KEMPER DEFINED FUNDS SERIES 15
S-6EL24, 1994-02-11
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<PAGE>   1
   AS FILED WITH THE SECURITIES AND EXCHANGE COMMISSION ON FEBRUARY 11, 1994
                                                                 CIK #910705
                                                                                
                       SECURITIES AND EXCHANGE COMMISSION
                             WASHINGTON, D.C. 20549
                                                

                             REGISTRATION STATEMENT
                                       ON
                                    FORM S-6
                                                

               FOR REGISTRATION UNDER THE SECURITIES ACT OF 1933
                    OF SECURITIES OF UNIT INVESTMENT TRUSTS
                           REGISTERED ON FORM N-8B-2

A.  EXACT NAME OF TRUST:
                                        KEMPER DEFINED FUNDS SERIES 15

B.  NAME OF DEPOSITOR:
                                        KEMPER UNIT INVESTMENT TRUSTS
                                        a service of KEMPER SECURITIES, INC.

C.  COMPLETE ADDRESS OF DEPOSITOR'S PRINCIPAL EXECUTIVE OFFICES:
                         KEMPER UNIT INVESTMENT TRUSTS
                        77 West Wacker Drive, 5th Floor
                            Chicago, Illinois  60601

D.  NAME AND COMPLETE ADDRESS OF AGENT FOR SERVICE:
<TABLE>
      <S>                                                                <C>
                                                                                Copy to:
                                                                             MARK J. KNEEDY
              C. Perry Moore                                             c/o Chapman and Cutler
      77 West Wacker Drive, 5th Floor                                    111 West Monroe Street
         Chicago, Illinois  60601                                        Chicago, Illinois  60603
</TABLE>

                        CALCULATION OF REGISTRATION FEE
                                                                               

<TABLE>
<CAPTION>
            Title and amount of                                             Proposed maximum              Amount of
        securities being registered                                     aggregate offering price      registration fee
- ------------------------------------------------------------------------------------------------------------------------------
<S>                                       <C>                                     <C>                        <C>
Series 15                                 An indefinite number of Units
                                          of Beneficial Interest pursuant         Indefinite                 $500
                                          to Rule 24f-2 under the
                                          Investment Company Act of 1933
                                                                                            
- -----------------------------------------------------------------------------------------------------------------------------
</TABLE>

E.  APPROXIMATE DATE OF PROPOSED SALE TO PUBLIC:

         As soon as practicable after the effective date of the Registration
Statement.

         The registrant hereby amends this Registration Statement on such date
or dates as may be necessary to delay its effective date until the registrant
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 or until the Registration Statement shall become
effective on such date as the Commission, acting pursuant to said Section 8(a)
may determine.

<PAGE>   2
                         KEMPER DEFINED FUNDS SERIES 15

                                                

                             CROSS-REFERENCE SHEET

 (FORM N-8B-2 ITEMS REQUIRED BY INSTRUCTIONS AS TO THE PROSPECTUS IN FORM S-6)

<TABLE>
<CAPTION>
         Form N-8B-2                                                       Form S-6
         Item Number                                                       Heading in Prospectus
         -----------                                                       ---------------------

                                                       I.  ORGANIZATION AND GENERAL INFORMATION
<S>      <C>                                                               <C>
1.       (a) Name of trust                                                 Prospectus front cover
         (b) Title of securities issued                                    Prospectus front cover
2.       Name and address of each depositor                                Miscellaneous - Sponsor
3.       Name and address of trustee                                       Miscellaneous - Trustee
4.       Name and address of principal underwriters                        Public Offering of Units
5.       State of organization of trust                                      The GNMA Trust Funds;
6.       Execution and termination of trust                                  The GNMA Trust Funds;
                                                                             Administration of the
                                                                             Trust Funds - Amendments; -
                                                                             Termination
7.       Changes of name                                                   *
8.       Fiscal year                                                       Tax Status
9.       Litigation                                                        *


                                  II.  GENERAL DESCRIPTION OF THE TRUST AND SECURITIES OF THE TRUST

10.      (a) Registered or bearer securities                               Rights of Unitholders -
                                                                             Ownership of Units
         (b) Cumulative or distributive securities                         Administration of the Trust
                                                                             Funds - Distributions from
                                                                             the Interest, Principal and
                                                                             Capital Gains Accounts
         (c) Redemption                                                    Redemption
         (d) Conversion, transfer, etc.                                    Rights of Unitholders - Ownership
                                                                             of Units; Public Offering of
                                                                             Units - Secondary Market
</TABLE>

<PAGE>   3

<TABLE>
<CAPTION>

         Form N-8B-2                                                       Form S-6
         Item Number                                                       Heading in Prospectus
         -----------                                                       ---------------------

<S>      <C>                                                               <C>
         (e) Periodic payment plan. . . . . . . . . . . . . . . . .        *
         (f) Voting rights. . . . . . . . . . . . . . . . . . . . .        Rights of Unitholders
         (g) Notice of certificateholders . . . . . . . . . . . . .        Administration of the Trusts
                                                                             Funds - Portfolio Supervision;
                                                                             Amendment; Termination; Reports
                                                                             to Unitholders
         (h) Consents required. . . . . . . . . . . . . . . . . . .        Rights of Unitholders; Administration of
                                                                             the Trust Funds; Amendment;
                                                                             Termination
         (i) Other provisions . . . . . . . . . . . . . . . . . . .        Tax Status
11.      Type of securities comprising units                               The GNMA Trust Funds;
                                                                             Schedules of Investments; Life of
                                                                             the Securities and of the GNMA
                                                                             Trust Funds; Portfolio Selection
12.      Certain information regarding periodic
           payment certificates . . . . . . . . . . . . . . . . . .        *
13.      (a) Load, fees, expenses, etc. . . . . . . . . . . . . . .        Essential Information; Public
                                                                             Offering of Untis; Comparison
                                                                             of Public Offering Price and
                                                                             Redemption Value; Estimated Current
                                                                             Return and Estimated Long-Term Return
                                                                             per 1,000 Units; Expenses and Charges
         (b) Certain information regarding periodic
              payment certificates. . . . . . . . . . . . . . . . .        *
         (c) Certain percentages. . . . . . . . . . . . . . . . . .        Essential Information; Public Offering
                                                                             of Units
         (d) Certain other fees, etc. payable
              by holders. . . . . . . . . . . . . . . . . . . . . .        Rights of Unitholders - Ownership
                                                                             of Units
         (e) Certain profits receivable by depositor,
              principal, underwriters, trustee or
              affiliated persons. . . . . . . . . . . . . . . . . .        Expenses and Charges; Public
                                                                             Units
         (f) Ratio of annual charges to income. . . . . . . . . . .        *
14.      Issuance of trust's securities                                    The GNMA Trust Funds; Rights
                                                                             of Unitholders - Ownership of Units
15.      Receipt and handling of payments
           from purchasers. . . . . . . . . . . . . . . . . . . . .        *

16.      Acquisition and disposition of underlying
           securities                                                      The GNMA Trust Funds; Portfolio
</TABLE>




                                     -ii-

<PAGE>   4

<TABLE>
<CAPTION>
         Form N-8B-2                                                       Form S-6
         Item Number                                                       Heading in Prospectus
         -----------                                                       ---------------------
<S>      <C>                                                               <C>

                                                                             Selection; Administration of the Trust
                                                                             Funds - Portfolio Supervision

17.      Withdrawal or redemption. . . . . . . . . . . . . . . . . . .     Public Offering of Units - Secondary
                                                                             Market; Redemption; Comparison of
                                                                             Public Offering Price and Redemption
                                                                             Value
18.      (a) Receipt, custody and disposition
              of income. . . . . . . . . . . . . . . . . . . . . . . .     Administration of the Trust Funds -
                                                                             Distributions from the Interest,
                                                                             Principal and Capital Gains Accounts
         (b) Reinvestment of distributions . . . . . . . . . . . . . .     Reinvestment Program
         (c) Reserves or special funds . . . . . . . . . . . . . . . .     Expenses and Charges
         (d) Schedule of distributions . . . . . . . . . . . . . . . .     *
19.      Records, accounts and reports . . . . . . . . . . . . . . . .     Administration of the Trust Funds -
                                                                             Reports to Unitholders; Records and
                                                                             Accounts; Miscellaneous Trustee
20.      Certain miscellaneous provisions of trust
           agreement
         (a) Amendment . . . . . . . . . . . . . . . . . . . . . . . .     Administration of the Trust
                                                                             Funds-Amendment
         (b) Termination . . . . . . . . . . . . . . . . . . . . . . .     Administration of the Trust Funds
                                                                             Termination
         (c) and (d) Trustee, removal and successor. . . . . . . . . .     Resignation, Removal and Liability
                                                                             Regarding the Trustee
         (e) and (f) Depositor, removal and
           successor . . . . . . . . . . . . . . . . . . . . . . . . .     Resignation, Removal and Liability
                                                                             Regarding the Sponsor
21.      Loans to security holders . . . . . . . . . . . . . . . . . .     *
22.      Limitations on liability. . . . . . . . . . . . . . . . . . .     Resignation, Removal and Liability
23.      Bonding arrangements. . . . . . . . . . . . . . . . . . . . .     *
24.      Other material provisions of trust
           agreement . . . . . . . . . . . . . . . . . . . . . . . . .     *


                                  III.  ORGANIZATION, PERSONNEL AND AFFILIATED PERSONS OF DEPOSITOR

25.      Organization of depositor . . . . . . . . . . . . . . . . . .     Miscellaneous - Sponsor
26.      Fees received by depositor. . . . . . . . . . . . . . . . . .     See Items 13(a) and 13(e)
27.      Business of depositor . . . . . . . . . . . . . . . . . . . .     Miscellaneous Sponsor
28.      Certain information as to officials and
           affiliated persons of depositor . . . . . . . . . . . . . .     Miscellaneous - Sponsor
</TABLE>




                                     -iii-

<PAGE>   5

<TABLE>
<CAPTION>
         Form N-8B-2                                                       Form S-6
         Item Number                                                       Heading in Prospectus
         -----------                                                       ---------------------
<S>      <C>                                                               <C>
29.      Voting securities of depositor . . . . . . . . . . . . . . . . .  Miscellaneous - Sponsor
30.      Persons controlling depositor  . . . . . . . . . . . . . . . . .  Miscellaneous - Sponsor
31.      Payment by depositor for certain services
           rendered to trust  . . . . . . . . . . . . . . . . . . . . . .  *
32.      Payment by depositor for certain other
           services rendered to trust . . . . . . . . . . . . . . . . . .  *
33.      Remuneration of employees of depositor
           for certain services rendered to trust . . . . . . . . . . . .  *
34.      Remuneration of other persons for certain
           services rendered to trust . . . . . . . . . . . . . . . . . .  *


                                                   IV. DISTRIBUTION AND REDEMPTION

35.      Distribution of Trust's securities
           by states  . . . . . . . . . . . . . . . . . . . . . . . . . .  Public Offering of Units
36.      Suspension of sales of trust's securities. . . . . . . . . . . .  *
37.      Revocation of authority to distribute. . . . . . . . . . . . . .  *
38.      (a) Method of Distribution . . . . . . . . . . . . . . . . . . .  Public Offering of Units
         (b) Underwriting Agreements. . . . . . . . . . . . . . . . . . .  Public Offering of Units
         (c) Selling Agreements . . . . . . . . . . . . . . . . . . . . .  Public Offering of Units
39.      (a) Organization of principal underwriters . . . . . . . . . . .  Miscellaneous Sponsor
         (b) N.A.S.D. membership of principal
           underwriters . . . . . . . . . . . . . . . . . . . . . . . . .  Miscellaneous Sponsor
40.      Certain fees received by principal
           underwriters . . . . . . . . . . . . . . . . . . . . . . . . .  See Items 13(a) and 13(e)
41.      (a) Business of principal underwriters . . . . . . . . . . . . .  Miscellaneous Sponsor
         (b) Branch offices of principal
           underwriters . . . . . . . . . . . . . . . . . . . . . . . . .  *
         (c) Salesmen of principal underwriters . . . . . . . . . . . . .  *
42.      Ownership of trust's securities by
           certain persons. . . . . . . . . . . . . . . . . . . . . . . .  *
43.      Certain brokerage commissions received by
           principal underwriters . . . . . . . . . . . . . . . . . . . .  Public Offering of Units; Profits
                                                                             of Sponsor
44.      (a) Method of valuation  . . . . . . . . . . . . . . . . . . . .  Public Offering of Units Comparison
                                                                             of Public Offering Price and
                                                                             Redemption Value
         (b) Schedule as to offering price. . . . . . . . . . . . . . . .  *
         (c) Variation in offering price to
           certain persons. . . . . . . . . . . . . . . . . . . . . . . .  Public Offering of Units
</TABLE>




                                     -iv-

<PAGE>   6

<TABLE>
<CAPTION>
         Form N-8B-2                                                       Form S-6
         Item Number                                                       Heading in Prospectus
         -----------                                                       ---------------------
<S>      <C>                                                               <C>
45.      Suspension of redemption rights . . . . . . . . . . . . . . .     Redemption
46.      (a) Redemption valuation  . . . . . . . . . . . . . . . . . .     Redemption; Public Offering of
                                                                             Units -Secondary Market; Comparison
                                                                             of Public Offering Price and
                                                                             Redemption Price
         (b) Schedule as to redemption price   . . . . . . . . . . . .     *
47.      Maintenance of position in underlying
           securities  . . . . . . . . . . . . . . . . . . . . . . . .      Public Offering of Units-Secondary
                                                                             Market; Comparison of Public Offering
                                                                             Price and Redemption Value;
                                                                             Redemption


                                         V.  INFORMATION CONCERNING THE TRUSTEE OR CUSTODIAN

48.      Organization and regulation of trustee  . . . . . . . . . . .    Administration of the Trust Funds;
                                                                             Miscellaneous - Trustee
49.      Fees and expenses of trustee  . . . . . . . . . . . . . . . .    Expenses and Charges
50.      Trustee's lien    . . . . . . . . . . . . . . . . . . . . . .    Expenses and Charges


                                              VI.  INFORMATION CONCERNING INSURANCE OF
                                                        HOLDERS OF SECURITIES

51.      Insurance of holders of trust's securities  . . . . . . . . .    *


                                                      VII.  POLICY OF REGISTRANT

52.      (a) Provisions of trust agreement with
              respect to selection or elimination
              of underlying securities   . . . . . . . . . . . . . . .       The GNMA Trust Funds; Portfolio
                                                                             Selection; Schedules of
                                                                             Investments; Administration of the Trust
                                                                             Funds-Portfolio Supervision
         (b) Transactions involving elimination of
              underlying securities  . . . . . . . . . . . . . . . . .     *
         (c) Policy regarding substitution or
              elimination of underlying securities . . . . . . . . . .     Administration of the Trust Funds-
                                                                             Portfolio Supervision
         (d) Fundamental policy not otherwise
              covered  . . . . . . . . . . . . . . . . . . . . . . . .     *
53.      Tax status of Trust   . . . . . . . . . . . . . . . . . . . .     Tax Status

                                            VIII.  FINANCIAL AND STATISTICAL INFORMATION

54.      Trust's securities during last ten years  . . . . . . . . . .     *
55-58.  Certain information regarding periodic
             payment certificates  . . . . . . . . . . . . . . . . . .     *
59.      Financial statements (Instruction 1(c)
           to Form S-6)  . . . . . . . . . . . . . . . . . . . . . . .     Statements of Net Assets; Report
                                                                             of Independent Accountants
</TABLE>




                                     -v-

<PAGE>   7
                Preliminary Prospectus Dated February 11, 1994

                        KEMPER DEFINED FUNDS Series 15

                                 1,000 Units

        The attached final Prospectus for a prior Series of the trust is being
used as a preliminary Prospectus for the above stated Series.  The narrative
information and structure of the attached final Prospectus will be substantially
the same as that of the final Prospecuts for this Series.  Information with
respect to pricing, the number of Units, dates and summary information
regarding the characteristics of securities to be deposited in this Series is
not now available and will be different since each Series has a unique
Portfolio.  Accordingly the information contained herein with regard to the
previous Series should be considered as being included for informational
purposes only.  Ratings of the sercurities in this Series are expected to be
comparable to those of the securities deposited in the previous Series. 
However, the Estimated Long-Term and Current Return for this Series will depend
on the interest rates and offering prices of the sercurities in this Series and
may vary materially from that of the previous Series.

        A registration statement relating to the units of this Series has been
filed with the Securities and Exchange Commission but has not yet become
effective.  Information contained herein is subject to completion or amendment. 
Such Units 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 the Units in any state in which such offer, solicitation
or sale would be unlawful prior to registration or qualification under the
securities laws of any such state. 





<PAGE>   8
 
                 PRELIMINARY PROSPECTUS DATED SEPTEMBER 9, 1993
                             SUBJECT TO COMPLETION
 
KEMPER DEFINED FUNDS SERIES 5
 
GNMA PORTFOLIO, SERIES 1,
U.S. TREASURY PORTFOLIO, SERIES 1 AND
U.S. TREASURY PORTFOLIO, SERIES 2
 
(EACH SERIES HEREIN IS A UNIT INVESTMENT TRUST)
 
Each Series of the GNMA Portfolio was formed for the purpose of obtaining safety
of capital and current monthly distributions of interest and principal through
investment in a portfolio primarily consisting of mortgage-backed Securities of
the modified pass-through type. All payments of principal and interest on the
mortgage-backed Securities are fully guaranteed by the Government National
Mortgage Association ('GNMA'). The full faith and credit of the United States is
pledged to the payment of the Securities in each series of the GNMA Portfolios
but the Units themselves of such Series are not backed by such full faith and
credit. Each U.S. Treasury Portfolio was formed for the purpose of providing
safety of capital and investment flexibility through an investment in a
portfolio of U.S. Treasury Obligations that are backed by the full faith and
credit of the United States Government. Interest income distributed by the U.S.
Treasury Portfolio Series is exempt from state personal income taxes in all
states. Certain Series of the Trust may be available to non-resident aliens and
the income from such Series, provided certain conditions are met, will be exempt
from withholding for U.S. Federal income tax for such foreign investors. A
FOREIGN INVESTOR MUST PROVIDE A COMPLETED W-8 FORM TO HIS FINANCIAL
REPRESENTATIVE OR THE TRUSTEE TO AVOID WITHHOLDING ON HIS ACCOUNT. The value of
the Units, the estimated current return and the estimated long-term return to
new purchasers will fluctuate with the value of the portfolio which will
generally decrease or increase inversely with changes in interest rates.
 
Units of the GNMA Portfolio Series and U.S. Treasury Portfolio Series are
particularly well suited for purchase by Individual Retirement Accounts, Keogh
Plans, pension funds and other tax deferred retirement plans. Minimum purchase
for any Series of the Trust: $1,000 ($250 for IRA accounts).
- --------------------------------------------------------------------------------
 
                     SPONSOR: KEMPER UNIT INVESTMENT TRUSTS
                     (A service of Kemper Securities, Inc.)
- --------------------------------------------------------------------------------
 
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.
THE INVESTOR IS ADVISED TO READ AND RETAIN THIS PROSPECTUS FOR FUTURE REFERENCE.
       INQUIRIES ABOUT YOUR ACCOUNT SHOULD BE DIRECTED TO THE TRUSTEE AT
                                1-800-422-2848.
                       Prospectus dated September 9, 1993

<PAGE>   9
 
KEMPER DEFINED FUNDS SERIES 5
 
ESSENTIAL INFORMATION
AT THE OPENING OF BUSINESS ON THE INITIAL DATE OF DEPOSIT
SPONSOR AND EVALUATOR: KEMPER UNIT INVESTMENT TRUSTS, A SERVICE OF
                       KEMPER SECURITIES, INC.
                 TRUSTEE: INVESTORS FIDUCIARY TRUST COMPANY
 
<TABLE>
<CAPTION>
                                                                                                       U.S.          U.S.
                                                                                         GNMA        TREASURY      TREASURY
                                                                                       SERIES 1      SERIES 1      SERIES 2
                                                                                      -----------   -----------   -----------
<S>                                                                                   <C>           <C>           <C>
Public Offering Price per Unit......................................................  $    10.074   $    10.307   $    10.350
Principal Amount of Securities per Unit.............................................  $    10.000   $    10.000   $    10.000
Estimated Current Return based on Public Offering Price(1)(2)(3)....................         5.34%         4.44%         4.88%
Estimated Long-Term Return(1)(2)(3).................................................         5.44%         4.29%         4.84%
Principal Amount of Securities......................................................  $   500,000   $ 1,000,000   $   500,000
Number of Units.....................................................................       50,000       100,000        50,000
Fractional Undivided Interest per Unit..............................................     1/50,000     1/100,000      1/50,000
Calculation of Public Offering Price--Less than 10,000 Units:
    Aggregate Offering Price of Securities..........................................  $   486,040   $ 1,005,067   $   499,950
    Aggregate Offering Price of Securities per Unit.................................  $     9.721   $    10.051   $     9.999
    Purchased Interest(4)...........................................................            0   $     7,580   $     2,277
    Purchased Interest per Unit.....................................................  $     0.000   $     0.076   $     0.046
      Total Offering Price and Purchased Interest Per Unit(4).......................  $     9.721   $    10.127   $    10.045
    Plus Sales Charge per Unit(7)...................................................  $     0.353   $     0.180   $     0.305
  Public Offering Price per Unit(4).................................................  $    10.074   $    10.307   $    10.350
Redemption Price per Unit...........................................................  $     9.686   $    10.103   $    10.021
Sponsor's Initial Repurchase Price per Unit.........................................  $     9.721   $    10.127   $    10.045
Excess of Public Offering Price per Unit over Redemption Price per Unit.............  $     0.388   $     0.204   $     0.329
Excess Public Offering Price per Unit over Sponsor's Initial Repurchase Price per
  Unit..............................................................................  $     0.353   $     0.180   $     0.305
Calculation of Estimated Net Annual Interest Rate per Unit:
    Estimated Annual Interest Rate..................................................       5.5750%       4.6975%       5.1938%
    Less: Estimated Annual Expenses expressed as a percentage.......................       0.1900%       0.1140%       0.1420%
                                                                                      -----------   -----------   -----------
    Estimated Net Annual Interest Rate..............................................       5.3850%       4.5835%       5.0518%
Estimated Daily Rate of Net Interest Accrual per Unit...............................  $  0.001496   $  0.001273   $  0.001403
Trustee's Annual Fee per $1,000 principal amount of Securities(5)...................  $     1.175   $     0.660   $     0.840
Trustee's Annual Estimated Expenses per $1,000 principal amount of Securities(5)....  $     0.300   $     0.130   $     0.230
Interest Payments(6):
  First Payment per Unit, representing 15 days......................................  $   0.02244   $   0.01910   $   0.02105
Sales Charge(7):
  As a percentage of Public Offering Price per Unit.................................        3.500%        1.750%        2.950%
  As a percentage of net amount invested............................................        3.631%        1.777%        3.036%
  As a percentage of net amount invested in earning assets..........................        3.631%        1.791%        3.050%
Type of GNMA Securities.............................................................       Midget            --            --
Estimated Average Life of GNMA Securities...........................................    7.0 years            --            --
Weighted Average Years to Maturity..................................................           --           4.7           8.5
Evaluator's Maximum Annual Evaluation Fee per $1,000 Principal Amount of
  Securities........................................................................  $     0.175   $     0.250   $     0.250
Sponsor's Maximum Annual Surveillance Fee per $1,000 Principal Amount of
  Securities........................................................................  $     0.250   $     0.100   $     0.100
Cusip Numbers.......................................................................    487904765     487904781     487904773
- -------------------------
Evaluations for purposes of sale, purchase or redemption of Units are made as of the close of business of the Sponsor (3:15
  p.m. Central Time) next following receipt of an order for a sale or purchase of Units or receipt by Investors Fiduciary
Trust Company of Units tendered for redemption.
</TABLE>
 
                                       2

<PAGE>   10
 
ESSENTIAL INFORMATION--(CONTINUED)
 
<TABLE>
<S>                                                                             <C>
Initial Date of Deposit.......................................................  September 9, 1993
First Settlement Date.........................................................  September 16, 1993
Mandatory Termination Date....................................................  December 31, 2027
Minimum principal value of the Trust under which Trust Agreement may be
  terminated..................................................................  40% of the initial aggregate principal
                                                                                amount of Securities deposited in the Trust
</TABLE>
 
- ---------------
(1) The Estimated Current Return and Estimated Long-Term Return are increased
    for transactions entitled to a reduced sales charge. See 'Public Offering of
    Units--Public Offering Price.'
 
