outstanding voting
securities of K N; (f) the requirement that certain business combinations or
transactions involving K N and any beneficial owner of more than 5% of the
outstanding voting securities of K N be approved by holders of at least
two-thirds of the outstanding voting securities of K N, including those held by
such beneficial owner, unless the business combination or transaction is (I)
approved by the Board of Directors before such beneficial owner became a holder
of more than 5% of K N's outstanding voting securities or (II) approved by
sufficient members of the Board of Directors to constitute a majority of the
members of the full Board of Directors in office prior to the time such
beneficial owner became a holder of more than 5% of K N's voting securities, or
(III) with an entity of which a majority of the outstanding shares of voting
securities is owned by K N and its subsidiaries;
    
 
                                        5
<PAGE>   45
 
   
(g) increasing the stockholder vote required to amend, repeal or adopt any
provision inconsistent with the foregoing provision under (f) above to
two-thirds or more of the then outstanding shares of voting securities of K N;
(h) the requirement that certain business combinations or transactions involving
K N and any beneficial owner of 10% or more of the outstanding voting securities
of K N be approved by holders of at least 80% of the outstanding voting
securities of K N, including those held by such beneficial owner, unless (I) the
business combination or transaction is approved by three-fourths of the Board of
Directors then in office who are not associated with or related to anyone who
beneficially owns, and do not themselves own, 10% or more of K N's voting
securities or (II) certain conditions relating generally to the fairness of the
price to be received by stockholders of K N in such business combination or
transaction are satisfied; (i) increasing the stockholder vote required to
amend, repeal or adopt any provision inconsistent with the foregoing provision
under (h) above to 80% or more of the outstanding voting securities of K N
unless approved by an affirmative vote of three-fourths of the Board of
Directors then in office who are not associated with or related to anyone who
beneficially owns, and do not themselves own, 10% or more of K N's voting
securities; (j) certain procedural requirements for stockholder nominations to
the Board of Directors; and (k) the requirement that special meetings of
stockholders may only be called by stockholders owning 51% or more of the
outstanding voting securities of K N, by a majority of the Board of Directors,
the Chairman of the Board of Directors or the President of K N.
    
 
   
     Shareholder Rights Plan.  On August 17, 1995, the Board of Directors of K N
declared a dividend of one preferred share purchase right (a "Right") with
respect to each outstanding share of Common Stock held of record on September
15, 1995 or issued thereafter and prior to the date the Rights become
exercisable. Until the Rights become exercisable, they will be evidenced by
certificates for shares of Common Stock and will automatically trade with the
Common Stock. If and when the Rights become exercisable, Rights certificates
will be distributed and the Rights will become separately tradable. The full
terms of the Rights are set forth in the Rights Agreement, dated as of August
21, 1995 (the "Rights Agreement"), between the Company and The Bank of New York,
as Rights Agent. A copy of the Rights Agreement is filed as an exhibit to the
Registration Statement.
    
 
   
     Each Right entitles the holder thereof to purchase from the Company one
one-thousandth of a share of Class B Junior Participating Series Preferred
Stock, without par value (the "Preferred Shares"), for a price of $80 per one
onethousandth of a Preferred Share (the "Purchase Price"), subject to
adjustment. The Rights become exercisable upon the earlier of (i) ten business
days following a public announcement that a person or group of affiliated or
associated persons has acquired beneficial ownership of 20% or more of the
outstanding voting shares of the Company or (ii) ten business days following the
commencement or announcement of an intention to commence a tender or exchange
offer the consummation of which would result in the beneficial ownership by a
person or group of 20% or more of the outstanding voting shares of the Company.
The Rights will expire on the later of September 15, 2005 or the third
anniversary of the date on which the Rights became exercisable (the "Final
Expiration Date"), unless the Final Expiration Date is extended or the Rights
are earlier redeemed or exchanged by the Company as described below.
    
 
   
     If a person or group were to acquire 20% or more of the voting shares of
the Company, each Right then outstanding (other than Rights beneficially owned
by the acquiring person, which would become null and void) would become a right
to buy that number of shares of Common Stock (or, under certain circumstances,
the equivalent number of one onethousandths of a Preferred Share) that at the
time of such acquisition would have a market value of two times the Purchase
Price of the Right. If the Company were acquired in a merger or other business
combination transaction or more than 50% of its consolidated assets or earning
power were sold, proper provision will be made so that holder of a Right will
thereafter have the right to receive, upon the exercise thereof at the then
current Purchase Price of the Right, that number of shares of common stock of
the acquiring company which at the time of such transaction would have a market
value of two times the Purchase Price of the Right.
    
 
   
     At any time after the acquisition by a person or group of beneficial
ownership of 20% or more of the outstanding voting shares of the Company and
before the acquisition by a person or group of 50% or more of the outstanding
voting shares of the Company, the Board of Directors may, at its option, issue
shares of Common Stock (or Preferred Shares) in mandatory redemption of, and in
exchange for, all or part of the then
    
 
                                        6
<PAGE>   46
 
   
outstanding and exercisable Rights (other than Rights owned by such person or
group, which would become null and void) at an exchange ratio of one share of
Common Stock (or one one-thousandth of a Preferred Share) for each Right,
subject to adjustment. In addition, the Company is entitled to redeem all of the
outstanding Rights at a price of $0.01 per Right at any time prior to the first
public announcement that a person or group has become the beneficial owner of
20% or more of the outstanding voting shares of the Company.
    
 
   
     Until a Right is exercised, the holder thereof, as such, has no rights as a
stockholder of the Company, including, without limitation, the right to vote or
to receive dividends.
    
 
   
KANSAS BUSINESS COMBINATION ACT
    
 
   
     K N is subject to Sections 17-12,100 et seq. of the Kansas Statutes
Annotated (the "K.S.A."), which imposes a three-year moratorium on business
combinations between a Kansas corporation and an "interested stockholder" (in
general, a stockholder owning 15% or more of a corporation's outstanding voting
stock) or an affiliate or associate thereof unless (a) prior to an interested
stockholder becoming such, the board of directors of the corporation has
approved either the business combination or the transaction by which the
interested stockholder became such; (b) upon consummation of the transaction
resulting in an interested stockholder becoming such, the interested stockholder
owns 85% of the voting stock that was outstanding at the time the transaction
commenced (excluding, from the calculation of outstanding shares, shares
beneficially owned by management, directors and certain employees stock plans);
or (c) on or after the date an interested stockholder becomes such, the business
combination is approved by (i) the Board of Directors and (ii) the affirmative
vote of the holders of at least 66 2/3% of the outstanding shares (other than
those shares beneficially owned by the interested stockholder) at a meeting of
stockholders.
    
 
   
KANSAS CONTROL SHARE ACQUISITIONS ACT
    
 
   
     K N is also subject to Sections 17-1286 et seq. of the K.S.A. (the "Kansas
Control Share Acquisitions Act"), which applies to public corporations
incorporated in Kansas that have certain other connections with the state. The
Kansas Control Share Acquisitions Act relates principally to the acquisition of
"control shares" in such a corporation. Under the Kansas Control Share
Acquisitions Act, a control share acquisition is one that, except for the
operation of the Act, would raise the acquiring person's voting power in the
election of directors of the subject corporation to or above any of three
thresholds: one-fifth or more but less than one-third of all voting power;
one-third or more but less than a majority of all voting power; and at least a
majority of all voting power. Whenever a control share acquisition occurs, the
acquiring person has no voting rights with respect to those shares unless both a
majority of all outstanding shares and a majority of all such shares excluding
all "interested shares" (in general, shares beneficially controlled by the
acquiring person or any officer or inside director of the subject corporation)
approve the acquisition. If the control shares are accorded voting rights, then
dissenters' rights are available under the Kansas Control Share Acquisitions Act
to stockholders who did not vote in favor of the control share acquisition and
who comply with certain prescribed procedures. If the stockholders vote not to
accord voting rights to the control shares, however, then the issuing
corporation has a 60-day option to redeem all such shares at market value.
    
