HEARTLAND GROUP INC
485BPOS, 1997-04-30
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<PAGE>   1
    As filed with the Securities and Exchange Commission on April 30, 1997
                                                      Registration Nos. 33-11371
                                                                        811-4982
================================================================================
                      SECURITIES AND EXCHANGE COMMISSION
                            Washington, D.C. 20549

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

                                  FORM N-1A
           REGISTRATION STATEMENT UNDER THE SECURITIES ACT OF 1933

                      Pre-Effective Amendment No.                            [ ]
                                                  -------                      
                    Post-Effective Amendment No.     31                      [X]
                                                  -------                      
                                    and/or

                       REGISTRATION STATEMENT UNDER THE
                        INVESTMENT COMPANY ACT OF 1940                       [ ]
  
                             Amendment No.   33                              [X]
                                           -------  
                       (Check Appropriate box or boxes)

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

                            HEARTLAND GROUP, INC.
              (Exact name of registrant as specified in charter)

   790 NORTH MILWAUKEE STREET
    MILWAUKEE, WISCONSIN                                      53202
 (Address of Principal Offices)                             (Zip Code)

       Registrant's Telephone Number, including Area Code (414)347-7777

                       WILLIAM J. NASGOVITZ, President
                          790 NORTH MILWAUKEE STREET
                          MILWAUKEE, WISCONSIN 53202
                   (name and Address of Agent for Service)

                                   Copy to:
                           CONRAD G. GOODKIND, ESQ.
                               Quarles & Brady
                          411 East Wisconsin Avenue
                             Milwaukee, WI 53202

         It is proposed that this filing will become effective (check
         appropriate box):

         [ ] immediately upon filing pursuant to paragraph (b)
         [X] on May 1, 1997 pursuant to paragraph (b)
         [ ] 60 days after filing pursuant to paragraph (a)(1)
         [ ] on (date) pursuant to paragraph (a)(1)
         [ ] 75 days after filing pursuant to paragraph (a)(2)
         [ ] on (date) pursuant to paragraph (a)(2) of rule 485

         If appropriate, check the following box:
         [ ] this post-effective amendment designates a new effective date for a
             previously filed post-effective amendment

*Registrant has elected to register an indefinite number of shares of Common
Stock, $0.01 par value, pursuant to Rule 24f-2 under the Investment Company Act
of 1940.  The Registrant's 24f-2 Notice for the year ended December 31, 1996
was filed on February 28, 1997.

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



<PAGE>   2
                             HEARTLAND GROUP, INC.

                                   FORM N-1A

                             CROSS-REFERENCE SHEET

                       TO POST-EFFECTIVE AMENDMENT NO. 31
                   _________________________________________




Form N-1A
Item No.                               Prospectus Heading
- --------                               ------------------

           PART A

1.  Cover Page ......................  Cover Page
                                       
2.  Synopsis ........................  Fund Expenses
                                       
                                       
3.  Condensed Financial                
    Information .....................  Financial Highlights
                                       
4.  General Description of             
    Registrant ......................  Description of Fund Shares; 
                                       Investment Objectives and Policies

5.  Management of the Fund ..........  The Fund and the Heartland Organization;
                                       How to Buy Shares; Net Asset            
                                       Value Calculation; Portfolio Transactions

5A. Management's Discussion
    of Fund Performance .............  Not applicable.  See Annual Report


6.  Capital Stock and Other
    Securities ......................  Description of Fund Shares; Dividends, 
                                       Distributions and Taxes; Shareholder 
                                       Services

7.  Purchase of Securities Being
    Offered .........................  How to Buy Shares; Net Asset Value 
                                       Calculation;  How to Redeem Shares

8.  Redemption or Repurchase ........  How to Redeem Shares

9.  Pending Legal Proceedings .......  None


<PAGE>   3



     PART B


10. Cover Page ......................  Cover Page

11. Table of Contents ...............  Cover Page

12. General Information and
    History .........................  Introduction to the Heartland Funds

13. Investment Objectives and
    Policies ........................  Investment Objective and Policies; 
                                       Investment  Restrictions; Appendix A - 
                                       Securities Ratings

14. Management of the Fund ..........  Management


15. Control Persons and Principal
    Holders of Securities ...........  Control Persons and Principal Holders of
                                       Securities

16. Investment Advisory and 
    Other Services ..................  The Investment Advisor

17. Brokerage Allocation ............  Portfolio Transactions


18. Capital Stock and Other
    Securities ......................  Description of Shares

19. Purchase, Redemption and
    Pricing of Securities
    Being Offered ...................  Determination of Net Asset Value Per 
                                       Share

20. Tax Status ......................  Tax Status

21. Underwriters ....................  Distribution of Shares

22. Calculation of Performance
    Data ............................  Performance Information

23. Financial Statements ............  Financial Statements


                                     -3-

<PAGE>   4

                       HEARTLAND WISCONSIN TAX FREE FUND

                                   Prospectus

   
                                  May 1, 1997
    
_____________________________________________________________________________

INVESTMENT SUMMARY

The Heartland Wisconsin Tax Free Fund's investment objective is to provide
investors with a high level of current income that is exempt from federal
income tax and Wisconsin personal income tax.

   
The Heartland Wisconsin Tax Free Fund (the "Fund") is a separate
non-diversified mutual fund portfolio of Heartland Group, Inc. ("Heartland").
This Prospectus contains information you should know about the Fund before you
invest.  Please keep it for reference.  A Statement of Additional Information
for the Fund (dated May 1, 1997) has been filed with the Securities and
Exchange Commission and is incorporated by reference into this Prospectus.  It
is available at no charge by calling the Fund's investment advisor and
distributor, Heartland Advisors, Inc. ("Heartland Advisors"), at 1-800-432-7856
or (414) 289-7000.
    



LIKE ALL MUTUAL FUNDS, 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.
______________________________________________________________________________

SHARES OF THE FUND ARE NOT OBLIGATIONS, DEPOSITS OR ACCOUNTS OF, OR ENDORSED OR
GUARANTEED BY, ANY BANKING INSTITUTION, ARE NOT INSURED OR GUARANTEED BY THE
FDIC OR ANY OTHER GOVERNMENTAL AGENCY AND INVOLVE RISK, INCLUDING THE POSSIBLE
LOSS OF PRINCIPAL.




                              P R O S P E C T U S
                                    ________

                                       1

<PAGE>   5


TABLE OF CONTENTS



Fund Expenses .............................................  3
                  
Financial Highlights ......................................  4
                  
Investment Objective and Policies .........................  6
                  
How to Buy Shares ......................................... 16
                                                             
   
Shareholder Services ...................................... 19
    
                                                             
Dividends, Distributions and Taxes ........................ 21
                                                             
   
The Fund and the Heartland Organization ................... 23
    
                                                             
Net Asset Value Calculation ............................... 24
                                                             
Description of Fund Shares ................................ 24
                                                             
   
Portfolio Transactions .................................... 26
    
                                                             
   
Performance Information ................................... 27
    
                  
   
How to Redeem Shares ...................................... 28
    





<PAGE>   6



FUND EXPENSES

The expense summary format below was developed for use by all mutual funds to
help you make your investment decisions.  Of course, you should consider this
expense information along with other important information, including the
Fund's investment objective and performance.


SHAREHOLDER TRANSACTION EXPENSES
   Maximum sales load imposed on purchases     None
   Sales load imposed on reinvested dividends  None
   Redemption fees                             None(1)
   Exchange fees                               None

   
ANNUAL FUND OPERATING EXPENSES
(as a percentage of average net assets)
   Management fees                             .65%
   Rule 12b-1 distribution plan fees           None
   Other expenses                              .16%
    

   
   TOTAL FUND OPERATING EXPENSES               .81%(2)
    


   
(1)  The Agent charges a wire fee for the return of redemption proceeds
requested by wire transfer.  The fee is currently $12.
    

   
(2)  The Fund has entered into arrangements with its custodian and transfer
agent whereby interest earned on uninvested cash balances is used to reduce
custodian and transfer agent expenses.  Giving effect to this reduction, the
total fund operating expenses were .80%.
    

EXAMPLE

You would pay the following expenses on a $1,000 investment, assuming:  (1) 5%
annual rate of return; and (2) redemption at the end of each time period in the
Fund:


   
<TABLE>
    <S>                                     <C>
    One year                                $8
    Three years                             $26
    Five years                              $45
    Ten years                               $100
</TABLE>
    


The purpose of this expense information is to assist you in understanding the
various costs and expenses that you would bear directly or indirectly as an
investor in the Fund.  More detailed information concerning these expenses is
set forth in the sections of this Prospectus entitled "How To Buy Shares" and
"The Fund and The Heartland Organization."

THE ABOVE EXAMPLES SHOULD NOT BE CONSIDERED A REPRESENTATION OF FUTURE
EXPENSES.  ACTUAL EXPENSES MAY BE GREATER OR LESS THAN THOSE SHOWN.



<PAGE>   7


FINANCIAL HIGHLIGHTS

   
The following Financial Highlights table for the Fund has been examined by
Arthur Andersen LLP, independent public accountants, whose report on the
financial statements of the Fund for the fiscal year ended December 31, 1996 is
included in the Fund's Annual Report to Shareholders for such period and
incorporated by reference into the Statement of Additional Information.  The
table should be read in conjunction with the audited financial statements and
related notes appearing in the Annual Report.  Additional information about the
Fund's performance is contained in the Annual Report, which may be obtained
without charge by writing or calling Heartland Advisors.
    



<PAGE>   8

   
<TABLE>
<CAPTION>
                                                                 Fiscal year ended December 31
                                                                                                                      4/3/92(1)
                                                    1996               1995               1994              1993     to 12/31/92
                                                    ----               ----               ----              ----     -----------
<S>                                           <C>                <C>                <C>                <C>           <C>
PER SHARE DATA:
Net Asset Value, Beginning of Period          $      10.30       $       9.21       $      10.38       $      9.85   $      9.70
Income from Investment Operations
Net investment income                                  .51                .51                .51               .49           .37
Net realized and unrealized gains (losses)
on investments                                        (.14)              1.09              (1.17)              .55           .15
                                              ------------       ------------       ------------       -----------   -----------
Total income from investment operations                .37               1.60               (.66)             1.04           .52
Less Distributions from:
Net investment income                                 (.51)              (.51)              (.51)             (.49)         (.37)
Net realized gains on investments                        -                  -                  -              (.02)            -
                                              ------------       ------------       ------------       -----------   -----------
Total distributions                                   (.51)              (.51)              (.51)             (.51)         (.37)
Net asset value, end of period                $      10.16       $      10.30       $       9.21       $     10.38   $      9.85
Total Return(2)                                       3.81%             17.78%             (6.49%)           10.80%         7.32%(3)


RATIOS/SUPPLEMENTAL DATA:
Net assets, end of period                     $124,544,763       $118,513,120       $101,748,818       $99,349,617   $36,304,163
Ratio of net expenses to
average net assets                                    0.80%(4)           0.84%              0.85%             0.84%         0.82%(3)
Ratio of net investment income to
average net assets                                    5.12%              5.23%              5.28%             4.81%         4.87%(3)
Portfolio turnover rate                                 14%                11%                22%                6%            7%
</TABLE>
    

(1) Commencement of operations.
(2)  The front-end sales charge in effect for the Fund prior to June 1, 1994
     is not reflected in Total Return as set forth in the table.
(3) Annualized.
   
(4) The ratio does not include fees paid indirectly.  If the Fund did not have
    fees paid indirectly, the expense ratio would have been 0.81% for 1996.
    




<PAGE>   9



   
INVESTMENT OBJECTIVE AND POLICIES
    
The investment objective of the Fund is to provide investors with a high level
of current income that is exempt from federal and Wisconsin personal income
taxes.  The Fund invests primarily in municipal securities that are exempt from
personal income tax in Wisconsin and under federal law, including certain
Wisconsin municipal securities and securities of other entities meeting such
criteria.

Only limited categories of municipal securities are exempt from Wisconsin
personal income taxes.  These include higher education bonds issued by the
State of Wisconsin, public housing authority bonds issued by Wisconsin
municipalities, redevelopment authority bonds issued by Wisconsin
municipalities, certain bonds issued by the Wisconsin Housing and Economic
Development Authority, Wisconsin Housing Finance Authority bonds, certain
general obligation bonds issued by the District of Columbia, Puerto Rico, the
Virgin Islands and Guam, and certain public housing agency bonds issued by
agencies located outside of Wisconsin.  Due to the limited availability and
liquidity of such securities issued within Wisconsin, it is possible that the
Fund may invest a significant portion of its assets in obligations issued by
territories and possessions of the United States, and the District of Columbia,
their agencies or instrumentalities.  The Fund may invest up to 100% of its
assets in tax-exempt securities of issuers outside of Wisconsin if such
securities bear interest which is exempt from federal and Wisconsin personal
income taxes.

INVESTMENT POLICIES OF THE FUND

TAX-FREE INCOME.  As a matter of fundamental policy, the Fund will seek to
invest at least 80% of its assets so that the income earned thereon will be
exempt from federal and Wisconsin personal income taxes.  In practice, under
normal market conditions, the Fund will seek to invest all of its assets so
that income therefrom will be exempt from federal and Wisconsin personal income
tax, other than assets invested for hedging purposes.  There can be no
assurance that the Fund will be successful in this investment policy or that it
will achieve its investment objective.

Also as a matter of fundamental policy, the Fund will seek to invest its assets
so that at least 80% are invested so as to be exempt from the federal
alternative minimum tax.  However, under abnormal conditions the Fund may
invest as much as 100% of its assets in municipal securities issued to finance
private activities whose interest is a "tax preference item" for purposes of
the federal alternative minimum tax.  If you are subject to the alternative
minimum tax, a portion of your income may not be exempt from federal income
tax.  Income distributions that are a tax preference item for purposes of the
federal alternative minimum tax are considered to be exempt from federal income
tax for purposes of the Fund's objective.  See "Dividends, Distributions and
Taxes."

TAX-FREE INVESTMENTS.  The term "municipal securities," as used in this
Prospectus, means debt obligations issued by or on behalf of states,
territories or possessions of the United States, the District of Columbia and
their political subdivisions, agencies, and instrumentalities, the interest on
which is generally exempt from federal income tax.

Municipal securities are classified principally as either "general obligations"
or "revenue obligations."  General obligation bonds are secured by the
municipality's pledge of its credit




<PAGE>   10

and taxing power for the payment of principal and interest.  Revenue
obligations are generally payable only from the revenues derived from a
particular facility or class of facilities, or in some cases from the proceeds
of a special excise tax or other specific revenue source.  Industrial
development or revenue bonds are usually bonds the credit quality of which is
related directly to the credit standing of the industrial user involved or of
any entity which has provided a guaranty or enhancement of such credit.

The Fund may invest in municipal lease obligations, which are issued by a state
or local government or authority to acquire land, equipment or facilities and
are not fully backed by the municipality's credit.  These obligations typically
are secured by the municipality's obligation to make payments under the lease,
which may be subject to certain conditions, including future appropriation of
funds.  If the municipality stops making lease payments, the obligations could
lose value.  A more detailed description of lease obligations is set forth in
the Statement of Additional Information under "Investment Objective and
Policies - Tax-Exempt Obligations - State or Municipal Lease Obligations."