(2) The Estimated Current Returns are calculated by dividing the estimated net
    annual interest rate per Unit by the Public Offering Price. The estimated
    net annual interest rate per Unit will vary with changes in fees and
    expenses of the Trustee, the Sponsor and the Evaluator and with the
    principal prepayment, redemption, maturity, exchange or sale of Securities
    while the Public Offering Price will vary with changes in the offering price
    of the underlying Securities and with changes in the Purchased Interest and
    Daily Accrued Interest; therefore, there is no assurance that the present
    Estimated Current Returns indicated above will be realized in the future.
    The Estimated Long-Term Returns are calculated using a formula which (1)
    takes into consideration, and determines and factors in the relative
    weightings of, the market values, yields (which takes into account the
    amortization of premiums and the accretion of discounts) and, in the case of
    GNMA Portfolio Series, the estimated average life of all the Securities in
    such series or, in the case of US. Treasury Portfolio Series, the estimated
    retirement dates of all of the Securities in the applicable series and (2)
    takes into account the expenses and sales charge associated with each Trust
    Unit. Since the market values and the estimated average lives or estimated
    retirement dates, as the case may be, of the Securities and expenses of each
    Trust will change, there is no assurance that the present Estimated
    Long-Term Returns as indicated above will be realized in the future. The
    Estimated Current Returns and Estimated Long-Term Returns are expected to
    differ because the calculation of the Estimated Long-Term Returns reflects
    the estimated date and amount of principal returned while the Estimated
    Current Return calculations includes only the net annual interest rate and
    Public Offering Price.
 
(3) This figure is based on estimated per Unit cash flows. Estimated cash flows
    will vary with changes in fees and expenses, with changes in current
    interest rates and with the principal prepayment, redemption, maturity,
    call, exchange or sale of the underlying Securities and, in the case of GNMA
    Portfolio Series, with changes in the average life assumptions of the GNMA
    pools. The estimated cash flows to Unitholders for the Trusts are either set
    forth under 'Estimated Cash Flows to Unitholders' or are available upon
    request at no charge from the Sponsor.
 
(4) Purchased interest is the unpaid interest that has accumulated on the
    Securities in a Trust from the later of the last payment date on the
    Securities or the date of issuance thereof through the First Settlement Date
    of such Trust. In addition, anyone ordering Units after the Initial Date of
    Deposit will pay Daily Accrued Interest from the later of the First
    Settlement Date or the last Record Date for such Trust to the date of
    settlement (five business days after order). Daily Accrued Interest is the
    estimated daily rate of net interest accrued on the Securities in a Trust.
 
(5) See 'Expenses and Charges.'
 
(6) Unitholders will receive interest distributions monthly. The Record Date is
    the first day of the month, commencing October 1, 1993, and the distribution
    date is the fifteenth day of the month, commencing October 15, 1993.
 
(7) The sales charge as a percentage of the net amount invested in earning
    assets will increase as Daily Accrued Interest increases. Transactions
    subject to quantity discounts (see 'Public Offering of Units--Public
    Offering Price') will have reduced sales charges, thereby reducing all
    percentages in the table.
 
                                       3

<PAGE>   11
 
THE TRUST FUNDS
 
GENERAL
 
Kemper Defined Funds Series 5 (GNMA Portfolio, Series 1, U.S. Treasury
Portfolio, Series 1 and U.S. Treasury Portfolio, Series 2) (the 'Trust') is
comprised of separate 'unit investment trusts' created under Missouri law
pursuant to separate Trust Indenture and Agreements (hereinafter collectively
referred to as the 'Indenture')* between Kemper Unit Investment Trusts, a
service of Kemper Securities, Inc. (the 'Sponsor') and Investors Fiduciary Trust
Company (the 'Trust'). For information regarding the relationship between the
Sponsor and the Trustee, see 'Miscellaneous -- Trustee.' On the date of this
Prospectus (the 'Initial Date of Deposit') the Sponsor deposited the underlying
Securities of the Trust with the Trustee at prices equal to the valuation of
such Securities on the offering side of the market on such date as determined by
the Evaluator, and the Trustee delivered to the Sponsor units of interest
('Units') representing the entire ownership of such Series of the Trust. Except
as otherwise indicated in the 'Portfolios,' the Securities so deposited were
represented by purchase contracts assigned to the Trustee together with an
irrevocable letter or letters of credit issued by a commercial bank or banks in
the amount necessary to complete the purchase thereof. Unitholders of the Trust
will have the right to have their Units redeemed at a price based on the
aggregate bid side evaluation of the Securities in the portfolio of the Trust
('Redemption Price per Unit'), if they cannot be sold in the over-the-counter
market which the Sponsor proposes to maintain. See 'Public Offering of Units --
Secondary Market.'
 
The purpose and objective of each Series of the Trust is to provide investors
with an appropriate vehicle to obtain safety of capital and monthly
distributions of interest and principal through investment in a fixed portfolio
of securities primarily consisting of taxable mortgage-backed securities of the
modified pass-through type ('Ginnie Maes') guaranteed by the Government National
Mortgage Association ('GNMA') and backed by the full faith and credit of the
United States in the case of GNMA Portfolio Series and an investment in a fixed,
laddered portfolio of interest-bearing U.S. Treasury Obligations in the case of
U.S. Treasury Portfolio Series. GNMA Portfolio Series 1 also includes zero
coupon U.S. Treasury Obligations. In addition, GNMA Foreign Investors Portfolio
Series, if any, which are available only to non-resident alien investors, have
an additional purpose of providing income which is exempt from withholding for
U.S. Federal income taxes for such foreign investors. A foreign investor must
provide a completed W-8 Form to his financial representative or the Trustee to
avoid withholding on his account. See 'Tax Status.' The U.S. Treasury Portfolio
Series is also formed for the purpose of providing protection against changes in
interest rates and also passing through to Unitholders in all states the
exemption from state personal income taxes afforded to direct owners of U.S.
obligations. The Securities are direct obligations of the United States and are
backed by its full faith and credit. For all Series of the Trust value of the
Units, the estimated current return and estimated long-term return to new
purchasers will fluctuate with the value of the Securities included in the
portfolio which will generally decrease or increase inversely with changes in
interest rates. See 'Tax Status.'
 
As used herein, the term 'Securities' or 'Portfolio Obligations' means the
Ginnie Maes and zero coupon U.S. Treasury Obligations initially deposited in the
GNMA Portfolio Series of the Trust described herein or the U.S. Treasury
Obligations initially deposited in the U.S. Treasury Portfolio Series of the
Trust and includes all contracts to purchase such Ginnie Maes and U.S. Treasury
Obligations accompanied by an irrevocable letter of credit sufficient to perform
such contracts initially deposited in the Trust Funds and described herein under
'Portfolio' for each Trust and any additional Ginnie Maes and U.S. Treasury
Obligations deposited in the GNMA Portfolio Series of U.S. Treasury Portfolio
Series, respectively, of the Trust following the Initial Date of Deposit.
 
- ---------------
 
* To the extent reference is made to the Indenture, any statements herein are
  qualified in their entirety by
 
  the provisions of said Indenture.
 
                                       4

<PAGE>   12
 
With the deposit of the Securities in the Trust on the Initial Date of Deposit,
the Sponsor established for each Series a percentage relationship between the
principal amounts of Securities of specified interest rates and ranges of
maturities in the related Portfolio. From time to time, pursuant to the
Indenture, following the Initial Date of Deposit the Sponsor may deposit
additional Securities in each Series of the Trust and Units may be continuously
offered for sale to the public by means of this Prospectus resulting in a
potential increase in the outstanding number of Units of such Series. Any
additional Securities deposited in each Series of the Trust will maintain as far
as practicable the original percentage relationship between the principal
amounts of Securities of specified interest rates and ranges of maturities in
the original Portfolio of such Series. Precise duplication of this original
percentage relationship may not be possible because fractions of Securities may
not be purchased, but duplication will continue to be the goal in connection
with any such additional Securities. Under certain circumstances, the Sponsor
may also direct the Trustee to reinvest certain surplus monies in the principal
account of certain GNMA Portfolio Series in additional Ginnie Maes. See
'Portfolio Selection.' See 'Administration of the Trust Funds--Portfolio
Supervision.'
 
On the Initial Date of Deposit, each Unit represented the fractional undivided
interest in the Securities and estimated net income of the Series of the Trust
set forth under 'Essential Information' in the ratio of 100 Units for each
$1,000 face amount of Securities initially deposited in that Series of the
Trust. Because regular payments of principal are to be received and certain of
the Securities from time to time may be redeemed or will mature in accordance
with their terms or may be sold under certain circumstances described herein and
because additional Securities may be deposited into each Series of the Trust
from time to time, each Series of the Trust is not expected to retain its
present size and composition. Units will remain outstanding until redeemed upon
tender to the Trustee by any Unitholder (which may include the Sponsor) or until
the termination of that Series of the Trust pursuant to the Indenture.
 
The guaranteed payment of principal and interest afforded by both Ginnie Maes
and U.S. Treasuries may make investment in either type of Trust particularly
well suited for purchase by Individual Retirement Accounts, Keogh Plans, pension
funds and other tax-deferred retirement plans. In addition, the ability to buy
Units (minimum purchase $1,000 per Series, $250 for IRA accounts) at a Public
Offering Price of approximately $10.00 per Unit enables such investors to tailor
the dollar amount of their purchases of Units to take maximum possible advantage
of the annual deductions available for contributions to such plans. Investors
should consult with their tax advisers before investing. See 'Retirement Plans.'
 
Monthly Distributions. Monthly distributions of principal, prepayments of
principal, if any, and interest received by each GNMA Series and distributions
from the U.S. Treasury Portfolio Series will be paid in cash unless the
Unitholder elects to have them automatically reinvested in any open-end mutual
fund underwritten or advised by an affiliate of the Sponsor, Kemper Financial
Services, Inc. (the 'Kemper Funds'), other than those Kemper Funds sold with a
contingent deferred sales charge. Since the portfolio securities and investment
objectives of such Kemper Funds may differ significantly from that of the GNMA,
or U.S. Treasury Portfolios Trust Funds, Unitholders should carefully consider
the consequences before selecting such Kemper Funds for reinvestment. Any such
reinvestment is made at net asset value (that is, without a sales charge).
Investors have the ability to designate that only principal payments (including
prepayments) or only interest payments or both are to be reinvested (see
'Reinvestment Program'). However, because of the small dollar amounts involved
and the fact that the Trust is not required to make a principal distribution
unless the amount in the Principal Account for such Series is equivalent to
$1.00 or more per 100 Units, it is not anticipated that any distribution of
principal will be made until several months after the Initial Date of Deposit.
At that time any principal payments accumulated in an account will be
distributed. Once distributions of principal commence, they will be made in
accordance with the instructions of the investor in any month the amount in the
Principal Account equals or exceeds $1.00 per 100 Units. It should be noted by
foreign purchasers of certain GNMA Portfolios, if offered, that distributions
 
                                       5

<PAGE>   13
 
from the reinvestment fund chosen generally will be subject to U.S. Federal
income tax withholding. Distributions will be made on or about the 15th day of
each month to Unitholders of record on the 1st day of such month, commencing
with the first distribution indicated herein under 'Essential Information.'
 
Special Considerations. An investment in Units of the GNMA Portfolio Series and
U.S. Treasury Portfolio Series should be made with an understanding of the risks
which an investment in fixed-rate long-term debt obligations and U.S. Treasury
obligations, respectively, may entail, including the risk that the value of the
portfolio and hence of the Units will decline with increases in interest rates.
Some or all of the Securities in the Trust Fund have been purchased at a market
discount. The current returns (coupon interest rate) of such Securities are
lower than the current returns of similar, comparably rated, securities issued
at currently prevailing interest rates.
 
Estimated Current Return and Estimated Long-Term Return. As of the opening of
business of the Date of Deposit, the Estimated Long-Term Return and Estimated
Current Return, if applicable, for each Trust were as set forth in 'Essential
Information.' The Estimated Current Return is calculated by dividing the
estimated net annual interest rate per Unit by the Public Offering Price. The
net estimated annual interest rate per Unit will vary with changes in the fees
and expenses of the Trustee, Sponsor and Evaluator and with the exchange,
redemption, sale, scheduled payments, prepayments or maturity of underlying
Securities in the portfolio. The Public Offering Price of the Trust will also
vary with fluctuations in the evaluation of the underlying Securities and with
changes in the Purchased Interest and Daily Accrued Interest; therefore, there
is no assurance that the present Estimated Current Return will be realized in
the future. The Estimated Long-Term Return is calculated using a formula which
(1) takes into consideration, and determines and factors in the relative
weightings of, the market values, yields (which takes into account the
amortization of premiums and the accretion of discounts) and, in the case of the
GNMA Portfolio Series, estimated average life of all of the Securities in such
Series, or in the case of the U.S. Treasury Portfolio Series, the estimated
retirements of all the Securities in such Series and (2) takes into account the
expenses and sales charge associated with each Unit of the Trust. Since the
market values and the estimated average lives or estimated retirements, as the
case may be, of the Securities and the expenses of the Trust will change, it can
be expected that the Estimated Long-Term Returns will fluctuate in the future.
Estimated Current Return and Estimated Long-Term Return are expected to differ
because the calculation of the Estimated Long-Term Return reflects the estimated
date and amount of principal returned while the Estimated Current Return
calculation includes only the net annual interest rate and Public Offering
Price.
 
Market for Units. After the initial offering period, while under no obligation
to do so, the Sponsor intends to, and certain of the other Underwriters may,
maintain a market for the Units and to offer to repurchase such Units at prices
subject to change at any time which are based on the aggregate bid side
evaluation of the Securities in the Trust Fund plus Purchased Interest and Daily
Accrued Interest.
 
THE GNMA PORTFOLIO SERIES
 
Each GNMA Portfolio Series is a unit investment trust whose objectives are to
obtain safety of capital and to provide current monthly distributions of
interest and principal through investment in a fixed portfolio initially
consisting primarily of contracts to purchase taxable mortgage-backed securities
of the modified pass-through type ('Ginnie Maes' or 'Securities'), including
so-called 'Ginnie Mae II's,' which involve larger pools of mortgages and which
have a central paying agent, fully guaranteed as to principal and interest by
the Government National Mortgage Association ('GNMA'). All of the Ginnie Maes in
the Trusts consist of pools of long term mortgages on 1-to 4-family dwellings.
GNMA Portfolio, Series 1 also includes certain zero coupon Treasury Obligations.
 
                                       6

<PAGE>   14
 
An investment in Units of the GNMA Trust Fund should be made with an
understanding of the risks which an investment in fixed rate long term debt
obligations may entail, including the risk that the value of the portfolio and
hence of the Units will decline with increases in interest rates. The value of
the underlying Securities will fluctuate inversely with changes in interest
rates. In addition, the potential for appreciation of the underlying Securities,
which might otherwise be expected to occur as a result of a decline in interest
rates, may be limited or negated by increased principal prepayments in respect
of the underlying mortgages. The high inflation of prior years, together with
the fiscal measures adopted to attempt to deal with it, have resulted in wide
fluctuations in interest rates and, thus, in the value of fixed rate long term
debt obligations generally. The Sponsor cannot predict whether such fluctuations
will continue in the future.
 
The Securities in the Trust Fund were chosen in part on the basis of their
respective stated maturity dates. The ranges of maturity dates of each of the
Securities contained in the Trust are shown on the 'Portfolios.' The stated
mandatory termination date of the GNMA Portfolios are set forth under 'Essential
Information.' See 'Life of the Securities and of the GNMA Trust Funds' below.
 
The GNMA Trust Fund may be an appropriate medium for investors who desire to
participate in a portfolio of taxable fixed income securities offering the
safety of capital provided by securities backed by the full faith and credit of
the United States but who do not wish to invest the minimum $25,000 which is
required for a direct investment in GNMA guaranteed securities.
 
The portfolio of each GNMA Trust Fund initially consists of contracts to
purchase Ginnie Maes, including so-called Ginnie Mae II's, fully guaranteed as
to payments of principal and interest by the Government National Mortgage
Association. In order for the Ginnie Maes to be eligible for inclusion in GNMA
Foreign Investors Portfolio Series, if any, evidence must be received by the
Sponsor that the underlying mortgages were originated after July 18, 1984.
Although the Sponsor believes that all the underlying mortgages were originated
after July 18, 1984, to the extent that this is not the case, a Foreign Investor
will be subject to withholding for U.S. Federal income taxes on income derived
from mortgages that were originated on or prior to July 18, 1984. See 'Tax
Status.'
 
Each group of Ginnie Maes described herein as having a specified range of
maturities includes individual mortgage-backed securities which have varying
ranges of maturities within each range specified under 'Essential Information.'
Each such group of Ginnie Maes is described as one category of securities
because current market conditions accord no difference in price among the
individual Ginnie Mae securities within such group on the basis of the
difference in the maturity dates of each Ginnie Mae. As long as this market
condition prevails, a purchase of Ginnie Maes with the same coupon rate and a
maturity date within the range mentioned above will be considered an acquisition
of the same Security. In the future, however, the difference in maturity ranges
could affect the market value of the individual Ginnie Maes. At such time, any
additional purchases by a GNMA Portfolio Series of the Trust will take into
account the maturities of the individual Securities.
 
The GNMA Portfolio Series of the Trust may contain Securities which were
acquired at a market discount. Such Securities trade at less than par value
because the interest rates thereon are lower than interest rates on comparable
debt securities being issued at currently prevailing interest rates. If such
interest rates for newly issued and otherwise comparable securities increase,
the market discount of previously issued securities will increase and if such
interest rates for newly issued comparable securities decline, the market
discount of previously issued securities will decrease, other things being
equal. Market discount attributable to interest rate changes does not indicate a
lack of market confidence in the issue.
 
                                       7

<PAGE>   15
 
Holders of Units will be 'at risk' with respect to such Securities (i. e., may
derive either gain or loss from fluctuations in the evaluation of the
Securities) from the date they commit for Units. See 'Estimated Current Return
and Estimated Long-Term Return.'
 
The mortgages underlying a Ginnie Mae may be prepaid at any time without
penalty. A lower or higher return on Units may occur depending on whether the
price at which the respective Ginnie Maes were acquired by the GNMA Portfolio
Series of the Trust is lower or higher than par (which represents the price at
which such Ginnie Maes will be redeemed upon prepayment). Redemption of premium
Ginnie Maes at par pursuant to prepayments of mortgages will operate to lower
the current return on Units of such Series outstanding at that time since
premium Ginnie Maes normally carry higher interest coupons than par or discount
Ginnie Maes. If mortgage rates decline in the future, such prepayments may occur
with increasing frequency because, among other reasons, mortgagors may be able
to refinance their outstanding mortgages at lower interest rates. See 'Life of
the Securities and of the GNMA Trust Funds.'
 
Set forth below is a brief description of the current method of origination of
Ginnie Maes; the nature of such securities, including the guaranty of GNMA; the
basis of selection and acquisition of the Ginnie Maes included in the GNMA
portfolio; and the expected life of the Ginnie Maes and GNMA Portfolio Series of
the Trust. The 'Portfolios' contain information concerning the coupon rate and
range of stated maturities of the Ginnie Maes in the GNMA Portfolio Series of
the Trust.
 
Origination. The Ginnie Maes included in the GNMA Portfolio Series are backed by
the indebtedness secured by underlying mortgage pools of long-term mortgages on
1-to 4-family dwellings. In the case of GNMA Foreign Investors Portfolio Series,
which may be acquired only by qualified foreign investors, the Sponsor has
acquired only pools containing mortgages which it believes were originated after
July 18, 1984. The pool of mortgages which is to underlie a particular new issue
of Ginnie Maes is assembled by the proposed issuer of such Ginnie Maes. The
issuer is typically a mortgage banking firm, and in every instance must be a
mortgagee approved by and in good standing with the Federal Housing
Administration ('FHA'). In addition, GNMA imposes its own criteria on the
eligibility of issuers, including a net worth requirement.
 
The mortgages which are to comprise a new Ginnie Mae pool may have been
originated by the issuer itself in its capacity as a mortgage lender or may be
acquired by the issuer from a third party. Such third party may be another
mortgage banker, a banking institution, the Veterans Administration ('VA')
(which in certain instances acts as a direct lender and thus originates its own
mortgages) or one of several governmental agencies. All mortgages in any given
pool will be insured under the National Housing Act, as amended ('FHA-insured')
or Title V of the Housing Act of 1949 ('FMHA-insured') or guaranteed under the
Servicemen's Readjustment Act of 1944, as amended, or Chapter 37 of Title 38,
U.S.C. ('VA-guaranteed'). Such mortgages will have a date for the first
scheduled monthly payment of principal that is not more than one year prior to
the date on which GNMA issues its guaranty commitment as described below, will
have comparable interest rates and maturity dates, and will meet additional
criteria of GNMA. All mortgages in the pools backing the Ginnie Maes contained
in the GNMA Portfolio Series are mortgages on 1-to 4-family dwellings. In
general, the mortgages in these pools provide for monthly payments over the life
of the mortgage (aside from prepayments) designed to repay the principal of the
mortgage over such period, together with interest at the fixed rate of the
unpaid balance.
 