 
   
OTHER MATTERS
    
 
   
     First Chicago Trust Company of New York serves as registrar and transfer
agent for the Common Stock and for the Class A $5.00 Cumulative Preferred Stock.
    
 
                                        7
<PAGE>   47
 
   
                              SELLING STOCKHOLDER
    
 
   
     The Selling Stockholder is a Colorado limited liability company owned
directly or indirectly by James Monroe III, individually or in his capacity as
the trustee of a family trust, Curtis R. Jensen and Paul R. Steinway
(collectively, the "Thermo Principals"). The Selling Stockholder's principal
office is located in Denver, Colorado.
    
 
   
     As of April 20, 1998, K N indirectly acquired from the Selling Stockholder
and the Thermo Principals (a) an operating interest in certain cogeneration
facilities (the "Cogeneration Interests"), (b) revenue streams and contractual
rights related to cogeneration facilities held or previously held, directly or
indirectly, by the Thermo Principals (the "Revenue Interests"), (c) the right to
acquire, upon the satisfaction of certain conditions, ownership interests in a
cogeneration facility (the "Contingent Cogeneration Purchase Right" and,
together with the Cogeneration Interests and the Revenue Interests, the
"Contributed Assets"), (d) certain assets relating to cogeneration operations
and gas marketing (the "Marketing Assets") and (e) the right to acquire, upon
the satisfaction of certain conditions, ownership interests in entities for use
in the management of cogeneration operations and gas marketing (the "Contingent
Marketing Interests" and, together with the Marketing Assets, the "Purchased
Assets"). Before its acquisition of the Contributed Assets and the Purchased
Assets, K N had no material relationship with the Selling Stockholder or the
Thermo Principals.
    
 
   
     The Contributed Assets were acquired pursuant to a Contribution Agreement
whereby the Selling Stockholder contributed the Contributed Assets (the
"Contribution") to KN Thermo, LLC ("KN Thermo"), an entity initially owned 99%
by KN Cogeneration, a wholly-owned subsidiary of K N ("KNC"), and 1% by the
Selling Stockholder. In consideration for the Contribution, the Selling
Stockholder received certain instruments (the "Deferred Payment Instruments")
payable at certain future dates in Common Stock or cash that had been
contributed by KNC to KN Thermo in exchange for its interest in KN Thermo.
    
 
   
     The first Deferred Payment Instrument provides for the payment of
approximately $34.5 million in Common Stock (the "Initial Contribution
Payment"), upon the effective date of the Registration Statement of which this
Prospectus is a part or within 10 days of such effective date if requested by
the Thermo Principals (the "Initial Payment Date"). The Initial Contribution
Payment consists of           shares of Common Stock.
    
 
   
     The Purchased Assets were acquired pursuant to a Purchase Agreement,
whereby certain of the Thermo Principals and their wholly-owned affiliates sold
the Purchased Assets to KN Thermo Acquisition, Inc., a wholly-owned subsidiary
of KN ("KNTA"). In consideration for the Purchased Assets, the Selling
Stockholder received from KNTA an instrument (the "Deferred Purchase Instrument"
and, together with the Deferred Payment Instrument, the "Payment Instruments")
in the amount of approximately $2 million (the "Purchase Payment" and together
with the Initial Contribution Payment, the "Initial Payment"), of which
approximately $     will be payable in the form of Common Stock on the Initial
Payment Date (the date of each payment under the Payment Instruments being
hereinafter referred to as a "Payment Date"). The Purchase Payment consists of
          shares of Common Stock.
    
 
   
     All required payments of Common Stock under the Payment Instruments must be
in the form of shares covered by an effective registration statement for a
period of the shorter of 120 days or until all such shares are sold (with
respect to each payment of Common Stock an "Initial Registered Period"). In
addition, the Selling Stockholder will have piggyback rights and one demand
registration right for a period of 240 days immediately succeeding each Initial
Registered Period with respect to the shares of Common Stock paid on the
preceding Payment Date (the "Subsequent Registered Period" and, together with
the Initial Registered Period, the "Covered Registered Period").
    
 
   
     The number of shares paid pursuant to the Payment Instruments will be based
on the average daily closing price of the Common Stock on the NYSE for the five
trading days immediately preceding each Payment Date.
    
 
   
     The following table sets forth, based on the Common Stock to be payable by
KNC and KNTA to the Selling Stockholder under the Initial Payment, the number of
shares of Common Stock owned by the Selling
    
 
                                        8
<PAGE>   48
 
   
Stockholder, the number of shares being offered for sale by it, the number of
such shares to be owned by the Selling Stockholder after such sale and the
percentage of ownership of the outstanding shares of Common Stock as of
         , 1998, represented by the holdings of the Selling Stockholder after
such sale:
    
 
   
<TABLE>
<CAPTION>
                                      PERCENT OF
                         SHARES TO    CLASS TO BE
SHARES      SHARES       BE OWNED        OWNED
OWNED*    BEING SOLD*   AFTER SALE*   AFTER SALE*
- ------    -----------   -----------   -----------
<S>       <C>           <C>           <C>
                               --         **
 
</TABLE>
    
 
- ---------------
   
 * Excludes shares of Common Stock to be held by the Selling Stockholder upon
   future payments on the Payment Instruments.
    
 
   
** Less than one percent.
    
 
   
     The Prospectus Supplement relating to any Securities being offered by the
Selling Stockholder sets forth the number of shares of Common Stock being
offered for its account as well as the number of such shares and the percentage
of the outstanding Common Stock to be owned by the Selling Stockholder after
completion of the offering.
    
 
   
     KNC has agreed to pay for registration fees as well as selling expenses
with respect to the resale of shares of Common Stock during the Covered
Registered Period, including brokers' fees up to an amount equal to 0.167% of
the aggregate consideration per share received by the Selling Stockholder upon
resale.
    
 
   
     This Prospectus is not the exclusive means for resale of any Common Stock
of the Selling Stockholder registered hereunder. For example, the Selling
Stockholder may also sell Common Stock owned by it pursuant to Rule 144 under
the Securities Act. There can be no assurance that the Selling Stockholder will
sell any or all of its Common Stock offered hereunder.
    
 
                                        9
<PAGE>   49
 
   
                              PLAN OF DISTRIBUTION
    
 
   
GENERAL
    
 
   
     The Selling Stockholder may sell Common Stock to or through underwriters or
dealers, and also may sell Common Stock directly to other purchasers or through
agents.
    
 
   
     The distribution of the Common Stock may be effected from time to time in
one or more transactions at a fixed price or prices, which may be changed, or at
market prices prevailing at the time of sale, at prices related to such
prevailing market prices or at negotiated prices. If so indicated in the
Prospectus Supplement, the Selling Stockholder may sell Common Stock on the NYSE
or in the over-the-counter market, by methods that include block trades,
exchange or secondary distributions in accordance with NYSE rules and ordinary
brokerage transactions.
    
 
   
     In connection with the sale of Common Stock, underwriters may receive
compensation from the Selling Stockholder or purchasers of Common Stock for whom
they may act as agents in the form of discounts, concessions or commissions.
Underwriters, dealers and agents that participate in the distribution of Common
Stock may be deemed to be underwriters, and any discounts or commissions
received by them from the Selling Stockholder and any profit on the resale of
Common Stock by them may be deemed to be underwriting discounts and commissions
under the Securities Act. Any such person who may be deemed to be an underwriter
will be identified, and any such compensation received from the Selling
Stockholder, as the case may be, will be described, in the Prospectus
Supplement.
    