OTHER INVESTMENTS.  The Fund may invest temporarily in certificates of deposit,
bankers' acceptances and other time deposits.  Certificates of deposit are
certificates representing the obligation of a bank to repay the funds deposited
(plus interest thereon) at a time certain after the deposit.  Bankers'
acceptances are credit instruments evidencing the obligation of a bank to pay a
draft drawn on it by a customer.  Time deposits are non-negotiable deposits
maintained in a banking institution for a specified period of time at a stated
interest rate.  Time deposits maturing in greater than seven days will be
considered illiquid securities.

Under abnormal market conditions or for defensive purposes, the Fund may invest
more than 20% of its assets in fixed-income securities, the interest on which
is subject to federal and/or Wisconsin personal income tax.  Investments in
securities subject to federal income tax will be primarily in securities issued
or guaranteed by the United States government, its agencies, instrumentalities
or authorities; corporate debt securities rated in the highest three categories
by Moody's Investors Service, Inc. ("Moody's"), Standard & Poor's Corporation
("S&P"), or Fitch Investors Service, Inc. ("Fitch"); commercial paper rated in
the highest category by S&P or Moody's; unrated variable rate demand notes
which Heartland Advisors believes have investment characteristics comparable to
debt securities rated in one of the top three rating categories by Moody's, S&P
or Fitch; or certificates of deposit of the 100 largest domestic banks in terms
of assets which are subject to federal or state regulatory supervision.

INVESTMENT QUALITY

The Fund invests primarily in municipal bonds judged by Heartland Advisors to
be of investment grade quality.  Such securities are considered by Heartland
Advisors to include securities rated at the time of purchase within the four
highest rating categories assigned by Moody's, S&P, or Fitch, or securities
which are unrated, provided that such securities are judged by Heartland
Advisors, at the time of purchase, to be of comparable quality to




<PAGE>   11

securities rated within such four highest categories.  A description of the
ratings assigned by Moody's, S&P and Fitch is contained in the Statement of
Additional Information.  Investment grade bonds have adequate to strong
protection of principal and interest payments.  The investment grade rating of
some bonds may result from various enhancements, such as insurance or letters
of credit, rather than the credit of the issuer.  Bonds rated in the fourth
highest rating category are more sensitive to economic changes than are bonds
rated in one of the top three categories, and such bonds have speculative
characteristics.

The Fund may invest up to 25% of its assets in lower quality bonds (those rated
below the four highest categories by Moody's, S&P or Fitch or judged by
Heartland Advisors to be of comparable quality, commonly known as "junk
bonds"), provided that it may not invest in bonds rated below B at the time of
purchase.  Bonds rated below the top four rating categories are regarded, on
balance, as predominantly speculative with respect to the capacity to pay
interest and repay principal in accordance with the terms of the obligation.
While such bonds typically offer higher rates of return, they involve greater
risk, including greater risk of default and loss of principal.

The prices of these lower rated bonds may be less sensitive to interest rate
changes than higher rated bonds, but more sensitive to adverse economic
changes.  Periods of economic uncertainty and change may cause market price
volatility in these higher yielding bonds and corresponding volatility in the
Fund's net asset value.  Furthermore, higher yielding bonds may contain
redemption or call provisions which, if exercised during a declining interest
rate environment, may require the Fund to replace the security with a lower
yielding security, resulting in a decreased return to the Fund. Finally, the
secondary trading market for higher yielding bonds may not be as active as for
lower yielding bonds.  As a result, it may be difficult to accurately assess
the value of such bonds (and therefore the Fund's securities portfolio), and
the Fund's ability to dispose of such bonds may be limited.  For a more
detailed discussion of the risks associated with investing in lower rated
securities, see "Investment Objective and Policies - Tax-Exempt Obligations -
Non-Investment Grade Bonds" in the Statement of Additional Information.

Subsequent to their purchase by the Fund, particular obligations may cease to
be rated or their ratings may be reduced below the minimum rating required for
purchase by the Fund.   Neither event will require the elimination of an
investment from the Fund's portfolio, but Heartland Advisors will consider such
an event in its determination of whether the Fund should continue to hold an
investment in its portfolio.

Rated as well as unrated municipal securities will be analyzed by Heartland
Advisors on the basis of available information as to creditworthiness and with
a view to various qualitative factors and trends affecting municipal securities
generally.  It should be noted, however, that the amount of information about
the financial condition of an issuer of municipal securities or an obligor
thereon may not be as extensive or as readily available as information
regarding securities that are more actively traded.




<PAGE>   12



ASSET COMPOSITION

   
The following table provides a summary of the Fund's debt holdings as rated by
S&P or, in the case of unrated securities, as determined by Heartland Advisors.
These figures are dollar-weighted averages of month-end portfolio holdings of
the Fund during the fiscal year ended December 31, 1996, presented as a
percentage of total investments.  These percentages are historical and are not
necessarily indicative of the quality of current or future Fund holdings, which
may vary.
    


   
<TABLE>
<CAPTION>
           S&P RATING                     FUND    
          OR EQUIVALENT                 AVERAGE  
             <S>                         <C>      
                                                  
             AAA                         30.9%    
             AA                           2.3%    
             A                           51.1%    
             BBB                         15.7%    
             BB                            0%     
             B                             0%     
</TABLE>
    


   
The dollar-weighted average of debt securities included in these figures and
not rated by S&P amounted to 44.9% for the Fund.  This may include securities
rated by other nationally recognized rating organizations, as well as unrated
securities.  Unrated securities are not necessarily lower-quality securities.
Issuers of municipal securities frequently choose not to incur the expense of
obtaining a rating.  Please refer to the Statement of Additional Information
for a more complete discussion of these ratings.
    

OTHER INVESTMENT PRACTICES

In addition to the investments described above, the Fund may invest in certain
securities and employ certain investment techniques, which may present special
risks as described below.  A more complete discussion of these securities and
investment techniques and their associated risks, as well as further investment
restrictions to which the Fund may be subject, is contained in the Statement of
Additional Information.

OPTIONS, FUTURES CONTRACTS AND OPTIONS ON FUTURES CONTRACTS.  The Fund may
engage in transactions in options, futures contracts, and options on futures
contracts to hedge against anticipated declines in the market value of its
portfolio securities, or against increases in the market values of securities
it intends to purchase, or to manage exposure to changing interest rates.  The
Fund will not use these instruments for speculation.  Some options and futures
strategies, including selling futures, buying puts and writing calls, tend to
hedge the Fund's investments against price fluctuations.  Other strategies,
including buying futures, writing puts, and buying calls, tend to increase
market exposure.  Options and futures may be combined with each other in order
to adjust the risk and return characteristics of the Fund's overall strategy.




<PAGE>   13



The Fund may purchase and write put and call options that are traded on
recognized U.S. exchanges with respect to any type of security or index related
to its investments, and may enter into closing transactions with respect to
such options.  The Fund may purchase and sell futures contracts, including
interest rate futures and index futures, that are traded on a recognized U.S.
exchange, board of trade or similar entity, or quoted on an automated quotation
system.  The Fund may also purchase and write put and call options on futures
contracts and enter into closing transactions with respect to such options.

The Fund will limit its use of these hedging instruments so that:  (i) no more
than 5% of the Fund's total assets would be committed to initial margin
deposits or premiums on futures contracts; (ii) no more than 20% of the Fund's
net assets would be subject to futures contracts; (iii) no more than 5% of the
Fund's total assets would be committed to premiums paid for options; and (iv)
no more than 20% of the Fund's total assets would be subject to options.  Each
of these limitations applies immediately after a purchase.  A subsequent change
in the applicable percentage resulting from market fluctuations does not
require elimination of any security, option or future from the Fund's
portfolio.  Consequently, the Fund's assets could be hedged in excess of the
above percentages at a date subsequent to the hedging transaction.

Options and futures can be highly volatile investments and involve certain
risks.  Successful hedging strategies require the ability to predict future
movements in securities prices, interest rates and other economic factors.
Heartland Advisors' attempts to use such investments for hedging purposes may
not be successful and could result in reduction of the Fund's total return.
The Fund's potential losses from the use of futures extends beyond its initial
investment in such contracts.

Because available exchange-traded options and futures contracts will not match
the Fund's current or anticipated investments exactly, there is a risk that the
options or futures positions will not track the performance of the Fund's other
investments.  The Fund could also experience losses if the prices of its
options or futures positions were poorly correlated with its other investments,
or if it was unable to close out its positions due to disruptions in the market
or lack of liquidity.

WHEN-ISSUED AND DELAYED DELIVERY TRANSACTIONS.  The Fund may purchase
securities on a when-issued or delayed delivery basis, i.e., obligate itself to
purchase or sell securities with delivery and payment to occur at a later date
in order to secure what is considered to be an advantageous price and yield at
the time of entering into the obligation.  The Fund will make such commitments
only with the intention of actually acquiring the securities, but may sell the
securities before settlement date if it is deemed advisable for investment
reasons.  At the time the Fund makes a commitment to purchase an obligation, it
will record the transaction and reflect the value of the obligation in
determining its net asset value.  The Custodian will maintain on a daily basis
a separate account consisting of cash or liquid securities with a value at
least equal to the amount of the Fund's commitments to purchase when-issued
obligations.




<PAGE>   14



REPURCHASE AGREEMENTS.  The Fund also may invest in collateralized repurchase
agreements, but has no present intention to do so.  Such repurchase agreements
are described in the Statement of Additional Information under "Investment
Objective and Policies - Taxable Obligations - Repurchase Agreements."

BORROWING.  The Fund may borrow from banks for temporary or emergency purposes
up to 10% of its total assets and pledge up to 10% of its total assets in
connection therewith.

PORTFOLIO TURNOVER AND MATURITY

   
While it is not the policy of the Fund to trade actively for short-term
profits, it will dispose of securities without regard to the time they have
been held when such action appears advisable to Heartland Advisors.  Frequent
portfolio trades may result in higher transaction and other costs.  The Fund's
portfolio turnover rate for the fiscal year ended December 31, 1996 was 14%.
The Fund is not restricted as to the average maturity of its portfolio.
    

INVESTMENT LIMITATIONS

The Fund's investment policies discussed above are subject to further
restrictions which are described in the Statement of Additional Information.
Three principal investment limitations are that:

1.   Under normal market conditions, the Fund will seek to invest at least 80%
     of its assets so that the income earned thereon will be exempt from
     federal and Wisconsin personal income taxes.

2.   The Fund will seek to invest its assets so that at least 80% are invested
     so as to be exempt from the federal alternative minimum tax.

3.   The Fund will not purchase a security if, as a result thereof, (i) more
     than 25% of its total assets would be invested in a single issuer, other
     than securities issued or guaranteed by the United States government, or a
     state or territory of the United States, or the District of Columbia, or
     their agencies, instrumentalities, municipalities or political
     subdivisions or (ii) more than 10% of its net assets would be invested in
     illiquid securities.

The above "Investment Limitations" are fundamental policies of the Fund and can
be changed only by a majority vote of its shareholders.  However, neither the
investment objective nor policies of the Fund are fundamental and they may be
changed by Heartland's Board of Directors.  If there is a future change in the
investment objective, shareholders should consider whether the Fund remains an
appropriate investment in light of their then current financial position and
needs.




<PAGE>   15



RISK FACTORS

MARKET RISK.  The principal value of the Fund's assets would be expected to
vary with changes in interest rates.  It may be expected that a decline in
prevailing levels of interest rates generally will increase the value of
securities held by the Fund, and an increase in rates will generally have the
opposite effect.  The Fund may employ hedging techniques to reduce the effects
of interest rate fluctuations; however, there can be no assurance that such
techniques will be successful.  Thus, interest rate fluctuations will affect
the Fund's net asset value per share, but not the income received by it from
its existing portfolio securities.  Because yields on securities available for
purchase by the Fund will vary over time, no specific yield on the Fund's
portfolio can be assured.

Total returns on bonds tend to fluctuate in much wider ranges than fluctuations
in interest rates because gain or loss in bond value is combined with interest
to calculate total return.  The amount of increase or decrease in value and
total return will also be affected by the average maturity of the Fund, with
shorter maturities tending to minimize changes and longer maturities tending to
produce greater changes.

CREDIT RISK

GEOGRAPHIC CONCENTRATION.  Ordinarily, an investment company concentrating its
investments in limited geographic areas, such as the Fund, would be exposed to
greater credit risks than an investment company investing in a nationally
diversified portfolio of municipal securities.  The value of municipal
securities may be closely tied to local, political, and economic conditions and
developments within Wisconsin.  Other risks include possible tax changes,
legislative or judicial action, environmental concerns, and differing levels of
supply and demand for debt obligations exempt from federal and Wisconsin
personal income taxes.

The Fund's policies and programs seek to minimize this geographic concentration
risk in a number of ways.  First, the Fund intends to comply with the
provisions of Subchapter M of the Internal Revenue Code which, in part, require
that, at the close of each quarter of the taxable year, those issues which
represent more than 5% of the Fund's total assets be limited in the aggregate
to 50% of the Fund's total assets, and that no single issue exceed 25% of the
Fund's total assets.  Moreover, since the Fund's policies and programs permit
it to purchase securities issued by territories or possessions of the United
States, including, Puerto Rico, the Virgin Islands, Guam and the District of
Columbia, which are exempt from federal and Wisconsin personal income taxes,
the geographic concentration is less than if the Fund was limited solely to
investments in one state.

Wisconsin Economy.  Wisconsin's economy, which, although fairly diverse, is
primarily concentrated in the services industry (accounting for approximately
25% of its total non-farm employment) and secondarily in trade and
manufacturing, has continued to outperform the




<PAGE>   16

   
national economy.  The state's unemployment rate has been below the national
average for the past nine years.  The state government has also maintained a
balanced budget during that same period.  As a result, revenues and assets
necessary to support and collateralize interest and principal payments on bonds
issued by Wisconsin public and private issuers in which the Fund may invest
remain relatively strong.
    

   
Puerto Rico Economy.  A significant portion of the Fund may be invested in
municipal securities issued by or on behalf of Puerto Rico, its agencies or
instrumentalities.  At March 31, 1997, 6.1% of the Fund's assets were invested
in such securities.  Since the early 1970s, manufacturing has been the primary
force in Puerto Rican development. Other major sectors of Puerto Rico's economy
include government, trade and services.  Puerto Rico's unemployment rate
remains relatively high at approximately 14% and per capita income is less than
half of the U.S. average.  Debt ratios for the Commonwealth are high as it
assumes much of the responsibility for financing improvements in the local
infrastructure.  Historically, Puerto Rico's economic base was centered around
tax advantages offered to U.S. manufacturing firms.  However, legislation
passed in 1996 significantly reduces such tax incentives, with a general
phase-out by 2006 for corporations with operations on the island.  While Puerto
Rico may have time to find other sources of economic growth, it is still
uncertain what effect such reduction in tax incentives will have on the
Commonwealth's economic stability and on the market for its securities.
    

   
Guam Economy.  The Fund may also invest a significant portion of its assets in
certain obligations issued by or on behalf of the Government of Guam.  At March
31, 1997, such securities made up 7.7% of the Fund's total assets.  Guam's
economy is heavily dependent upon the U.S. military and tourism.  Further
reductions in the U.S. military presence in Guam, circumstances which
negatively impact the tourism industry, such as natural disasters and domestic
economic difficulties in the countries of its foreign tourists, particularly
Japan, or continuation of past weak financial performance could negatively
impact the long-term outlook for Guam's economy and the market for its
securities.
    