To obtain GNMA approval of a new pool of mortgages, the issuer will file with
GNMA an application containing information concerning itself, describing
generally the pooled mortgages, and requesting that GNMA approve the issue and
issue its commitment (subject to GNMA's satisfaction with the mortgage documents
and other relevant documentation) to guarantee the timely payment of principal
of and interest on the Ginnie Maes to be issued by the issuer. If the
application is in order, GNMA will issue its commitment and will assign a GNMA
pool number to the pool. Upon completion of the required
 
                                       8

<PAGE>   16
 
documentation (including detailed information as to the underlying mortgages, a
custodial agreement with a Federal or state regulated financial institution
satisfactory to GNMA pursuant to which the underlying mortgages will be held in
safekeeping, and a detailed guaranty agreement between GNMA and the issuer) the
issuance of the Ginnie Maes is permitted. When the Ginnie Maes are issued, GNMA
will endorse its guaranty thereon. The aggregate principal amount of Ginnie Maes
issued will be equal to the then aggregate unpaid principal balances of the
pooled mortgages. The interest rate borne by the Ginnie Maes is currently fixed
at 1/2 of 1% below the interest rate of the pooled 1-to 4-family mortgages, the
differential being applied to the payment of servicing and custodial charges as
well as GNMA's guaranty fee.
 
Ginnie Mae II's consist of jumbo pools of mortgages consisting of pools of
mortgages from more than one issuer. The major advantage of Ginnie Mae II's lies
in the fact that a central paying agent sends one check to the holder on the
required payment date. This greatly simplifies the current procedure of
collecting distributions from each issuer of a Ginnie Mae, since such
distributions are often received late.
 
Nature of Ginnie Maes and GNMA Guaranty. All of the Ginnie Maes in the GNMA
Portfolio Series, including the Ginnie Mae II's, are of the 'modified
pass-through' type, i.e., they provide for timely monthly payments to the
registered holders thereof (including a GNMA Portfolio Series of the Trust) of a
pro rata share of the scheduled principal payments on the underlying mortgages,
whether or not collected by the issuers. Such monthly payments will also
include, on a pro rata basis, any prepayments of principal of such mortgages
received and interest (net of the servicing and other charges described above)
on the aggregate unpaid principal balance of such Ginnie Maes, whether or not
the interest on the underlying mortgages has been collected by the issuers.
 
The Ginnie Maes in the GNMA Portfolio Series are guaranteed as to timely payment
of principal and interest by GNMA. Funds received by the issuers on account of
the mortgages backing the Ginnie Maes in the GNMA Portfolio Series are intended
to be sufficient to make the required payments of principal of and interest on
such Ginnie Maes but, if such funds are insufficient for that purpose, the
guaranty agreements between the issuers and GNMA require the issuers to make
advances sufficient for such payments. If the issuers fail to make such
payments, GNMA will do so.
 
GNMA is authorized by Section 306(g) of Title III of the National Housing Act to
guarantee the timely payment of principal of and interest on securities which
are based on or backed by a trust or pool composed of mortgages insured by FHA,
the Farmers' Home Administration ('FMHA') or guaranteed by the VA. Section
306(g) provides further that the full faith and credit of the United States is
pledged to the payment of all amounts which may be required to be paid under any
guaranty under such subsection. An opinion of an Assistant Attorney General of
the United States, dated December 9, 1969, states that such guaranties
'constitute general obligations of the United States backed by its full faith
and credit.'* GNMA is empowered to borrow from the United States Treasury to the
extent necessary to make any payments of principal and interest required under
such guaranties. Ginnie Maes are backed by the aggregate indebtedness secured by
the underlying FHA-insured, FMHA-insured or VA-guaranteed mortgages and, except
to the extent of funds received by the issuers on account of such mortgages,
Ginnie Maes do not constitute a liability of nor evidence any recourse against
such issuers, but recourse thereon is solely against GNMA. Holders of Ginnie
Maes (such as the GNMA Portfolio Series of the Trust) have no security interest
in or lien on the underlying mortgages.
 
- ---------------
 
* Any statement in this Prospectus that a particular Security is backed by the
full faith and credit of the United States is based upon the opinion of an
Assistant Attorney General of the United States and should be so construed.
 
                                       9

<PAGE>   17
 
The GNMA guaranties referred to herein relate only to payment of principal of
and interest on the Ginnie Maes in the portfolio and not to the Units offered
hereby.
 
Life of the Securities and of the GNMA Trust Funds. Monthly payments of
principal will be made, and additional prepayments of principal may be made, to
the GNMA Trust Funds in respect of the mortgages underlying the Ginnie Maes in
each GNMA Portfolio Series. All of the mortgages in the pools relating to the
Ginnie Maes in each GNMA Portfolio Series are subject to prepayment without any
significant premium or penalty at the option of the mortgagors. It has been the
experience of the mortgage industry that the average life of mortgages
comparable to those contained in the GNMA Portfolio Series, owing to
prepayments, refinancings and payments from foreclosures is considerably less
than the stated maturity for each series set forth in 'Essential Information.'
 
In the mid 1970's, published tables for Ginnie Maes utilized a 12 year average
life assumption for Ginnie Mae pools of 26-30 year mortgages on 1-to 4-family
dwellings. This assumption was derived from the FHA experience relating to
prepayments on such mortgages during the period from the mid 1950's to the mid
1970's. This 12 year average life assumption was calculated in respect of a
period during which mortgage lending rates were fairly stable. That assumption
is probably no longer an accurate measure of the life of Ginnie Maes or their
underlying single family mortgage pools. However, current yield tables,
published in 1981, still utilize the 12 year average life assumption and Ginnie
Maes continue to be traded based on this assumption. Recently it has been
observed that mortgages issued at high interest rates have experienced
accelerated prepayment rates which would indicate a shorter average life than 12
years.
 
A number of factors, including homeowner's mobility, change in family size and
mortgage market interest rates will affect the average life of the Ginnie Maes
in the Trust Funds. For example, Ginnie Maes issued during a period of high
interest rates will be backed by a pool of mortgage loans bearing similarly high
rates. In general, during a period of declining interest rates, new mortgage
loans with interest rates lower than those charged during periods of high rates
will become available. To the extent a homeowner has an outstanding mortgage
with a high rate, he may refinance his mortgage at a lower interest rate or he
may rapidly repay his old mortgage. Should this happen, a Ginnie Mae issued with
a high interest rate may experience a rapid prepayment of principal as the
underlying mortgage loans prepay in whole or in part. Accordingly, there can be
no assurance that the prepayment levels which will be actually realized will
conform to the experience of the FHA, other mortgage lenders or other Ginnie Mae
investors. It is not possible to meaningfully predict prepayment levels
regarding the Ginnie Maes in the Trust Fund. Therefore, the termination of the
Trust Fund might be accelerated as a result of prepayments made as described
herein.
 
In addition to prepayments as described above, sales of Securities in the Trust
Fund under certain permitted circumstances may result in an accelerated
termination of the Trust Fund. Also, it is possible that, in the absence of a
secondary market for the Units or otherwise, redemptions of Units may occur in
sufficient numbers to reduce the Trust Fund to a size resulting in such
termination. Early termination of the Trust Fund may have important consequences
to the Unitholder; e.g., to the extent that Units were purchased with a view to
an investment of longer duration, the overall investment program of the investor
may require readjustment; or the overall return on investment may be less or
greater than anticipated, depending in part on whether the purchase price paid
for Units represented the payment of an overall premium or a discount,
respectively, above or below the stated principal amounts of the underlying
mortgages. In addition, a capital gain or loss may result for tax purposes from
termination of a GNMA Portfolio Series.
 
                                       10

<PAGE>   18
 
THE U.S. TREASURY PORTFOLIO SERIES.
 
Each U.S. Treasury Portfolio Series is a unit investment trust whose objective
is to obtain safety of capital and investment flexibility as well as current
monthly distributions of interest through investment in a fixed, laddered
portfolio initially consisting of contracts to purchase interest-bearing U.S.
Treasury obligations (the 'U.S. Treasury Obligations'). The U.S. Treasury
Portfolio Series are formed for the purpose of providing protection against
changes in interest rates and also passing through to Unitholders in all states
the exemption from state personal income taxes afforded to direct owners of U.S.
obligations. The U.S. Treasury Portfolio Series has an additional purpose of
providing income which is exempt from withholding for U.S. Federal income taxes
for non-resident alien investors. A foreign investor must provide a completed
W-8 Form to his financial representative or the Trustee to avoid withholding on
his account. The Securities are direct obligations of the United States and are
backed by its full faith and credit.
 
An investment in Units of the U.S. Treasury Portfolio Series should be made with
an understanding of the risks which an investment in fixed rate debt obligations
may entail, including the risk that the value of the Portfolio and hence of the
Units will fluctuate inversely with changes in interest rates. The high
inflation of prior years, together with the fiscal measures adopted to attempt
to deal with it, have resulted in wide fluctuations in interest rates and, thus,
in the value of fixed rate long term debt obligations generally. The Sponsor
cannot predict whether such fluctuations will continue in the future.
 
In selecting Securities for deposit in the U.S. Treasury Portfolio Series, the
following factors, among others, were considered by the Sponsor: (i) the prices
of the Securities relative to other comparable Securities; (ii) the maturities
of these Securities; and (iii) whether the Securities were issued after July 18,
1984.
 
The U.S. Treasury Portfolio Series may be an appropriate medium for investors
who desire to participate in a portfolio of taxable fixed income securities
offering the safety of capital provided by an investment backed by the full
faith and credit of the United States. In addition, many investors may benefit
from the exemption from state and local personal income taxes that will pass
through the U.S. Treasury Portfolio Series to Unitholders in virtually all
states.
 
The Portfolios initially consists of contracts to purchase U.S. Treasury
Obligations fully secured by the full faith and credit of the United States,
certain of which have been purchased at a market discount or premium. Certain
Securities may have been purchased on a when, as and if issued basis. Interest
on these Securities begins accruing to the benefit of holders on their
respective dates of delivery. Unitholders will be 'at risk' with respect to
these Securities (i.e. may derive either gain or loss from fluctuations in the
offering side evaluation of the Securities) from the date they commit for Units.
 
The Trusts consists of the U.S. Treasury Securities (or contracts to purchase
the Securities) listed in the Portfolio as may continue to be held from time to
time in the Trust and any additional Securities deposited in the Funds in
connection with the sale of additional Units to the public as described above,
together with the accrued and undistributed interest thereon and undistributed
cash realized from the sale or redemption of Securities (see 'Administration of
the Trust Funds--Portfolio Supervision'). Neither the Sponsor nor the Trustee
shall be liable in any way for any default, failure or defect in any of the
Securities. However, should any contract deposited in connection with the sale
of additional Units fail, the Sponsor shall, on or before the next following
Distribution Day, deposit additional Securities or cause to be refunded the
attributable sales charge, plus the attributable cost of Securities to such U.S.
Treasury Portfolio Series plus accrued interest if any (at the coupon rate of
the relevant Security to the date the Sponsor is notified of the failure).
 
The Indenture authorizes the Sponsor to increase the size and the number of
Units of the U.S. Treasury Portfolio Series by the deposit of additional
Securities and the issue of a corresponding number of
 
                                       11

<PAGE>   19
 
additional Units subsequent to the Initial Date of Deposit maintaining, as close
as practicable, the original percentage relationship among the principal amounts
of Securities of specified interest rates and maturities.
 
On the Initial Date of Deposit each Unit represented the fractional undivided
interest in the U.S. Treasury Portfolio Series set forth under 'Essential
Information'. Thereafter, if any Units are redeemed by the Trustee the face
amount of Securities in the U.S. Treasury Portfolio Series will be reduced by
amounts allocable to redeemed Units, and the fractional undivided interest
represented by each Unit in the balance will be increased. However, if
additional Units are issued by the U.S. Treasury Portfolio Series (through
deposit of Securities by the Sponsor in connection with the sale of additional
Units), the aggregate value of Securities in the U.S. Treasury Portfolio Series
will be increased by amounts allocable to additional Units, and the fractional
undivided interest represented by each Unit in the balance will be decreased.
Units will remain outstanding until redeemed upon tender to the Trustee by any
Unitholder (which may include the Sponsor) or until the termination of the
Indenture.
 
KEMPER DEFINED FUNDS SERIES 5
GNMA PORTFOLIO, SERIES 1
PORTFOLIO
AS OF THE INITIAL DATE OF DEPOSIT: SEPTEMBER 9, 1993
- --------------------------------------------------------------------------------
Government National Mortgage Association, Modified Pass-Through Mortgage-Backed
                    Securities and U.S. Treasury Securities*
 
<TABLE>
<CAPTION>
                                                                                              Cost of
                                                                         Range of            Securities
  Face                                                                    Stated                of
 Amount                       Issuer                    Coupon          Maturities(1)        Trust(2)
<S>                 <C>                                 <C>             <C>                  <C>
- ---------
$ 350,000           GNMA                                6.00%            2008-2009           $ 355,908
   50,000           GNMA                                9.00             2000-2003              53,250
   25,000           GNMA                                9.50             2000-2003              26,813
   25,000           U.S. Treasury                       0.00(3)         11/15/2000              17,400
   50,000           U.S. Treasury                       0.00(3)         11/15/2001              32,669
- ---------                                                                                    ---------
$ 500,000                                                                                    $ 486,040
- ---------                                                                                    ---------
- ---------                                                                                    ---------
</TABLE>
 
SEE 'NOTES TO PORTFOLIOS.'
 
KEMPER DEFINED FUNDS SERIES 5
U.S. TREASURY PORTFOLIO, SERIES 1
PORTFOLIO
AS OF THE DATE OF DEPOSIT: SEPTEMBER 9, 1993
- --------------------------------------------------------------------------------
 
<TABLE>
<CAPTION>
                                            Cost of
   Face                                   Securities
  Amount        Coupon     Maturities     of Trust(2)
<S>             <C>        <C>            <C>
- -----------
$   200,000      4.625%     2/15/1996     $   203,750
    175,000      6.250      1/31/1997         186,704
     25,000      0.000(3)   2/15/1997          21,669
    200,000      5.125      2/28/1998         205,562
    130,000      6.375      1/15/1999         140,481
     70,000      0.000(3)   2/15/1999          54,301
    150,000      5.500      4/15/2000         156,047
     50,000      0.000(3)   2/15/2000          36,553
- -----------                               -----------
$ 1,000,000                               $ 1,005,067
- -----------                               -----------
- -----------                               -----------
</TABLE>
 
SEE 'NOTES TO PORTFOLIOS.'
 
                                       12

<PAGE>   20
 
KEMPER DEFINED FUNDS SERIES 5
U.S. TREASURY PORTFOLIO, SERIES 2
PORTFOLIO
AS OF THE DATE OF DEPOSIT: SEPTEMBER 9, 1993
- --------------------------------------------------------------------------------
 
<TABLE>
<CAPTION>
                                          Cost of
                                         Securities
  Face                                      of
 Amount       Coupon     Maturities      Trust(2)
<S>           <C>        <C>             <C>
- ---------
$  85,000      8.750%      8/15/2000     $ 103,965
   40,000      0.000(3)    8/15/2000        28,385
   85,000      7.875       8/15/2001       100,485
   40,000      0.000(3)    8/15/2001        26,662
  100,000      6.375       8/15/2002       108,406
   25,000      0.000(3)    8/15/2002        15,614
   95,000      5.750       8/15/2003        98,948
   30,000      0.000(3)    8/15/2003        17,485
- ---------                                ---------
$ 500,000                                $ 499,950
- ---------                                ---------
- ---------                                ---------
</TABLE>
 
NOTES TO PORTFOLIOS
 
(1) The principal amount of Securities listed as having the range of maturities
    shown is an aggregate of individual Securities having varying ranges of
    maturities within that shown. They are listed as one category of Securities
    with a single range of maturities because of current market conditions that
    accord no difference in price among the Securities grouped together on the
    basis of the difference in their maturity ranges. At some time in the
    future, however, the difference in maturity ranges could affect the market
    value of the individual Securities.
 
(2) All Securities are represented by contracts to purchase such Securities.
    During the initial offering period, evaluations of Securities are made on
    the basis of current offering side evaluations of the Securities. The
    aggregate offering price is greater than the aggregate bid price of the
    Securities, which is the basis on which Redemption Prices will be determined
    for purposes of redemption of Units after the initial offering period. Other
    information regarding the Securities in the Trust Funds, at the opening of
    business on the Initial Date of Deposit, is as follows:
 
<TABLE>
<CAPTION>
                                                                                       Annual
                                                                        Profit or     Interest
                                                  Cost of Securities    (Loss) to     Income to     Bid Side Value
                  Trust Fund                          to Sponsor         Sponsor        Trust       of Securities
- -----------------------------------------------   ------------------    ---------    -----------    --------------
<S>                                               <C>                   <C>          <C>            <C>
GNMA Series 1..................................       $  485,442         $    598      $27,875        $  484,293
U.S. Treasury Series 1.........................       $1,001,687         $  3,380      $46,975        $1,002,694
U.S. Treasury Series 2.........................       $  488,382         $ 11,568      $25,969        $  498,755
</TABLE>
 
(3) This Security has been purchased at a deep discount from the par value
    because there is little or no stated interest income thereon. Securities
    which pay no interest are normally described as 'zero coupon' bonds. Over
    the life of Securities purchased at a deep discount the value of such
    Securities will increase such that upon maturity the holders of such
    Securities will receive 100% of the principal amount thereof.
                            ------------------------
 
*In addition to the information as to the GNMA modified pass-through
 mortgage-backed Securities set forth under 'Portfolios,' the Trustee will
 furnish Unitholders a statement listing the name of issuer, pool number,
 interest rate, maturity date and principal amount for each such Security in the
 portfolio upon written request.
                            ------------------------
 
                                       13

<PAGE>   21
 
- --------------------------------------------------------------------------------
 
REPORT OF INDEPENDENT CERTIFIED PUBLIC ACCOUNTANTS
 
UNITHOLDERS
KEMPER DEFINED FUNDS SERIES 5 (GNMA PORTFOLIO, SERIES 1, U.S. TREASURY
PORTFOLIO, SERIES 1 AND U.S. TREASURY PORTFOLIO, SERIES 2)
 
We have audited the accompanying statements of condition, including the
portfolios, of Kemper Defined Funds Series 5 (GNMA Portfolio, Series 1, U.S.
Treasury Portfolio, Series 1 and U.S. Treasury Portfolio, Series 2) as of the
opening of business on September 9, 1993. These statements of condition are the
responsibility of the Trust Funds' Sponsor. Our responsibility is to express an
opinion on these statements of condition based on our audit.
 
We conducted our audit in accordance with generally accepted auditing standards.
Those standards require that we plan and perform the audit to obtain reasonable
assurance about whether the statements of condition are free of material
misstatement. An audit includes examining, on a test basis, evidence supporting
the amounts and disclosures in the statements of condition. Our procedures
included confirmation of the letter of credit held by the Trustee on September
9, 1993. An audit also includes assessing the accounting principles used and
significant estimates made by the Sponsor, as well as evaluating the overall
statements of condition presentation. We believe that our audit provides a
reasonable basis for our opinion.
 
In our opinion, the statements of condition referred to above present fairly, in
all material respects, the financial position of Kemper Defined Funds Series 5
(GNMA Portfolio, Series 1, U.S. Treasury Portfolio, Series 1 and U.S. Treasury
Portfolio, Series 2) at the opening of business on September 9, 1993, in
conformity with generally accepted accounting principles.
 
                                                  GRANT THORNTON
 
Chicago, Illinois
September 9, 1993
 
                                       14

<PAGE>   22
 
KEMPER DEFINED FUNDS SERIES 5,
GNMA PORTFOLIO, SERIES 1, U.S. TREASURY PORTFOLIO, SERIES 1 AND U.S. TREASURY
PORTFOLIO, SERIES 2
STATEMENTS OF CONDITION
OF THE OPENING OF BUSINESS ON SEPTEMBER 9, 1993, THE INITIAL DATE OF DEPOSIT
- --------------------------------------------------------------------------------
 
<TABLE>
<CAPTION>
                                                            GNMA
                                                          PORTFOLIO      U.S. TREASURY         U.S. TREASURY
                                                          SERIES 1     PORTFOLIO SERIES 1    PORTFOLIO SERIES 2
                                                          ---------    ------------------    ------------------
<S>                                                       <C>          <C>                   <C>
INVESTMENT IN SECURITIES
Contracts to purchase Securities(1)....................   $ 486,040        $1,005,067             $499,950
Purchased interest to date of settlement on
  Securities(1)........................................          --             7,580                2,277
                                                          ---------    ------------------    ------------------
  Total................................................   $ 486,040        $1,012,647             $502,227
                                                          ---------    ------------------    ------------------
                                                          ---------    ------------------    ------------------
INTEREST OF UNITHOLDERS
Interest of Unitholders --
  Units of fractional undivided interest
     outstanding:......................................      50,000           100,000               50,000
  Cost to investors(2).................................   $ 503,700        $1,030,700             $517,500
  Less: Gross underwriting commission(2)...............      17,660            18,053               15,273
                                                          ---------    ------------------    ------------------
Net interest to Unitholders(2).........................   $ 486,040        $1,012,647             $502,227
                                                          ---------    ------------------    ------------------
                                                          ---------    ------------------    ------------------
</TABLE>
 
- -------------------------
NOTES:
 
(1) The aggregate value of the Securities listed in each Portfolio and their
    cost to the Trust are the same. The value of the Securities is determined
    by Muller Data Corporation on the bases set forth under 'Public Offering of
    Units--Public Offering Price.' The contracts to purchase Securities are
    collateralized by an irrevocable letter of credit of $2,000,914 which has
    been deposited with the Trustee. Of this amount, $1,991,057 relates to the
    offering price of Securities to be purchased and $9,857 relates to
    purchased interest on such Securities to the expected dates of delivery.
 
(2) The aggregate public offering price includes a sales charge for each Trust
    as set forth under 'Essential Information,' assuming all single
    transactions involve less than 10,000 Units. For single transactions
    involving 10,000 or more Units, the sales charge is reduced (see 'Public
    Offering of Units--Public Offering Price') resulting in an equal reduction
    in both the Cost to investors and the Gross underwriting commission while
    the Net interest to Unitholders remains unchanged.
 