 
   
     Under agreements which may be entered into by the Company or the Selling
Stockholder, underwriters, dealers and agents who participate in the
distribution of Common Stock may be entitled to indemnification by the Company
or the Selling Stockholder, as the case may be, against or contribution toward
certain liabilities, including liabilities under the Securities Act.
    
 
   
                                 LEGAL MATTERS
    
 
   
     The validity of the Common Stock will be passed upon Martha B. Wyrsch,
General Counsel of the Company, and will be passed upon for any agents, dealers
or underwriters by counsel named in the applicable Prospectus Supplement. As of
August 31, 1998, Ms. Wyrsch owned 3,253 shares of Common Stock, 4,200 shares of
restricted Common Stock and held options to purchase an additional 90,549 shares
of Common Stock. Certain legal matters will be passed upon for the Selling
Stockholder by counsel named in the applicable Prospectus Supplement.
    
 
   
                                    EXPERTS
    
 
   
     The consolidated financial statements of K N Energy, Inc. and subsidiaries
as of December 31, 1997 and 1996, and for each of the three years in the period
ended December 31, 1997, incorporated in this Prospectus and elsewhere in the
Registration Statement by reference to its Annual Report on Form 10-K for the
year ended December 31, 1997, have been audited by Arthur Andersen LLP,
independent public accountants, as indicated in their report with respect
thereto, and are incorporated by reference herein in reliance upon the authority
of said firm as experts in accounting and auditing in giving said report.
    
 
   
     The consolidated financial statements of MidCon Corp. and subsidiaries as
of December 31, 1997 and 1996, and for each of the three years in the period
ended December 31, 1997, incorporated in this Prospectus and elsewhere in the
Registration Statement by reference to the Current Report on Form 8-K/A filed
with the Commission on February 12, 1998, have been audited by Arthur Andersen
LLP, independent public accountants, as indicated in their report with respect
thereto, and are incorporated by reference herein in reliance upon the authority
of said firm as experts in accounting and auditing in giving said report.
    
 
                                       10
<PAGE>   50
 
                                    PART II
 
                     INFORMATION NOT REQUIRED IN PROSPECTUS
 
ITEM 14.  OTHER EXPENSES OF ISSUANCE AND DISTRIBUTION.
 
     The following table sets forth all expenses payable by the Company in
connection with the issuance and distribution of the Securities, other than
underwriting discounts and commissions. The Company will bear all of such
expenses. All the amounts shown are estimates, except the registration fee.
 
   
<TABLE>
<S>                                                           <C>
Registration Fee............................................  $  187,177
Fees and expenses of accountants............................      40,000
Fees and expenses of counsel to the Company.................     250,000
Fees and expenses of Trustees and counsel...................      15,000
Printing and engraving......................................      75,000
Blue Sky fees and expenses (including counsel)..............      10,000
Rating agency fees..........................................     250,000
Miscellaneous...............................................      22,823
     Total..................................................  $  850,000
</TABLE>
    
 
ITEM 15.  INDEMNIFICATION OF DIRECTORS AND OFFICERS.
 
     Section 17-6305 of the Kansas General Corporation Law provides that a
Kansas corporation shall have power to indemnify any person who was or is a
party, or is threatened to be made a party, to any threatened, pending or
completed action or suit (including an action by or in the right of the
corporation to procure a judgment in its favor) or proceeding, whether civil,
criminal, administrative or investigative, by reason of the fact that such
person is or was a director, officer, employee or agent of the corporation, or
is or was serving at the request of the corporation as a director, officer,
employee or agent of another corporation, partnership, joint venture, trust or
other enterprise, against expenses actually and reasonably incurred by such
person in connection with the defense or settlement of such action or suit by or
in the right of the corporation, including attorney fees, and against expenses,
judgments, fines and amounts paid in settlement actually and reasonably incurred
by such person in connection with such action, suit or proceeding, including
attorney fees, if such person acted in good faith and in a manner such person
reasonably believed to be in or not opposed to the best interests of the
corporation; and, with respect to any criminal action or proceeding, had no
reasonable cause to believe such person's conduct was unlawful. Article Ninth of
the articles of incorporation of the Company requires the Company to provide
substantially the same indemnification of its directors and officers as that
authorized by the Kansas General Corporation Law.
 
     The Company has insurance policies which, among other things, include
liability insurance coverage for directors and officers, with a $200,000
corporate reimbursement deductible clause, under which directors and officers
are covered against "loss" arising from any claim or claims which may be made
against a director or officer by reason of any "wrongful act" in their
respective capacities as directors and officers. "Loss" is defined so as to
exclude, among other things, fines or penalties, as well as matters deemed
uninsurable under the law pursuant to which the policy is to be construed.
"Wrongful act" is defined to include any actual or alleged breach of duty,
neglect, error, misstatement, misleading statement or omission done or
wrongfully attempted. The policy also contains other specific definitions and
exclusions and provides an aggregate of $20,000,000 of insurance coverage.
 
                                      II-1
<PAGE>   51
 
ITEM 16.  EXHIBITS.
 
     The following documents are filed as exhibits to this Registration
Statement, including those exhibits incorporated herein by reference to a prior
filing of the Company under the Securities Act or the Exchange Act as indicated
in parentheses:
 