Industry Concentration.  The Fund may invest 25% or more of its total assets in
municipal securities whose revenue sources are from similar types of projects,
for example, community development, education, electric utilities, health care,
housing, redevelopment, transportation, or water, sewer and gas utilities.
There may be economic, business or political developments or changes that
affect all securities of a similar type, such as proposed legislation affecting
the financing of certain projects, judicial decisions relating to the validity
of certain projects or the means of financing them, shortages or price
increases of necessary materials, or declining market needs for such projects.
Therefore, developments affecting a single issuer or industry, or the
securities financing similar types of projects, could have a significant effect
on the Fund's performance.

The Fund historically has invested a substantial portion of its assets in
housing authority obligations.  Since housing authority obligations may be
supported to a large extent by federal




<PAGE>   17

housing subsidy programs, the failure of a housing authority to meet the
qualifications required for coverage under the federal programs could result in
a decrease or elimination of subsidies available for payment of principal and
interest on the housing authority's obligations. Economic developments,
including fluctuations in interest rates, failure or inability to increase
rentals and increasing construction and operating costs may adversely impact
the revenues of housing authorities, and adverse economic conditions may result
in an increasing rate of default by mortgagors on the underlying mortgage
loans.  For some housing authorities, inability to obtain additional financing
could also reduce revenues available to pay existing obligations.  In addition,
certain housing authority obligations may be subject to early redemption at par
based on unused proceeds from the issue and/or prepayment of underlying
mortgage obligations.

Obligations issued to finance the operation or expansion of utilities may be
affected by various economic and other conditions which adversely impact
utility entities, including inflation, increases in financing requirements,
increases in raw material, construction and other operating costs, changes in
the demand for services and the effects of environmental and other governmental
regulations.  In particular, recent laws regulating air quality standards and
future legislation regarding other environmental and toxic waste regulation may
further increase the cost of utility services.

HOW TO BUY SHARES

SHARE PRICE
   
The Fund's shares are sold without a sales charge.  The Fund's share price is
the net asset value per share next determined following receipt of an order in
proper form, or receipt of funds if purchase is made by wire, by the Fund or
its authorized service agent or sub-agent.  Net asset value is calculated daily
as described under "Net Asset Value Calculation."  Firstar Trust Company serves
as the Fund's transfer and dividend disbursing agent (the "Agent").
    

OPENING AN ACCOUNT AND PURCHASING SHARES


BY MAIL TO:                              BY OVERNIGHT MAIL TO:
 Firstar Trust Company                   Firstar Trust Company
 Mutual Fund Services, 3rd Floor         Mutual Fund Services, 3rd Floor
 P.O. Box 701                            615 East Michigan Street
 Milwaukee, WI 53201-0701                Milwaukee, WI 53202


   
To Open an Account:
    

Complete and sign the Account Application.  Make your check payable to the
Heartland Wisconsin Tax Free Fund and mail to one of the addresses above.






<PAGE>   18

To Add to an Account:

Make your check payable to the Fund, indicate your Fund account number on your
check, and mail to one of the addresses above.  You may also include an
"Additional Investment Form" from a prior account statement with your check.

BY WIRE:

 Firstar National Bank
 ABA #0750-00022
 Firstar Trust MFS A/C #112-952-137
 777 East Wisconsin Avenue, Milwaukee, WI 53202
 CREDIT TO:  Heartland Wisconsin Tax Free Fund, (your account number and the
 title of the account)
   
To Open an Account:
    
   
Call the Agent at 1-800-443-2862  prior to sending the wire.  Specify Fund
name, include your name, and wire as described above.  Then complete, sign and
mail the Account Application to one of the addresses above for mail or
overnight mail.
    

   
To Add to an Account:
    

Specify Fund name, include your name and account number, and wire as described
above.

BY TELEPHONE:

     1-800-432-7856

     or

     414-289-7000

To Open an Account:

Unless you have elected not to have this privilege on the Account Application,
you may call to exchange from another Heartland fund account with the same
registration, including name, address and taxpayer ID number.  See "Shareholder
Services-Exchange Privilege."






<PAGE>   19





To Add to an Account:

Unless you have elected not to have this privilege on the Account Application,
you may call to exchange from another Heartland fund account with the same
registration, including name, address and taxpayer ID.  See "Shareholder
Services-Exchange Privilege."

AUTOMATICALLY:

To Open an Account:

   
Complete and sign the Account Application, as well as an Automatic Investment
Plan Application, and mail to one of the addresses above.  Your purchase of
Fund shares will be made automatically in accordance with the Plan.
    

   
To Add to an Account:
    

   
Use Heartland's automatic investment plan.  Sign up for this service on your
Account Application, or call 1-800-432-7856 for information on how to add this
service.
    

THROUGH SECURITIES REPRESENTATIVES:

To Open an Account:

You may purchase shares through a broker-dealer or financial institution which
must promptly forward the order, together with payment, to the Agent.  The
broker-dealer or financial institution may charge a fee for such services.

   
To Add to an Account:
    

You may purchase shares through a broker-dealer or financial institution which
must promptly forward the order, together with payment, to the Agent.  The
broker-dealer or financial institution may charge a fee for such services.
______________________________________________________________________________

CONDITIONS OF YOUR PURCHASE.

MINIMUM INVESTMENTS.  The minimum initial investment for the Fund is $1,000.
The minimum additional investment, except for reinvestments of distributions
and investments under the automatic investment plan, is $100.





<PAGE>   20


   
PURCHASES THROUGH SERVICE PROVIDERS.  If you purchase shares through a program
of services offered or administered by a broker-dealer, financial institution,
or other service provider, you should read the program materials provided by
the service provider, including information relating to fees, in conjunction
with this Prospectus.  Certain features of a Fund may not be available or may
be modified in connection with the program of services provided.  When shares
are purchased this way, the service provider, rather than its customer, may be
the shareholder of record of the shares.  Certain service providers may receive
compensation from the Funds and/or Heartland Advisors for providing such
services.
    

   
OTHER CONDITIONS.  All purchases must be made in U.S. dollars and checks must
be drawn on U.S. banks.  Cash will not be accepted for the purchase of shares.
If a check fails to clear, the purchase to which the check relates will be
canceled and the prospective investor will be liable for any losses or fees
incurred by the Fund or the Fund's Agent, including without limitation a $20
fee to cover bank handling charges for returning checks due to insufficient
funds.  When purchases are made by check, the Fund can hold payment on
redemption of shares so purchased until it is reasonably satisfied that the
check has cleared.  To avoid such a delay, an investor can wire federal funds
as described above from a bank, which may charge a fee for that service.
Wiring federal funds means that the bank sends money to a bank account
maintained by the Fund through the Federal Reserve System.
    

SHAREHOLDER SERVICES

The Fund offers a number of shareholder services designed to facilitate
investment in its shares.  Full details of each of the services and
instructions as to how to participate in the various services can be obtained
from the Fund or Heartland Advisors.

   
AUTOMATIC DIVIDEND REINVESTMENT.  You may automatically reinvest all dividends
and distributions or elect to receive them in the form of a check.  If your
dividends and distributions are reinvested, they will automatically purchase
additional shares of the Fund, or shares of another Heartland fund, as
indicated on your account application, at the net asset value determined on the
dividend or distribution payment date, without any sales charge or fees.  You
may change your election at any time by writing or calling Heartland Advisors.
Heartland Advisors must receive any change seven days prior to a payment date
for it to be effective for that payment.
    

   
AUTOMATIC INVESTMENT PLAN.  The automatic investment plan of the Fund offers a
simple way to maintain a regular investment program.  By completing the
automatic investment portion of the account application attached to this
Prospectus, you may arrange automatic transfers (minimum $50 per transaction)
from your checking or savings account to your account in the Fund on a monthly
or twice-monthly basis.  The application must be accompanied by a "voided"
check, and be received at least 14 business days prior to the initial
transaction.  Once enrolled in the automatic investment plan, you may change
the monthly amount or terminate your participation at any time by writing the
Agent.  Allow five business days for a change to

    



<PAGE>   21

   
become effective.  Your bank must be a member of Automated Clearing House.  If
the automatic purchase cannot be made due to insufficient funds or a stop
payment, a $20 service fee will be assessed.  If you stop making automatic
investments when your aggregate investment in the Fund is less than $500, the
Fund reserves the right to redeem your account after giving 60 days notice,
unless you make additional investments to bring your account value to $1,000.
The program will automatically be terminated upon redemption of all shares,
including an exchange of all shares to another fund.  You will receive
quarterly confirmations of your transactions from the Agent and your regular
bank account statement will show the debit transaction each month.
    

   
SYSTEMATIC WITHDRAWAL PLAN.  You can set up automatic withdrawals from your
account at monthly, quarterly, or annual intervals.  To begin distributions,
you must have an initial balance of $25,000 in your account and withdraw at
least $100 per payment.  To establish the systematic withdrawal plan, request a
form by calling 1-800-432-7856.  The systematic withdrawal plan may be
terminated by you or by the Fund at any time by written notice.
    

EXCHANGE PRIVILEGE.  Shares of the Fund which have been registered in your name
for at least 15 days may be exchanged for shares of any other Heartland fund,
or for shares in the Portico Money Market Fund, provided the fund into which
you wish to exchange is qualified for sale in the jurisdiction of residence
which you state at the time you make the exchange.  Before initiating an
exchange, you should obtain from Heartland Advisors and carefully read the
prospectus relating to the fund into which you wish to exchange.

Exchanges Among Heartland Funds.  Under the exchange privilege, each Heartland
fund offers to exchange its shares for shares of another Heartland fund on the
basis of relative net asset value per share, without the payment of any fees or
charges.  In order to qualify for the exchange privilege without further
approval of the fund, it is required that the shares being exchanged have a net
asset value of at least $1,000, but not more than $500,000.  In addition, if
you have certificates for any shares being exchanged, you must surrender such
certificates in the same manner as in redemption of shares.  Shares of the Fund
acquired in exchange for shares of another Heartland fund that was purchased
between February 12, 1993 and June 1, 1994 subject to a contingent deferred
sales charge will remain subject to any such charge applicable upon ultimate
redemption of the shares.

Exchanges with Portico.  Shareholders may exchange all or a portion of their
shares in the Fund for shares of the Portico Money Market Fund at their
relative net asset values and may also exchange back into a Heartland fund
without the imposition of any charges or fees.  These exchanges are subject to
the minimum purchase and redemption amounts set forth in the prospectus for the
Portico Money Market Fund.  No charge to shareholders is imposed in connection
with this exchange; however, Heartland Advisors, as distributor, is entitled to
receive a fee from the Portico Money Market Fund for certain distribution and
support services at the annual rate of .20 of 1% of the average daily net asset
value of the shares for which it is the holder or dealer of record.




<PAGE>   22



   
How to Exchange.  To exercise the exchange privilege, you need to do one of the
following:  (a) contact Heartland Advisors by telephone (1-800-432-7856 or
414-289-7000) and request the exchange, unless you have elected not to have
this telephone privilege by so indicating on the Account Application; (b)
complete an Exchange Application available from Heartland Advisors and submit
it to the Agent; or (c) contact your securities representative (either in
writing or by telephone), who will advise Heartland of the exchange, but who
may charge a fee for such service.  See "HOW TO REDEEM SHARES - Telephone
Redemptions" for information on transactions by telephone.
    

Tax and Other Considerations.  An exchange between funds is treated as a sale
for federal income tax purposes and, depending upon the circumstances, a short
or long-term capital gain or loss may be realized.  If you have questions as to
the tax consequences of an exchange, you should consult your tax advisor.  The
exchange privilege may be modified or terminated at any time upon 60 days prior
written notice.  Although an investor may make up to four exchanges in any
calendar year, Heartland reserves the right to limit the number of exchanges
beyond that.

DIVIDENDS, DISTRIBUTIONS AND TAXES

   
DISTRIBUTIONS.  The Fund will accrue income dividends daily and distribute all
of its net investment income to shareholders monthly.  Capital gains dividends,
if any, will be distributed annually.  Dividends and capital gains
distributions will be reinvested in additional shares of the Fund, unless the
shareholder has indicated on the account application or otherwise notified
Heartland Advisors by telephone or in writing that he or she elects to receive
such dividends and distributions in cash.
    

FEDERAL TAXES.  Interest earned by the Fund on municipal securities is in
general federally tax-free when distributed to you as dividends.  If the Fund
earns taxable income from any of its investments, it would be distributed as a
taxable dividend.  Gains from the Fund's hedging transactions will be
distributed as short-term and long-term capital gains.

The Fund may invest in municipal obligations whose interest (less any related
expenses) is subject to the federal alternative minimum tax for individuals
(private activity securities).  To the extent that the Fund invests in private
activity securities, individuals who are subject to the alternative minimum tax
will be required to report a portion of the Fund's dividends as a "tax
preference item" in determining their federal alternative minimum tax.
Liability for the federal alternative minimum tax will depend on each
investor's individual tax circumstances.

Distribution from the Fund's short-term capital gains are federally taxable as
dividends, and long-term capital gain distributions are federally taxable as
long-term capital gains.  Distributions of long-term capital gains will be
taxable to the investor as long-term capital gains regardless of the length of
time shares have been held.  The Fund's distributions are taxable




<PAGE>   23

when they are paid, whether you take them in cash or reinvest them in
additional shares, except that distributions declared in December and paid in
January are taxable as if paid on December 31.  You will receive information
annually indicating the tax status of the dividends received in the prior year
under federal and Wisconsin law.

STATE TAXES.  To the extent that the Fund's distributions are derived from
obligations whose interest is tax-free under Wisconsin law, its dividends paid
from tax-exempt interest will be exempt from Wisconsin personal income tax.
Wisconsin also imposes a state alternative minimum tax dependent upon an
investor's individual tax circumstances, which is based on federal alternative
minimum tax with certain modifications.  Distributions from short-term and
long-term capital gains will be taxable as dividends and as capital gains,
respectively, for state tax purposes.

"BUYING A DIVIDEND."  On the record date for a distribution from capital gains
by the Fund, its share price is reduced by the amount of the distribution.  If
you buy shares just before the record date ("buying a dividend"), you will pay
the full price for the shares, and then receive a portion of the price back as
a taxable distribution.

OTHER TAX INFORMATION.  Under federal tax law, some investors may be subject to
a 31% withholding on reportable dividends, capital gains distributions, and
redemption payments ("backup withholding").  Generally, investors subject to
backup withholding will be those for whom a taxpayer identification number is
not on file with the Fund or who, to the Fund's knowledge, have furnished an
incorrect number.  In order to avoid this withholding requirement, an investor
must certify on the account application that the taxpayer identification number
provided is correct and that the investment is not otherwise subject to backup
withholding, or is exempt from backup withholding.

The foregoing discussion relates to federal and Wisconsin taxation as of the
date of this Prospectus and is general in nature; each investor is advised to
consult his or her tax advisor for additional information.  Distributions from
the Fund, including exempt-interest dividends, may be subject to tax in other
states.

THE FUND AND THE HEARTLAND ORGANIZATION

Heartland's Board of Directors provides broad supervision over the affairs of
the Fund, and the officers are responsible for its operations.

HEARTLAND ADVISORS
Heartland Advisors provides the Fund with overall investment advisory and
administrative services under an Investment Advisory Agreement with Heartland.
Subject to policies established by Heartland's Board of Directors, Heartland
Advisors makes investment decisions on behalf of the Fund, makes available
research and statistical data, and supervises the




<PAGE>   24

acquisition and disposition of investments by the Fund.  Heartland Advisors is
also the distributor for the Fund.