                                       15

<PAGE>   23
 
ESTIMATED CASH FLOWS TO UNITHOLDERS
 
The table below sets forth the per 100 Units estimated distributions of interest
and principal to Unitholders. The table assumes a constant prepayment rate on
the Initial Date of Deposit. The table also assumes no changes in the current
interest rates, no exchanges, redemptions, or sales of the underlying securities
prior to their maturity or expected retirement date and assumes that the
prepayment rate will not change. To the extent the foregoing assumptions change,
actual distributions will vary.
 
GNMA PORTFOLIO, SERIES 1
 
<TABLE>
<CAPTION>
                            ESTIMATED       ESTIMATED
                             INTEREST       PRINCIPAL
          DATE             DISTRIBUTION    DISTRIBUTION
- -------------------------  ------------    ------------
<S>                        <C>             <C>
October 1993                  $ 2.24         $      0
November 1993                 $ 4.47         $   5.92
December 1993                 $ 4.45         $   5.89
January 1994                  $ 4.42         $   5.86
February 1994                 $ 4.38         $   5.84
March 1994                    $ 4.35         $   5.81
April 1994                    $ 4.32         $   5.78
May 1994                      $ 4.28         $   5.76
June 1994                     $ 4.25         $   5.73
July 1994                     $ 4.21         $   5.71
August 1994                   $ 4.18         $   5.68
September 1994                $ 4.15         $   5.66
October 1994                  $ 4.11         $   5.63
November 1994                 $ 4.08         $   5.61
December 1994                 $ 4.05         $   5.58
January 1995                  $ 4.02         $   5.56
February 1995                 $ 3.98         $   5.54
March 1995                    $ 3.95         $   5.51
April 1995                    $ 3.92         $   5.49
May 1995                      $ 3.89         $   5.47
June 1995                     $ 3.86         $   5.45
July 1995                     $ 3.82         $   5.43
August 1995                   $ 3.79         $   5.41
September 1995                $ 3.76         $   5.39
October 1995                  $ 3.73         $   5.37
November 1995                 $ 3.70         $   5.35
December 1995                 $ 3.67         $   5.33
January 1996                  $ 3.64         $   5.31
February 1996                 $ 3.61         $   5.29
March 1996                    $ 3.58         $   5.27
April 1996                    $ 3.55         $   5.25
May 1996                      $ 3.52         $   5.23
June 1996                     $ 3.49         $   5.21
July 1996                     $ 3.46         $   5.20
August 1996                   $ 3.43         $   5.18
September 1996                $ 3.40         $   5.16
October 1996                  $ 3.37         $   5.15
November 1996                 $ 3.34         $   5.13
December 1996                 $ 3.31         $   5.11
January 1997                  $ 3.28         $   5.10
February 1997                 $ 3.25         $   5.08
<CAPTION>
                            ESTIMATED       ESTIMATED
                             INTEREST       PRINCIPAL
          DATE             DISTRIBUTION    DISTRIBUTION
- -------------------------  ------------    ------------
<S>                        <C>             <C>
March 1997                    $ 3.23         $   5.07
April 1997                    $ 3.20         $   5.05
May 1997                      $ 3.17         $   5.04
June 1997                     $ 3.14         $   5.02
July 1997                     $ 3.11         $   5.01
August 1997                   $ 3.08         $   4.99
September 1997                $ 3.06         $   4.98
October 1997                  $ 3.03         $   4.97
November 1997                 $ 3.00         $   4.95
December 1997                 $ 2.97         $   4.94
January 1998                  $ 2.95         $   4.93
February 1998                 $ 2.92         $   4.91
March 1998                    $ 2.89         $   4.90
April 1998                    $ 2.87         $   4.89
May 1998                      $ 2.84         $   4.88
June 1998                     $ 2.81         $   4.87
July 1998                     $ 2.78         $   4.85
August 1998                   $ 2.76         $   4.84
September 1998                $ 2.73         $   4.83
October 1998                  $ 2.70         $   4.82
November 1998                 $ 2.68         $   4.81
December 1998                 $ 2.65         $   4.80
January 1999                  $ 2.63         $   4.79
February 1999                 $ 2.60         $   4.78
March 1999                    $ 2.57         $   4.77
April 1999                    $ 2.55         $   4.76
May 1999                      $ 2.52         $   4.75
June 1999                     $ 2.50         $   4.74
July 1999                     $ 2.47         $   4.73
August 1999                   $ 2.44         $   4.73
September 1999                $ 2.42         $   4.72
October 1999                  $ 2.39         $   4.71
November 1999                 $ 2.37         $   4.70
December 1999                 $ 2.34         $   4.69
January 2000                  $ 2.32         $   4.68
February 2000                 $ 2.29         $   4.68
March 2000                    $ 2.27         $   4.67
April 2000                    $ 2.24         $   4.66
May 2000                      $ 2.22         $   4.66
June 2000                     $ 2.19         $   4.65
July 2000                     $ 2.17         $   4.64
</TABLE>
 
                                       16

<PAGE>   24
 
<TABLE>
<CAPTION>
                            ESTIMATED       ESTIMATED
                             INTEREST       PRINCIPAL
          DATE             DISTRIBUTION    DISTRIBUTION
- -------------------------  ------------    ------------
<S>                        <C>             <C>
August 2000                   $ 2.14         $   4.64
September 2000                $ 2.12         $   4.63
October 2000                  $ 2.09         $   4.62
November 2000                 $ 2.07         $   4.62
December 2000                 $ 2.04         $  54.61
January 2001                  $ 2.02         $   4.61
February 2001                 $ 2.00         $   4.60
March 2001                    $ 1.97         $   4.60
April 2001                    $ 1.95         $   4.59
May 2001                      $ 1.92         $   4.59
June 2001                     $ 1.90         $   4.58
July 2001                     $ 1.87         $   4.58
August 2001                   $ 1.85         $   4.57
September 2001                $ 1.83         $   4.57
October 2001                  $ 1.80         $   4.56
November 2001                 $ 1.78         $   4.56
December 2001                 $ 1.75         $ 104.56
January 2002                  $ 1.73         $   4.55
February 2002                 $ 1.71         $   4.55
March 2002                    $ 1.68         $   4.55
April 2002                    $ 1.66         $   4.54
May 2002                      $ 1.64         $   4.54
June 2002                     $ 1.61         $   4.54
July 2002                     $ 1.59         $   4.53
August 2002                   $ 1.56         $   4.53
September 2002                $ 1.54         $   4.53
October 2002                  $ 1.52         $   4.53
November 2002                 $ 1.49         $   4.52
December 2002                 $ 1.47         $   4.52
January 2003                  $ 1.45         $   4.52
February 2003                 $ 1.42         $   4.52
March 2003                    $ 1.40         $   4.52
April 2003                    $ 1.38         $   4.52
May 2003                      $ 1.35         $   4.51
June 2003                     $ 1.33         $   4.51
July 2003                     $ 1.31         $   4.51
August 2003                   $ 1.28         $   4.51
September 2003                $ 1.26         $   4.51
October 2003                  $ 1.24         $   4.52
November 2003                 $ 1.22         $   4.03
December 2003                 $ 1.20         $   4.04
January 2004                  $ 1.18         $   4.05
February 2004                 $ 1.16         $   4.05
March 2004                    $ 1.14         $   4.06
April 2004                    $ 1.12         $   4.07
May 2004                      $ 1.10         $   4.07
June 2004                     $ 1.08         $   4.08
July 2004                     $ 1.06         $   4.09
August 2004                   $ 1.04         $   4.09
September 2004                $ 1.02         $   4.10
<CAPTION>
                            ESTIMATED       ESTIMATED
                             INTEREST       PRINCIPAL
          DATE             DISTRIBUTION    DISTRIBUTION
- -------------------------  ------------    ------------
<S>                        <C>             <C>
October 2004                  $ 1.00         $   4.11
November 2004                 $ 0.98         $   4.11
December 2004                 $ 0.96         $   4.12
January 2005                  $ 0.94         $   4.13
February 2005                 $ 0.92         $   4.14
March 2005                    $ 0.90         $   4.14
April 2005                    $ 0.88         $   4.15
May 2005                      $ 0.86         $   4.16
June 2005                     $ 0.84         $   4.17
July 2005                     $ 0.82         $   4.17
August 2005                   $ 0.80         $   4.18
September 2005                $ 0.78         $   4.19
October 2005                  $ 0.76         $   4.20
November 2005                 $ 0.74         $   4.20
December 2005                 $ 0.72         $   4.21
January 2006                  $ 0.70         $   4.22
February 2006                 $ 0.68         $   4.23
March 2006                    $ 0.66         $   4.23
April 2006                    $ 0.64         $   4.24
May 2006                      $ 0.62         $   4.25
June 2006                     $ 0.59         $   4.26
July 2006                     $ 0.57         $   4.27
August 2006                   $ 0.55         $   4.27
September 2006                $ 0.53         $   4.28
October 2006                  $ 0.51         $   4.29
November 2006                 $ 0.49         $   4.30
December 2006                 $ 0.47         $   4.31
January 2007                  $ 0.45         $   4.31
February 2007                 $ 0.43         $   4.32
March 2007                    $ 0.41         $   4.33
April 2007                    $ 0.39         $   4.34
May 2007                      $ 0.36         $   4.35
June 2007                     $ 0.34         $   4.36
July 2007                     $ 0.32         $   4.36
August 2007                   $ 0.30         $   4.37
September 2007                $ 0.28         $   4.38
October 2007                  $ 0.26         $   4.39
November 2007                 $ 0.24         $   4.40
December 2007                 $ 0.22         $   4.41
January 2008                  $ 0.19         $   4.42
February 2008                 $ 0.17         $   4.42
March 2008                    $ 0.15         $   4.43
April 2008                    $ 0.13         $   4.44
May 2008                      $ 0.11         $   4.45
June 2008                     $ 0.09         $   4.46
July 2008                     $ 0.07         $   4.47
August 2008                   $ 0.04         $   4.48
September 2008                $ 0.02         $   4.49
October 2008                  $ 0.02         $   4.49
</TABLE>
 
                                       17

<PAGE>   25
 
The tables below set forth the per 100 Units estimated distributions of interest
and principal to Unitholders. The tables assume no changes in Trust expenses, no
redemptions or sales of the underlying U.S. Treasury Obligations prior to
maturity and the receipt of all principal due upon maturity. To the extent the
foregoing assumptions change actual distributions will vary.
 
U.S. TREASURY PORTFOLIO, SERIES 1
 
<TABLE>
<CAPTION>
                                                   ESTIMATED       ESTIMATED          ESTIMATED          ESTIMATED
                                                    INTEREST       PRINCIPAL      PURCHASED INTEREST       TOTAL
                     DATES                        DISTRIBUTION    DISTRIBUTION          REBATE          DISTRIBUTION
- -----------------------------------------------   ------------    ------------    ------------------    ------------
<S>                                               <C>             <C>             <C>                   <C>
October 15, 1993                                     $ 1.91                                               $   1.91
November 15, 1993 to February 15, 1996               $ 3.82                                               $   3.82
March 15, 1996                                       $ 3.43         $ 200.00            $ 0.81            $ 204.24
April 15, 1996 to January 15, 1997                   $ 3.07                                               $   3.07
February 15, 1997                                    $ 2.61         $ 175.00            $ 1.41            $ 179.02
March 15, 1997                                       $ 2.17         $  25.00                              $  27.17
April 15, 1997 to February 15, 1998                  $ 2.17                                               $   2.17
March 15, 1998                                       $ 1.74         $ 200.00            $ 0.45            $ 202.19
April 15, 1998 to January 15, 1999                   $ 1.33                                               $   1.33
February 15, 1999                                    $ 0.99         $ 130.00            $ 1.43            $ 132.42
March 15, 1999                                       $ 0.65         $  70.00                              $  70.65
April 15, 1999 to February 15, 2000                  $ 0.66                                               $   0.66
March 15, 2000                                       $ 0.66         $  50.00                              $  50.66
April 15, 2000                                       $ 0.66                                               $   0.66
May 15, 2000                                         $ 0.32         $ 150.00            $ 3.48            $ 153.80
</TABLE>
 
U.S. TREASURY PORTFOLIO, SERIES 2
 
<TABLE>
<CAPTION>
                                                   ESTIMATED       ESTIMATED          ESTIMATED          ESTIMATED
                                                    INTEREST       PRINCIPAL      PURCHASED INTEREST       TOTAL
                     DATES                        DISTRIBUTION    DISTRIBUTION          REBATE          DISTRIBUTION
- -----------------------------------------------   ------------    ------------    ------------------    ------------
<S>                                               <C>             <C>             <C>                   <C>
October 15, 1993                                     $ 2.10                                               $   2.10
November 15, 1993 to August 15, 2000                 $ 4.21                                               $   4.21
September 15, 2000                                   $ 3.59         $ 250.00            $ 1.30            $ 254.89
October 15, 2000 to August 15, 2001                  $ 3.00                                               $   3.00
September 15, 2001                                   $ 2.44         $ 250.00            $ 1.17            $ 253.61
October 15, 2001 to August 15, 2002                  $ 1.90                                               $   1.90
September 15, 2002                                   $ 1.37         $ 250.00            $ 1.12            $ 252.49
October 15, 2002 to August 15, 2003                  $ 0.87                                               $   0.87
September 15, 2003                                   $ 0.41         $ 250.00            $ 0.96            $ 251.37
</TABLE>
 
                                       18
<PAGE>   26

RATING OF UNITS
 
Standard & Poor's Corporation ('Standard & Poor's') has rated the Units of each
Series of the Trust 'AAA.' This is the highest rating assigned by Standard &
Poor's. Standard & Poor's has been compensated by the Sponsor for its services
in rating Units of the Trust Funds.
 
A Standard & Poor's Corporation's rating (as described by Standard & Poor's) on
the units of an investment trust (hereinafter referred to collectively as
'units' or 'trust') is a current assessment of creditworthiness with respect to
the investments held by such trust. This assessment takes into consideration the
financial capacity of the issuers and of any guarantors, insurers, lessees, or
mortgagors with respect to such investments. The assessment, however, does not
take into account the extent to which trust expenses or portfolio asset sales
for less than the trust's purchase price will reduce payment to the Unitholder
of the interest and principal required to be paid on the portfolio assets. In
addition, the rating is not a recommendation to purchase, sell, or hold units,
inasmuch as the rating does not comment as to market price of the units or
suitability for a particular investor.
 
Trusts rated 'AAA' are composed exclusively of assets that are rated 'AAA' by
Standard & Poor's or have, in the opinion of Standard & Poor's, credit
characteristics comparable to assets rated 'AAA,' or certain short-term
investments. Standard & Poor's defines its 'AAA' rating for such assets as the
highest rating assigned by Standard & Poor's to a debt obligation. Capacity to
pay interest and repay principal is very strong.
 
PORTFOLIO SELECTION
 
In selecting Ginnie Maes and U.S. Treasury Obligations for deposit in the
appropriate Trust Funds, the following factors, among others, were considered by
the Sponsor: (i) the types of such obligations available; (ii) the prices and
yields of such obligations relative to other comparable obligations, including
the extent to which such obligations are traded at a premium or at a discount
from par; and (iii) the maturities of such obligations.
 
Each Series of the Trust consists of such of the unamortized principal amount of
the Portfolio Obligations listed under the appropriate Trust Fund's 'Portfolio'
(or contracts to purchase such obligations) as may continue to be held from time
to time in such Series of the Trust and any additional obligations acquired and
held by such Series of the Trust pursuant to the provisions of the Indenture
(including provisions with respect to deposits of Portfolio Obligations in
connection with the issuance of additional Units) together with accrued and
undistributed interest thereon and undistributed cash representing payments and
prepayments of principal and proceeds realized from the disposition of Portfolio
Obligations. Neither the Sponsor nor the Trustee shall be liable in any way for
any default, failure or defect in any of the Portfolio Obligations. However,
should any contract deposited hereunder (or to be deposited in connection with
the issuance of additional Units), fail, the Sponsor shall, on or before the
next following Distribution Date, unless substantially all of the moneys held in
such Series of the Trust to cover such purchase are reinvested in substitute
Portfolio Obligations in accordance with the Indenture, cause to be refunded to
the Unitholders of that Series the attributable sales charge, plus the
attributable cost of the Portfolio Obligations to that Series of the Trust, plus
accrued interest, if any, at the coupon rate of the relevant Portfolio
Obligations to the date the Sponsor is notified of the failure.
 
Each Series of the Trust may contain 'zero coupon' U.S. Treasury Obligations.
See footnote (6) in 'Notes to Portfolios.' Zero coupon obligations are purchased
at a deep discount because the buyer receives only the right to receive a final
payment at the maturity of the obligations and does not receive any periodic
interest payments. The effect of owning deep discount obligations which do not
make current interest payments (such as the zero coupon obligations) is that a
fixed yield is earned not only on the original
 
                                      A-1

<PAGE>   27
investment but also, in effect, on all discount earned during the life of such
income on such obligation at a rate as high as the implicit yield on the
discount obligation, but at the same time eliminates the holder's ability to
reinvest at higher rates in the future. For this reason, zero coupon obligations
are subject to substantially greater price fluctuations during periods of
changing market interest rates than are securities of comparable quality which
pay interest.
 
Because regular payments of principal are to be received and certain of the
Securities from time to time may be redeemed or will mature in accordance with
their terms or may be sold under certain circumstances described herein, the
GNMA Portfolio Series of the Trust referred to herein are not expected to retain
their present size and composition.
 
THE UNITS
 
On the Initial Date of Deposit, each Unit represented the fractional undivided
interest in the appropriate Series of the Trust set forth for such Series under
'Essential Information' above in the ratio of one Unit for each $10.00 principal
amount of Portfolio Obligations in the Series. Thereafter, if any Units are
redeemed by the Trustee, the principal amount of Portfolio Obligations in such
Series will be reduced by amounts allocable to redeemed Units, and the
fractional undivided interest represented by each Unit in the balance will be
increased. However, if additional Units are issued by a Series of the Trust (in
connection with the deposit by the Sponsor of additional Portfolio Obligations),
the aggregate value of Portfolio Obligations in such Series of the Trust will be
increased by amounts allocable to additional Units, and the fractional undivided
interest represented by each Unit in the balance will be decreased. Units will
remain outstanding until redeemed upon tender to the Trustee by any Unitholder
(which may include the Sponsor) or until the termination of the Series. See
'Redemption' and 'Administration of the Trust Funds--Termination.'
 
ESTIMATED CURRENT RETURN AND ESTIMATED LONG-TERM RETURN
 
As of the opening of business on the Initial Date of Deposit, the Estimated
Current Return and the Estimated Long-Term Return for each Series were as set
forth in 'Essential Information' for each Trust. Estimated Current Return is
calculated by dividing the estimated net annual interest rate per Unit by the
Public Offering Price. The estimated net annual interest rate per Unit will vary
with changes in fees and expenses of the Trustee, the Sponsor and the Evaluator
and with the principal prepayment, redemption, maturity, exchange or sale of
Securities while the Public Offering Price will vary with changes in the
offering price of the underlying Securities and with changes in Purchased
Interest and Daily Accrued Interest; therefore, there is no assurance that the
present Estimated Current Return will be realized in the future. The Estimated
Long-Term Return is calculated using a formula which (1) takes into
consideration, and determines and factors in the relative weightings of, the
market values, yields (which takes into account the amortization of premiums and
the accretion of discounts) and, in the case of GNMA Portfolio Series, the
estimated average life of all the Securities in such Series or, in the case of
U.S. Treasury Portfolio Series, the estimated retirements of all of the
Securities in such Series and (2) takes into account the expenses and sales
charge associated with each Trust Unit. Since the market values and the
estimated average lives or estimated retirements, as the case may be, of the
Securities and the expenses of the Trust will change, there is no assurance that
the present Estimated Long-Term Return will be realized in the future. The
Estimated Current Return and Estimated Long-Term Return are expected to differ
because the calculation of the Estimated Long-Term Return reflects the estimated
dates and amounts of principal returned while the Estimated Current Return
calculations include only net annual interest rates and Public Offering Price.
 
Payments received in respect of the mortgages underlying the Ginnie Maes in each
series of the GNMA Portfolio will consist of a portion representing interest and
a portion representing principal. Although the aggregate monthly payment made by
the obligor on each mortgage remains constant (aside from optional prepayments
of principal), in the early years most of each such payment will represent
interest, while in
                                      A-2

<PAGE>   28
later years, the proportion representing interest will decline and the
proportion representing principal will increase. However, by reason of optional
prepayments, principal payments in the earlier years on the mortgages underlying
the Ginnie Maes may be substantially in excess of those required by the
amortization schedules of such mortgages. Therefore, principal payments in later
years may be substantially less since the aggregate unpaid principal balances of
such underlying mortgages may have been greatly reduced. To the extent that the
underlying mortgages bearing higher interest rates in the Trust Funds are
prepaid faster than the other underlying mortgages, the net annual interest rate
per Unit and the Estimated Current Return on the Units of such Series can be
expected to decline. Monthly payments to the Unitholders will reflect all of the
foregoing factors.
 
PUBLIC OFFERING OF UNITS
 
PUBLIC OFFERING PRICE.  Units of each Trust Fund are offered at the Public
Offering Price thereof. During the initial offering period, the Public Offering
Price per Unit is equal to the aggregate of the offering side evaluations of the
Securities in a Trust Fund (as determined, pursuant to the terms of a contract
with the Evaluator, by Muller Data Corporation, a non-affiliated firm regularly
engaged in the business of evaluating, quoting or appraising comparable
securities), plus or minus a pro rata share of (a) cash, if any, in the
Principal Account held or owed by a Trust Fund, (b) Purchased Interest and (c)
Daily Accrued Interest plus the applicable sales charge referred to in the table
below divided by the number of outstanding Units of such Trust Fund. The Public
Offering Price for secondary market transactions, on the other hand, is based on
the bid side evaluations of the Securities in a Trust Fund plus or minus (a)
cash, if any, in the Principal Account held or owned by the Trust Fund, (b)
Purchased Interest and (c) Daily Accrued Interest plus a sales charge based upon
the dollar weighted average maturity of the Trust Fund. The sales charges for
primary sales for each Series of the Trust and for secondary sales of the GNMA
Portfolio Series are set forth in 'Essential Information.' The sales charges for
secondary sales for the U.S. Treasury Portfolios are set forth below.
 