   
<TABLE>
<CAPTION>
 EXHIBIT
  NUMBER                                   EXHIBITS
 -------                                   --------
<C>         <C>  <S>
    *(1.1)   --  Form of Underwriting Agreement relating to Debt Securities.
    *(1.2)   --  Form of Underwriting Agreement relating to Common Stock.
    *(1.3)   --  Form of Underwriting Agreement relating to Stock Purchase
                 Units.
     (2.1)   --  Stock Purchase Agreement, dated December 18, 1997, between
                 the Company and Occidental Petroleum Corporation
                 (incorporated by reference to Exhibit 2.1 to the Company's
                 S-3 Registration Statement No. 333-44421).
     (4.1)   --  Form of Indenture, dated as of November 20, 1993, between K
                 N Energy, Inc. and U.S. Bank Trust National Association
                 f/k/a First Trust National Association, as successor Trustee
                 to Continental Bank, National Association (incorporated by
                 reference to Exhibit 4.1 to the Company's S-3 Registration
                 Statement No. 33-51115).
     (4.2)   --  Form of Subordinated Indenture dated as of May 15, 1996
                 between the Company and U.S. Bank Trust National Association
                 f/k/a First Trust National Association f/k/a First Trust of
                 Illinois, National Association, as Trustee (incorporated by
                 reference to Exhibit 4.2 to the Company's S-3 Registration
                 Statement No. 333-04385).
     (4.3)   --  Form of Debt Securities. (incorporated by reference to
                 Exhibit 4.3 to Amendment No. 1 to the Company's S-3
                 Registration Statement No. 333-44421).
     (4.4)   --  Restated Articles of Incorporation of the Company
                 (incorporated by reference to Exhibit 3(a) to the Company's
                 Annual Report on Form 10-K for the year ended December 31,
                 1994).
     (4.5)   --  By-Laws of the Company, as amended to August 20, 1996
                 (incorporated by reference to Exhibit 3(b) to the Company's
                 Annual Report on Form 10-K for the year ended December 31,
                 1996).
     (4.6)   --  Rights Agreement dated as of August 21, 1995 between the
                 Company and The Bank of New York, as Rights Agent
                 (incorporated by reference to Exhibit 1 to the Company's
                 Form 8-A Registration Statement dated August 21, 1995).
   **(4.7)   --  Certificate of Trust of K N Capital Trust II.
   **(4.8)   --  Declaration of Trust of K N Capital Trust II.
   **(4.9)   --  Form of second Amended and Restated Declaration of Trust of
                 K N Capital Trust II.
  **(4.10)   --  Form of Preferred Security Certificate for K N Capital Trust
                 II (included in Exhibit 4.9).
  **(4.11)   --  Form of Debenture Indenture between K N Energy, Inc. and
                 Wilmington Trust Company, as Trustee.
  **(4.12)   --  Form of Trust Debentures of K N Energy, Inc.
  **(4.13)   --  Form of Preferred Securities Guarantee Agreement in respect
                 of K N Capital Trust II, with respect to the Preferred
                 Securities.
  **(4.14)   --  Form of Common Security Guarantee Agreement in respect of K
                 N Capital Trust II, with respect to the Common Securities.
    (4.15)   --  Form of Purchase Contract Agreement (incorporated by
                 reference to Exhibit 4.3 to Amendment No. 1 to the Company's
                 S-3 Registration Statement No. 333-44421).
    (4.16)   --  Form of Stock Purchase Units (included in Exhibit 4.15)
                 (incorporated by reference to Exhibit 4.3 to Amendment No. 1
                 to the Company's S-3 Registration Statement No. 333-44421).
    (4.17)   --  Form of Pledge Agreement (incorporated by reference to
                 Exhibit 4.3 to Amendment No. 1 to the Company's S-3
                 Registration Statement No. 333-44421).
  **(4.18)   --  first Amended and Restated Declaration of Trust of K N
                 Capital Trust II.
  **(4.19)   --  Certificate of Amendment to Restated Articles of
                 Incorporation of the Company.
  **(4.20)   --  Amendment to By-Laws of the Company.
  ***(5.1)   --  Opinion of Simpson Thacher & Bartlett, as to the legality of
                 the Trust Debentures, Guarantees, Debt Securities and Stock
                 Purchase Contracts.
   **(5.2)   --  Opinion of Richards, Layton & Finger P.A., as to the
                 validity of the Preferred Securities.
</TABLE>
    
 
                                      II-2
<PAGE>   52
 
   
<TABLE>
<CAPTION>
 EXHIBIT
  NUMBER                                   EXHIBITS
 -------                                   --------
<C>         <C>  <S>
  ***(5.3)   --  Opinion of Martha B. Wyrsch, Esq., General Counsel to K N
                 Energy, Inc., as to the validity of the Common Stock and the
                 Stock Purchase Units.
  ***(5.4)   --  Opinion of Martha B. Wyrsch, Esq., General Counsel to K N
                 Energy, Inc., as to the validity of the Common Stock to be
                 sold in a secondary offering.
   ***(12)   --  Computation of ratios of earnings to fixed charges.
 ***(23.1)   --  Consent of Independent Public Accountants.
  **(23.2)   --  Consent of Independent Public Accountants.
 ***(23.3)   --  Consent of Simpson Thacher & Bartlett (included in Exhibit
                 5.1).
  **(23.4)   --  Consent of Richards, Layton & Finger P.A. (included in
                 Exhibit 5.2).
 ***(23.5)   --  Consent of Martha B. Wyrsch (included in Exhibit 5.3).
 ***(23.6)   --  Consent of Martha B. Wyrsch (included in Exhibit 5.4).
    **(24)   --  Powers of Attorney.
  **(25.1)   --  Statement of Eligibility and Qualification under the Trust
                 Indenture Act of 1939 on Form T-1 of U.S. Bank Trust
                 National Association f/k/a First Trust National Association
                 respecting the Senior Debt Securities.
  **(25.2)   --  Statement of Eligibility and Qualification under the Trust
                 Indenture Act of 1939 on Form T-1 of U.S. Bank Trust
                 National Association f/k/a First Trust National Association
                 respecting the Subordinated Debt Securities.
  **(25.3)   --  Form T-1 Statement of Eligibility of Wilmington Trust
                 Company, as Debenture Trustee under the Debenture Indenture
                 for K N Capital Trust II.
  **(25.4)   --  Form T-1 Statement of Eligibility of Wilmington Trust
                 Company, as Institutional Trustee under the Declaration for
                 K N Capital Trust II.
  **(25.5)   --  Form T-1 Statement of Eligibility of Wilmington Trust
                 Company, as Guarantee Trustee under the Guarantee for K N
                 Capital Trust II.
</TABLE>
    
 
- ---------------
  * The Company will file any underwriting agreement relating to Debt
    Securities, Common Stock and/or Stock Purchase Units that it may enter into
    as an exhibit to a Current Report on Form 8-K which is incorporated by
    reference into this Registration Statement.
 
 ** Previously filed.
 
   
*** Filed herewith.
    
 
ITEM 17.  UNDERTAKINGS.
 
     (a) The Company hereby undertakes:
 
          (1) To file, during any period in which offers or sales are being
     made, a post-effective amendment to this registration statement:
 
             (i) To include any prospectus required by Section 10(a)(3) of the
        Securities Act;
 
             (ii) To reflect in the prospectus any facts or events arising after
        the effective date of the registration statement (or the most recent
        post-effective amendment thereof) which, individually or in the
        aggregate, represent a fundamental change in the information set forth
        in the registration statement; notwithstanding the foregoing, any
        increase or decrease in volume of securities offered (if the total
        dollar value of securities offered would not exceed that which was
        registered) and any deviation from the low or high end of the estimated
        maximum offering range may be reflected in the form of prospectus filed
        with the Commission pursuant to Rule 424(b) if, in the aggregate, the
        changes in volume and price represent no more than a 20 percent change
        in the maximum aggregate offering price set forth in the "Calculation of
        Registration Fee" table in the effective registration statement;
 
             (iii) To include any material information with respect to the plan
        of distribution not previously disclosed in the registration statement
        or any material change to such information in the registration
        statement;
 
     provided, however, that paragraphs (a)(1)(i) and (a)(1)(ii) do not apply if
     the registration statement is on Form S-3, Form S-8 or Form F-3, and the
     information required to be included in a post-effective
 
                                      II-3
<PAGE>   53
 
     amendment by those paragraphs is contained in periodic reports filed with
     or furnished to the Commission by the Company pursuant to Section 13 or
     Section 15(d) of the Exchange Act that are incorporated by reference in the
     registration statement.
 
          (2) That, for the purpose of determining any liability under the
     Securities Act, each such post-effective amendment shall be deemed to be a
     new registration statement relating to the securities offered therein, and
     the offering of such securities at that time shall be deemed to be the
     initial bona fide offering thereof.
 
          (3) To remove from registration by means of a post-effective amendment
     any of the securities being registered which remain unsold at the
     termination of the offering.
 
          (4) For purposes of determining any liability under the Securities
     Act, the information omitted from the form of prospectus filed as part of
     this registration statement in reliance upon Rule 430A and contained in a
     form of prospectus filed by the registrant pursuant to Rule 424(b)(1) or
     (4) or 497(h) under the Securities Act shall be deemed to be part of this
     registration statement as of the time it was declared effective.
 
          (5) For the purpose of determining any liability under the Securities
     Act, each post-effective amendment that contains a form of prospectus shall
     be deemed to be a new registration statement relating to the securities
     offered therein, and the offering of such securities at that time shall be
     deemed to be the initial bona fide offering thereof.
 