   
Heartland Advisors, founded in 1982, serves as the investment advisor for the
Heartland Small Cap Contrarian Fund, Value Fund, Mid Cap Value Fund, Large Cap
Value Fund, Value Plus Fund, U.S. Government Securities Fund, Short Duration
High-Yield Municipal Fund, and High-Yield Municipal Bond Fund, eight additional
series of Heartland, and also provides investment management services for
individuals, and institutional accounts, such as pension funds and
profit-sharing plans.  As of March 31 1997, Heartland Advisors had
approximately $3.1 billion in assets under management.  Heartland Advisors'
principal mailing address is 790 North Milwaukee Street, Milwaukee, Wisconsin
53202.  William J. Nasgovitz, a Director and President of Heartland and
Heartland Advisors, is a controlling person of Heartland Advisors through his
ownership of a majority of its voting common stock.
    

   
Heartland Advisors bears all of its expenses in providing services under its
Investment Advisory Agreement and pays all salaries, fees and expenses of the
officers and directors of Heartland who are affiliated with Heartland Advisors.
The Fund bears all of its other expenses including, but not limited to,
necessary office space, telephone and other communications facilities and
personnel competent to perform administrative, clerical and shareholder
relations functions; a pro rata portion of salary, fees and expenses (including
legal fees) of those directors, officers and employees of Heartland who are not
officers, directors or employees of Heartland Advisors; interest expenses, fees
and expenses of the Custodian, Transfer and Dividend Disbursing Agent; fees of
shareholder recordkeeping agents; taxes and governmental fees; brokerage
commissions and other expenses incurred in acquiring or disposing of portfolio
securities; expenses of registering and qualifying shares for sale with the
Securities and Exchange Commission and state securities commissions; accounting
and legal costs; insurance premiums; expenses of maintaining the Fund's legal
existence and of shareholder meetings; expenses of preparation and distribution
to existing shareholders of reports, proxies and prospectuses; and fees and
expenses of membership in industry organizations.
    

   
For the fiscal year ended December 31, 1996, the Fund paid advisory fees of
$789,698, or approximately 0.65 of 1% of average net assets.
    

   
PORTFOLIO MANAGER.  Patrick J. Retzer has served as portfolio manager for the
Fund since commencement of its operations.  Mr. Retzer is also portfolio
co-manager of the Heartland U.S. Government Securities Fund.  Mr. Retzer has
been Vice President and Treasurer of Heartland Advisors and Heartland since
1987, a Director of Heartland Advisors since 1988 and a Director of Heartland
since 1993.
    








<PAGE>   25


NET ASSET VALUE CALCULATION

The Fund's net asset value per share is computed daily by dividing the total
value of the investments and other assets of the Fund, less any liabilities, by
the total outstanding shares of the Fund.  The net asset value per share is
determined as of the close of the New York Stock Exchange regular trading
(generally 4:00 p.m. Eastern time) on each day the New York Stock Exchange is
opened.

   
Securities owned by the Fund are valued on the basis of market quotations or at
their fair value.  The Fund generally uses fair value, as market quotations for
most municipal bonds are not readily available on a daily basis.  Fair value of
the Fund's debt securities is determined by a pricing service approved by
Heartland's Board of Directors, based primarily upon information concerning
market transactions and dealer quotations for similar securities, or by dealers
who make markets in such securities.  Debt securities having maturities of 60
days or less may be valued at acquisition cost, plus or minus any amortized
discount or premium.  Any securities or other assets for which market
quotations are not readily available will be valued in good faith at their fair
market value using methods determined by Heartland's Board of Directors.
    

DESCRIPTION OF FUND SHARES

Heartland is a diversified open-end management investment company registered
under the Investment Company Act of 1940, which was organized in 1986 as a
Maryland corporation.  The authorized common stock of Heartland consists of one
billion shares, $0.001 par value per share.  Heartland is a series company,
which means the Board of Directors may establish additional series, and may
increase or decrease the number of shares in each series.  The Fund is a
separate non-diversified mutual fund series of Heartland.  Currently, the
Heartland family of funds consists of the following series:



   
<TABLE>
<CAPTION>

                                                       COMMENCED
 FUND                                                  OPERATIONS
<S>                                                     <C>              
Small Cap Contrarian Fund                               4/27/95
              
Value Fund                                              12/28/84
              
Mid Cap Value Fund                                      10/11/96
              
Large Cap Value Fund                                    10/11/96
              
Value Plus Fund                                         10/26/93
              
U.S. Government Securities Fund                           4/9/87
              
Short Duration High-Yield Municipal Fund                  1/2/97
</TABLE>
    






<PAGE>   26



   
<TABLE>
<S>                                                     <C>              
High-Yield Municipal Bond Fund                            1/2/97

Wisconsin Tax Free Fund                                   4/3/92

</TABLE>
    



Each share has one vote, and when issued and paid for in accordance with the
terms of the offering will be fully paid and non-assessable.  On matters
affecting an individual Heartland fund (such as approval of advisory contracts
and changes in fundamental policy of a fund) a separate vote of the shares of
that fund is required.  Shares of a fund are not entitled to vote on any matter
not affecting that fund.  All shares of each Heartland fund vote together in
the election of Directors at each meeting of shareholders at which directors
are to be elected and on other matters as provided by law, or Heartland's
Articles of Incorporation or Bylaws.  Heartland's Bylaws do not require that
meetings of shareholders be held annually.  However, special meetings of
shareholders may be called for purposes such as electing or removing Directors,
changing fundamental policies or approving investment advisory contracts.

Shares of stock are redeemable at net asset value, less any applicable
contingent deferred sales charge, at the option of the shareholder.  Shares
have no preemptive, cumulative voting, subscription or conversion rights and
are freely transferable.  Shares can be issued as full shares or fractions of
shares.  A fraction of a share has the same kind of rights and privileges as a
full share on a pro rata basis.  Shareholder inquiries should be directed to
the Fund at the address shown on the back cover of the Prospectus.

PORTFOLIO TRANSACTIONS

   
As provided in its Investment Advisory Agreement, Heartland Advisors is
responsible for the Fund's portfolio decisions and the placing of portfolio
transactions.  Purchase and sale orders for the Fund's portfolio securities may
be effected through brokers who charge a commission for their services,
although it is expected that a majority of transactions in debt securities will
generally be conducted with dealers acting as principals.  In executing such
transactions, Heartland Advisors seeks to obtain the best net results for the
Fund, taking into account such factors as price (including the brokerage
commission or dealer spread), size of order, competitive commissions on similar
transactions, difficulty of execution and operation facilities of the firm
involved and the firm's risk in positioning a block of securities.  While
Heartland Advisors seeks reasonably competitive rates, it does not necessarily
pay the lowest commission or spreads available.  Transactions in smaller issues
of municipal securities may involve specialized services on the part of the
broker and thereby entail higher spreads than would be paid in transactions
involving more widely traded securities.
    

The Fund will not deal with Heartland Advisors in any transaction in which
Heartland Advisors acts as a principal.  However, Heartland Advisors may serve
as broker to the Fund in over-the-counter transactions conducted on an agency
basis.  Pursuant to plans adopted by Heartland's Board of Directors under, and
subject to, the provisions of Rule 10f-3 under the




<PAGE>   27

Investment Company Act of 1940, the Fund may purchase securities in an offering
from an underwriter which is a member of an underwriting syndicate of which
Heartland Advisors is also a member.  The plans and Rule 10f-3 limit the
securities that may be so purchased, the time and manner of purchase, the
underwriting discount and amount of purchase, and require a review by the Board
of Directors of any such transactions at least quarterly.

   
Although Heartland Advisors may serve as a broker for the Fund, such
transactions are expected to be infrequent. In order for Heartland Advisors to
effect any portfolio transactions for the Fund, the commissions, fees or other
remuneration received by Heartland Advisors must be reasonable and fair
compared to, and will not ordinarily be larger than, the commissions, fees or
other remuneration paid to other brokers in connection with comparable
transactions involving similar securities being purchased or sold in similar
markets during a comparable period of time.
    

   
Allocation of transactions, including their frequency, to various dealers is
determined by Heartland Advisors, as the Fund's advisor, in its best judgment
and in a manner deemed fair and reasonable to shareholders.  The primary
consideration is prompt and efficient execution of orders in an effective
manner at the most favorable price.  Subject to this primary consideration,
Heartland Advisors may also consider the provision of supplemental research
services and sales of the shares of Heartland funds as factors in the selection
of broker-dealers to execute portfolio transactions.
    

PERFORMANCE INFORMATION

From time to time the Fund may advertise its "yield" and "total return."  Yield
is based on historical earnings and total return is based on historical
distributions; neither is intended to indicate future performance.  The "yield"
of the Fund refers to the income generated by an investment in the Fund over a
one-month period (which period will be stated in the advertisement).  This
income is then "annualized."  That is, the amount of income generated by the
investment during the month is assumed to be generated each month over a
12-month period and is shown as a percentage of the investment.

"Total return" of the Fund refers to the average annual total return for one,
five and ten-year periods (or the portion thereof during which the Fund has
been in existence).  Total return is the change in redemption value of shares
purchased with an initial $1,000 investment, assuming the reinvestment of
dividends and capital gain distributions, and the redemption of the shares at
the end of the period.  Performance information should be considered in light
of the Fund's investment objective and policies, characteristics and quality of
its portfolio securities and the market conditions during the applicable
period, and should not be considered as a representation of what may be
achieved in the future.  The Fund may also advertise total returns other than
those described above if such information is deemed informative to investors
for use in evaluating the Fund.





<PAGE>   28


In connection with the standardized yield and total return quotations described
above, the Fund may also advertise a standardized tax equivalent yield which
illustrates the yield that would be required on a fully taxable investment to
result in the same net income to an investor in the Fund, after payment of
federal and Wisconsin taxes at the stated rate.  The yield is computed by
dividing that portion of the Fund's current yield which is tax-exempt by one
minus a stated federal and Wisconsin income tax rate, and then adding the
product to the value of any yield of the Fund which is not tax-exempt.

   
The Fund may, from time to time, compare its performance to other mutual funds
with similar investment objectives and to the industry as a whole, as quoted by
ranking services and publications, such as Lipper Analytical Services, Inc.,
Morningstar, Inc., CDA Technologies, Forbes, Fortune, Money and Business Week.
These rating services and magazines rank the performance of the Fund against
all funds over specified periods and in specified categories.  The Fund may
also compare its performance to recognized bond market indices, such as the
Lehman Brothers Municipal Bond Index.  Further information is contained in the
Statement of Additional Information.
    

HOW TO REDEEM SHARES

   
Shareholders may have any or all of their shares redeemed as described below on
any day the Fund is open for business at the next determined net asset value
per share following receipt of a redemption in proper form (see "Net Asset
Value Calculation").  Shares of the Fund acquired in exchange for shares of a
Heartland fund subject to a contingent deferred sales charge may be redeemed at
the next determined net asset value less any applicable contingent deferred
sales charge.
    

BY TELEPHONE:

   
 1-800-432-7856
 or
 414-289-7000
    

You may redeem by calling Heartland Advisors unless you elected not to have
this privilege on your account application.

THROUGH SECURITIES REPRESENTATIVES:

You may redeem shares through a broker-dealer or financial institution, which
must promptly forward your instructions to the Agent.  The broker-dealer or
financial institution may charge a fee for such services.





<PAGE>   29


BY MAIL TO:

     Firstar Trust Company
     Mutual Fund Services, 3rd Floor
     P.O. Box 701
     Milwaukee, WI 53201-0701

BY OVERNIGHT DELIVERY TO:

     Firstar Trust Company
     Mutual Fund Services, 3rd Floor
     615 East Michigan Street
     Milwaukee, WI 53202

   
Send a written request specifying the name of the Fund, the number of shares to
be redeemed, your name, your account number, and any additional documents
listed below that apply to your particular account.  The Agent cannot accept
requests specifying a particular date for redemption or other special
conditions.  A signature guarantee is required for certain redemptions,
including written redemptions over $25,000.  For further information, see
"Signature Guarantees."
    


TYPE OF REGISTRATION              REQUIREMENTS

 Individual, Joint Tenants,       Letter of instruction signed by all persons
 Sole Proprietorship, Custodial,  authorized to sign for the account, exactly
 General Partners                 as it is registered, accompanied by
                                  signature guarantee(s) if required.

 Corporations, Associations       Letter of instruction accompanied by a
                                  corporate resolution.  The letter must be
                                  signed by at least one individual authorized
                                  (via corporate resolution) to act on the
                                  account.  The corporate resolution must
                                  include a corporate seal or signature
                                  guarantee.

 Trusts                           Letter of instruction signed by the
                                  Trustee(s) (as Trustee(s)), with signature
                                  guarantee(s).  (If the Trustee's name is not
                                  registered on the account, provide a copy of
                                  the trust document, certified within the last
                                  60 days.)






<PAGE>   30


If you do not fall into any of these registration categories (i.e., executors,
administrators, conservators, or guardians), please call Heartland Advisors for
further instructions.

TELEPHONE REDEMPTIONS.  Shares may be redeemed by telephone, unless the
shareholder elects not to have this privilege on the account application.  By
establishing the telephone redemption service, the shareholder assumes some
risks for unauthorized transactions.  Heartland Advisors has implemented
procedures designed to reasonably assure that telephone instructions are
genuine.  These procedures include recording telephone conversations,
requesting verification of various pieces of personal information and providing
written confirmation of such transactions.  If the Agent, the Fund, Heartland
Advisors or any of their employees fails to abide by these procedures, the Fund
may be liable to a shareholder for losses he or she suffers from any resulting
unauthorized transaction(s).  However, none of the Agent, the Custodian, the
Fund, Heartland Advisors or any of their employees will be liable for losses
suffered by a shareholder which result from following telephone instructions
reasonably believed to be genuine after verification pursuant to these
procedures.

   
There is currently no charge for telephone redemptions, although a charge may
be imposed in the future. Subject to waiver by the Fund in certain instances,
the minimum amount that may be redeemed by telephone is $1,000;  all other
redemptions may be done in writing. During periods of substantial economic or
market changes, telephone redemptions may be difficult to implement.  If a
shareholder is unable to contact Heartland Advisors or the Agent by telephone,
shares may also be redeemed by delivering the redemption request to the Agent
in person or by mail as described above.  The Agent and the Fund reserve the
right to change, modify or terminate this telephone redemption service at any
time.
    

SIGNATURE GUARANTEES.  To protect your account, the Agent and the Fund from
fraud, signature guarantees are required for certain redemptions.  Signature
guarantees enable the Agent to be sure that you are the person who has
authorized a redemption from your account. Signature guarantees are required
for:  (1) any redemption by mail if the proceeds are to be paid to someone
other than the person(s) or organization in whose name the account is
registered or are to be sent to an address other than the address of the
registered holder of the shares; (2) any redemptions by mail which request that
the proceeds be wired to a bank; (3) any redemptions by mail where the
redemption proceeds exceed $25,000; and (4) requests to transfer the
registration of shares to another owner.  These requirements may be waived by
the Fund in certain instances.

The following institutions are acceptable guarantors:  (a) commercial banks,
savings and loan associations and savings banks, which are members of the
Federal Deposit Insurance Corporation; (b) credit unions; (c) trust companies;
(d) firms which are members of a domestic stock exchange; and (e) foreign
branches of any of the above.  The Agent cannot accept guarantees from notaries
public.





<PAGE>   31


SENDING REDEMPTION PROCEEDS.  The Agent will not send redemption proceeds until
all payments for the shares being redeemed have cleared, which may take up to
15 days from the purchase date.

By Mail.  The Agent mails checks for redemption proceeds typically within one
or two days, but not later than seven days, after it receives the request and
all necessary documents.  The Agent will send redemption proceeds in accordance
with your instructions.