The sales charge per Unit for GNMA Portfolio Series will be reduced pursuant to
the following graduated scale:
 
<TABLE>
<CAPTION>
                                                       MIDGET TRUST               LONG-TERM TRUST
                                                 -------------------------   -------------------------
                                                 PERCENT OF     PERCENT OF   PERCENT OF     PERCENT OF
                                                  OFFERING      NET AMOUNT    OFFERING      NET AMOUNT
                 TICKET SIZE*                      PRICE         INVESTED      PRICE         INVESTED
- -----------------------------------------------  ----------     ----------   ----------     ----------
<S>                                              <C>            <C>          <C>            <C>
Less than $100,000.............................     3.50           3.627        3.95           4.112
$100,000 to $249,999...........................     3.25           3.359        3.70           3.842
$250,000 to $499,999...........................     2.85           2.934        3.35           3.466
$500,000 to $999,999...........................     2.60           2.669        3.10           3.199
$1,000,000 or more.............................  Negotiated                  Negotiated
</TABLE>
 
The sales charge per Unit for U.S. Treasury Portfolio Series will be reduced
pursuant to the following graduated scale:
 
<TABLE>
<CAPTION>
                                                          WEIGHTED AVERAGE YEARS TO MATURITY
                                                 -----------------------------------------------------
                                                         0 TO 4.99                   5 TO 9.99
                                                 -------------------------   -------------------------
                                                 PERCENT OF     PERCENT OF   PERCENT OF     PERCENT OF
                                                  OFFERING      NET AMOUNT    OFFERING      NET AMOUNT
                 TICKET SIZE*                      PRICE         INVESTED      PRICE         INVESTED
- -----------------------------------------------  ----------     ----------   ----------     ----------
<S>                                              <C>            <C>          <C>            <C>
Less than $500,000.............................     1.75           1.781        2.95           3.040
$500,000 to $999,999...........................     1.50           1.523        2.50           2.564
$1,000,000 to 1,499,999**......................     1.25           1.266        2.00           2.041
</TABLE>
 
- ------------
 
*The breakpoint sales charges are also applied on a Unit basis utilizing a
breakpoint equivalent in the above tables of $10 per Unit and will be applied on
whichever basis is more favorable to the investor.
 
**For any transactions in excess of $1,499,999 the Sponsor intends to negotiate
the applicable sales charge and such charge will be disclosed to any such
purchaser.
 
                                      A-3

<PAGE>   29
 
In connection with secondary market transactions of the U.S. Treasury
Portfolios, the sales charge per Unit will be reduced as set forth below:
 
<TABLE>
<CAPTION>
                                                                  SECONDARY
                                         -----------------------------------------------------------
                                                 DOLLAR WEIGHTED AVERAGE YEARS TO MATURITY*
                                         -----------------------------------------------------------
                                         0-1.99       2-2.99       3-4.99       5-6.99       7-9.99
        DOLLAR AMOUNT OF TRADE           YEARS        YEARS        YEARS        YEARS         YEARS
- ---------------------------------------  ----         ----         ----         ----         -------
                                               SALES CHARGE (PERCENT OF PUBLIC OFFERING PRICE)
<S>                                      <C>          <C>          <C>          <C>          <C>
Less than $500,000.....................  1.25%        1.50%        1.75%        2.25%           3.00%
$500,000-$999,999......................  1.00         1.25         1.50         1.75            2.50
$1,000,000-$1,499,999..................  1.00         1.00         1.25         1.50            2.00
</TABLE>
 
- ------------
 
*For any transaction in excess of $1,499,999 the Sponsor intends to negotiate
the applicable sales charge and such charges will be disclosed to any such
purchaser.
 
The reduced sales charges as shown on the tables above will apply to all
purchases of Units on any one day by the same purchaser from the same firm, and
for this purpose, purchases of Units of these Series will be aggregated with
concurrent purchases of Units of any other unit investment trust that may be
offered by the Sponsor. Additionally, Units purchased in the name of a spouse or
child (under 21) of such purchaser will be deemed to be additional purchases by
such purchaser. The reduced sales charge will also be applicable to a trust or
other fiduciary purchasing for a single trust estate or single fiduciary
account. The Sponsor will also allow purchasers who commit to purchase $1
million or more of the Series' units during a 12 month period to do so at the
applicable reduced sales charge for such series pursuant to a letter of intent,
subject to certain restrictions.
 
The Sponsor intends to permit officers, directors and employees of the Sponsor
and Evaluator to purchase Units of each Series without a sales charge, although
a transaction processing fee may be imposed on such trades.
 
The Sponsor reserves the right to reject, in whole or in part, any order for the
purchase of Units and the right to change the amount of the sales charge from
time to time.
 
The Public Offering Price includes accrued interest. Accrued interest consists
of two elements. The first element arises as a result of accrued interest which
is the accumulation of unpaid interest on a security from the later of the last
day on which interest thereon was paid or the date of original issuance of the
security. Interest on the Securities in the Trust Fund is paid monthly or
semi-annually to the Trust. The aggregate amount of such accrued interest on the
Securities in the Trust to the First Settlement Date of the Trust is referred to
herein as 'Purchased Interest.' Included in the Public Offering Price of the
Trust Units is the Purchased Interest. The second element of accrued interest
arises because the estimated net interest on the Units in the Trust Fund is
accounted for daily on an accrual basis (herein referred to as 'Daily Accrued
Interest'). Because of this, the Units always have an amount of interest earned
but not yet paid or reserved for payment. For this reason, the Public Offering
Price of Units will include the proportionate share of Daily Accrued Interest to
the date of settlement. If a Unitholder sells or redeems all or a portion of his
Units or if the Securities are sold or otherwise removed or if the Trust Fund is
liquidated, he will receive at that time his proportionate share of the
Purchased Interest and Daily Accrued Interest computed to the settlement date in
the case of sale or liquidation and to the date of tender in the case of
redemption in the Trust Fund.
 
The Public Offering Price of any Series on the date of this Prospectus or on any
subsequent date will vary from the Public Offering Price set forth under
'Essential Information' for such Series in accordance with fluctuations in the
valuation of the underlying Portfolio Obligations in such Series of the Trust
and the addition or deletion of Purchased Interest and Daily Accrued Interest.
 
During the initial offering period and thereafter, the aggregate bid or offering
prices of the Securities in each Series of the Trust, as is appropriate, shall
be determined for the Trust by the Evaluator, in the following
 
                                      A-4

<PAGE>   30
 
manner: (a) on the basis of current bid or offering prices for the Portfolio
Obligations, (b) if bid or offering prices are not available for the Portfolio
Obligations, on the basis of current bid or offering prices for comparable
securities, (c) by determining the value of the Portfolio Obligations on the bid
or offering side of the market by appraisal, or (d) by any combination of the
above. The Evaluator may obtain current price information as to the Portfolio
Obligations from investment dealers or brokers. Such evaluations and
computations will be made as of the close of business on each business day
commencing with the Initial Date of Deposit of the Portfolio Obligations and
will be effective for all sales of Units made during the preceding 24-hour
period. Evaluations, for purposes of redemptions by the Trustee, will be made
each business day as of the Evaluation Time stated under 'Essential
Information,' for such Series effective for all redemptions made subsequent to
the last preceding determination.
 
In connection with the Ginnie Maes deposited in the GNMA Portfolio Series of the
Trust, there is a period of time beginning on the first day of each month,
during which the total amount of payments (including prepayments, if any) of
principal for the preceding month on the various mortgages underlying each of
the Securities in the Trust Fund will not yet have been reported by the issuer
to GNMA and made generally available to the public. During this period, the
precise principal amount of the underlying mortgages remaining outstanding for
each Security in the Trust Fund, and therefore the precise principal amount of
such Security, will not be known, although the principal amount outstanding for
the preceding month will be known. Therefore, the exact amount of principal to
be acquired by the Trustee as a holder of such Securities which may be
distributed to Unitholders of such Series with the next monthly distribution
will not be known. The Sponsor does not expect that the amounts of such
prepayments and the differences in such principal amounts from month to month
will be material in relation to the GNMA Portfolio Series due to the number of
mortgages underlying each Security and the number of such Securities in the GNMA
Portfolio Series of the Trust. However, there can be no assurance that they will
not be material. For purposes of the determination by the Evaluator of the
offering prices and bid prices of the Securities in each GNMA Portfolio Series
and for purposes of calculations of accrued interest on the Units, during the
period in each month prior to the time when the precise amounts of principal of
the Ginnie Maes for the month become publicly available, the Evaluator will base
its evaluations and calculations, which are the basis for calculations of the
Public Offering Price, the Sponsor's Repurchase Price in the secondary market
and the Redemption Price per Unit of each GNMA Portfolio Series, upon the
principal amount of such Series outstanding for the preceding month. The Sponsor
expects that the differences in such principal amounts from month to month will
not be material to each GNMA Portfolio Series of the Trust. Nevertheless, the
Sponsor will adopt procedures as to pricing and evaluation for the Units of each
GNMA Portfolio Series, with such modifications, if any, deemed necessary by the
Sponsor for the protection of Unitholders, designed to minimize the impact of
such differences upon the calculation of the Public Offering Price per Unit, the
Sponsor's Repurchase Price per Unit in the secondary market and the Redemption
Price per Unit of such Series.
 
On the business day indicated under 'Essential Information' the Public Offering
Price per Unit and the Sponsor's Initial Repurchase Price per Unit (based on the
offering side evaluation of the Portfolio Obligations) of the Trust Fund
exceeded the Redemption Price per Unit (based upon the bid side evaluation of
the Portfolio Obligations).
 
INITIAL PUBLIC DISTRIBUTION.  During the initial offering period (i) for Units
issued on the Initial Date of Deposit and (ii) for additional Units issued after
such date in respect of additional Ginnie Maes or U.S. Treasury Obligations
deposited by the Sponsor, Units of each Series will be distributed to the public
at the Public Offering Price, which is based on the offering prices of the
Portfolio Obligations in such Series, plus (a) cash, if any, in the Principal
Account held or owned by a Trust Fund, (b) Purchased Interest and (c) Daily
Accrued Interest, by means of this Prospectus through various dealers and
through others. The
 
                                      A-5

<PAGE>   31
 
initial offering period is 30 days. The initial offering period may be extended
by the Sponsor for up to five additional successive 30 day periods (i.e., until
180 days after the Initial Date of Deposit) for each Series. Units of a Series
reacquired by the Sponsor during the initial offering period may be resold at
the then current Public Offering Price. Upon the termination of the initial
offering period of a Series, unsold Units or Units acquired by the Sponsor in
the secondary market referred to below may be offered to the public by this
Prospectus at the then current Public Offering Price of such Series, which is
based on the bid prices of the Portfolio Obligations, plus Purchased Interest
and Daily Accrued Interest.
 
The Sponsor intends to qualify Units for sale (in any state in which
qualification is deemed necessary by the Sponsor) through dealers who are
members of the National Association of Securities Dealers, Inc. and through
others. The Sponsor does not intend to qualify Units of any Series for sale in
any foreign country and this Prospectus does not constitute an offer to sell
Units in any country where Units cannot lawfully be sold without registration.
 
SECONDARY MARKET.  After the initial offering period, while not obligated to do
so, the Sponsor intends, subject to change at any time, to maintain a market for
Units of each Series of the Trust offered hereby and to continuously offer to
purchase said Units at prices based on the aggregate bid prices of the
underlying Portfolio Obligations, together with Purchased Interest and Daily
Accrued Interest to the expected date of settlement. To the extent that a
secondary market is maintained during the initial offering period, the prices at
which Units of a Series of the Trust will be repurchased will be based upon the
aggregate offering side evaluation of the Portfolio Obligations in such Series.
The aggregate bid prices of the underlying Portfolio Obligations in each Series
of the Trust, upon which the Sponsor's Repurchase Price and the Redemption Price
are based, are expected to be less than the related aggregate offering prices
(which is the evaluation method used during the initial public offering period).
Accordingly, Unitholders who wish to dispose of their Units should inquire of
their bank or broker as to current market prices in order to determine whether
there is in existence any price in excess of the Redemption Price and, if so,
the amount thereof.
 
The offering price of any Units acquired by the Sponsor will be in accord with
that described in the currently effective Prospectus describing such Units. Any
profit or loss resulting from the resale of such Units, after allowance of a
discount to the dealer or other entity which makes the sale, will belong to the
Sponsor. The Sponsor may suspend or discontinue purchases of Units of any Series
of the Trust at prices based on the bid prices of the Portfolio Obligations in
such Series if the supply of Units exceeds demand, or for other business
reasons.
 
PROFITS OF SPONSOR.  Sales of Units may be made to or through dealers or through
others at prices which represent discounts from the Public Offering Price as set
forth below. Discounted rates for each GNMA Portfolio Series are as follows:
 
<TABLE>
<CAPTION>
                                                                MIDGET TRUST
                                       --------------------------------------------------------------
                                                                                           SECONDARY
                                                        PRIMARY MARKET                      MARKET
                                       -------------------------------------------------   ----------
                                                             VOLUME DISCOUNTS**
                                                    ------------------------------------
                                                    FIRM SALES   FIRM SALES   FIRM SALES
                                                     OR SALE      OR SALE      OR SALE
                                        REGULAR     ARRANGEMENTS ARRANGEMENTS ARRANGEMENTS 
                                       CONCESSION   ($250,000    ($500,000    ($1,000,000    
                                       OR AGENCY        TO           TO           OR         
         DOLLAR AMOUNT OF TRADE*       COMMISSION   $499,999)    $999,999)      MORE)      ALL SALES
    ---------------------------------  ----------   ----------   ----------   ----------   ----------
    <S>                                <C>          <C>          <C>          <C>          <C>
    $0 to $99,999....................     2.10%        2.15%        2.20%        2.25%        2.10%
    $100,000 to $249,999.............     2.00         2.05         2.10         2.20         2.10
    $250,000 to $499,999.............     1.75         1.80         1.80         1.85         1.80
    $500,000 to $999,999.............     1.50         1.55         1.55         1.60         1.55
    $1,000,000 or more...............  Negotiated   Negotiated   Negotiated   Negotiated   Negotiated
</TABLE>
 
                                      A-6

<PAGE>   32
 
<TABLE>
<CAPTION>
                                                              LONG-TERM TRUST
                                       --------------------------------------------------------------
                                                                                            SECONDARY   
                                                              PRIMARY MARKET                 MARKET
                                       -------------------------------------------------   ----------
                                                             VOLUME DISCOUNTS**
                                                    ------------------------------------
                                                    FIRM SALES   FIRM SALES   FIRM SALES
                                                     OR SALE      OR SALE      OR SALE
                                        REGULAR     ARRANGEMENTS ARRANGEMENTS ARRANGEMENTS 
                                       CONCESSION   ($250,000    ($500,000    ($1,000,000  
                                       OR AGENCY        TO           TO          OR           
         DOLLAR AMOUNT OF TRADE*       COMMISSION   $499,999)    $999,999)      MORE)      ALL SALES
    ---------------------------------  ----------   ----------   ----------   ----------   ----------
    <S>                                <C>          <C>          <C>          <C>          <C>
    $0 to $99,999....................    2.50%        2.60%        2.65%        2.70%        2.60%
    $100,000 to $249,999.............     2.50         2.55         2.60         2.65         2.60
    $250,000 to $499,999.............     2.25         2.30         2.30         2.35         2.30
    $500,000 to $999,999.............     2.00         2.05         2.05         2.10         2.05
    $1,000,000 or more...............  Negotiated   Negotiated   Negotiated   Negotiated   Negotiated
</TABLE>
 
- ------------
 
 *The breakpoint discount are also applied on a Unit basis utilizing a
  breakpoint equivalent in the above table of $1,000 per 100 Units.
 
**Volume discounts will be given to firms who reach cumulative firm sales or
  sales arrangement levels of at least $250,000 from the initial date of the
  offering through October 9, 1993. After a firm has met the minimum $250,000
  volume level, volume discounts will be given on all trades originated from or
  by that firm, including those placed prior to reaching the $250,000 level, and
  will continue to be given during the entire initial offering period.
 
The discounted rates for each U.S. Treasury Portfolio Series are as follows:
 
<TABLE>
<CAPTION>
                                                                            PRIMARY MARKET
                                                     ------------------------------------------------------------


                                                          REGULAR CONCESSION                FIRM SALES OR
                                                              OR AGENCY                   SALE ARRANGEMENTS
                                                              COMMISSION                 ($1,000,000 OR MORE)
                                                     ----------------------------    ----------------------------
               DOLLAR AMOUNT OF TRADE*               0-4.99 YEARS    5-9.99 YEARS    0-4.99 YEARS    5-9.99 YEARS
    ----------------------------------------------   ------------    ------------    ------------    ------------
    <S>                                              <C>             <C>             <C>             <C>
    $0 to $499,999................................       1.00%           1.75%           1.05%           2.00%
    $500,000 to $999,999..........................        .90            1.50             .95            1.60
    $1,000,000 to $1,499,000......................        .75            1.25             .80            1.30
    $1,500,000 or more............................   Negotiated                      Negotiated
</TABLE>
 
                                                              SECONDARY MARKET
                                       ---------------------------------------

<TABLE>
<CAPTION>

                                                    DOLLAR WEIGHTED AVERAGE YEARS TO MATURITY
                                         0-1.99       2-2.99       3-4.99       5-6.99       7-9.99
                                       ----------   ----------   ----------   ----------   ----------
                                       --------------------------------------------------------------

                                                             DISCOUNT PER UNIT
         DOLLAR AMOUNT OF TRADE                      (PERCENT OF PUBLIC OFFERING PRICE)
    ---------------------------------  --------------------------------------------------------------
    <S>                                <C>          <C>          <C>          <C>          <C>
    Less than $500,000...............     .75%        1.00%        1.00%        1.25%        2.00%
    $500,000 to $999,999.............     .50          .75          .90          1.00         1.75
    $1,000,000 to $1,499,999.........     .50          .50          .75          .75          1.50
    $1,500,000 or more...............  Negotiated   Negotiated   Negotiated   Negotiated   Negotiated
</TABLE>
 
- ------------
 
 *The breakpoint discounts are also applied on a Unit basis utilizing a
  breakpoint equivalent in the above tables of $1,000 per 100 Units.
 
**Volume discounts will be given to firms who reach cumulative firm sales or
  sales arrangement levels of at least $250,000 from the initial date of the
  offering through October 9, 1993. After a firm has met the minimum $250,000
  volume level, volume discounts will be given on all trades originated from or
  by that firm, including those placed prior to reaching the $250,000 level, and
  will continue to be given during the entire initial offering period.
 
The Sponsor reserves the right to change the discounts set forth above from time
to time. In addition to such discounts, the Sponsor may, from time to time, pay
or allow an additional discount, in the form of cash or other compensation, to
dealers employing registered representatives who sell, during a specified time
 
                                      A-7

<PAGE>   33
 
period, a minimum dollar amount of Units of the Trust and other unit investment
trusts underwritten by the Sponsor.
 
Certain commercial banks are making Units of each Series of the Trust available
to their customers on an agency basis. A portion of the sales charge paid by
their customers is retained by or remitted to the banks in the amounts shown in
the table above. Under the Glass-Steagall Act, banks are prohibited from
underwriting Trust Units; however, the Glass-Steagall Act does permit certain
agency transactions and the banking regulators have indicated that these
particular agency transactions are permitted under such Act. In addition, state
securities laws on this issue may differ from the interpretations of federal law
expressed herein and banks and financial institutions may be required to
register as dealers pursuant to state law. The Sponsor reserves the right to
change the discounts from time to time. The difference between the discounts and
the sales charge will be retained by the Sponsor.
 
The Sponsor also may have realized a profit (or sustained a loss) on the deposit
of the Portfolio Obligations in each Series of the Trust representing the
difference between the cost of the Portfolio Obligations to the Sponsor and the
cost of the Portfolio Obligations to the Trust. See 'Portfolios.' During the
initial offering period and thereafter to the extent additional Units continue
to be issued and offered for sale to the public, the Sponsor may realize
additional profit or sustain a loss due to daily fluctuations in the offering
prices of the Portfolio Obligations in the Series of the Trust and thus in the
Public Offering Price of Units received by the Sponsor.
 
The Sponsor may also realize profits or sustain losses while maintaining a
secondary market in the Units of the Series of the Trust, in the amount of any
difference between the prices at which it buys Units and the prices at which
Units are resold after allowing for the discount (such prices include a sales
charge) or the prices at which the Sponsor redeems such Units (based on the bid
side of the Portfolio Obligations in such Series of the Trust), as the case may
be.
 
Cash, if any, received by a dealer from Unitholders prior to the settlement date
for a purchase of Units of any Series may be used in such dealer's business
subject to the limitations of Rule 15c3-3 under the Securities Exchange Act of
1934 and may be of benefit to the dealer.
 
TAX STATUS
 
GNMA PORTFOLIO SERIES
 
In the opinion of Chapman and Cutler, counsel for the Sponsor, under existing
law:
 
(1) The GNMA Portfolio Series is not an association taxable as a corporation for
Federal income tax purposes; each Unitholder will be treated as the owner of a
pro rata portion of the GNMA Portfolio Series of the Trust under the Code and
income of such Series will be treated as the income of the Unitholders under the
Code:
 
(2) Each Unitholder will have a taxable event when the GNMA Portfolio Series
disposes of a Security, or when the Unitholder redeems or sells his Units.
Unitholders must reduce the tax basis of their Units for their share of accrued
interest received by the GNMA Portfolio Series, if any, on Securities delivered
after the Unitholders pay for their Units to the extent that such interest
accrued on such Securities during the period from the Unitholder's settlement
date to the date such Securities are delivered to the GNMA Portfolio Series and,
consequently, such Unitholders may have an increase in taxable gain or reduction
in capital loss upon the disposition of such Units. Gain or loss upon the sale
or redemption of Units is measured by comparing the proceeds of such sale or
redemption with the adjusted basis of the Units. If the Trustee disposes of
Securities (whether by sale, payment on maturity, redemption or otherwise), gain
or loss is recognized to the Unitholder. The amount of any such gain or loss is
measured by comparing the
 
                                      A-8

<PAGE>   34
 
Unitholder's pro rata share of the total proceeds from such disposition with the
Unitholder's basis for his or her fractional interest in the asset disposed of.
In the case of a Unitholder who purchases Units, such basis (before adjustment
for earned original issue discount, amortized bond premium and accrued market
discount (if the Unitholder has elected to include such market discount in
income as it accrues), if any) is determined by apportioning the cost of the
Units among each of the GNMA Portfolio Series assets ratably according to value
as of the date of acquisition of the Units. The tax cost reduction requirements
of said Code relating to amortization of bond premium may, under some
circumstances, result in the Unitholder realizing a taxable gain when his Units
are sold or redeemed for an amount equal to his original cost.
 