     (b) The Company hereby undertakes that, for purposes of determining any
liability under the Securities Act, each filing of the Company's annual report
pursuant to Section 13(a) or Section 15(d) of the Exchange Act that is
incorporated by reference in the registration statement shall be deemed to be a
new registration statement relating to the securities offered therein, and the
offering of such securities at that time shall be deemed to be the initial bona
fide offering thereof.
 
     (c) Insofar as indemnification for liabilities arising under the Securities
Act may be permitted to directors, officers and controlling persons of the
Company pursuant to any charter provision, by-law, contract, arrangement,
statute, or otherwise, the Company has been advised that in the opinion of the
Commission such indemnification is against public policy as expressed in the
Securities Act and is, therefore, unenforceable. In the event that a claim for
indemnification against such liabilities (other than the payment by the Company
of expenses incurred or paid by a director, officer or controlling person of the
Company in the successful defense of any action, suit or proceeding) is asserted
against the Company by such director, officer or controlling person in
connection with the securities being registered, the Company will, unless in the
opinion of counsel the matter has been settled by controlling precedent, submit
to a court of appropriate jurisdiction the question of whether such
indemnification by it is against public policy as expressed in the Securities
Act and will be governed by the final adjudication of such issue.
 
                                      II-4
<PAGE>   54
 
                                   SIGNATURES
 
   
     Pursuant to the requirements of the Securities Act of 1933, K N Energy,
Inc. certifies that it has reasonable grounds to believe that it meets all of
the requirements for filing on Form S-3 and has duly caused this Amendment No. 1
to Registration Statement on Form S-3 to be signed on its behalf by the
undersigned, thereunto duly authorized, in the City of Lakewood, State of
Colorado on the 7th day of October, 1998.
    
 
                                          K N ENERGY, INC.
 
                                          By:     /s/ CLYDE E. MCKENZIE
                                             -----------------------------------
 
   
     Pursuant to the requirements of the Securities Act of 1933, this Amendment
No. 1 to Registration Statement has been signed by the following persons in the
capacities indicated on October 7, 1998.
    
 
<TABLE>
<CAPTION>
                       SIGNATURE                                             TITLE
                       ---------                                             -----
<C>                                                       <S>
            i) Principal executive officer:
 
                           *                              Chairman of the Board, President and Chief
- --------------------------------------------------------    Executive Officer
                    (Larry D. Hall)
 
    ii) Principal financial and accounting officer:
 
                 /s/ CLYDE E. MCKENZIE                    Vice President and Chief Financial Officer
- --------------------------------------------------------
                  (Clyde E. McKenzie)
 
                    iii) Directors:
 
                           *
- --------------------------------------------------------
                (Edward H. Austin, Jr.)
 
                           *
- --------------------------------------------------------
                  (Charles W. Battey)
 
                           *
- --------------------------------------------------------
                   (Stewart A. Bliss)
 
                           *
- --------------------------------------------------------
                 (David W. Burkholder)
 
                           *
- --------------------------------------------------------
                 (David M. Carmichael)
 
                           *
- --------------------------------------------------------
                  (Robert H. Chitwood)
 
                           *
- --------------------------------------------------------
                  (Howard P. Coghlan)
 
                           *
- --------------------------------------------------------
                   (Jordan L. Haines)
 
                           *
- --------------------------------------------------------
                    (Larry D. Hall)
</TABLE>
 
                                      II-5
<PAGE>   55
 
<TABLE>
<CAPTION>
                       SIGNATURE                                             TITLE
                       ---------                                             -----
<C>                                                       <S>
                           *
- --------------------------------------------------------
                   (William J. Hybl)
 
                           *
- --------------------------------------------------------
                  (Richard D. Kinder)
 
                           *
- --------------------------------------------------------
                 (Edward Randall, III)
 
                           *
- --------------------------------------------------------
                   (John F. Riordan)
 
                           *
- --------------------------------------------------------
                   (James C. Taylor)
 
                           *
- --------------------------------------------------------
                    (H.A. True, III)
 
               *By: /s/ CLYDE E. MCKENZIE
  ---------------------------------------------------
                   (Clyde E. McKenzie
                   Attorney-in-Fact)
</TABLE>
 
                                      II-6
<PAGE>   56
 
                                   SIGNATURES
 
   
     Pursuant to the requirements of the Securities Act of 1933, K N Capital
Trust II certifies that it has reasonable grounds to believe that it meets all
the requirements for filing on Form S-3 and has duly caused this Amendment No. 1
to Registration Statement on Form S-3 to be signed on its behalf by the
undersigned, thereunto duly authorized, in the City of Lakewood, State of
Colorado, on the 7th day of October, 1998.
    
 
                                          K N CAPITAL TRUST II
                                          By: K N ENERGY, INC., as Depositor
 
                                          By:     /s/ CLYDE E. MCKENZIE
                                            ------------------------------------
                                                     Clyde E. McKenzie
                                                     Vice President and
                                                  Chief Financial Officer
 
                                      II-7
<PAGE>   57
 
                               INDEX TO EXHIBITS
 
<TABLE>
<CAPTION>
 EXHIBIT
  NUMBER                                   EXHIBITS
 -------                                   --------
<C>         <C>  <S>
    *(1.1)   --  Form of Underwriting Agreement relating to Debt Securities.
    *(1.2)   --  Form of Underwriting Agreement relating to Common Stock.
    *(1.3)   --  Form of Underwriting Agreement relating to Stock Purchase
                 Units.
     (2.1)   --  Stock Purchase Agreement, dated December 18, 1997, between
                 the Company and Occidental Petroleum Corporation
                 (incorporated by reference to Exhibit 2.1 to the Company's
                 S-3 Registration Statement No. 333-44421).
     (4.1)   --  Form of Indenture, dated as of November 20, 1993, between K
                 N Energy, Inc. and U.S. Bank Trust National Association
                 f/k/a First Trust National Association, as successor Trustee
                 to Continental Bank, National Association (incorporated by
                 reference to Exhibit 4.1 to the Company's S-3 Registration
                 Statement No. 33-51115).
     (4.2)   --  Form of Subordinated Indenture dated as of May 15, 1996
                 between the Company and U.S. Bank Trust National Association
                 f/k/a First Trust National Association f/k/a First Trust of
                 Illinois, National Association, as Trustee (incorporated by
                 reference to Exhibit 4.2 to the Company's S-3 Registration
                 Statement No. 333-04385).
     (4.3)   --  Form of Debt Securities. (incorporated by reference to
                 Exhibit 4.3 to Amendment No. 1 to the Company's S-3
                 Registration Statement No. 333-44421).
     (4.4)   --  Restated Articles of Incorporation of the Company
                 (incorporated by reference to Exhibit 3(a) to the Company's
                 Annual Report on Form 10-K for the year ended December 31,
                 1994).
     (4.5)   --  By-Laws of the Company, as amended to August 20, 1996
                 (incorporated by reference to Exhibit 3(b) to the Company's
                 Annual Report on Form 10-K for the year ended December 31,
                 1996).
     (4.6)   --  Rights Agreement dated as of August 21, 1995 between the
                 Company and The Bank of New York, as Rights Agent
                 (incorporated by reference to Exhibit 1 to the Company's
                 Form 8-A Registration Statement dated August 21, 1995).
   **(4.7)   --  Certificate of Trust of K N Capital Trust II.
   **(4.8)   --  Declaration of Trust of K N Capital Trust II.
   **(4.9)   --  Form of second Amended and Restated Declaration of Trust of
                 K N Capital Trust II.
  **(4.10)   --  Form of Preferred Security Certificate for K N Capital Trust
                 II (included in Exhibit 4.9).
  **(4.11)   --  Form of Debenture Indenture between K N Energy, Inc. and
                 Wilmington Trust Company, as Trustee.
  **(4.12)   --  Form of Trust Debentures of K N Energy, Inc.
  **(4.13)   --  Form of Preferred Securities Guarantee Agreement in respect
                 of K N Capital Trust II, with respect to the Preferred
                 Securities.
  **(4.14)   --  Form of Common Security Guarantee Agreement in respect of K
                 N Capital Trust II, with respect to the Common Securities.
    (4.15)   --  Form of Purchase Contract Agreement (incorporated by
                 reference to Exhibit 4.3 to Amendment No. 1 to the Company's
                 S-3 Registration Statement No. 333-44421).
    (4.16)   --  Form of Stock Purchase Units (included in Exhibit 4.15)
                 (incorporated by reference to Exhibit 4.3 to Amendment No. 1
                 to the Company's S-3 Registration Statement No. 333-44421).
    (4.17)   --  Form of Pledge Agreement (incorporated by reference to
                 Exhibit 4.3 to Amendment No. 1 to the Company's S-3
                 Registration Statement No. 333-44421).
  **(4.18)   --  first Amended and Restated Declaration of Trust of K N
                 Capital Trust II.
</TABLE>
<PAGE>   58
 