   
By Wire.  The Agent will normally wire redemption proceeds to your bank the
next business day after receiving the redemption request and all necessary
documents.  The signatures on any written request for a wire redemption must be
guaranteed.  The Agent currently deducts a $12.00 wire charge from the
redemption proceeds.  This charge is subject to change.  You will be
responsible for any charges which your bank may make for receiving wires.
    

   
CERTAIN CONDITIONS.  If, due to redemptions, exchanges or other transfers, a
shareholder's account drops below $500 for three months or more, the Fund has
the right to redeem the shareholder's account, after giving 60 days notice,
unless the shareholder makes additional investments to bring the account value
to $1,000.  Alternatively, the Fund may, after giving notice, impose a fee on
accounts maintained below the minimum investment level without an active
automatic investment plan.
    

The Fund may suspend the right to redeem shares for any period during which (a)
the New York Stock Exchange is closed or the Securities and Exchange Commission
determines that trading on the Exchange is restricted; (b) there is an
emergency as a result of which it is not reasonably practicable for the Fund to
sell its portfolio securities or to calculate the fair value of its net assets;
or (c) the Securities and Exchange Commission may permit for the protection of
shareholders.




<PAGE>   32


HEARTLAND FUNDS

   
General Information and Account/Price Information (24 hrs):
    

   
1-800-432-7856 or (414) 289-7000
    


HEARTLAND FUNDS

790 North Milwaukee Street
Milwaukee, Wisconsin 53202


INVESTMENT ADVISOR AND DISTRIBUTOR

Heartland Advisors, Inc.
790 North Milwaukee Street
Milwaukee, Wisconsin 53202


CUSTODIAN, TRANSFER AND
DIVIDEND DISBURSING AGENT

Firstar Trust Company
Mutual Fund Services, 3rd Floor
P.O. Box 701
Milwaukee, Wisconsin 53201-0701

AUDITOR

   
Price Waterhouse LLP
100 East Wisconsin Avenue
Milwaukee, Wisconsin 53202
    

COUNSEL

Quarles & Brady
411 East Wisconsin Avenue
Milwaukee, Wisconsin 53202


   
    




<PAGE>   33



                       HEARTLAND WISCONSIN TAX FREE FUND

     The Fund's address is 790 North Milwaukee Street, Milwaukee, Wisconsin
53202, and its telephone number is 414-289-7000 or 1-800-432-7856.

   
     This Statement of Additional Information is not a prospectus and should be
read in conjunction with the Prospectus dated May 1, 1997.  A copy of the
Prospectus may be obtained without charge by telephone or written request to
the distributor, Heartland Advisors, Inc. ("Heartland Advisors"), or
participating dealers or financial institutions.  Shareholder inquiries should
be directed to the Fund in writing or by telephone.
    

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

                      Statement of Additional Information

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

     Shares may be purchased directly from Heartland Advisors, 790 North
Milwaukee Street, Milwaukee, Wisconsin 53202, without a sales charge.  For more
complete information, including an account application form, see the Prospectus
or call Heartland Advisors toll free at 1-800-432-7856.  Shares may also be
purchased through a broker-dealer or financial institution who may charge a fee
for such service.

   
     THE DATE OF THIS STATEMENT OF ADDITIONAL INFORMATION IS MAY 1, 1997.
    






<PAGE>   34




                      INTRODUCTION TO THE HEARTLAND FUNDS

     The Heartland family of funds consists of separate series of Heartland
Group, Inc. ("Heartland"), a Maryland corporation registered as an open-end
management investment company.  This Statement of Additional Information
relates only to the Heartland Wisconsin Tax Free Fund (the "Fund") which is a
non-diversified fund with a distinct investment objective and program.  A
separate Prospectus and related Statement of Additional Information for the
other Heartland funds are available from Heartland Advisors.

   
     The Fund commenced operations on April 3, 1992 and, as of December 31,
1996, the Fund had total assets in excess of $124 million.  Based on this
information, the Fund is the oldest and largest double tax free fund in the
State of Wisconsin.  The Fund is the only double tax free fund that is 100%
no-load to all investors in the State of Wisconsin.
    


                       INVESTMENT OBJECTIVE AND POLICIES

GENERAL

     The following information supplements the discussion of the Fund's
investment objective and policies discussed in the Prospectus.  Unless
otherwise specified, the investment objective, policies and restrictions of the
Fund are not fundamental, and are therefore subject to change by the Board of
Directors of Heartland without shareholder approval.  However, shareholders
will be notified prior to a material change in any such objective, policy or
restriction.  The fundamental policies of the Fund, on the other hand, may not
be changed without the approval of at least a majority of the outstanding
shares of the Fund or, if it is less, 67% of the shares represented at a
meeting of shareholders of the Fund at which the holders of 50% or more of the
shares are represented.

TAX EXEMPT OBLIGATIONS

     General.  The term "Tax Exempt Obligations" as used herein refers to debt
obligations issued by or on behalf of states, territories or possessions of the
United States or the District of Columbia, or their agencies,
instrumentalities, municipalities and 

                                      2

<PAGE>   35


political subdivisions, the interest payable on which is, in the opinion of
bond counsel, excludable from gross income both for purposes of federal income
taxation (except, in certain instances, the alternative minimum tax, depending
upon the shareholder's tax status) and Wisconsin personal income tax.  Tax
Exempt Obligations are generally issued to obtain funds for various public
purposes, including the construction or improvement of a wide range of public
facilities such as airports, bridges, highways, housing, hospitals, mass
transportation, schools, streets and water and sewer works.  Other public
purposes for which Tax Exempt Obligations may be issued include refunding
outstanding obligations, obtaining funds for general operating expenses and
lending such funds to other public institutions and facilities.  In addition,
Tax Exempt Obligations may be issued by or on behalf of public bodies to obtain
funds to provide for the construction, equipping, repair or improvement of
housing facilities, convention or trade show facilities, airport, mass transit,
industrial, port or parking facilities and certain local facilities for water
supply, gas, electricity, sewage or solid waste disposal.
        
     The yields on Tax Exempt Obligations are dependent on a variety of
factors, including the financial condition of the issuer or other obligor
thereon or the revenue source from which debt service is payable, general
economic and monetary conditions, conditions in the relevant market, the size
of a particular issue, maturity of the obligation and the rating of the issue.

     Securities in which the Fund may invest, including Tax Exempt Obligations,
are subject to the provisions of bankruptcy, insolvency, reorganization and
other laws affecting the rights and remedies of creditors, such as the Federal
Bankruptcy Code, and laws, if any, which may be enacted by Congress, state
legislatures or other governmental agencies extending the time for payment of
principal or interest, or both, or imposing other constraints upon enforcement
of such obligations within constitutional limitations.  There is also the
possibility that, as a result of litigation or other conditions, the power or
ability of issuers to make interest and principal payments on their Tax Exempt
Obligations may be materially impaired.

     From time to time, legislation has been introduced in Congress for the
purpose of restricting the availability of or eliminating the federal income
tax exemption for interest on Tax 

                                      3


<PAGE>   36

Exempt Obligations, some of which have been enacted.  Additional proposals may
be introduced in the future which, if enacted, could affect the availability of
Tax Exempt Obligations for investment by the Fund and the value of the Fund's
portfolio.  In such event, management of the Fund may discontinue the issuance
of shares to new investors and may re-evaluate the Fund's investment objective
and policies and adopt and implement possible changes to them and the
investment program of the Fund.
        
     As noted in the Prospectus, the Fund invests primarily in municipal bonds
judged by Heartland Advisors, the Fund's investment advisor, to be of
investment grade quality.  Heartland Advisors considers Tax Exempt Obligations
to be investment grade if rated by Moody's, S&P or Fitch within their four
highest rating categories for municipal securities, or securities which are
unrated, provided that such securities are judged by Heartland Advisors, at the
time of purchase, to be of comparable quality to securities rated within such
four highest categories.  A description of the rating categories is contained
in Appendix A attached to this Statement of Additional Information.  Bonds
rated in the fourth highest rating category are generally more sensitive to
economic changes than are those rated in one of the top three categories, and
these bonds generally have speculative characteristics.

     Subsequent to being purchased by the Fund, an issue of rated Tax Exempt
Obligations may cease to be rated or its rating may be reduced below the top
four categories.  Neither event will require the sale of such Tax Exempt
Obligations by the Fund, but Heartland Advisors will consider such event in
determining whether the Fund should continue to hold the Tax Exempt
Obligations.  To the extent that the ratings given by Moody's, S&P or Fitch for
Tax Exempt Obligations may change as a result of changes in such organizations
or their rating systems, the Fund will attempt to use comparable ratings as
standards for their investments in accordance with the investment policies
contained in the Prospectus and this Statement of Additional Information.

     The ratings of Moody's, S&P and Fitch represent their opinions as to the
quality of the Tax Exempt Obligations which they undertake to rate.  Investors
should bear in mind, however, that ratings are relative and subjective and are
not absolute standards of quality.  Although these ratings are an initial

                                      4


<PAGE>   37

consideration for selection of portfolio investments, Heartland Advisors will
subject these securities to other evaluative criteria prior to investing in
such securities, and may invest in unrated securities which it believes, based
on information available to it and its own analysis, are of comparable quality
to those securities that are rated in the top four categories.

     Non-Investment Grade Bonds.  The Fund may invest up to 25% of its assets
in non-investment grade bonds (those rated below the four highest categories by
Moody's, S&P or Fitch or, if unrated, judged by Heartland Advisors to be of
comparable quality), provided that the Fund may not invest in bonds rated below
B at the time of purchase.  These so-called "junk bonds" are regarded, on
balance, as predominantly speculative with respect to the capacity of the
issuer to pay interest and repay principal in accordance with the terms of the
obligation.  While such bonds typically offer higher rates of return than
investment grade bonds, they also involve greater risk, including greater risk
of default.  An economic downturn could severely disrupt the market for such
high yield bonds and adversely affect their value and the ability of the
issuers to repay principal and interest.  The rate of incidence of default on
junk bonds is likely to increase during times of economic downturns and
extended periods of increasing interest rates.  Yields on junk bonds will
fluctuate over time, and are generally more volatile than yields on investment
grade bonds.
        
   
     The secondary trading market for junk bonds may be less well established
than for investment grade bonds, and such bonds may therefore be only thinly
traded.  As a result, there may be no readily ascertainable market value of
such securities, in which case it will be more difficult for the Funds to value
accurately the securities, and consequently the investment portfolio.  Under
such circumstances, the subjective judgment of the Board of Directors will play
a greater role in the valuation.  Additionally, adverse publicity and investor
perceptions, whether or not based on fundamental analysis, may decrease the
values and liquidities of junk bonds, especially in a thinly traded market.  To
the extent such securities are or become "illiquid" under the guidelines
established by Heartland's Board of Directors, the Fund's ability to purchase
and hold such securities will be subject to its investment restriction limiting
its investment in 
    

                                      5

<PAGE>   38

illiquid securities to 10% of its net assets.  See "Investment Restrictions."

     As noted above, the Fund will not invest in junk bonds that are rated
below the fifth or sixth rating categories by any of S&P, Moody's, or Fitch (Ba
and B for Moody's and BB and B for S&P and Fitch) or, if unrated, judged
comparable by Heartland Advisors.  Bonds rated in the first of those categories
have less near-term vulnerability to default than other speculative issues,
however they face major ongoing uncertainties or exposure to adverse business,
financial or economic conditions which could lead to inadequate capacity to
meet timely interest and principal payments.  However, business and financial
alternatives available to obligors of such bonds can generally be identified
which could assist them in satisfying their debt service requirements.  Bonds
rated in the second of these two categories are considered highly speculative.
While the issuers of such bonds must be currently meeting debt service
requirements in order to achieve this rating, adverse business, financial or
economic conditions could likely impair the issuer's capacity or willingness to
pay interest and repay principal.  A detailed description of the
characteristics associated with the various debt credit ratings established by
S&P, Moody's and Fitch is set forth in Appendix A to this Statement of
Additional Information.
        
     While rating categories help identify credit risks associated with bonds,
they do not evaluate the market value risk of junk bonds.  Additionally, the
credit rating agencies may fail to promptly change the credit ratings to
reflect subsequent events.  Accordingly, Heartland's Board of Directors and
Heartland Advisors continuously monitor the issuers of junk bonds held in the
Fund's portfolio to assess and determine whether the issuers will have
sufficient cash flow to meet required principal and interest payments, and to
assure the continued liquidity of such bonds so that the Fund can meet
redemption requests.

     Floating and Variable Rate Demand Notes.  The Fund may purchase floating
and variable rate demand notes.  Generally, such notes are secured by letters
of credit or other credit support arrangements provided by banks.  Such notes
normally have a stated long-term maturity but permit the holder to tender the
note for purchase and payment of principal and accrued interest upon a
specified number of days notice.  The issuer of floating and 

                                      6

<PAGE>   39


variable rate demand notes normally has a corresponding right, after a given
period, to prepay in its discretion the outstanding principal amount of the
note plus accrued interest upon a specified number of days notice to the
noteholders. The interest rate on a floating rate demand note is based on a
specified interest index, such as a bank's prime rate, and is adjusted
automatically with changes in the index.  The interest rate on a variable rate
demand note is adjusted at specified intervals, based upon current market
conditions. Heartland Advisors monitors the creditworthiness of issuers of
floating and variable rate demand notes in the Fund's portfolio.
        
     State or Municipal Lease Obligations.  The Fund may invest a portion of
its assets in state or municipal leases and participation interests therein.
The leases may take the form of a lease with an option to purchase, an
installment purchase or a conditional sales contract which is entered into by
state and local governments and authorities to purchase or lease a wide array
of equipment such as fire, sanitation or police vehicles or telecommunications
equipment, buildings or other capital assets.  State or municipal lease
obligations frequently have the special risks described below which are not
associated with general obligation or revenue bonds issued by public bodies.

     The constitution and statutes of many states contain requirements with
which the state and municipalities must comply whenever incurring debt.
Depending on the circumstances, these requirements may include approving voter
referenda, debt limits, interest rate limits and public sale requirements.
Leases have evolved as a means for public bodies to acquire property and
equipment without needing to comply with all of the constitutional and
statutory requirements for the issuance of debt.  The debt-issuance limitations
may be inapplicable for one or more of the following reasons:  (i) the
inclusion in many leases or contracts of "nonappropriation" clauses that
provide that the public body has no obligation to make future payments under
the lease or contract unless money is appropriated for such purpose by the
appropriate legislative body on a yearly or other periodic basis (the
"nonappropriation" clause); (ii) the exclusion of a lease or conditional sales
contract from the definition of indebtedness under relevant state law; or (iii)
the lease provides for termination at the option of the public body at the end
of each 

                                      7

<PAGE>   40

fiscal year for any reason or, in some cases, automatically if not
affirmatively renewed.

     Typically, if the lease is terminated by the public body for
nonappropriation or another reason not constituting a default under the lease,
the lessor, or holder of participation interest in the lease, is without
recourse to the general credit of the public body and may be limited to
repossession of the leased property.  The disposition of the leased property by
the lessor in the event of a lease termination might prove difficult and could
result in a loss to the holders of participation interests.