(3) The GNMA Portfolio Series contains Stripped Treasury Securities. The
Stripped Treasury Securities held by the Trust are treated as bonds that were
originally issued at an original issue discount provided, pursuant to a
Regulation (the 'Regulation') issued on December 28, 1992, that the amount of
original issue discount determined under Section 1286 of the Code is not less
than a 'de minimis' amount as determined thereunder. Because the Stripped
Treasury Securities represent interests in 'stripped' U.S. Treasury bonds, a
Unitholder's initial cost for his pro rata portion of each Stripped Treasury
Security held by the Trust (determined at the time he acquires his Units, in the
manner described above) shall be treated as its 'purchase price' by the
Unitholder. Original issue discount is effectively treated as interest for
Federal income tax purposes, and the amount of original issue discount in this
case is generally the difference between the bond's purchase price and its
stated redemption price at maturity. A Unitholder will be required to include in
gross income for each taxable year the sum of his daily portions of original
issue discount attributable to the Stripped Treasury Securities held by the
Trust as such original issue discount accrues and will, in general, be subject
to Federal income tax with respect to the total amount of such original issue
discount that accrues for such year even though the income is not distributed to
the Unitholders during such year to the extent it is not less than a 'de
minimis' amount as determined under the Regulation. In general, original issue
discount accrues daily under a constant interest rate method which takes into
account the semi-annual compounding of accrued interest. In the case of the
Stripped Treasury Securities, this method will generally result in an increasing
amount of income to the Unitholders each year. Unitholders should consult their
tax advisers regarding the Federal income tax consequences and accretion of
original issue discount.
 
(4) The Unitholder's aliquot share of the total proceeds received on the
disposition of, or principal paid with respect to, a Security held by the Trust
will constitute ordinary income (which will be treated as interest income for
most purposes) to the extent it does not exceed the accrued market discount on
such Security issued after July 18, 1984 that has not previously been included
in taxable income by such Unitholder. A Unitholder may generally elect to
include market discount in income as such discount accrues. In general, market
discount is the excess, if any, of the Unitholder's pro rata portion of the
outstanding principal balance of a Security over the Unitholder's initial tax
cost for such pro rata portion, determined at the time such Unitholder acquires
his Units. However, market discount with respect to any Security will generally
be considered zero if it amounts to less than 0.25% of the obligation's stated
redemption price at maturity times the number of years to maturity. The market
discount rules do not apply to Stripped Treasury Securities because they are
stripped debt instruments subject to special original issue discount rules as
discussed above. If a Unitholder sells his Units, gain, if any, will constitute
ordinary income to the extent of the aggregate of the accrued market discount on
the Unitholder's pro rata portion of each Security issued after July 18, 1984
that is held by the Trust that has not previously been included in taxable
income by such Unitholder. In general, market discount accrues on a ratable
basis unless the Unitholder elects to accrue such discount on a constant
interest rate basis. However, a Unitholder should consult his own tax adviser
regarding the accrual of market discount. The deduction by a Unitholder for any
interest expense incurred to purchase or carry Units will be reduced by the
amount of any accrued market discount
 
                                      A-9

<PAGE>   35
 
that has not yet been included in taxable income by such Unitholder. In general,
the portion of any interest expense which is not currently deductible would be
ultimately deductible when the accrued market discount is included in income.
 
(5) The Code provides that 'miscellaneous itemized deductions' are allowable
only to the extent that they exceed two percent of an individual taxpayer's
adjusted gross income. Miscellaneous itemized deductions subject to this
limitation under present law include a Unitholder's pro rata share of expenses
paid by the Trust, including fees of the Trustee and the Evaluator but does not
include amortizable bond premium on Securities held by the Trust.
 
'The Revenue Reconciliation Act of 1993' (the 'Tax Act') was recently enacted.
The Tax Act raises tax rates on ordinary income while capital gains remain
subject to a 28% maximum stated rate. Because some or all capital gains are
taxed at a comparatively lower rate under the Tax Act, the Tax Act includes a
provision that recharacterizes capital gains as ordinary income in the case of
certain financial transactions that are 'conversion transactions' effective for
transactions entered into after April 30, 1993. Unitholders and prospective
investors should consult with their tax advisers regarding the potential effect
of this provision on their investment in Units.
 
A Unitholder of the GNMA Portfolio Series who is not a citizen or resident of
the United States or a United States domestic corporation (a 'Foreign Investor')
will generally not be subject to U.S. Federal income taxes, including
withholding taxes on amounts distributed from the Trust (including any original
issue discount) on, or any gain from the sale or other disposition of, his Units
or the sale or disposition of any Securities by the Trustee, provided that (i)
the interest income or gain is not effectively connected with the conduct by the
Foreign Investor of a trade or business within the United States, (ii) with
respect to any gain, the Foreign Investor (if an individual) is not present in
the United States for 183 days or more during the taxable year, and (iii) the
Foreign Investor provides the required certification of his status and of the
matters contained in clauses (i) and (ii) above, and further provided that the
exemption from withholding for U.S. Federal income taxes for interest on any
U.S. Treasury Obligation shall only apply to the extent the U.S. Treasury
Obligation was issued after July 18, 1984 and for interest on any Ginnie Mae to
the extent the mortgages underlying such Ginnie Mae were originated after July
18, 1984.
 
Amounts otherwise distributable by the Trust to a Foreign Investor will
generally be subject to withholding taxes under Section 1441 of the Code unless
the Unitholder timely provides his financial representative or the Trustee with
a statement that (i) is signed by the Unitholder under penalties of perjury,
(ii) certifies that such Unitholder is not a United States person, or in the
case of an individual, that he is neither a citizen nor a resident of the United
States, and (iii) provides the name and address of the Unitholder. The statement
may be made, at the option of the person otherwise required to withhold, on Form
W-8 or on a substitute form that is substantially similar to Form W-8. If the
information provided on the statement changes, the beneficial owner must so
inform the person otherwise required to withhold within 30 days of such change.
 
The foregoing discussions relate only to Federal income taxes on distributions
by the Trust; such distributions may also be subject to state and local
taxation. Unitholders should consult their own tax advisers regarding questions
of state and local taxation applicable to the Units.
 
Foreign Unitholders should consult their own tax advisers with respect to the
foreign and United States tax consequences or ownership of Units.
 
It should be remembered that even if distributions are reinvested, they are
still treated as distributions for income tax purposes.
 
                                      A-10

<PAGE>   36
 
It should also be remembered that Unitholders may be required for Federal income
tax purposes to include amounts in ordinary gross income in advance of the
receipt of the cash attributable to such income.
 
Each Unitholder (other than a foreign investor who has properly provided the
certifications described above) will be requested to provide the Unitholder's
taxpayer identification number to the Trustee and to certify that the Unitholder
has not been notified that payments to the Unitholder are subject to back-up
withholding. If the proper taxpayer identification number and appropriate
certification are not provided when requested, distributions by the Trust to
such Unitholder will be subject to back-up withholding.
 
U.S. TREASURY PORTFOLIO SERIES
 
In the opinion of Chapman and Cutler, counsel for the Sponsor, under existing
law:
 
(1) The U.S. Treasury Portfolio Series is not an association taxable as a
corporation for Federal income tax purposes; each Unitholder will be treated as
the owner of a pro rata portion of the U.S. Treasury Portfolio Series of the
Trust under the Code and income of such Series will be treated as the income of
the Unitholders under the Code:
 
(2) Each Unitholder will have a taxable event when the U.S. Treasury Portfolio
Series disposes of a U.S. Treasury Obligation, or when the Unitholder redeems or
sells his Units. Unitholders must reduce the tax basis of their Units for their
share of accrued interest received by the U.S. Treasury Portfolio Series, if
any, on U.S. Treasury Obligations delivered after the Unitholders pay for their
Units to the extent that such interest accrued on such U.S. Treasury Obligations
during the period from the Unitholder's settlement date to the date such U.S.
Treasury Obligations are delivered to the U.S. Treasury Portfolio Series and,
consequently, such Unitholders may have an increase in taxable gain or reduction
in capital loss upon the disposition of such Units. Gain or loss upon the sale
or redemption of Units is measured by comparing the proceeds of such sale or
redemption with the adjusted basis of the Units. If the Trustee disposes of U.S.
Treasury Obligations (whether by sale, payment on maturity, redemption or
otherwise), gain or loss is recognized to the Unitholder. The amount of any such
gain or loss is measured by comparing the Unitholder's pro rata share of the
total proceeds from such disposition with the Unitholder's basis for his or her
fractional interest in the asset disposed of. In the case of a Unitholder who
purchases Units, such basis (before adjustment for earned original issue
discount, amortized bond premium and accrued market discount (if the Unitholder
has elected to include such market discount in income as it accrues), if any) is
determined by apportioning the cost of the Units among each of the U.S. Treasury
Portfolio Series assets ratably according to value as of the date of acquisition
of the Units. The tax cost reduction requirements of said Code relating to
amortization of bond premium may, under some circumstances, result in the
Unitholder realizing a taxable gain when his Units are sold or redeemed for an
amount equal to his original cost.
 
(3) The U.S. Treasury Portfolio Series contains Stripped Treasury Securities.
The Stripped Treasury Securities held by the Trust are treated as bonds that
were originally issued at an original issue discount provided, pursuant to a
Regulation (the 'Regulation') issued on December 28, 1992, that the amount of
original issue discount determined under Section 1286 of the Code is not less
than a 'de minimis' amount as determined thereunder. Because the Stripped
Treasury Securities represent interests in 'stripped' U.S. Treasury bonds, a
Unitholder's initial cost for his pro rata portion of each Stripped Treasury
Security held by the Trust (determined at the time he acquires his Units, in the
manner described above) shall be treated as its 'purchase price' by the
Unitholder. Original issue discount is effectively treated as interest for
Federal income tax purposes, and the amount of original issue discount in this
case is generally the difference between the bond's purchase price and its
stated redemption price at maturity. A Unitholder will be required to include in
gross income for each taxable year the sum of his daily portions of original
issue
 
                                      A-11

<PAGE>   37
 
discount attributable to the Stripped Treasury Securities held by the Trust as
such original issue discount accrues and will, in general, be subject to Federal
income tax with respect to the total amount of such original issue discount that
accrues for such year even though the income is not distributed to the
Unitholders during such year to the extent it is not less than a 'de minimis'
amount as determined under the Regulation. In general, original issue discount
accrues daily under a constant interest rate method which takes into account the
semi-annual compounding of accrued interest. In the case of the Stripped
Treasury Securities, this method will generally result in an increasing amount
of income to the Unitholders each year. Unitholders should consult their tax
advisers regarding the Federal income tax consequences and accretion of original
issue discount.
 
(4) The Unitholder's aliquot share of the total proceeds received on the
disposition of, or principal paid with respect to, a U.S. Treasury Obligation
held by the Trust will constitute ordinary income (which will be treated as
interest income for most purposes) to the extent it does not exceed the accrued
market discount on such U.S. Treasury Obligation issued after July 18, 1984 that
has not previously been included in taxable income by such Unitholder. A
Unitholder may generally elect to include market discount in income as such
discount accrues. In general, market discount is the excess, if any, of the
Unitholder's pro rata portion of the outstanding principal balance of a U.S.
Treasury Obligation over the Unitholder's initial tax cost for such pro rata
portion, determined at the time such Unitholder acquires his Units. However,
market discount with respect to any U.S. Treasury Obligation will generally be
considered zero if it amounts to less than 0.25% of the obligation's stated
redemption price at maturity times the number of years to maturity. The market
discount rules do not apply to Stripped Treasury Securities because they are
stripped debt instruments subject to special original issue discount rules as
discussed above. If a Unitholder sells his Units, gain, if any, will constitute
ordinary income to the extent of the aggregate of the accrued market discount on
the Unitholder's pro rata portion of each U.S. Treasury Obligation issued after
July 18, 1984 that is held by the Trust that has not previously been included in
taxable income by such Unitholder. In general, market discount accrues on a
ratable basis unless the Unitholder elects to accrue such discount on a constant
interest rate basis. However, a Unitholder should consult his own tax adviser
regarding the accrual of market discount. The deduction by a Unitholder for any
interest expense incurred to purchase or carry Units will be reduced by the
amount of any accrued market discount that has not yet been included in taxable
income by such Unitholder. In general, the portion of any interest expense which
is not currently deductible would be ultimately deductible when the accrued
market discount is included in income.
 
(5) The Code provides that 'miscellaneous itemized deductions' are allowable
only to the extent that they exceed two percent of an individual taxpayer's
adjusted gross income. Miscellaneous itemized deductions subject to this
limitation under present law include a Unitholder's pro rata share of expenses
paid by the Trust, including fees of the Trustee and the Evaluator but does not
include amortizable bond premium on U.S. Treasury Obligations held by the Trust.
 
'The Revenue Reconciliation Act of 1993' (the 'Tax Act') was recently enacted.
The Tax Act raises tax rates on ordinary income while capital gains remain
subject to a 28% maximum stated rate. Because some or all capital gains are
taxed at a comparatively lower rate under the Tax Act, the Tax Act includes a
provision that recharacterizes capital gains as ordinary income in the case of
certain financial transactions that are 'conversion transactions' effective for
transactions entered into after April 30, 1993. Unitholders and prospective
investors should consult with their tax advisers regarding the potential effect
of this provision on their investment in Units.
 
The Sponsor believes that Unitholders who are individuals will not be subject to
any state personal income taxes on the interest received by the U.S. Treasury
Portfolio Series and distributed to them. However, Unitholders (including
individuals) may be subject to state and local taxes on any capital gains (or
market discount treated as ordinary income) derived from the U.S. Treasury
Portfolio Series and to other state and
 
                                      A-12

<PAGE>   38
 
local taxes (including corporate income or franchise taxes, personal property or
intangibles taxes, and estate or inheritance taxes) on their Units or the income
derived therefrom. In addition, individual Unitholders (and any other
Unitholders which are not subject to state and local taxes on the interest
income derived from the U.S. Treasury Portfolio Series) will probably not be
entitled to a deduction for state and local tax purposes for their share of the
fees and expenses paid by the U.S. Treasury Portfolio Series, for any amortized
bond premium or for any interest on indebtedness incurred to purchase or carry
their Units. Therefore, even though the Sponsor believes that interest income
from the U.S. Treasury Portfolio Series is exempt from state personal income
taxes in all states Unitholders should consult their own tax advisers with
respect to state and local taxation.
 
A Unitholder of the U.S. Treasury Portfolio Series who is not a citizen or
resident of the United States or a United States domestic corporation (a
'Foreign Investor') will generally not be subject to U.S. Federal income taxes,
including withholding taxes on amounts distributed from the Trust (including any
original issue discount) on, or any gain from the sale or other disposition of,
his Units or the sale or disposition of any U.S. Treasury Obligations by the
Trustee, provided that (i) the interest income or gain is not effectively
connected with the conduct by the Foreign Investor of a trade or business within
the United States, (ii) with respect to any gain, the Foreign Investor (if an
individual) is not present in the United States for 183 days or more during the
taxable year, and (iii) the Foreign Investor provides the required certification
of his status and of the matters contained in clauses (i) and (ii) above, and
further provided that the exemption from withholding for U.S. Federal income
taxes for interest on any U.S. Treasury Obligation shall only apply to the
extent the U.S. Treasury Obligation was issued after July 18, 1984.
 
Amounts otherwise distributable by the Trust to a Foreign Investor will
generally be subject to withholding taxes under Section 1441 of the Code unless
the Unitholder timely provides his financial representative or the Trustee with
a statement that (i) is signed by the Unitholder under penalties of perjury,
(ii) certifies that such Unitholder is not a United States person, or in the
case of an individual, that he is neither a citizen nor a resident of the United
States, and (iii) provides the name and address of the Unitholder. The statement
may be made, at the option of the person otherwise required to withhold, on Form
W-8 or on a substitute form that is substantially similar to Form W-8. If the
information provided on the statement changes, the beneficial owner must so
inform the person otherwise required to withhold within 30 days of such change.
 
Foreign Unitholders should consult their own tax advisers with respect to the
foreign and United States tax consequences or ownership of Units.
 
It should be remembered that even if distributions are reinvested, they are
still treated as distributions for income tax purposes.
 
It should also be remembered that Unitholders may be required for Federal income
tax purposes to include amounts in ordinary gross income in advance of the
receipt of the cash attributable to such income.
 
Each Unitholder (other than a foreign investor who has properly provided the
certifications described above) will be requested to provide the Unitholder's
taxpayer identification number to the Trustee and to certify that the Unitholder
has not been notified that payments to the Unitholder are subject to back-up
withholding. If the proper taxpayer identification number and appropriate
certification are not provided when requested, distributions by the Trust to
such Unitholder will be subject to back-up withholding.
 
RETIREMENT PLANS
 
As indicated under 'Tax Status' above, Unitholders of U.S. Treasury Portfolio
Series will be required for Federal income tax purposes to include amounts in
ordinary gross income in advance of the receipt of the
 
                                      A-13

<PAGE>   39
 
cash attributable to such income. Therefore, purchase of Units may be
appropriate only for an account which can pay taxes with other funds in advance
of the receipt of the cash attributable to such income or for Individual
Retirement Accounts, Keogh plans, pension funds and other qualified retirement
plans, certain of which are briefly described below.
 
Additionally, GNMA Portfolio Series may be well suited for purchase by
Individual Retirement Accounts, Keogh Plans, pension funds and other qualified
retirement plans, certain of which are briefly described below.
 
Generally, capital gains and income received under each of the foregoing plans
are deferred from Federal taxation. All distributions from such plans are
generally treated as ordinary income but may, in some cases, be eligible for
special income averaging or tax-deferred rollover treatment. Investors
considering participation in any such plan should review specific tax laws
related thereto and should consult their attorneys or tax advisers with respect
to the establishment and maintenance of any such plan. Such plans are offered by
brokerage firms and other financial institutions. Each Series of the Trust will
waive the $1,000 minimum investment requirement for IRA accounts. The minimum
investment is $250 for tax-defined plans such as IRA accounts. Fees and charges
with respect to such plans may vary.
 
Individual Retirement Account--IRA.  Any individual under age 70 1/2 may
contribute the lesser of $2,000 or 100% of compensation to an IRA annually. Such
contributions are fully deductible if the individual (and spouse if filing
jointly) are not covered by a retirement plan at work. The deductible amount an
individual may contribute to an IRA will be reduced $10 for each $50 of adjusted
gross income over $25,000 ($40,000 if married, filing jointly or $0 if married,
filing separately), if either an individual or their spouse (if married, filing
jointly) is an active participant in an employer maintained retirement plan.
Thus, if an individual has adjusted gross income over $35,000 ($50,000 if
married, filing jointly or $0 if married, filing separately) and if an
individual or their spouse is an active participant in an employer maintained
retirement plan, no IRA deduction is permitted. Under the Code, an individual
may make nondeductible contributions to the extent deductible contributions are
not allowed. All distributions from an IRA (other than the return of certain
excess contributions) are treated as ordinary income for Federal income taxation
purposes provided that under the Code an individual need not pay tax on the
return of nondeductible contributions, the amount includable in income for the
taxable year is the portion of the amount withdrawn for the taxable year as the
individual's aggregate nondeductible IRA contributions bear to the aggregate
balance of all IRAs of the individual.
 
A participant's interest in an IRA must be, or commence to be, distributed to
the participant not later than April 1 of the calendar year following the year
during which the participant attains age 70 1/2. Distributions made before
attainment of age 59 1/2, except in the case of the participant's death or
disability, or where the amount distributed is to be rolled over to another IRA,
or where the distributions are taken as a series of substantially equal periodic
payments over the participant's life or life expectancy (or the joint lives or
life expectancies of the participant and the designated beneficiary) are
generally subject to a surtax in an amount equal to 10% of the distribution. The
amount of such periodic payments may not be modified before the later of five
years or attainment of age 59 1/2. Excess contributions are subject to an annual
6% excise tax.
 
IRA applications, disclosure statements and trust agreements are available from
the Sponsor upon request.
 
Qualified Retirement Plans.  Units of the GNMA Portfolio Series and the U.S.
Treasury Portfolio Series may be purchased by qualified pension or profit
sharing plans maintained by corporations, partnerships or sole proprietors. The
maximum annual contribution for a participant in a money purchase pension plan
or to paired profit sharing and pension plans is the lesser of 25% of
compensation or $30,000. Prototype plan documents for establishing qualified
retirement plans are available from the Sponsor upon request.
 
                                      A-14

<PAGE>   40
 
Excess Distributions Tax.  In addition to the other taxes due by reason of a
plan distribution, a tax of 15% may apply to certain aggregate distributions
from IRAs, Keogh plans, and corporate retirement plans to the extent such
aggregate taxable distributions exceed specified amounts (generally $150,000, as
adjusted) during a tax year. This 15% tax will not apply to distributions on
account of death, qualified domestic relations orders or amounts rolled over to
an eligible plan. In general, for lump sum distributions the excess distribution
over $750,000 (as adjusted) will be subject to the 15% tax.
 
The Trustee, Investors Fiduciary Trust Company ('IFTC'), has agreed to act as
custodian for certain retirement plan accounts. An annual fee of $12.00 per
account, if not paid separately, will be assessed by the Trustee and paid
through the liquidation of shares of the reinvestment account. An individual
wishing IFTC to act as custodian must complete a Kemper UIT/IRA application and
forward it along with a check made payable to Investors Fiduciary Trust Company.
Certificates for Individual Retirement Accounts can not be issued.
 
REINVESTMENT PROGRAM
 
Each Unitholder of the Trust may elect to have distributions of principal
(including capital gains, if any) or interest or both automatically invested
without charge in shares of any mutual fund underwritten or advised by an
affiliate of the Sponsor, Kemper Financial Services, Inc. (the 'Kemper Funds'),
other than those Kemper Funds sold with a contingent deferred sales charge.
Since the portfolio securities and investment objectives of such Kemper Funds
may differ significantly from that of the Trust Funds, Unitholders should
carefully consider the consequences before selecting such Kemper funds for
reinvestment.
 
Detailed information with respect to the investment objectives and management of
these Kemper Funds is contained in their respective prospectuses, which can be
obtained from the Sponsor or an investor's financial representative upon
request. An investor should read the appropriate prospectus prior to making the
election to reinvest. Unitholders who desire to have their distributions
automatically reinvested should inform their financial representative at the
time of purchase or should file with the Program Agent referred to below a
written notice of such election.
 
Unitholders who initially elect to receive distributions in cash may elect to
participate in the reinvestment program by filing with the Program Agent an
election to have such distributions reinvested without charge. The election must
be received by the Program Agent at least ten days prior to the Record Date
applicable to any distribution in order to be in effect for such distribution.
The election to participate in the reinvestment program shall remain in effect
until a subsequent notice is received in writing by the Program Agent. See
'Administration of the Trust Funds--Distributions from the Interest, Principal
and Capital Gains Accounts.'
 
The Program Agent is Investors Fiduciary Trust Company. All inquiries concerning
participation in distribution reinvestment should be directed to the Program
Agent at P.O. Box 419430, Kansas City, Missouri 64173-0216, telephone
816-474-8786.
 