   
<TABLE>
<CAPTION>
 EXHIBIT
  NUMBER                                   EXHIBITS
 -------                                   --------
<C>         <C>  <S>
  **(4.19)   --  Certificate of Amendment to Restated Articles of
                 Incorporation of the Company.
  **(4.20)   --  Amendment to By-Laws of the Company.
  ***(5.1)   --  Opinion of Simpson Thacher & Bartlett, as to the legality of
                 the Trust Debentures, Guarantees, Debt Securities and Stock
                 Purchase Contracts.
   **(5.2)   --  Opinion of Richards, Layton & Finger P.A., as to the
                 validity of the Preferred Securities.
  ***(5.3)   --  Opinion of Martha B. Wyrsch, Esq., General Counsel to K N
                 Energy, Inc., as to the validity of the Common Stock and the
                 Stock Purchase Units.
  ***(5.4)   --  Opinion of Martha B. Wyrsch, Esq., General Counsel to K N
                 Energy, Inc., as to the validity of the Common Stock to be
                 sold in a secondary offering.
   ***(12)   --  Computation of ratios of earnings to fixed charges.
 ***(23.1)   --  Consent of Independent Public Accountants.
  **(23.2)   --  Consent of Independent Public Accountants.
 ***(23.3)   --  Consent of Simpson Thacher & Bartlett (included in Exhibit
                 5.1).
  **(23.4)   --  Consent of Richards, Layton & Finger P.A. (included in
                 Exhibit 5.2).
 ***(23.5)   --  Consent of Martha B. Wyrsch (included in Exhibit 5.3).
 ***(23.6)   --  Consent of Martha B. Wyrsch (included in Exhibit 5.4).
    **(24)   --  Powers of Attorney.
  **(25.1)   --  Statement of Eligibility and Qualification under the Trust
                 Indenture Act of 1939 on Form T-1 of U.S. Bank Trust
                 National Association f/k/a First Trust National Association
                 respecting the Senior Debt Securities.
  **(25.2)   --  Statement of Eligibility and Qualification under the Trust
                 Indenture Act of 1939 on Form T-1 of U.S. Bank Trust
                 National Association f/k/a First Trust National Association
                 respecting the Subordinated Debt Securities.
  **(25.3)   --  Form T-1 Statement of Eligibility of Wilmington Trust
                 Company, as Debenture Trustee under the Debenture Indenture
                 for K N Capital Trust II.
  **(25.4)   --  Form T-1 Statement of Eligibility of Wilmington Trust
                 Company, as Institutional Trustee under the Declaration for
                 K N Capital Trust II.
  **(25.5)   --  Form T-1 Statement of Eligibility of Wilmington Trust
                 Company, as Guarantee Trustee under the Guarantee for K N
                 Capital Trust II.
</TABLE>
    
 
- ---------------
  * The Company will file any underwriting agreement relating to Debt
    Securities, Common Stock and/or Stock Purchase Units that it may enter into
    as an exhibit to a Current Report on Form 8-K which is incorporated by
    reference into this Registration Statement.
 
 ** Previously filed.
 
   
*** Filed herewith.
    

<PAGE>   1
                                                                     Exhibit 5.1
                   [Letterhead of Simpson Thacher & Bartlett]




   
                                                                 October 7, 1998
    


K N Energy, Inc.
 K N Capital Trust II
 c/o K N Energy, Inc.
370 Van Gordon Street, P.O. Box 281304
Lakewood, Colorado 80228-8304

Ladies and Gentlemen:

               This opinion is delivered in connection with the Registration
Statement on Form S-3 (the "Registration Statement") filed under the Securities
Act of 1933, as amended (the "Act"), by K N Energy, Inc., a Kansas corporation
(the "Company"), and K N Capital Trust II, a Delaware statutory business trust
(the "Trust"), which Registration Statement relates to (i) debt securities of
the Company (the "Debt Securities"), (ii) common stock, par value $5.00 per
share (the "Common Stock"), of the Company, (iii) debentures of the Company (the
"Trust Debentures") to be purchased by the Trust with the proceeds from the sale
of preferred securities representing undivided beneficial ownership interests in
the Trust (the "Preferred Securities"), (iv) stock purchase contracts of the
Company to purchase Common Stock (the "Stock Purchase Contracts"), (v) stock
purchase units of the Company, each representing ownership of (x) a Stock
<PAGE>   2

   
K N Energy, Inc.                       -2-                   October 7, 1998
K N Capital Trust II
    


   
Purchase Contract and (y) a beneficial interest in the Preferred Securities or
debt obligations of third parties, including U.S. Treasury Securities, securing
the holder's obligation to purchase Common Stock under the Stock Purchase
Contracts (the "Stock Purchase Units"), (vi) guarantees of certain payment
obligations with respect to the Preferred Securities by the Company to be
executed by the Company and Wilmington Trust Company, as guarantee trustee (the
"Guarantees") and (vii) the Preferred Securities of the Trust, each (i) through
(vii) to be issued and sold by the Company or the Trust, as applicable, from
time to time pursuant to Rule 415 under the Act for an aggregate initial
offering price not to exceed $600,000,100.
    

         We have examined (i) the Registration Statement, (ii) the form of
Indenture to be executed by the Company and Wilmington Trust Company, as trustee
(the "Trust Debenture Indenture"), (iii) the form of Indenture dated as of
November 20, 1993, between the Company and First Trust National Association, as
successor trustee to Continental Bank, National Association (the "Senior Debt
Indenture"), (iv) the form of Subordinated Indenture dated as of May 15, 1996,
between the Company and First Trust National Association, as trustee (the
"Subordinated Debt Indenture") and (v) the form of Guarantee Agreement to be
executed by the Company and Wilmington Trust Company, as guarantee trustee (the
"Guarantee Agreement"). The Senior Debt Indenture and the Subordinated Debt
Indenture are hereinafter referred to individually as the "Debt Indenture" and
collectively as the "Debt Indentures." In addition, we have examined, and have
relied as to matters of fact upon, originals or copies, certified or otherwise
identified
<PAGE>   3

   
K N Energy, Inc.                    -3-                      October 7, 1998
K N Capital Trust II
    


to our satisfaction, of such corporate records, agreements, documents and other
instruments and such certificates or comparable documents of public officials
and of officers and representatives of the Company and the Trust, and have made
such other and further investigations, as we have deemed relevant and necessary
as a basis for the opinions hereinafter set forth.