     When-Issued Purchases.  The Fund may make commitments to purchase Tax
Exempt Obligations on a "when-issued" basis, that is, delivery and payment for
the obligations normally takes place at a date after the commitment to purchase
although the payment obligation and the coupon rate have been established
before the time the Fund enters into the commitment.  The settlement date
usually occurs within one week of the purchase of notes and within one month of
the purchase of bonds.  The Fund intends to make commitments to purchase
obligations with the intention of actually acquiring them, but may sell the
obligations before the settlement date if such action is advisable or necessary
as a matter of investment strategy.  At the time the Fund makes a commitment to
purchase an obligation, it will record the transaction and reflect the value of
the obligation in determining its net asset value.  The Fund's custodian,
Firstar Trust Company (the "Custodian"), will maintain on a daily basis a
separate account consisting of cash or liquid debt securities with a value at
least equal to the amount of the Fund's commitments to purchase "when-issued"
obligations.
        
     Obligations purchased on a "when-issued" basis or held in the Fund's
portfolio are subject to changes in market value based not only upon the
public's perception of the creditworthiness of the issuer, but also upon
changes in the level of interest rates.  In the absence of a change in credit
characteristics, which would likely cause changes in value, the value of
portfolio investments can be expected to decline in periods of rising interest
rates and to increase in periods of declining interest rates.

     When payment is made for "when-issued" securities, the Fund will meet its
obligation from its then available cash flow, sale 


                                      8

<PAGE>   41

of securities held in the separate account, sale of other securities or,
although it would normally not expect to do so, from sale  of the "when-issued"
securities themselves (which may have a market value greater or lesser than the
Fund's obligation).  Sale of securities to meet such obligations would involve
a greater potential for the realization of capital gains, which could cause the
Fund to realize income not exempt from federal and Wisconsin personal income
tax.
        
TAXABLE OBLIGATIONS

     As set forth in the Prospectus, under certain circumstances and subject to
certain limitations, the Fund may invest in obligations and instruments, the
interest on which is includable in gross income for purposes of federal and
state income taxation.

     Government Obligations.  The Fund may invest in securities issued or
guaranteed by the U.S. Government or its agencies or instrumentalities.  These
securities include a variety of Treasury securities, which differ in their
interest rates, maturities and times of issuance.  Treasury Bills generally
have maturities of one year or less; Treasury Notes generally have maturities
of one to ten years; and Treasury Bonds generally have maturities of greater
than ten years.  Some obligations issued or guaranteed by U.S. Government
agencies and instrumentalities, such as Government National Mortgage
Association pass-through certificates, are supported by the full faith and
credit of the U.S. Treasury; other obligations, such as those of the Federal
Home Loan Banks, are secured by the right of the issuer to borrow from the
Treasury; other obligations, such as those issued by the Federal National
Mortgage Association, are supported by the discretionary authority of the U.S.
Government to purchase certain obligations of the agency or instrumentality;
and other obligations, such as those issued by the Student Loan Marketing
Association, are supported only by the credit of the instrumentality itself. 
Although the U.S. Government provides financial support to such U.S.
Government-sponsored agencies or instrumentalities, no assurance can be given
that it will always do so, since it is not so obligated by law.  The Fund will
invest in such securities only when Heartland Advisors is satisfied that the
credit risk with respect to the issuer is minimal.
        
                                      9

<PAGE>   42


     Repurchase Agreements.  The Fund may invest in repurchase agreements.  The
Custodian will hold the securities underlying any repurchase agreement or such
securities will be part of the Federal Reserve Book Entry System.  The market
value of the collateral underlying the repurchase agreement will be determined
on each business day.  If at any time the market value of the collateral falls
below the repurchase price of the repurchase agreement (including any accrued
interest), the obligor under the agreement will promptly furnish additional
collateral to the Custodian (so the total collateral is an amount at least
equal to the repurchase price plus accrued interest).

     Other Taxable Investments.  As noted in the Prospectus, the Fund also may
invest temporarily in certificates of deposit, bankers' acceptances and other
time deposits.

OPTIONS, FUTURES CONTRACTS AND OPTIONS ON FUTURES CONTRACTS

     Writing Covered Call Options.  The Fund may write covered call options on
securities related to its investments (such as U.S. Government securities) and
enter into closing transactions with respect to such options.  In writing
covered call options, the Fund expects to generate additional premium income
which should serve to enhance the Fund's total return and reduce the effect of
any decline in the market price of the securities in the Fund's portfolio.

   
     A call option gives the holder (buyer) the right to purchase a specified
security at a stated price (the exercise price) at any time before a specified
date (the expiration date).  The term "covered" call option means that the Fund
will own the securities subject to the option or have an unconditional right to
purchase the same underlying security at a price equal to or less than the
exercise price of the "covered" option, or will establish and maintain with its
Custodian, for the term of the option, an account consisting of cash or other
liquid assets having a value equal to the fluctuating market value of the
optioned securities.
    

     Through receipt of the option premium, a call writer mitigates the effects
of a price decline.  At the same time, because a call writer must be prepared
to deliver the underlying security in return for the exercise price, even if
its current value is greater, a call writer gives up some ability to

                                     10

<PAGE>   43

participate in the underlying price increases. If a call option which the Fund
has written expires, the Fund will realize a gain in the amount of the premium;
however, such gain may be offset by a decline in the market value of the
underlying security during the option period.  If the call option is exercised,
the Fund will realize a gain or loss    from the sale of the underlying
security.                                   

     The premium received is the market value of an option.  The premium the
Fund receives from writing a call option reflects, among other things, the
current market price of the underlying security, the relationship of the
exercise price to such market price, the historical price volatility of the
underlying security and the length of the option period.  The premium received
by the Fund for writing covered call options will be recorded as a cash asset
and a liability of the Fund.  The liability will be adjusted daily with a
corresponding adjustment to the Fund's total assets, to reflect the option's
current market value, which will be the latest sale price at the time at which
the net asset value per share of the Fund is computed (close of regular trading
on the New York Stock Exchange), or, in the absence of such sale, the latest
asked price.  The liability will be extinguished and the net gain or loss on
the option realized upon expiration of the option, the purchase of an identical
option in a closing transaction, or delivery of the underlying security upon
the exercise of the option.  The Fund does not consider a security covered by a
call to be "pledged" as that term is used in the Fund's policy limiting the
pledging of its assets.

     Closing transactions may be effected by purchasing a call option in order
to realize a profit on an outstanding call option, to prevent an underlying
security from being called, or to permit the sale of the underlying security.
Furthermore, effecting a closing transaction may permit the Fund to write
another call option on the underlying security with either a different exercise
price or expiration date or both.  If the Fund desires to sell a particular
security from its portfolio on which it has written a call option, it will seek
to effect a closing transaction prior to, or concurrently with, the sale of the
security.  There is, of course, no assurance that the Fund will be able to
effect such closing transactions at a favorable price.  The Fund may pay
transaction costs in connection with the writing or purchase of options to
close out previously written options, which costs are 

                                     11

<PAGE>   44



normally higher than the transaction costs applicable to purchases and sales of
portfolio securities.

     Writing Covered Put Options.  The Fund may write covered put options on
securities related to its investments, and may purchase options to close out
options previously written by the Fund.  As the writer (seller) of a put
option, the Fund has the obligation to buy from the purchaser the underlying
security at the exercise price during the option period.  In return for receipt
of the premium, the Fund assumes the obligation to pay the exercise price for
the option's underlying security if the other party to the option chooses to
exercise it.  The operation of put options in other respects, including their
related risks and rewards, is substantially identical to that of call options.

   
     The Fund will write put options only on a covered basis, which means that
the Fund will maintain a segregated account consisting of cash or other liquid
assets in an amount not less than the exercise price of the option, or the Fund
will own an option to sell the underlying security subject to the option having
an exercise price equal to or greater than the exercise price of "covered"
options at all times while the put option is outstanding.  The Fund may seek to
terminate its position in a put option it writes before exercise by closing out
the option in the secondary market at its current price.  If the secondary
market is not liquid for a put option the Fund has written, however, the Fund
must continue to be prepared to pay the exercise price while the option is
outstanding, regardless of price changes, and must continue to segregate assets
to cover its position.
    

     If the price of the underlying security rises, a put writer would
generally expect to profit, although its gain would be limited to the amount of
the premium it received for writing the put because it did not own the
underlying security and therefore would not benefit from the appreciation in
price.  If the price of the underlying security falls, the put writer would
expect to suffer a loss, which loss could be substantial.  However, the loss
should be less than the loss experienced if the Fund had purchased the
underlying security directly because the premium received for writing the
option will mitigate the effects of the decline.

     Purchasing Put Options.  The Fund may purchase put options on securities
related to its investments (such as U.S. Government 

                                     12

<PAGE>   45


securities).  As the holder of a put option, the Fund has the right to sell the
underlying security at the exercise price at any time during the option period. 
The Fund may also enter into closing transactions with respect to such options,
exercise them or permit them to expire.  The Fund may purchase a put option on
a security related to its investments as a defensive technique in order to
protect against an anticipated decline in the value of the security.  Such
hedge protection is provided only during the life of the put option when the
Fund, as holder of the put option, is able to sell the underlying security at
the put exercise price regardless of any decline in the underlying security's
market price.  The premium paid for the put option and any transaction costs
would reduce any gain otherwise available for distribution when the security is
eventually sold.
        
     The premium paid by the Fund when purchasing a put option will be recorded
as an asset of the Fund.  This asset will be adjusted daily to the option's
current market value, which will be the latest sale price at the time at which
the net asset value per share of the Fund is computed (close of regular trading
on the New York Stock Exchange), or, in the absence of such sale, the latest
bid price.  This asset will be extinguished upon expiration of the option, the
selling (writing) of an identical option in a closing transaction, or the
delivery of the underlying security upon the exercise of the option.

     Purchasing Call Options.  The Fund may purchase call options on securities
related to its investments.  As the holder of a call option, the Fund has the
right to purchase the underlying security at the exercise price at any time
during the option period.  The Fund may enter into closing sale transactions
with respect to such options, exercise them or permit them to expire.  A call
buyer typically attempts to participate in potential price increases of the
underlying security with risk limited to the cost of the option if security
prices fall.  At the same time, the buyer can expect to suffer a loss if
security prices do not rise sufficiently to offset the cost of the option.

     Index Options.  The Fund may buy and sell options on indices related to
its investments (such as municipal bond or U.S. Treasury securities indices),
and may enter into closing transactions with respect to such options.  Options
on indices would be used in a manner similar to the use of options on
securities; 

                                     13

<PAGE>   46


however, upon the exercise of an index option, settlement occurs in cash rather
than by delivery of an underlying security, with the exercising option holder
receiving the difference between the closing level of the index upon which the
option is based and the exercise price of the option.  Unlike options on
specific debt instruments, gain or loss on an index option depends on the price
movements in the instruments underlying the index rather than price movements
in individual debt instruments.
        
     Options on Futures Contracts.  The Fund may buy and sell options on
futures contracts and enter into closing transactions with respect to such
options.  Options on futures contracts would be used in a manner similar to the
use of options on securities. An option on a futures contract gives the
purchaser the right, in return for the premium paid, to assume a position in a
futures contract (a long position if the option is a call, and a short position
if the option is a put) at a specified exercise price at any time during the
option exercise.  The writer of the option is required upon exercise to assume
an offsetting futures position at a specified exercise price at any time during
the period of the option. When writing an option on a futures contract the Fund
will be required to make margin payments as described below for futures
contracts.

     Futures Contracts.  The Fund may purchase and sell futures contracts,
including interest rate and securities index futures contracts, that are traded
on a recognized U.S. exchange, board of trade or similar entity, or quoted on
an automated quotation system.

     When the Fund purchases a futures contract, it agrees to purchase a
specified underlying instrument at a specified future date.  When the Fund
sells a futures contract, it agrees to sell the underlying instrument at a
specified future date.  The price at which the purchase and sale will take
place is fixed when the Fund enters into the contract.  The purchaser or seller
of a futures contract is not required to deliver or pay for the underlying
instrument unless the contract is held until the delivery date.  However, upon
entering into a futures contract, and to maintain an open position in futures
contracts, the Fund would be required to deposit "initial margin" with its
Custodian in a segregated account in the name of the executing futures
commission merchant when the contract is entered into.  The margin 

                                     14

<PAGE>   47



required for a particular futures contract is set by the exchange on which the
contract is traded and may be significantly modified from time to time by the
exchange during the term of the contract.  Futures contracts are customarily
purchased and sold on margins that may range upward from less than 5% of the
value of the contract being traded.

     If the price of an open futures contract changes (by increase in the case
of a sale or by decrease in the case of a purchase) so that the loss of the
futures contract reaches a point at which the margin on deposit does not
satisfy margin requirements, the broker will require the payment of "variation
margin" to settle the change in value on a daily basis.  If the value of a
position increases because of favorable price changes in the futures contract
so that the margin deposit exceeds the required margin, the broker will pay the
excess to the Fund.  In computing daily net asset value, the Fund marks to
market the current value of its open futures contracts.  The Fund expects to
earn interest income on its margin deposits.

     Futures contracts can be held until their delivery dates, or can be closed
out before then if a liquid secondary market is available.  Closing out an open
futures contract purchase or sale is effected by entering into an offsetting
futures contract sale or purchase, respectively, for the same aggregate amount
of the identical securities and the same delivery date.  If the Fund closes out
an open futures contract by entering into an offsetting futures contract, and
the offsetting purchase price is less than the original sale price, the Fund
realizes a gain; if it is more, the Fund realizes a loss.  Conversely, if the
offsetting sale price is more than the original purchase price, the Fund
realizes a gain; if it is less, the Fund realizes a loss.  The transaction
costs must also be included in these calculations.  There can be no assurance
that the Fund will be able to enter into an offsetting transaction with respect
to a particular futures contract at a particular time.  If the Fund is not able
to enter into an offsetting transaction, the Fund will continue to be required
to maintain the margin deposits on the futures contract.

     The value of a futures contract tends to increase and decrease in tandem
with the value of its underlying instrument.  Therefore, purchasing futures
contracts will tend to increase the Fund's exposure to positive and negative
price fluctuations in the 

                                     15

<PAGE>   48


underlying instrument, much as if it had purchased the underlying instrument
directly.  When the Fund sells a futures contract, by contrast, the value of
its futures position will tend to move in a direction contrary to the market. 
Selling futures contracts, therefore, will tend to offset both positive and
negative market price changes, much as if the underlying instrument had been
sold.

     A public market exists in futures contracts covering various fixed income
securities (including long-term U.S. Treasury Bonds, 10-year U.S. Treasury
Notes, Government National Mortgage Association modified pass-through
mortgage-backed certificates, three-month U.S. Treasury Bills, and 90-day
commercial paper), as well as municipal bonds and related indices.  The Fund
reserves the right to effect transactions in other securities and indices which
may be developed in the future.


LIMITATIONS ON FUTURES AND OPTIONS TRANSACTIONS

     The Fund will engage in transactions in options, futures contracts and
options thereon only for bona fide hedging and risk management purposes, in
each case in accordance with the rules and regulations of the Commodity Futures
Trading Commission, and not for speculation.