Unitholders of each Series of the Trust participating in IRAs, Keogh Plans and
other tax deferred retirement plans, may find it highly advantageous to
participate in the Reinvestment Program in order to keep the monies in the
account fully invested at all times. Should reinvestment be selected, an account
with an identical registration to that established at the time the Trust Units
are purchased will be set up in the reinvestment fund selected by the investor.
Investors should consult with their plan custodian as to the appropriate
disposition of distributions. If participants in IRAs, Keogh plans and other tax
deferred retirement plans do not elect a reinvestment option, cash distributions
will be sent to the custodian of the retirement plan and not to the investors,
since payments to the investors would constitute a distribution from the plan
which would result in tax penalties for premature withdrawals from such
programs. See 'Retirement Plans.'
 
                                      A-15

<PAGE>   41
 
REDEMPTION
 
RIGHT OF REDEMPTION. It may be possible, in some cases, for Units of a Series of
the Trust to be sold in the over-the-counter market for a higher price than the
Redemption Value for such Units. Therefore, a Unitholder who wishes to dispose
of his Units is advised to inquire through his financial representative as to
current market prices for Units in order to determine if there is an
over-the-counter price in excess of the Redemption Value per Unit or the
Sponsor's Repurchase Price for such Series of the Trust.
 
A Unitholder who does not dispose of Units in the secondary market described
above may cause Units to be redeemed by the Trustee by making a written request
to the Trustee, Investors Fiduciary Trust Company, P.O. Box 419430, Kansas City,
Missouri 64173-0216 and, in the case of Units evidenced by a certificate, by
tendering such certificate to the Trustee, properly endorsed or accompanied by a
written instrument or instruments of transfer in form satisfactory to the
Trustee. Unitholders must sign the request, and such certificate or transfer
instrument, exactly as their names appear on the records of the Trustee and on
any certificate representing the Units to be redeemed. If the amount of the
redemption is $25,000 or less and the proceeds are payable to the Unitholder(s)
of record at the address of record, no signature guarantee is necessary for
redemption by individual account owners (including joint owners) or fiduciary
accounts where the fiduciary is named in the account registration. Additional
documentation may be requested, and a signature guarantee is always required,
from corporations, executors, administrators, Trustees, guardians or
associations. If required, the signatures must be guaranteed by a participant in
the Securities Transfer Agents Medallion Program ('STAMP') or such other
signature guarantee program in addition to or in substitution for STAMP as may
be accepted by the Trustee. A certificate should only be sent by registered or
certified mail for the protection of the Unitholder. Since tender of the
certificate is required for redemption when one has been issued, Units
represented by a certificate cannot be redeemed until the certificate
representing such Units has been received by the purchaser.
 
Redemption shall be made by the Trustee on the seventh calendar day following
the day on which a tender for redemption is received, or if the seventh calendar
day is not a business day, on the first business day prior thereto (the
'Redemption Date') by payment of cash equivalent to the Redemption Value,
determined as set forth below under 'Computation of Redemption Value,' as of the
evaluation time stated under 'Essential Information,' for the appropriate Series
next following such tender, multiplied by the number of Units of such Series
being redeemed. Any Units redeemed shall be cancelled and any undivided
fractional interest in such Series of the Trust extinguished. The price received
upon redemption might be more or less than the amount paid by the Unitholder
depending on the value of the Portfolio Obligations in such Series at the time
of redemption.
 
During the period in which the Sponsor maintains a secondary market for Units of
a Series of the Trust, the Sponsor has the right to repurchase any Unit
presented for tender to the Trustee for redemption no later than the close of
business on the second business day following such presentation.
 
The Trustee is irrevocably authorized in its discretion, if the Sponsor does not
elect to repurchase any Unit tendered for redemption or if the Sponsor itself
tenders Units for redemption, in lieu of redeeming Units presented for tender at
the Redemption Value, to sell such Units in the over-the-counter market for the
account of a tendering Unitholder at prices which will return to the Unitholder
monies, net after brokerage commissions, transfer taxes and other charges, equal
to or in excess of the Redemption Value for such Units. In the event of any such
sale, the Trustee will pay the net proceeds thereof to the Unitholder on the day
he would otherwise be entitled to receive payment of the Redemption Value.
 
Any amounts to be paid on redemption representing interest shall be withdrawn
from the Interest Account of such Series to the extent funds are available. All
other amounts paid on redemption shall be withdrawn from the Principal Account
of such Series. The Trustee is authorized by the Indenture to sell Portfolio
 
                                      A-16

<PAGE>   42
 
Obligations in order to provide funds for redemption. To the extent Portfolio
Obligations are sold, the size of that Series of the Trust will be reduced.
Portfolio Obligations will be sold by the Trustee so as to maintain, as closely
as practicable, the original percentage relationship between the principal
amounts of the Portfolio Obligations in such Series. The Portfolio Obligations
to be sold for purposes of redeeming Units will be selected from a list supplied
by the Sponsor. The Portfolio Obligations will be chosen for this list by the
Sponsor on the basis of such market and credit factors as it may determine are
in the best interests of such Series of the Trust. Provision is made under the
Indenture for the Sponsor to specify minimum face amounts in which blocks of
Portfolio Obligations are to be sold in order to obtain the best price
available. While such minimum amounts may vary from time to time in accordance
with market conditions, it is anticipated that the minimum face amounts which
would be specified would range from $25,000 to $100,000. Sales may be required
at a time when the Portfolio Obligations would not otherwise be sold and might
result in lower prices than might otherwise be realized. Moreover, due to the
minimum principal amount in which Portfolio Obligations may be required to be
sold, the proceeds of such sales may exceed the amount necessary for payment of
Units redeemed. To the extent not used to meet other redemption requests in such
Series, such excess proceeds will be distributed pro rata to all remaining
Unitholders of record of such Trust, unless reinvested in substitute Portfolio
Obligations. See 'Administration of the Trust Funds--Portfolio Supervision.'
 
COMPUTATION OF REDEMPTION VALUE.  The value of each Series of the Trust is
determined as of the Evaluation Time stated under 'Essential Information' for
the appropriate Series above (a) semiannually, on June 30 and December 31 of
each year (or the last business day prior thereto), (b) on any business day as
of the Evaluation Time next following the tender of any Unit and (c) on any
other business day desired by the Sponsor or the Trustee, (1) by adding:
 
          a. The aggregate bid side evaluation of the Portfolio Obligations in
     such Series of the Trust, as determined by the Evaluator;
 
          b. Cash on hand in such Series of the Trust, other than money
     deposited to purchase contract obligations or money credited to the Reserve
     Account; and
 
          c. Accrued but unpaid interest on the Portfolio Obligations in such
     Series of the Trust to the redemption date.
 
(2) and then deducting from the resulting figure: amounts representing any
applicable taxes or governmental charges payable by such Series of the Trust for
the purpose of making an addition to the reserve account (as defined in the
Indenture, the 'Reserve Account'), amounts representing estimated accrued
expenses (including audit fees) of such Series of the Trust, amounts
representing unpaid fees and expenses of the Trustee, Sponsor (if applicable),
counsel and the Evaluator and monies held for distribution to Unitholders of
record of such Series as of the business day prior to the evaluation being made
on the days or dates set forth above;
 
(3) and then dividing the result of the above computation by the total number of
Units of such Series outstanding on the date of evaluation. The resulting figure
equals the Redemption Value for each Unit of such Series. The Evaluator will
determine the aggregate current bid price evaluation of the Securities in each
Series of the Trust as set forth under 'Public Offering of Units--Public
Offering Price.'
 
POSTPONEMENT OF REDEMPTION. The right of redemption of any Series may be
suspended and payment of the Redemption Value per Unit postponed for more than
seven calendar days following a tender of Units for redemption for any period
(as determined by the Securities and Exchange Commission) during which the New
York Stock Exchange is closed, other than for customary weekend and holiday
closings, or during which trading on that Exchange is restricted or an emergency
exists as a result of which disposal or
 
                                      A-17

<PAGE>   43
 
evaluation of the Portfolio Obligations is not reasonably practicable, or for
such other periods as the Securities and Exchange Commission may by order
permit. The Trustee is not liable to any person or in any way for any loss or
damage that may result from any such suspension or postponement.
 
COMPARISON OF PUBLIC OFFERING PRICE AND REDEMPTION VALUE
 
The Public Offering Price of Units of each Series of the Trust in the initial
offering period is determined on the basis of current offering prices for the
Portfolio Obligations in such Series (see 'Public Offering of Units,' herein),
while the Redemption Value and Sponsor's Repurchase Price for Units of such
Series is determined on the basis of current bid prices for the Portfolio
Obligations. On the business day indicated under 'Essential Information' for the
appropriate Series, the Public Offering Price (which includes a sales charge) of
each Series exceeded the Redemption Value thereof by the amount indicated under
'Essential Information' for such Series. The bid prices for the Portfolio
Obligations may be expected to be less than the offering prices. Under current
market conditions the bid prices for Ginnie Maes are expected to be
approximately 1/4 to 1/2 of 1% lower in the case of such Securities backed by
mortgages on 1-to 4-family dwellings. Under current market conditions the bid
prices for U.S. Treasury Obligations are expected to be approximately 1/8 to
 1/4 of 1% lower than the offer price of such obligations. On the business day
indicated under 'Essential Information' for the appropriate Series the bid side
evaluation was lower than the offering side evaluation by the amount set forth
in the 'Portfolio' for the appropriate Series. For this reason, among others
(including fluctuations in the market prices of such Portfolio Obligations and
the fact that the Public Offering Price of each Series includes the sales
charge), the amount realized by a Unitholder upon any redemption of Units may be
less than the price paid by him for such Units.
 
RIGHTS OF UNITHOLDERS
 
UNITHOLDERS. A Unitholder is deemed to be a beneficiary of the Series of the
Trust which he purchased and is vested with all right, title and interest in the
appropriate Series of the Trust, each of which was created by the Indenture. A
Unitholder may at any time tender his Units to the Trustee for redemption.
 
OWNERSHIP OF UNITS. Ownership of Units of a Series of the Trust will not be
evidenced by certificates unless a Unitholder or the Unitholder's registered
broker/dealer makes a written request to the Trustee. Units are transferable by
making a written request to the Trustee and, in the case of Units evidenced by a
certificate, by presenting and surrendering such certificate to the Trustee
properly endorsed or accompanied by a written instrument or instruments of
transfer which should be sent registered or certified mail for the protection of
the Unitholder. Unitholders must sign such written request, and such certificate
or transfer instrument, exactly as their names appear on the records of the
Trustee and on any certificate representing the Units to be transferred. Such
signatures must be guaranteed by a commercial bank or trust company, savings and
loan association or by a member firm of a national securities exchange.
 
Certificates will be issued in denominations of 100 Units or any number of Units
in excess thereof. The Trustee may require a Unitholder to pay a reasonable fee,
to be determined in the sole discretion of the Trustee, for each certificate
re-issued or transferred and to pay any governmental charge that may be imposed
in connection with each such transfer or exchange. The Trustee at the present
time does not intend to charge for the normal transfer or exchange of
certificates. Destroyed, stolen, mutilated or lost certificates will be replaced
upon delivery to the Trustee of satisfactory indemnity (generally amounting to
3% of the market value of the Units), affidavit of loss, if appropriate,
evidence of ownership and payment of expenses incurred. Any mutilated
certificate must be presented to the Trustee before a substitute certificate
will be issued.
 
                                      A-18

<PAGE>   44
 
CERTAIN LIMITATIONS. The death or incapacity of any Unitholder (or the
dissolution of the Sponsor) will not operate to terminate the Trust or any
Series thereof nor entitle the legal representatives or heirs of such Unitholder
to claim an accounting or to take any other action or proceeding in any court
for a partition or winding up of the Trust or any Series thereof.
 
No Unitholder shall have the right to vote except with respect to removal of the
Trustee or amendment and termination of the Trust or of the Series of which they
are a Unitholder. See 'Administration of the Trust Funds--Amendment' and
'Administration of the Trust Funds--Termination.' Unitholders shall have no
right to control the operation or administration of the Trust or any Series
thereof in any manner, except upon the vote of Unitholders representing 66 2/3%
of the Units of a Series outstanding for purposes of amendment, termination or
discharge of the Trustee, all as provided in the Indenture; however, no
Unitholder shall ever be under any liability to any third party for any action
taken by the Trustee, Evaluator or Sponsor.
 
EXPENSES AND CHARGES
 
INITIAL EXPENSES. All expenses and charges incurred prior to or in establishment
of the Trust, including the cost of the initial preparation, printing and
execution of the Indenture and the certificates, the initial fees of the Trustee
and the Evaluator, initial legal and auditing expenses, the cost of the
preparation and printing of this Prospectus and all other advertising and
selling expenses have been, or will be, paid by the Sponsor.
 
FEES. The Sponsor will receive no fee from the Trust for its services as such.
However, in the case of each Series of the Trust, the Sponsor does receive a
portfolio surveillance fee, which is earned for portfolio supervisory services,
at the rate set forth under 'Essential Information' for the appropriate Series
per $1,000 principal amount of Portfolio Obligations in such Series of the
Trust, computed monthly on the basis of the largest principal amount of
Portfolio Obligations in such Series of the Trust at any time during the
preceding month. The portfolio surveillance fee, which may not exceed the amount
set forth under 'Essential Information' may exceed the actual costs of providing
portfolio supervisory services for these Series of the Trust, but at no time
will the total amount the Sponsor receives for supervisory services rendered to
all unit investment trusts sponsored by the Sponsor in any calendar year exceed
the aggregate cost of providing such services in that year.
 
The Trustee will receive for its services under the Indenture the fee set forth
under 'Essential Information' for the appropriate Series per $1,000 principal
amount of Portfolio Obligations in such Series of the Trust, computed monthly on
the basis of the largest principal amount of Portfolio Obligations in such
Series of the Trust at any time during the preceding month. In no event will the
Trustee be paid less than $2,000 per Series in any one year.
 
For evaluation of Portfolio Obligations in a Series, the Evaluator shall receive
the fee set forth under 'Essential Information' for the appropriate Series per
$1,000 principal amount of Portfolio Obligations in such Series of the Trust,
computed monthly on the basis of the largest aggregate principal amount of
Portfolio Obligations in such Series of the Trust at any time during the
preceding month.
 
The Trustee's fees, Sponsor's portfolio surveillance fees and the Evaluator's
fees are payable monthly on or before each Distribution Date from the Interest
Account to the extent funds are available and thereafter from the Principal
Account. Any of such fees may be increased without approval of the Unitholders
in proportion to increases under the category 'All Services Less Rent of
Shelter' in the Consumer Price Index published by the United States Department
of Labor or if such category is no longer published, in a comparable category.
The Trustee also receives benefits to the extent that it holds funds on deposit
in various non-interest bearing accounts created under the Indenture.
 
                                      A-19

<PAGE>   45
 
OTHER CHARGES. The following additional charges are or may be incurred by the
Trust or any Series thereof as more fully described in the Indenture: (a) fees
of the Trustee for extraordinary services, (b) expenses of the Trustee
(including legal and auditing expenses, but not including any fees and expenses
charged by any agent for custody and safeguarding the Portfolio Obligations) and
of counsel designated by the Sponsor, (c) various governmental charges, (d)
expenses and costs of any action taken by the Trustee to protect the Trust or a
Series of the Trust and the rights and interests of the Unitholders thereof, (e)
indemnification of the Trustee for any loss, liability or expense incurred by it
in the administration of the Trust or any Series thereof without gross
negligence, bad faith, wilful malfeasance or wilful misconduct on its part or
reckless disregard of its obligations and duties, (f) indemnification of the
Sponsor for any losses, liabilities and expenses incurred in acting as Sponsor
under the Indenture without gross negligence, bad faith, wilful malfeasance or
wilful misconduct or reckless disregard of its obligations and duties, and (g)
expenditures incurred in contacting Unitholders upon termination of the Trust or
any Series thereof.
 
The fees and expenses set forth herein are payable out of each Series of the
Trust and when so paid by or owing to the Trustee are secured by a lien on such
Series. If the balances in the Interest and Principal Accounts are insufficient
to provide for amounts payable by any Series of the Trust, the Trustee has the
power to sell Portfolio Obligations from such Series to pay such amounts. To the
extent Portfolio Obligations are sold, the size of such Series of the Trust will
be reduced and the proportions of the types of Portfolio Obligations will
change. Such sales might be required at a time when Portfolio Obligations would
not otherwise be sold and might result in lower prices than might otherwise be
realized. Moreover, due to the minimum principal amount in which Portfolio
Obligations may be required to be sold, the proceeds of such sales may exceed
the amount necessary for the payment of such fees and expenses.
 
ADMINISTRATION OF THE TRUST FUNDS
 
RECORDS AND ACCOUNTS. In accordance with the Indenture, the Trustee shall keep
records of all transactions at its office. Such records shall include the name
and address of, and the number of Units held by, every Unitholder of each Series
of the Trust. Such books and records shall be open to inspection by any
Unitholder of such Series at all reasonable times during the usual business
hours. The Trustee shall make such annual or other reports as may from time to
time be required under any applicable state or Federal statute, rule or
regulation. The Trustee shall keep a certified copy or duplicate original of the
Indenture on file in its office available for inspection at all reasonable times
during usual business hours by any Unitholder, together with a current list of
the Securities held in each Series of the Trust. Pursuant to the Indenture, the
Trustee may employ one or more agents for the purpose of custody and
safeguarding of the Portfolio Obligations comprising the Trust Funds.
 
DISTRIBUTIONS FROM THE INTEREST, PRINCIPAL AND CAPITAL GAINS ACCOUNTS.
 
Ginnie Mae Series. The terms of the Ginnie Maes provide for payment to the
holders thereof (including each Series of the Trust) on the fifteenth day of
each month of amounts collected by or due to the issuers thereof with respect to
the underlying mortgages during the preceding month.
 
The Trustee will collect the interest due the Series on the Securities therein
as it becomes payable and credit such interest to a separate Interest Account
for such Series created by the Indenture.
 
Distributions will be made to each Unitholder of record of each Series of the
Trust on the appropriate Distribution Date (see 'Essential Information') and
will consist of an amount substantially equal to such Unitholder's pro rata
share of the cash balances, if any, in the Interest Account, the Principal
Account and any Capital Gains Account of such Series, computed as of the close
of business on the preceding Record Date.
 
                                      A-20

<PAGE>   46
 
U.S. Treasury Portfolio Series. Except for the Stripped Treasury Securities
included in each Series, the terms of the U.S. Treasury Obligations provide for
semi-annual payments of interest on the 15th day of the month. Interest received
by a Series of the U.S. Treasury Portfolio is credited by the Trustee to the
Interest Account for such Trust Fund. All other receipts are credited by the
Trustee to a separate Principal Account for such Trust Fund. Since interest on
the U.S. Treasury Obligations in U.S. Treasury Portfolio Series is payable in
semi-annual installments, and distributions of income are made to Unitholders at
different intervals from receipt of interest, the interest accruing to U.S.
Treasury Portfolio Series may not be equal to the amount of money received and
available for distribution from the Interest Account. Therefore, on each
Distribution Date the amount of interest actually deposited in the Interest
Account of U.S. Treasury Portfolio Series and available for distribution may be
slightly more or less than the interest distribution made. In order to eliminate
fluctuations in interest distributions resulting from such variances, the
Trustee is authorized by the Indenture to advance such amounts as may be
necessary to provide interest distributions of approximately equal amounts. The
Trustee will be reimbursed, without interest, for any such advances from funds
available in the Interest Account for U.S. Treasury Portfolio Series.
 
Stripped Treasury Securities are sold at a deep discount because the buyer of
those securities obtains only the right to receive a future fixed payment on the
security and not any rights to periodic interest payments thereon. Purchasers of
these Securities acquire, in effect, discount obligations that are economically
identical to the 'zero-coupon bonds' that have been issued by corporations. Zero
coupon bonds are debt obligations which do not make any periodic payments of
interest prior to maturity and accordingly are issued at a deep discount.
 
Under generally accepted accounting principles, a holder of a security purchased
at a discount normally must report as an item of income for financial accounting
purposes the portion of the discount attributable to the applicable reporting
period. The calculation of this attributable income would be made on the
'interest' method which generally will result in a lesser amount of includible
income in earlier periods and a correspondingly larger amount in later periods.
For Federal income tax purposes, the inclusion will be on a basis that reflects
the effective compounding of accrued but unpaid interest effectively represented
by the discount. Although this treatment is similar to the 'interest' method
described above, the 'interest' method may differ to the extent that generally
accepted accounting principles permit or require the inclusion of interest on
the basis of a compounding period other than the semi-annual period. See 'Tax
Status.'
 
The Trustee will distribute on each Distribution Date or shortly thereafter, to
each Unitholder of record of a Series of the U.S. Treasury Portfolio on the
preceding Record Date, an amount substantially equal to such holder's pro rata
share of the cash balance, if any, in the Principal Account of the related U.S.
Treasury Portfolio computed as of the close of business on the preceding Record
Date. However, no distribution will be required if the balance in the Principal
Account is less than $1.00 per 100 Units. Notwithstanding the foregoing, the
Trustee will make a distribution to Unitholders of all principal relating to
maturing Treasury Obligations within seven business days of the date of each
such maturity.
 
General. Distributions for an IRA, Keogh or other tax-deferred retirement plan
will not be sent to the individual Unitholder. These distributions will go
directly to the custodian of the plan to avoid the penalties associated with
premature withdrawals from such accounts. See 'Retirement Plans.'
 
All funds collected or received will be held by the Trustee in trust, without
interest to Unitholders, as part of the appropriate Series of the Trust or the
Reserve Accounts referred to below until required to be disbursed in accordance
with the provisions of the Indenture. Such funds will be segregated on the trust
ledger of the Trustee so long as such practice preserves a valid preference of
Unitholders of such Series of the Trust under the bankruptcy laws of the United
States, or if such preference is not preserved, the Trustee shall
 
                                      A-21

<PAGE>   47
 
handle such funds in such other manner as shall constitute the segregation and
holding thereof in trust within the meaning of the Investment Company Act of
1940, as the same may be from time to time amended. To the extent permitted by
the Indenture and applicable banking regulations, such funds are available for
use by the Trustee pursuant to normal banking procedures.
 
The first distribution, if any, for persons who purchase Units between a Record
Date and a Distribution Date will be made on the second Distribution Date
following their purchase of Units.
 
The Trustee is authorized by the Indenture to withdraw from the Principal and/or
Interest Accounts of each Series such amounts as it deems necessary to establish
a reserve for any taxes or other governmental charges that may be payable out of
such Series of the Trust, which amounts will be deposited in a separate Reserve
Account. If the Trustee determines that the amount in the Reserve Account is
greater than the amount necessary for payment of any taxes or other governmental
charges, it will promptly deposit the excess back into the Account from which it
was withdrawn.
 