         In such examination, we have assumed the genuineness of all signatures,
the legal capacity of natural persons, the authenticity of all documents
submitted to us as originals, the conformity to original documents of all
documents submitted to us as certified or photostatic copies, and the
authenticity of the originals of such latter documents.

         We have also assumed that (i) the Registration Statement, and any
amendments thereto (including post-effective amendments), including the form of
prospectus included therein (as supplemented, the "Prospectus"), will have
become effective under the Act, (ii) one or more prospectus supplements will
have been prepared and filed with the Commission describing the Debt Securities,
the Trust Debentures, the Stock Purchase Contracts and/or the Guarantees offered
thereby, (iii) all Debt Securities, Trust Debentures, Stock Purchase Contracts
and Guarantees issued will be issued and sold in compliance with applicable
federal and state securities laws and solely in the manner stated in the
Registration Statement and the appropriate prospectus supplement, and (iv) a
definitive purchase, underwriting or similar agreement or stock purchase
contract with respect to any Debt Securities, Trust Debentures, Stock Purchase
Contracts
<PAGE>   4

   
K N Energy, Inc.                    -4-                    October 7, 1998
K N Capital Trust II
    


or Guarantees offered will have been duly authorized and validly executed and
delivered by the Company and the other parties thereto.

         Based upon the foregoing, and subject to the qualifications and
limitations stated herein, we are of the opinion that:

                       1. With respect to the Debt Securities to be issued under
        the Debt Indentures, when (i) the Board of Directors of the Company (the
        "Board") has taken all necessary corporate action to approve the
        issuance and terms of such Debt Securities, the terms of the offering
        thereof and related matters and (ii) such Debt Securities have been duly
        executed, authenticated, issued and delivered in accordance with the
        provisions of the applicable Debt Indenture and the applicable
        definitive purchase, underwriting or similar agreement approved by the
        Board upon payment of the consideration therefor provided for therein,
        such Debt Securities will constitute valid and legally binding
        obligations of the Company, enforceable against the Company in
        accordance with their terms.

                       2. With respect to the Trust Debentures to be issued
        under the Trust Debenture Indenture, when (i) the Trust Debenture
        Indenture has been duly authorized and validly executed and delivered by
        the Company to the trustee, (ii) the Trust Debenture Indenture has been
        duly qualified under the Trust Indenture Act of 1939, as amended (the
        "Trust Indenture Act"), (iii) the Board has taken all necessary
        corporate action to approve the issuance and terms of such Trust
        Debentures, the terms of the offering thereof and related matters and
        (iv) such Trust Debentures have been duly executed, authenticated,
        issued and delivered in accordance with the provisions of the Trust
        Debenture Indenture and the applicable definitive purchase, underwriting
        or similar agreement approved by the Board upon payment of the
        consideration therefor provided for therein, such Trust Debentures will
        constitute valid and legally binding obligations of the Company,
        enforceable against the Company in accordance with their terms.

                       3. With respect to the Stock Purchase Contracts, when (i)
        the Board has taken all necessary corporate action to approve the
        issuance and terms of such Stock Purchase Contracts, the terms of the
        offering thereof and related matters and (ii) such Stock Purchase
        Contracts have been duly executed, issued and delivered upon payment of
        the consideration therefor provided for therein, such Stock Purchase
        Contracts will constitute valid and legally binding obligations of the
        Company, enforceable against the Company in accordance with their terms.
<PAGE>   5

   
K N Energy, Inc.                    -5-                       October 7, 1998
K N Capital Trust II
    


                       4. With respect to the Guarantees, when (i) the Guarantee
        Agreement has been duly authorized, executed and delivered by the
        Company to the guarantee trustee, (ii) the Guarantee Agreement has been
        duly qualified under the Trust Indenture Act, (iii) the Board has taken
        all necessary corporate action to approve the issuance and terms of such
        Guarantees and related matters, (iv) such Guarantees have been duly
        executed, issued and delivered in accordance with the provisions of the
        Guarantee Agreement approved by the Board upon payment of the
        consideration therefor provided for therein and (v) upon payment for and
        delivery of the Preferred Securities in accordance with the applicable
        purchase agreement, the Guarantees will constitute valid and legally
        binding obligations of the Company enforceable against the Company in
        accordance with their terms.

               Our opinions set forth above are subject to the effects of
bankruptcy, insolvency, fraudulent conveyance, reorganization, moratorium and
other similar laws relating to or affecting creditors' rights generally, general
equitable principles (whether considered in a proceeding in equity or at law)
and an implied covenant of good faith and fair dealing.

               We are members of the Bar of the State of New York and we do not
express any opinion herein concerning any law other than the law of the State of
New York and the federal law of the United States.

               We hereby consent to the filing of this opinion of counsel as
Exhibit 5.1 to the Registration Statement and to the use of our name under the
caption "Legal Matters" in the Prospectus forming a part of the Registration
Statement.
                                            Very truly yours,
   
                                            /s/ SIMPSON THACHER & BARTLETT
    
                                            SIMPSON THACHER & BARTLETT

<PAGE>   1

                                                                     Exhibit 5.3
   
                                                    October 7, 1998
    

                        [Letterhead of K N Energy, Inc.]

K N Energy, Inc.
K N Capital Trust II
c/o K N Energy, Inc.
370 Van Gordon Street
Lakewood, Colorado 80228-8304

Ladies and Gentlemen:

            This opinion is delivered in connection with the Registration
Statement on Form S-3 (the "Registration Statement") filed under the Securities
Act of 1933, as amended (the "Act"), by K N Energy, Inc., a Kansas corporation
(the "Company"), and K N Capital Trust II, a Delaware statutory business trust
(the "Trust"), which Registration Statement relates to (i) debt securities of
the Company (the "Debt Securities"), (ii) common stock, par value $5.00 per
share (the "Common Stock"), of the Company, (iii) debentures of the Company (the
"Trust Debentures") to be purchased by the Trust with the proceeds from the sale
of preferred securities representing undivided beneficial ownership interests in
the Trust (the "Preferred Securities"), (iv) stock purchase contracts of the
Company to purchase Common Stock (as defined below) (the "Stock Purchase
Contracts"), (v) stock purchase units of the Company, each representing
ownership of (x) a Stock Purchase Contract and (y) a beneficial interest in the
Preferred Securities or debt obligations of third parties, including U.S.
Treasury Securities, securing the holder's obligation to purchase Common Stock
under the Stock Purchase Contracts
<PAGE>   2
   


K N Energy, Inc.                                                 October 7, 1998
K N Capital Trust II                                            
    
   

(the "Stock Purchase Units"), (vi) guarantees of certain payment obligations
with respect to the Preferred Securities by the Company to be executed by the
Company and Wilmington Trust Company, as guarantee trustee (the "Guarantees")
and (vii) the Preferred Securities of the Trust, each of (i) through (vii) to be
issued and sold by the Company or the Trust, as applicable, from time to time
pursuant to Rule 415 under the Act for an aggregate initial offering price not
to exceed $600,000,100.
    

            In preparation for rendering my opinion hereafter expressed, I have
examined the Registration Statement and originals or copies certified to my
satisfaction of corporate records and other documents and certificates as I have
deemed necessary.

            Based upon the foregoing, and subject to the qualifications and
limitations stated herein, I am of the opinion that:

                  1. With respect to shares of Common Stock, when (i) the Board
      of Directors of the Company (the "Board") has taken all necessary
      corporate action to approve the issuance of and the terms of the offering
      of the shares of Common Stock and related matters, and (ii) certificates
      representing the shares of Common Stock have been duly executed,
      countersigned, registered and delivered either (a) in accordance with the
      applicable definitive purchase, underwriting or similar agreement approved
      by the Board upon payment of the consideration therefor (not less than the
      par value of the Common Stock) provided for therein, or (b) upon
      conversion or exercise of any other security, in accordance with the terms
      of such security or the instrument governing such security providing for
      such conversion or exercise as approved by the Board, for the
      consideration approved by the Board (not less than the par value of the
      Common Stock), the shares of Common Stock will be duly authorized, validly
      issued, fully paid and nonassessable.