     The Fund will not enter into any futures contract or option on a futures
contract if, as a result, the sum of initial margin deposits on futures
contracts and related options and premiums paid for options on futures
contracts the Fund has purchased, after taking into account unrealized profits
and unrealized losses on such contracts, would exceed 5% of the Fund's total
assets; provided, however, that in the case of an option which is in-the-money
at the time of purchase, the in-the-money amount may be excluded in calculating
the 5% limitation.  In addition to the above limitations, the Fund will not:
(a) purchase or sell futures and options on futures or enter into closing
transactions with respect thereto if, as a result thereof, the then current
aggregate futures market prices and financial instruments required to be
delivered under open futures contract sales plus the then current aggregate
purchase price of financial instruments required to be purchased under open
futures contract purchases would exceed 20% of the Fund's net assets (taken at
market value at the time of entering into the contract and excluding the amount
by which any 

                                     16

<PAGE>   49

of its options on futures are in-the-money); (b) the aggregate value of all
premiums paid for put options purchased by the Fund would exceed 5% of the
Fund's total assets (less the amount by which any such positions are
in-the-money; or (c) the aggregate market value of all portfolio securities
covering call options written by the Fund would exceed 20% of the Fund's total
assets.  The above limitations on the Fund's investments in futures contracts
and options and the policies regarding futures contracts and options discussed
elsewhere in this Statement of Additional Information are not fundamental
policies of the Fund and may be changed by Heartland's Board of Directors as    
permitted by applicable regulatory authority.

     Combined Positions.  The Fund may purchase and write options in
combination with each other, or in combination with futures contracts, to
adjust the risk and return characteristics of the overall position.  For
example, the Fund may purchase a put option and write a call option on the same
underlying instrument in order to construct a combined position whose risk and
return characteristics are similar to selling a futures contract.  Another
possible combined position would involve writing a call option at one exercise
price and buying a call option at a lower price, in order to reduce the risks
of the written call option in the event of a substantial price increase. 
Because combined positions involve multiple trades, they may result in higher
transaction costs and may be more difficult to open and close out.
        

RISKS IN OPTIONS AND FUTURES TRANSACTIONS

     Options and futures can be highly volatile investments and involve certain
risks.  A decision of whether, when, and how to hedge involves skill and
judgment, and even a well-conceived hedge may be unsuccessful to some degree
because of unexpected market behavior, or market or interest rate trends.
Successful hedging strategies require the ability to predict future movements
in securities prices, interest rates and other economic factors.  There can be
no assurance that price movements in a hedging vehicle and in the underlying
securities will be directly correlated.  Options and futures prices are
affected by such factors as current and anticipated short-term interest rates,
changes in volatility of the underlying instrument, and the time remaining
until expiration of the contract, which may not affect security 

                                     17

<PAGE>   50

prices the same way.  Imperfect correlation may also result from different
levels of demand in the options and futures markets and the securities markets,
from structural differences in how options and futures and securities are
traded, or from imposition of daily price fluctuation limits or trading halts
by an exchange. If price changes in the Fund's options or futures positions are
poorly correlated with its other investments, the positions may fail to produce
anticipated gains or result in losses that are not offset by gains in other     
investments.

     The risks of poor correlation may be increased for the Fund because
available exchange-traded options and standardized futures contracts will not
match the Fund's current or anticipated investments exactly.  For example, even
the use of an option or a futures contract on a municipal bond index may result
in an imperfect correlation since the index generally will be composed of a
much broader range of municipal securities then the Tax Exempt Obligations in
which the Fund will be invested, which are limited to securities exempt from
federal income tax and Wisconsin personal income tax.  To the extent that the
Fund's hedging vehicles do not match its current or anticipated investments,
there is an increased risk that the options or futures positions will not track
the performance of the Fund's other investments.

     Because of the low margin deposits required, futures trading involves a
high degree of leverage.  A relatively small price movement in futures
contracts could result in an immediate and substantial gain or loss to the
Fund.  Therefore, a purchase or sale of a futures contract may result in losses
in excess of the amount invested in the futures contract by the Fund.

     There can be no assurance that a liquid secondary market will exist for
any particular options or futures contracts at any particular time.  On
volatile trading days when the price fluctuation limit is reached or a trading
halt is imposed, it may be impossible for the Fund to enter into new positions
or close out existing positions.  If the secondary market for a futures
contract is not liquid because of price fluctuation limits or otherwise, it
could prevent prompt liquidation of unfavorable positions, and potentially
require the Fund to continue to hold the position until delivery or expiration
regardless of changes in its value.  As a result, the Fund's access to other
assets held to cover its options or futures positions could also be impaired.

                                     18

<PAGE>   51

DIVERSIFICATION

     The number of issues of securities which meet the Fund's investment
objective and criteria may be somewhat limited.  As a result, a relatively high
percentage of the Fund's assets may be invested from time to time in the
obligations of a limited number of issuers, some of which may be subject to the
same economic trends and/or be located in the same geographic area.  The Fund's
portfolio securities may therefore be more susceptible to any single economic,
political or regulatory occurrence than the portfolio securities of diversified
investment companies.

     The Fund will operate as a non-diversified management investment company
under the 1940 Act, but intends to comply with the diversification requirements
contained in the Internal Revenue Code of 1986.  These provisions of the
Internal Revenue Code presently require that, at the end of each quarter of the
Fund's taxable year:  (i) at least 50% of the market value of the Fund's assets
must be invested in cash, government securities, the securities of other
regulated investment companies and other securities, with such other securities
of any one issuer limited for the purposes of this calculation to an amount not
greater than 5% of the value of the Fund's total assets; and (ii) not more than
25% of the value of the Fund's total assets can be invested in the securities
of any one issuer (other than government securities or the securities of other
regulated investment companies).

     For purposes of such diversification, the identification of the issuer of
Tax Exempt Obligations depends on the terms and conditions of the security.  If
a state or territory of the United States or the District of Columbia, or a
political subdivision of any of them, as the case may be, pledges its full
faith and credit to payment of a security, the guarantor is deemed the sole
issuer of the security.  If the assets and revenues of an agency, authority or
instrumentality of a state or territory of the United States or the District of
Columbia, or a political subdivision of any of them, are separate from those of
the state, territory, District or political subdivision, and the security is
backed only by the assets and revenues of the agency, authority or
instrumentality, such agency, authority or instrumentality is deemed to be the
sole issuer of the security. Moreover, if the security is backed only by
revenues of an enterprise or specific projects of 

                                     19

<PAGE>   52


the state, territory or District, or a political subdivision or agency,
authority or instrumentality thereof, such as utility revenue bonds, and the
full faith and credit of the governmental unit is not pledged to the payment of
principal and interest on the obligation, such enterprise or specific project
is deemed the sole issuer.  Similarly, in the case of an industrial development
bond, if that bond is backed only by certain revenues to be received from the
non-governmental user of the project financed by the bond, then such
non-governmental user is deemed to be the sole issuer. If, however, in any of
the above cases, a state, territory or the District, or a political subdivision
of any of them, or some other entity, guarantees a security and the value of
all securities issued or guaranteed by the guarantor and owned by the Fund
exceeds 10% of the value of the Fund's total assets, the guarantee is
considered a separate security and is treated as an issue of the guarantor.
        
     Health Care Obligations.  The Fund may invest, from time to time, 25% or
more of its total assets in obligations issued by public bodies, including
state and municipal authorities, to finance hospital or health care facilities
or equipment.  The ability of any subject health care entity or hospital to
make payments in amounts sufficient to pay maturing principal and interest
obligations is dependent, among other things, upon the revenues, costs and
occupancy levels of the subject health care entity or hospital.  Revenues and
expenses of hospitals and health care facilities will be affected by future
events and conditions relating generally to, among other things, demand for
health care services at the particular type of facility, increasing costs of
medical technology, utilization practices of physicians, the ability of the
facilities to provide the services required by patients, employee strikes and
other adverse labor actions, economic developments in the service area,
demographic changes, greater longevity and the higher medical expenses of
treating the elderly, increased competition from other health care providers
and rates that can be charged for the services provided.  Additionally, a major
portion of hospital revenues typically is derived from federal or state
programs such as Medicare and Medicaid and from other insurers.  The future
solvency of the Medicare trust fund is periodically subject to question. 
Changes in the compensation and reimbursement formulas of these governmental
programs or in the rates of insurers may reduce revenues available for the
payment of principal of or interest on 

                                     20

<PAGE>   53


hospital revenue bonds.  Governmental legislation or regulations and other
factors, such as the inability to obtain sufficient malpractice insurance, may
also adversely impact upon the revenues or costs of hospitals.  Future actions
by the federal government with respect to Medicare and by the federal and state
governments with respect to Medicaid, reducing the total amount of funds
available for either or both of these programs or changing the reimbursement
regulations or their interpretation, could adversely affect the amount of
reimbursement available to hospital facilities.  A number of additional
legislative proposals concerning health care are typically under review by the
United States Congress at any given time.  These proposals span a wide range of
topics, including cost controls, national health insurance, incentives for
competition in the provision of health care services, tax incentives and
penalties related to health care insurance premiums and promotion of prepaid 
health care plans.
        
GEOGRAPHIC CONCENTRATIONS

     The following information is a brief summary of factors affecting
Wisconsin and Puerto Rico (certain jurisdictions in which the Fund invests) and
does not purport to be a complete description of such factors.

     Factors Affecting Wisconsin.  Wisconsin's economy, although fairly
diverse, is primarily concentrated in the services industry (accounting for
approximately 25% of total non-farm employment) and secondarily in the
manufacture of durable goods and retail.  Federal, state and local government
in Wisconsin is also a major employer.  The top five products made in Wisconsin
are dairy products, motor vehicles, paper, meat products and small engines.

   
     Wisconsin continues to outperform the national economy.  Wisconsin's
unemployment rate has been below the national average for the past nine years.
In August 1996, the state's unemployment rate was 3.5%, compared to a national
unemployment rate of approximately 5.4%.  The state is highly ranked in terms
of job creation, especially in the creation of manufacturing jobs.  Since 1987,
the state's personal income tax rate has been reduced from 7.9% to 6.93%, and
the current Governor, Tommy G. Thompson, has expressed his desire to implement
further reductions.  At the same time, state spending has been controlled, with
balanced budgets experienced in each of the last nine years.  Personal income
in 
    
        
                                     21

<PAGE>   54

Wisconsin continues to increase at a rate above that of the national average.

           
     It is anticipated that the Wisconsin economy will expand in 1997 at a
somewhat slower pace than in recent years, with the state's labor market
expected to remain tight during those years.
    

     Wisconsin has an extremely diverse revenue-raising structure. More than
one-third of its total revenue is derived from the various taxes levied by the
State.  The remainder comes from the federal government and from various kinds
of fees, licenses, permits and service charges paid by users of specific
services, privileges or facilities.  Wisconsin's tax structure has a diverse
underlying base consisting of income, general and special product sales,
transfer of wealth and property value.  About one-third of all taxes collected
by the State of Wisconsin is returned to local units of government.  The
remaining funds are used for state operations and aid to individuals and
organizations.  The combined operations of three state agencies (Department of
Health and Social Services, Department of Public Instruction and the University
of Wisconsin System) account for more than 50% of total state expenditures.

     Wisconsin has the authority to increase appropriations from or reduce
taxes below levels established in its budget.  In recent years, Wisconsin has
adopted appropriation measures subsequent to passage of its budget act.
However, it has been the State's policy that supplemental appropriations
adopted by the State Legislature must be within revenue projections for the
relevant fiscal period or balanced by reductions in other appropriations.  The
spending from additional appropriations historically has been matched by
reduced disbursements, increased revenues or a combination of the two.

     Wisconsin has experienced and anticipates it will continue to experience
certain periods when its general fund is in a negative cash position.  State
statutes provide certain administrative remedies to deal with these periods.
The Secretary of Administration may temporarily reallocate up to $400 million
of available cash in other funds to the general fund.  The Secretary of
Administration may set priorities for payments from the general fund as well as
pro rate certain payments.  State statutes mandate that all payments must be in
accordance with the following order 

                                     22

<PAGE>   55

of preference:  (a) all direct and indirect payments of principal and interest
on Wisconsin general obligation debt must have first priority and may not be
pro rated or reduced; (b) all direct and indirect payments of principal and
interest on operating notes must take second priority and may not be pro rated
or reduced; (c) all Wisconsin employee payrolls must take third priority, but
may be pro rated or reduced; and (d) all other payments are paid in a priority
determined by the Secretary of Administration and may be pro rated or reduced.
        
   
     As a result of certain government initiatives, the December 1996 property
tax bills decreased statewide by 6.8%.  Governor Thompson's 1997-99 budget
indicates that additional initiatives are expected to decrease 1997 property
taxes by approximately an additional 1.7%.  It is not clear what effect, if
any, such property tax relief will have on the Fund's investments or prospects.
    

     Factors Affecting Puerto Rico.  The Fund may invest in obligations of the
Commonwealth of Puerto Rico and its political subdivisions, agencies and
instrumentalities, that qualify as Tax Exempt Obligations.  The majority of
Puerto Rico's debt is issued by 10 of the major public agencies that are
responsible for many of its public functions, such as water, wastewater,
highways, telecommunications, education and public construction.

   
     The Puerto Rico economy generally parallels the economic cycles of the
United States, as most goods are imported from the U.S.  Interest rates also
generally mirror those of the United States.  The Puerto Rico economy over the
past few decades has been dominated by capital-intensive manufacturing
industries such as pharmaceuticals and chemicals, instruments, electronics,
apparel, food products and machinery.  Additional major economic sectors
include government, trade and services.  High-tech economic sectors have shown
steady growth, while labor-intensive industries are generally declining.  The
unemployment rate has remained at approximately 14% to 16% during the past few
years, and is expected to remain at such levels over the short-term.
    



                                     23
<PAGE>   56


   
     Puerto Rico's economy historically has benefited from tax incentives
contained in Section 936 of the Internal Revenue Code, which allows U.S.
domestic corporations with a substantial amount of their business operations in
Puerto Rico to claim a tax credit that effectively eliminates their U.S. income
tax on income from those operations.  The enactment of the Omnibus Budget
Reconciliation Act of 1993 imposed certain limitations on the amount of the
credit available to domestic corporations.  Legislation passed in 1996 further
reduces these tax incentives, with a general phaseout of the credit by the year
2006.  It is impossible to predict with certainty what effect the elimination
of the Section 936 credit will have on the business operations of U.S.
corporations in Puerto Rico; however, it is likely to lessen Puerto Rico's
competitive advantage, especially in attracting new businesses to the
Commonwealth.
    

   
     Factors Affecting Guam.  Guam, the westernmost territory of the U.S., is
located 3,700 miles to the west of Hawaii and 1,500 miles southeast of Japan.
Guam's economy is heavily dependent upon the U.S. military and tourism,
particularly from Japan.  Employment in Guam is concentrated in the public
sector.  Major private sector employment categories include construction, trade
and services.  While Guam has been slated for U.S. military reductions, it is
unclear whether plans to increase tourism may succeed in limiting the negative
effects of such reductions.  The government of Guam has taken steps to improve
its financial position; however, there can be no assurances that an improvement
will be realized.
    

LIMITATION ON SIZE OF THE FUND

     The Fund may impose a limit on its size, which would have the effect of
limiting purchases by persons other than existing shareholders.  Such a
limitation would not affect dividend reinvestments and purchases of additional
shares by persons who are already shareholders of the Fund when the limit is
imposed.  Such a limitation may be imposed if Heartland Advisors, as investment
advisor, believes that the available supply of securities suitable for the
Fund's portfolio is limited or for other reasons.

     As the Fund's net assets approached $50 million, Heartland's Board of
Directors determined that an adequate supply of suitable 

                                     24

<PAGE>   57


securities existed to permit the Fund to continue accepting purchases by new
shareholders.  The Fund's net assets are currently in excess of $100 million
and the Board will continue to monitor the size of the Fund.  Factors that the
Board will consider in determining whether to continue to accept purchases
from new shareholders of the Fund include the availability of an adequate
supply of securities of suitable quality for the Fund's portfolio, adequate
diversification of portfolio holdings, and the liquidity of the portfolio's
holdings.