PORTFOLIO SUPERVISION. The Indenture permits the Sponsor to direct the Trustee
to dispose of any Portfolio Obligation in a Series of the Trust upon the
happening of any of the following events:
 
          1. Default in the payment of principal or interest on any of the
     Portfolio Obligations when due and payable,
 
          2. Institution of legal proceedings seeking to restrain or enjoin the
     payment of any of the Portfolio Obligations or attacking their validity,
 
          3. A breach of covenant or warranty which could adversely affect the
     payment of debt service on the Portfolio Obligations,
 
          4. Default in the payment of principal or interest on any other
     outstanding obligation guaranteed or backed by the full faith and credit of
     the United States of America,
 
          5. A decline in market price to such an extent, or such other market
     credit or other factors exist, as in the opinion of the Sponsor would make
     retention of any of the Portfolio Obligations detrimental to the Trust or
     any Series thereof and to the interests of the Unitholders,
 
          6. An offer is made to refund or refinance any of the Portfolio
     Obligations in the Trust Funds, or
 
          7. Termination of the Trust or any Series thereof.
 
The Trustee shall also sell any Portfolio Obligation in a Series of the Trust if
there is a default in the payment of principal and interest on such Portfolio
Obligation and no provision for payment is made therefore and the Sponsor fails
to instruct the Trustee to sell or hold such Portfolio Obligation within thirty
days after notice to the Sponsor from the Trustee of such default. The Trustee
shall not be liable for any depreciation or loss by reason of any sale of
Portfolio Obligations or by reason of the failure of the Sponsor to give
directions to the Trustee.
 
Amounts received by a Series of the Trust upon the sale of any Portfolio
Obligation under the conditions set forth above will be deposited in the
Principal Account, Interest Account or Capital Gains Account for such Series, as
appropriate, when received and pursuant to the Sponsor's instructions will be
distributed by the Trustee on the next Distribution Date to Unitholders of
record of such Series on the Record Date prior to such Distribution Date.
 
REPORTS TO UNITHOLDERS. With each distribution, the Trustee will furnish or
cause to be furnished to the Unitholders of such Series a statement of the
amount of interest and other receipts, if any, distributed, expressed in each
case as a dollar amount per Unit.
 
                                      A-22

<PAGE>   48
 
The accounts of each Series of the Trust are required to be audited annually, at
the Trust's expense, by independent certified public accountants designated by
the Sponsor, unless the Trustee determines that such an audit would not be in
the best interest of the Unitholders. The accountants' report will be furnished
by the Trustee to any Unitholder of such Series upon written request.
 
Within a reasonable period of time after the end of each calendar year, the
Trustee will furnish to each person who at any time during such calendar year
was a Unitholder of record of a Series of the Trust a statement setting forth
for the applicable Series:
 
1. As to the Interest Account:
 
          (a) the amount of interest received on the Portfolio Obligations,
     including amounts received as a portion of the proceeds of any disposition
     of Portfolio Obligations;
 
          (b) the amount paid from the Interest Account representing accrued
     interest for any Units redeemed and amounts paid or reserved for purchases
     of substitute Portfolio Obligations;
 
          (c) the deductions from the Interest Account for applicable taxes or
     other governmental charges, if any, and fees and expenses of the Trustee
     (including auditing fees), the Sponsor, the Evaluator and counsel;
 
          (d) the deductions from the Interest Account for payment into the
     Reserve Account; and
 
          (e) the net amount remaining after such payments and deductions
     expressed both as a total dollar amount and as a dollar amount per 100
     Units outstanding on the last business day of such calendar year.
 
2. As to the Principal Account:
 
          (a) the dates of the sale, maturity, liquidation or redemption of any
     of the Portfolio Obligations and the net proceeds received therefrom,
     excluding any portion credited to the Interest Account;
 
          (b) the amount paid from the Principal Account representing the
     principal of any Units redeemed and amounts paid or reserved for purchases
     of substitute Portfolio Obligations;
 
          (c) the deductions from the Principal Account, if any, for payment of
     applicable taxes or other governmental charges, fees and expenses of the
     Trustee (including auditing fees), the Sponsor, the Evaluator and counsel;
 
          (d) the deductions from the Principal Account for payment into the
     Reserve Account; and
 
          (e) the net amount remaining after such payments and deductions
     expressed both as a total dollar amount and as a dollar amount per 100
     Units outstanding on the last business day of such calendar year.
 
3. The following information:
 
          (a) a list of the Portfolio Obligations, as appropriate, as of the
     last business day of such calendar year grouped by coupon and maturity
     range;
 
          (b) the number of Units outstanding on the last business day of such
     calendar year;
 
          (c) the Unit Value (as defined in the Indenture) based on the last
     Trust evaluation made during such calendar year; and
 
          (d) the amounts actually distributed during such calendar year from
     the Interest, Principal and Capital Gains Accounts, separately stated,
     expressed both as total dollar amounts and as dollar amounts per 100 Units
     outstanding on the Record Dates for such distributions.
 
AMENDMENT. The Indenture may be amended by the Trustee and the Sponsor without
the consent of Unitholders (a) to cure any ambiguity or to correct or supplement
any provision thereof which may be defective or inconsistent, (b) to change any
provision thereof as may be required by the Securities and
 
                                      A-23

<PAGE>   49
 
Exchange Commission or any successor governmental agency, and (c) to make such
other provisions as shall not adversely affect the interest of the Unitholders
(as determined in good faith by the Sponsor and the Trustee); provided, however,
that the Indenture may also be amended with respect to any Series by the Sponsor
and the Trustee (or the performance of any of the provisions of the Indenture
may be waived) with the consent of holders of Units representing 66 2/3% of the
Units then outstanding of such Series for the purposes of adding any provisions
to or changing in any manner or eliminating any of the provisions of the
Indenture or of modifying in any manner the rights of Unitholders thereof.
However, the Indenture may not be amended, without the consent of the holders of
all Units of a Series then outstanding, so as (1) to permit, except in
accordance with the terms and conditions of the Indenture, the acquisition of
any Portfolio Obligations other than those specified in the Indenture, or (2) to
reduce the aforesaid percentage of Units of a Series the holders of which are
required to consent to certain of such amendments and may not be amended so as
to reduce the interest in such Series represented by Units without the consent
of the holder of such Units. The Trustee shall promptly notify Unitholders of
the substance of any such amendment.
 
TERMINATION. The Indenture provides that a Series of the Trust will terminate
shortly after the maturity, redemption, sale or other disposition of the last of
the Portfolio Obligations held in such Series. See 'Essential Information' for
each Series. If the value of a Series of the Trust as shown by an evaluation is
less than forty percent (40%) of the par value of the Portfolio Obligations
deposited in such Series, the Trustee shall, if directed by the Sponsor in
writing, terminate such Series of the Trust. The Trust or any Series thereof may
also be terminated at any time by the written consent of holders of Units
representing 66 2/3% of the Units then outstanding of such Series.
 
Upon termination, the Trustee will sell the Portfolio Obligations then held in
the appropriate Series of the Trust and credit the moneys derived from such sale
to the Principal, Capital Gains and Interest Accounts thereof. The Trustee will
then, after deduction of any fees and expenses of such Series and payment into
the Reserve Account of any amount required for taxes or other governmental
charges that may be payable by such series of the Trust, distribute to each
Unitholder of such Series, only upon surrender for cancellation of his
certificate, if issued, after due notice of such termination, such Unitholder's
pro rata share in the Interest, Capital Gains and Principal Accounts. The sale
of Portfolio Obligations in a Series of the Trust upon termination may result in
a lower amount than might otherwise be realized if such sale were not required
at such time. For this reason, among others, the amount realized by a Unitholder
upon termination may be less than the principal amount of Portfolio Obligations
represented by the Units held by such Unitholder.
 
RESIGNATION, REMOVAL AND LIABILITY
 
REGARDING THE TRUSTEE. The Trustee shall be under no liability for any action
taken in good faith in reliance on prima facie properly executed documents or
for the disposition of moneys or Securities from any Series of the Trust, nor
shall the Trustee be liable or responsible in any way for depreciation or loss
incurred by reason of the disposition of any Portfolio Obligations by the
Trustee. However, the Trustee shall be liable for wilful malfeasance, wilful
misconduct, bad faith or gross negligence in the performance of its duties or by
reason of its reckless disregard of its obligations and duties under the
Indenture. In the event of a failure of the Sponsor to act, the Trustee may act
under the Indenture and shall not be liable for any action taken by it in good
faith. The Trustee shall not be personally liable for any taxes or other
governmental charges imposed upon the Trust or any Series thereof or in respect
of the Portfolio Obligations or the interest thereon. The Indenture also
contains other customary provisions limiting the liability of the Trustee and
providing for the indemnification of the Trustee for any loss or claim accruing
to it without gross negligence,
 
                                      A-24

<PAGE>   50
 
bad faith, wilful misconduct, wilful malfeasance or reckless disregard of its
duties and obligations under the Indenture on its part.
 
The Trustee or any successor may resign by executing an instrument in writing,
filing the same with the Sponsor and mailing a copy of such notice or
resignation to all Unitholders then of record. Upon receiving such notice the
Sponsor will use its best efforts to appoint a successor Trustee promptly. If
the Trustee becomes incapable of acting or becomes bankrupt or its affairs are
taken over by public authorities, the Sponsor may remove the Trustee and appoint
a successor as provided in the Indenture. If within 30 days of the resignation
of a Trustee no successor has been appointed or, if appointed, has not accepted
the appointment, the retiring Trustee may apply to a court of competent
jurisdiction for the appointment of a successor. The resignation or removal of a
Trustee becomes effective only when the successor Trustee accepts its
appointment as such or when a court of competent jurisdiction appoints a
successor Trustee.
 
REGARDING THE SPONSOR. The Sponsor shall be under no liability to the Trust or
to Unitholders for taking any action or for refraining from any action in good
faith or for errors in judgment, nor shall the Sponsor be liable or responsible
in any way for depreciation or loss incurred by reason of the disposition of any
Portfolio Obligations. The Sponsor will, however, be liable for its own wilful
malfeasance, wilful misconduct, bad faith, gross negligence or reckless
disregard of its duties and obligations under the Indenture.
 
If at any time the Sponsor shall resign under the Indenture or shall fail or be
incapable of performing its duties thereunder or shall become bankrupt or its
affairs are taken over by public authorities, the Indenture directs the Trustee
to either (1) appoint a successor Sponsor or Sponsors at rates of compensation
deemed reasonable by the Trustee not exceeding amounts prescribed by the
Securities and Exchange Commission, or (2) continue to act as Sponsor itself
without terminating the Indenture.
 
REGARDING THE EVALUATOR. The Trustee, Sponsor and Unitholders may rely on any
evaluation furnished by the Evaluator and shall have no responsibility for the
accuracy thereof. Determinations by the Evaluator under the indenture shall be
made in good faith upon the basis of the best information available to it,
provided, however, that the Evaluator shall be under no liability to the
Trustee, Sponsor or Unitholders for errors in judgment. The Evaluator shall,
however, be liable for its own wilful malfeasance, bad faith, gross negligence
or reckless disregard of its obligations and duties under the Indenture.
 
The Evaluator may resign or may be removed by the Sponsor and the Trustee, and
the Sponsor and the Trustee are to use their best efforts to appoint a
satisfactory successor. Such resignation or removal shall become effective upon
the acceptance of appointment by the successor Evaluator. If upon resignation of
the Evaluator no successor accepts appointment within thirty days after notice
of resignation, the Evaluator may apply to a court of competent jurisdiction for
the appointment of a successor.
 
MISCELLANEOUS
 
SPONSOR. The Sponsor, Kemper Unit Investment Trusts, with an office at 77 West
Wacker Drive, 5th Floor, Chicago, Illinois 60601 (800)621-5024, is a service of
Kemper Securities, Inc., which is a wholly owned subsidiary of Kemper Financial
Companies, Inc. which, in turn, is a wholly-owned subsidiary of Kemper
Corporation. The Sponsor will act as underwriter of any other unit investment
trust products developed by the Sponsor in the future. As of April 30, 1993, the
total stockholder's equity of Kemper Securities, Inc. was $426,125,017
(unaudited).
 
The foregoing information with regard to the Sponsor relates to the Sponsor only
and not to the Trust. Such information is included in this Prospectus only for
the purpose of informing investors as to the financial responsibility of the
Sponsor and its ability to carry out its contractual obligations shown herein.
More comprehensive financial information can be obtained from the Sponsor upon
request.
 
                                      A-25

<PAGE>   51
 
TRUSTEE. The Trustee, Investors Fiduciary Trust Company, is a trust company
specializing in investment related services, organized and existing under the
laws of Missouri, having its trust office at 127 West 10th Street, Kansas City,
Missouri 64105. The Trustee is subject to supervision and examination by the
Division of Finance of the State of Missouri and the Federal Deposit Insurance
Corporation. Investors Fiduciary Trust Company is jointly owned by DST Systems,
Inc. and Kemper Financial Services, Inc., an affiliate of the Sponsor.
 
The Trustee, whose duties are ministerial in nature, has not participated in
selecting any of the Securities in the Trust Funds. For information relating to
the responsibilities of the Trustee under the Indenture, reference is made to
the material set forth under 'Administration of the Trust Funds.'
 
LEGAL OPINION. The legality of the Units offered hereby and certain matters
relating to Federal tax law have been passed upon by Chapman and Cutler, 111
West Monroe Street, Chicago, Illinois 60603, as counsel for the Sponsor.
 
INDEPENDENT CERTIFIED PUBLIC ACCOUNTANTS
 
The statements of condition, including the portfolios, of the Kemper Defined
Funds Series 5 appearing in this Prospectus and Registration Statement have been
audited by Grant Thornton, independent certified public accountants, as set
forth in their report thereon appearing elsewhere herein, and are included in
reliance upon such report and upon the authority of such firm as experts in
accounting and auditing.
 
                                      A-26
<PAGE>   52
 
<TABLE>
<CAPTION>
                   CONTENTS                       PAGE
                                                  ----
<S>                                               <C>
ESSENTIAL INFORMATION..........................      2
THE TRUST FUNDS................................      4
  General......................................      4
  GNMA Portfolio Series........................      6
  U.S. Treasury Portfolio Series...............     11
PORTFOLIOS.....................................     12
NOTES TO PORTFOLIOS............................     13
REPORT OF INDEPENDENT CERTIFIED PUBLIC
  ACCOUNTANTS..................................     14
STATEMENT OF CONDITIONS........................     15
ESTIMATED CASH FLOWS TO UNITHOLDERS............     16
RATING OF UNITS................................    A-1
PORTFOLIO SELECTION............................    A-1
THE UNITS......................................    A-2
ESTIMATED CURRENT RETURN AND ESTIMATED
  LONG-TERM RETURN.............................    A-2
PUBLIC OFFERING OF UNITS.......................    A-3
  Public Offering Price........................    A-3
  Initial Public Distribution..................    A-5
  Secondary Market.............................    A-6
  Profits of Sponsor...........................    A-6
TAX STATUS.....................................    A-8
RETIREMENT PLANS...............................   A-13
REINVESTMENT PROGRAM...........................   A-15
REDEMPTION.....................................   A-16
  Right of Redemption..........................   A-16
  Computation of Redemption Value..............   A-17
  Postponement of Redemption...................   A-17
COMPARISON OF PUBLIC OFFERING PRICE AND
  REDEMPTION VALUE.............................   A-18
RIGHTS OF UNITHOLDERS..........................   A-18
  Unitholders..................................   A-18
  Ownership of Units...........................   A-18
  Certain Limitations..........................   A-19
EXPENSES AND CHARGES...........................   A-19
  Initial Expenses.............................   A-19
  Fees.........................................   A-19
  Other Charges................................   A-20
ADMINISTRATION OF THE TRUST FUNDS..............   A-20
  Records and Accounts.........................   A-20
  Distributions from the Interest, Principal
    and Capital Gains Accounts.................   A-20
  Portfolio Supervision........................   A-22
  Reports to Unitholders.......................   A-22
  Amendment....................................   A-23
  Termination..................................   A-24
RESIGNATION, REMOVAL AND LIABILITY.............   A-24
  Regarding the Trustee........................   A-24
  Regarding the Sponsor........................   A-25
  Regarding the Evaluator......................   A-25
MISCELLANEOUS..................................   A-25
  Sponsor......................................   A-25
  Trustee......................................   A-26
  Legal Opinion................................   A-26
INDEPENDENT CERTIFIED PUBLIC ACCOUNTANTS.......   A-26
</TABLE>
 
- --------------------------------------------------------------------------
 
THIS PROSPECTUS DOES NOT CONTAIN ALL
OF THE INFORMATION SET FORTH IN THE
REGISTRATION STATEMENT AND EXHIBITS
RELATING THERETO, FILED WITH THE
SECURITIES AND EXCHANGE COMMISSION,
WASHINGTON, D.C. UNDER THE
SECURITIES ACT OF 1933 AND THE
INVESTMENT COMPANY ACT OF 1940, AND
TO WHICH REFERENCE IS MADE.
- --------------------------------------------------------------------------
 
NO PERSON IS AUTHORIZED TO GIVE ANY
INFORMATION OR TO MAKE ANY
REPRESENTATIONS NOT CONTAINED IN
THIS PROSPECTUS AND ANY INFORMATION
OR REPRESENTATION NOT CONTAINED
HEREIN MUST NOT BE RELIED UPON AS
HAVING BEEN AUTHORIZED BY THE TRUST,
THE TRUSTEE, OR THE SPONSOR. THE
TRUST IS REGISTERED AS A UNIT
INVESTMENT TRUST UNDER THE
INVESTMENT COMPANY ACT OF 1940. SUCH
REGISTRATION DOES NOT IMPLY THAT THE
TRUST OR THE UNITS HAVE BEEN
GUARANTEED, SPONSORED, RECOMMENDED
OR APPROVED BY THE UNITED STATES OR
ANY STATE OR ANY AGENCY OR OFFICER
THEREOF.
 
- --------------------------------------------------------------------------
 
THIS PROSPECTUS DOES NOT CONSTITUTE
AN OFFER TO SELL, OR A SOLICITATION
OF AN OFFER TO BUY, SECURITIES IN
ANY STATE TO ANY PERSON TO WHOM IT
IS NOT LAWFUL TO MAKE SUCH OFFER IN
SUCH STATE.
<PAGE>   53
 
- -------------------------------------------------------------------------
 -----------------------------------------------------------------------
                  KEMPER
                  DEFINED
                  FUNDS.
 
                GOVERNMENT
 -----------------------------------------------------------------------
- -------------------------------------------------------------------------
       -------------------------------------------------------------------------
           ---------------------------------------------------------------------
 
                                                   PROSPECTUS
 
           ---------------------------------------------------------------------
      --------------------------------------------------------------------------
 
GNMA PORTFOLIO
 
SERIES 1 - INTERMEDIATE
 
U.S. TREASURY PORTFOLIO
 
SERIES 1 - SHORT/INTERMEDIATE
 
U.S. TREASURY PORTFOLIO
 
SERIES 2 - INTERMEDIATE
 
                               SEPTEMBER 9, 1993
 
  ------------------------------------------------------------------------------
                         KEMPER UNIT INVESTMENT TRUSTS
  ------------------------------------------------------------------------------
<PAGE>   54
                       CONTENTS OF REGISTRATION STATEMENT


This Registration Statement comprises the following papers and documents:

             The facing sheet

             The Cross-Reference Sheet

             The Prospectus

             The signatures

The following exhibits:

1.1          Form of Trust Indenture and Agreement for Series 15 (to be filed
             by amendment).

3.1          Opinion of counsel to the Sponsor as to legality of the securities
             being registered including a consent to the use of its name under
             the headings "Tax Status" and "Legal Opinions" in the Prospectus
             and opinion of counsel as to Federal income tax status of the
             securities being registered and certain Missouri tax matters (to
             be filed by amendment).

4.1          Consent of Muller Data Corporation (to be filed by amendment).

4.2          Consent of Grant Thornton (to be filed by amendment).





                                      S-1

<PAGE>   55

                                   SIGNATURES

          Pursuant to the requirements of the Securities Act of 1933, the
Registrant, Kemper Defined Funds Series 15 has duly caused this Registration
Statement to be signed on its behalf by the undersigned thereunto duly
authorized, in the City of Chicago, and State of Illinois, on the 9th day of
February, 1994.

                                        KEMPER DEFINED FUNDS SERIES 15
                                           Registrant

                                        By:  KEMPER UNIT INVESTMENT TRUSTS
                                           Depositor

                                        By:   /s/  C. Perry Moore
                                                   C. Perry Moore

          Pursuant to the requirements of the Securities Act of 1933, this
Registration Statement has been signed below on February 9, 1994 by the
following persons, who constitute a majority of the Board of Directors of
Kemper Securities, Inc.

<TABLE>
<CAPTION>
               Signature                                           Title
               ---------                                           -----
   <S>                                                 <C>
      JAMES R. BORIS                                   Chairman and Chief Executive Officer
- ---------------------------                                                                
      James R. Boris

     DONALD F. ELLER                                   Senior Executive Vice President and Director
- -------------------------                                                                          
     Donald F. Eller

    STANLEY R. FALLIS                                  Senior Executive Vice President, Chief
- ---------------------------                              Financial Officer and Director                                    
    Stanley R. Fallis                                  

     FRANK V. GEREMIA                                  Senior Executive Vice President and Director
- --------------------------                                                                         
     Frank V. Geremia

     DAVID B. MATHIS                                   Director
- ---------------------------                                    
     David B. Mathis

    ROBERT T. JACKSON                                  Director
- --------------------------                                     
     Robert T. Jackson

      JAY B. WALTERS                                   Senior Executive Vice President and Director
- ---------------------------                                                                         
      Jay B. Walters

   FREDERICK C. HOSKEN                                 Senior Executive Vice President and Director
- --------------------------                                                                         
   Frederick C. Hosken

   CHARLES M. KIERSCHT                                 Director
- --------------------------                                     
   Charles M. Kierscht

    ARTHUR J. McGIVERN                                 Director
- ---------------------------                                    
    Arthur J. McGivern

</TABLE>
                                        /s/     C. Perry Moore
                                                C. Perry Moore

          C. Perry Moore signs this documents pursuant to Power of Attorney
filed with the Securities and Exchange Commission with (a) Amendment No. 1 to
the Registration Statement on Form S-6 for Kemper Tax-Exempt Insured Income
Trust, Series A-70 and Multi-State Series 28 and Kemper Tax-Exempt Income
Trust, Multi-State Series 42 (Registration No. 33-35425), and (b) Amendment No.
1 to the Registration Statement on Form S-6 for Kemper Tax-Exempt Insured
Income Trust, Series A-72 and Multi-State Series 30 (Registration No.
33-37178), and (c) Amendment No. 1 to the Registration Statement on Form S-6
for Kemper Tax-Exempt Insured Income Trust, Multi-State Series 51 (Registration
No. 33-48398).





                                      S-2


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