                  2. With respect to the Stock Purchase Units, when (i) the
      Board has taken all necessary corporate action to approve the issuance and
      terms of such Stock Purchase Units and (ii) such Stock Purchase Units have
      been duly issued and delivered in accordance with the provisions of the
      Registration Statement, the Prospectus and any prospectus supplement
      relating thereto approved by the Board upon payment of the consideration
      therefor provided for therein, assuming that the terms of such Stock
      Purchase Units are in compliance with then applicable law, such Stock
      Purchase Units will be duly authorized, validly issued, fully paid and
      nonassessable.
<PAGE>   3
   

K N Energy, Inc.                     -3-                         October 7, 1998
K N Capital Trust II
    


            I am a member of the Bar of the State of Colorado and I do not
express any opinion herein concerning any law other than the law of the States
of Colorado and, to the extent set forth herein, Kansas and the federal law of
the United States.

            I hereby consent to the filing of this opinion of counsel as Exhibit
5.3 to the Registration Statement and to the use of my name under the caption
"Legal Matters" in the prospectus forming a part of the Registration Statement.

                                    Very truly yours,

                                    /s/ Martha B. Wyrsch

                                    Martha B. Wyrsch, Esq.


<PAGE>   1
   
                          [K N Energy, Inc. Letterhead]

                                                                     Exhibit 5.4


    
   
                                           October 7, 1998
    


K N Energy, Inc.
370 Van Gordon Street
Lakewood, Colorado 80228-8304

Ladies and Gentlemen:

                  I am General Counsel for K N Energy, Inc. (the "Company"). I
have acted in such capacity in connection with the proposed sale of the number
of shares of common stock, par value $5.00 per share, of the Company to be
registered pursuant to the Form S-3 Registration Statement No. 333-55921 filed
by the Company with the Securities and Exchange Commission under the Securities
Act of 1933 (the "Registration Statement"), all of such shares to be sold by
certain stockholders of the Company (the "Shares") described in the Registration
Statement.

                  In preparation for rendering my opinion hereinafter expressed,
I have examined the Registration Statement and originals or copies certified to
my satisfaction of corporate records and other documents and certificates as I
have deemed necessary.

                  Based upon the foregoing, I am of the opinion that the Shares
have been duly authorized by the Company and, when issued and delivered in
accordance with the terms of (a) the Contribution Agreement dated as of April
20, 1998 (the "Contribution Agreement"), by and among Thermo LLC, a Colorado
limited liability company ("New Thermo"), Thermo Ft. Lupton, L.P., a Colorado
limited partnership ("TFLP"), Thermo Investments Limited Partnership, a Colorado
limited partnership ("TILP"), Crystal River Energy Company, a California
corporation ("Crystal River"), James Monroe III, Curtis R. Jensen, Paul R.
Steinway and KN Cogeneration, Inc., a Colorado corporation ("KNC"), and the
Stock Obligation (as defined in the Contribution Agreement) payable thereunder
on the Initial Payment Date (as defined in the Contribution Agreement) and (b)
the Purchase Agreement dated as of April 20, 1998 (the "Purchase Agreement"), by
and among James Monroe III, Thermo Greely I, Inc., a Colorado corporation
("Greely I"), and KN Thermo Acquisition, Inc., a Colorado corporation ("KNTA"),
and the Stock Obligation (as defined in the Purchase Agreement) payable
thereunder on the Payment Date (as defined in the Purchase Agreement), in each
case as amended and modified in accordance with the terms and provisions of the
Transaction Modification Agreement dated as of August 27, 1998, by and among New
Thermo, TFLP, TILP, Crystal River, James Monroe III, both individually and in
his capacity as trustee, Curtis R.
[/R]
<PAGE>   2
                                                                               2
   


Jensen, Paul R. Steinway, Greely I, KNTA and KNC, will have been validly issued
and will be fully paid and nonassessable.

                  I hereby consent to the filing of this opinion of counsel as
Exhibit 5.4 to the Registration Statement and to the use of my name under the
caption "Legal Matters" in the prospectus forming a part of the Registration
Statement.

                                                  Very truly yours,

                                                  /s/ Martha B. Wyrsch

                                                  Martha B. Wyrsch, Esq.
    


<PAGE>   1
                                                                      EXHIBIT 12

                        K N ENERGY, INC. AND SUBSIDIARIES
                       RATIO OF EARNINGS TO FIXED CHARGES

   
<TABLE>
<CAPTION>
                                       SIX      
                                      MONTHS      
                                      ENDED     
                                     JUNE 30,                         YEARS ENDED DECEMBER 31,
                                     ---------    -----------------------------------------------------
                                        1998       1997       1996         1995       1994        1993 
                                     ---------    -------   ---------    -------    --------   --------
                                                           (DOLLARS IN THOUSANDS)
<S>                                   <C>         <C>        <C>        <C>        <C>         <C>     
Earnings:
  Income From Continuing
    Operations per Statements
    of Income.......................   $ 39,197   $ 77,497    $ 63,819   $ 52,522   $15,321     $30,869
  Add:
    Interest and Debt Expense, Net..    115,479     51,248      37,760     34,316    32,009      31,478
    Income Taxes....................     23,021     35,661      35,897     29,050     9,500      18,599
    Portion of Rents Representative
      of the Interest Factor........     14,945     12,473       7,417      5,082     3,492       2,863
  Less:
    Undistributed Earnings of Less
      Than 50%-Owned Subsidiaries...      5,641      3,875         --          --        --          --
                                       --------   --------    --------   --------   -------     -------
    Income as Adjusted..............   $187,001   $173,004    $144,893   $120,970   $60,322     $83,809
                                       ========   ========    ========   ========   =======     =======
Fixed Charges:
  Interest and Debt Expense, Net, 
    per Statements of Income 
    (Includes Amortization of Debt 
    Discount, Premium and Expense)..   $113,833   $ 43,495    $ 35,933   $ 34,211    $31,815    $30,909
  Add:
    Interest Capitalized............      1,646      7,753       1,827        105        338        965
    Portion of Rents Representative
       of the Interest Factor.......     14,945     12,473       7,417      5,082      3,492      2,863
    Preferred Stock Dividends of
       Subsidiary...................         --         --          --         --         --         69
                                       --------   --------    --------   --------    -------    -------
    Fixed Charges...................   $130,424   $ 63,721    $ 45,177   $ 39,398    $35,645    $34,806
                                       ========   ========    ========   ========    =======    =======
Ratio of Earnings to Fixed Charges..       1.43       2.72       3.21       3.07        1.69       2.41
                                       ========   ========    ========   ========    =======    =======
</TABLE>
    

<PAGE>   1
                       [ARTHUR ANDERSEN LLP LETTER HEAD]




                                                                    EXHIBIT 23.1




                   CONSENT OF INDEPENDENT PUBLIC ACCOUNTANTS



As independent public accountants, we hereby consent to the incorporation by
reference in this Registration Statement of our report dated February 3, 1998,
included in K N Energy, Inc.'s Annual Report on Form 10-K for the year ended
December 31, 1997, and to all references to our Firm included in this
Registration Statement.


                                         /s/ Arthur Andersen LLP


Denver, Colorado
   
October 7, 1998.
    



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