     If the Board determines to discontinue accepting purchases of the Fund's
shares from persons other than existing shareholders, the Fund will mail a
written notice of that fact to its existing shareholders at least ten (10) days
prior to the effective date of the limitation.  When the Board determines to
again accept purchases from new shareholders, it will mail written notice of
that fact to the Fund's existing shareholders no later than the first day it
again commences accepting such purchases.  If the Fund were to close to new
investors and the amount of new money flowing into the Fund were to decrease,
there is a risk that redemptions by existing shareholders might require the
Fund to liquidate a portfolio position at an inopportune time in order to
effect the redemption.


PORTFOLIO TURNOVER

   
     Portfolio turnover for the Fund is the ratio of the lesser of annual
purchases or sales of portfolio securities by the Fund to the average monthly
value of portfolio securities owned by the Fund, not including securities
maturing in less than 12 months.  A 100% portfolio turnover rate would occur,
for example, if the lesser of the value of purchases or sales of the Fund's
portfolio securities for a particular year were equal to the average monthly
value of the portfolio securities owned by the Fund during the year. The
portfolio turnover rate for the Fund for each of the fiscal years ended
December 31, 1996 and 1995 was 14% and 11%, respectively.
    

                                     25

<PAGE>   58

                            INVESTMENT RESTRICTIONS

     The Fund has adopted the following investment restrictions, which are
fundamental policies that cannot be changed without the approval of the holders
of the lesser of:  (i) a majority of the outstanding shares of the Fund; or
(ii) 67% of the shares represented at a meeting of shareholders at which the
holders of 50% or more of the outstanding shares of the Fund are represented.
Any investment restriction which involves a maximum percentage of securities or
assets will not be considered to be violated unless an excess over the
percentage occurs immediately after, and is caused by, an acquisition of
securities or assets of, or borrowing by, the Fund.  The Fund may not:

     (1) Purchase more than 10% of the outstanding voting securities of an
issuer, or invest in a company to get control or manage it.

     (2) Invest more than 25% of its total assets, based on current market
value at the time of purchase, in securities of issuers in any single industry;
provided that there shall be no such limitation on the purchase of Tax-Exempt
Obligations, housing obligations and securities issued or guaranteed by the
United States Government, its agencies or instrumentalities.

     (3) Purchase securities of other investment companies if, as a result,
more than 10% of the value of the Fund's assets would be so invested; provided
that no investment will be made in the securities of any investment company if,
immediately after such investment, more than 3% of the outstanding voting
securities of such company would be owned by the Fund or more than 5% of the
value of the Fund's total assets would be invested in such company; provided
further, that no such restriction shall apply to a purchase of investment
company securities in connection with a merger, consolidation, acquisition or
reorganization.

     (4) Borrow money or property except for temporary or emergency purposes.
If the Fund ever should borrow money it would only borrow from banks and in an
amount not exceeding 10% of the market value of its total assets (not including
the amount borrowed).  The Fund will not pledge more than 10% of its net assets
to secure such borrowings.  In the event the Fund's borrowings exceed 5% of the
market value of its total assets, the 

                                     26

<PAGE>   59


Fund will not invest in any additional portfolio securities until its
borrowings are reduced to below 5% of its total assets.

     (5) Make loans, except that the Fund may:  (i) acquire publicly
distributed bonds, debentures, notes and other debt securities in which the
Fund may invest consistent with its investment policies described in the
Prospectus; (ii) lend portfolio securities, provided that no such loan may be
made if as a result the aggregate of such loans would exceed 30% of the value
of the Fund's total assets; and (iii) through repurchase agreements.

     (6) Underwrite the securities of other issuers except where it might
technically be deemed to be an underwriter for purposes of the Securities Act
of 1933 upon the disposition of certain securities.

     (7) Issue senior securities.

     (8) Buy or sell real estate.

     (9) Buy or sell commodities.

     (10) Invest in a security if, as a result thereof, more than 25% of the
Fund's total assets would be invested in a single issuer, other than securities
issued or guaranteed by the United States government, or a state or territory
of the United States, or the District of Columbia, or their agencies,
instrumentalities, municipalities or political subdivisions.

     (11) Invest in:  (i) securities which, in the opinion of Heartland
Advisors, as the Fund's advisor, are not, at the time of such investment,
readily marketable; (ii) securities the disposition of which is restricted
under federal securities laws (as described in nonfundamental restriction (c)
below); or (iii) repurchase agreements maturing in more than seven days, if, as
a result, more than 10% of the Fund's net assets (taken at current value) would
be invested in securities described in clauses (i), (ii) and (iii) of this
restriction (11).

     In addition to the foregoing fundamental restrictions, Heartland's Board
of Directors has adopted the following restrictions for the Fund, which may be
changed without shareholder 

                                       27

<PAGE>   60


approval, in order to comply with the securities laws of various states.  The
Fund may not:
        
     (a) Invest more than 5% of its total assets in securities of companies
which, including any predecessors, have a record of less than three years of
continuous operations.

     (b) Buy or sell real estate investment trusts, or oil and gas interests,
but this shall not prevent the Fund from investing in securities of companies
whose business involves the purchase or sale of real estate, except that the
Fund will not invest in real estate limited partnerships.

     (c) Except with respect to investments in repurchase agreements, purchase
securities with legal or contractual restrictions on resale if, as a result of
such purchase, such investments would exceed 5% of the value of the Fund's net
assets.

     (d) Purchase securities on margin or effect short sales of securities,
except as required in connection with permissible options and futures
activities as described elsewhere in the Prospectus and Statement of Additional
Information.

     (e) Purchase or retain the securities of any issuer if the officers,
directors, advisors or managers of the Fund owning  beneficially more than one
and one-half of one percent of the securities of such issuer together own
beneficially 5% of such securities; provided no officer or director shall be
deemed to own beneficially securities held in other accounts managed by such
person or held in employee or similar plans for which such person acts as
trustee.

     For the Fund's limitations on futures and options transactions, see
"Investment Objective and Policies - Limitations on Futures and Options
Transactions."


                                   MANAGEMENT

     The Board of Directors of Heartland provides broad supervision over the
affairs of the Fund, and the officers are responsible for its operations.  The
Directors and officers are listed below, together with their principal
occupations during the 

                                     28

<PAGE>   61

past five years.  Subject to the direction of the Board of Directors, Heartland
Advisors is responsible for investment management of the assets of the Fund.
        
   

                                                    Principal
                                                    Occupation
                            Position with        During Past Five
Name and Address              Heartland               Years
- ----------------         --------------------  --------------------
William J. Nasgovitz     President and         President and        
790 N. Milwaukee St.     Director*             Director, Heartland  
Milwaukee, WI  53201                           Advisors, Inc.,      
                                               since 1982; Senior   
                                               Vice President-      
                                               Investments, Dain    
                                               Bosworth             
                                               Incorporated from    
                                               1988 to June 1992;   
                                               Director of Capital  
                                               Investments, Inc.,   
                                               since 1989 (small    
                                               business investment  
                                               company).            
                                               
Willard H. Davidson      Director              Financial and
3726 N. Lake Drive                             business consultant
Milwaukee, WI  53211                           since 1984; prior
                                               thereto, Chairman
                                               and a Director,
                                               Marine Corporation
                                               (a bank holding
                                               company) and Marine
                                               Bank, N.A.

Hugh F. Denison          Director*             Vice President and
790 N. Milwaukee St.                           a Director,
Milwaukee, WI  53201                           Heartland Advisors,
                                               Inc. since 1988.

Jon D. Hammes            Director              President, The
Suite 305                                      Hammes Company,
18000 West Sarah Lane                          since 1991; prior
Brookfield, WI  53045                          thereto, Managing
                                               Partner, Trammell,
                                               Crow Co.
    

                                     29

<PAGE>   62


Patrick J. Retzer        Vice President,       Vice President and
790 N. Milwaukee St.     Treasurer and         Treasurer,
Milwaukee, WI  53201     Director*             Heartland Advisors,
                                               Inc. since 1987;
                                               Director of
                                               Heartland Advisors,
                                               Inc. since 1988.

A. Gary Shilling         Director              President, A. Gary
500 Morris Avenue                              Shilling & Company,
Springfield, NJ  07081                         Inc. (economic
                                               consultants and
                                               investment
                                               advisors), since
                                               1978.

Linda F. Stephenson      Director              President and Chief
100 E. Wisconsin Avenue                        Executive Officer,
Milwaukee, WI  53202                           Zigman Joseph
                                               Stephenson (a
                                               public relations
                                               and marketing
                                               communications
                                               firm), since 1989.

Lois Schmatzhagen        Secretary             Secretary, Heartland
790 N. Milwaukee St.                           Advisors, Inc. since
Milwaukee, WI  53201                           1988.

___________________

     *Directors who are "Interested Persons" (as defined in the Investment
Company Act of 1940) of Heartland Advisors.

                                     30

<PAGE>   63


     Heartland pays the compensation of the four Directors who are not
officers, directors or employees of Heartland Advisors.  The following
compensation was paid to those Directors for their services during the fiscal
year ended December 31, 1996:

   
<TABLE>
<CAPTION>
                                                                              TOTAL
                                                                          COMPENSATION
                         AGGREGATE      PENSION OR   ESTIMATED ACTUAL     FROM HEARTLAND 
                     COMPENSATION FROM  RETIREMENT    BENEFITS UPON         AND FUND 
     DIRECTOR           HEARTLAND       BENEFITS       RETIREMENT            COMPLEX
- -------------------  -----------------  ----------   ----------------    --------------
<S>                    <C>                <C>          <C>                  <C>
Willard H. Davidson     $7,000              None       None                  $7,000
Jon D. Hammes           $7,000              None       None                  $7,000
A. Gary Shilling        $7,000              None       None                  $7,000
Linda F. Stephenson     $7,000              None       None                  $7,000
</TABLE>
    

             CONTROL PERSONS AND PRINCIPAL HOLDERS OF SECURITIES

   
     As of March 31, 1997, the directors and officers of Heartland, as a group
(8 persons), owned beneficially less than 1% of the shares of the Fund.  As of
that date, no person was known to own, of record or beneficially, as much as
five percent (5%) of the outstanding shares of the Fund.
    

                            THE INVESTMENT ADVISOR

   
     The Fund is managed by Heartland Advisors pursuant to an Investment
Advisory Agreement (the "Agreement").  The Agreement was approved most recently
on behalf of the Fund by the Board of Directors, including a majority of the
Directors who are not interested persons of the Fund or of Heartland Advisors,
on July 31, 1996.  Heartland Advisors also serves as distributor for the Fund.
    

   
     Heartland Advisors is controlled by William J. Nasgovitz, the President
and a Director of Heartland, by virtue of his ownership of a majority of its
outstanding capital stock.  Heartland Advisors, founded in 1982, serves as the
investment advisor for the Heartland Small Cap Contrarian, Value, Mid Cap
Value, Large Cap Value, Value Plus, U.S. Government Securities,
    

                                      31

<PAGE>   64

   
Short Duration High-Yield Municipal and High-Yield Municipal Bond Funds, eight
additional series of Heartland, and also provides investment management services
for individuals, and institutional accounts, such as pension funds and
profit-sharing plans.  As of March 31, 1997, Heartland Advisors had
approximately $3.1 billion in assets under management.  Mr. Nasgovitz intends to
retain control of Heartland Advisors through the continued ownership of a
majority of its outstanding voting stock.
    
        
     Pursuant to the Agreement, Heartland Advisors provides each Fund with
overall investment advisory and administrative services.  Subject to such
policies as the Board of Directors of Heartland may determine, Heartland
Advisors makes investment decisions on behalf of the Fund, makes available
research and statistical data in connection therewith, and supervises the
acquisition and disposition of investments by the Fund, including the selection
of broker-dealers to carry out portfolio transactions.  Heartland Advisors will
permit any of its officers or employees to serve without compensation from the
Fund as directors or officers of Heartland if elected to such positions.

   
     Heartland Advisors bears all of its own expenses in providing services
under the Agreement and pays all salaries, fees and expenses of the officers
and directors of the Fund who are affiliated with Heartland Advisors.  The Fund
bears all its other expenses including, but not limited to, necessary office
space, telephone and other communications facilities and personnel competent to
perform administrative, clerical and shareholder relations functions; a pro
rata portion of salary, fees and expenses (including legal fees) of those
directors, officers and employees of Heartland who are not officers, directors
or employees of Heartland Advisors; interest expenses; fees and expenses of the
Custodian, Agent and Dividend Disbursing Agent; fees of shareholder
recordkeeping agents; taxes and governmental fees; brokerage commissions and
other expenses incurred in acquiring or disposing of portfolio securities;
expenses of registering and qualifying shares for sale with the Securities and
Exchange Commission and state securities commissions; accounting and legal
costs; insurance premiums; expenses of maintaining the Fund's legal existence
and of shareholders' meetings; expenses of preparation and distribution to
existing shareholders of reports, proxies and prospectuses; and fees and
expenses of membership in industry organizations.
    

                                      32

<PAGE>   65

   
     The Fund pays Heartland Advisors an annual fee (payable in monthly
installments) for its services at the rate of 0.65 of 1% of the Fund's average
daily net assets.  For the fiscal years ended December 31, 1996, 1995 and 1994,
the Wisconsin Fund paid advisory fees of $789,698, $728,848 and $704,918,
respectively.
    

   
     The Agreement provides that Heartland Advisors' fee will be reduced, or
that Heartland Advisors will reimburse the Fund (up to the amount of its fee),
by an amount necessary to prevent the total expenses of the Fund (excluding
taxes, interests, brokerage commissions or transactions costs, distribution
fees and extraordinary expenses) from exceeding limits applicable to the Fund
in any state in which its shares are then qualified for sale.  No state in
which shares of the Fund are qualified for sale has such an expense limitation.
    

     The Agreement will continue in effect from year to year, as long as it is
approved at least annually by Heartland's Board of Directors or by a vote of
the outstanding voting securities of the Fund, and in either case by a majority
of the Directors who are not parties to the Agreement or interested persons of
any such party.  The Agreement terminates automatically if it is assigned and
may be terminated without penalty by either party on not more than 60 nor less
than 30 days' notice.  The Agreement provides that neither Heartland Advisors
nor its personnel shall be liable for any error of judgment or mistake of law
or for any loss arising out of any investment or for any act or omission in the
execution and management of the Fund, except for willful misfeasance, bad faith
or gross negligence in the performance of its duties or by reason of reckless
disregard of its obligations and duties under the Agreement.


                                      33



<PAGE>   66


                            PERFORMANCE INFORMATION

General.

     From time to time the Fund may advertise "yield," "taxable equivalent
yield," "average annual total return" and "cumulative total return."  Yield is
based on historical earnings and total return is based on historical
distributions; neither is intended to indicate future performance.  The "yield"
of the Fund refers to the income generated by an investment in the Fund over a
one-month period (which period will be stated in the advertisement).  This
income is then "annualized."  That is, the amount of income generated by the
investment during the month is assumed to be generated each month over a
twelve-month period and is shown  as a percentage of the investment.  "Total
return" of the Fund refers to the annual average return for 1, 5 and 10-year
periods (or the portion thereof during which the Fund has been in existence).
Total return is the change in redemption value of shares purchased with an
initial $1,000 investment, assuming the reinvestment of dividends and capital
gain distributions, after giving effect to the maximum applicable sales charge.

     Performance information should be considered in light of the Fund's
investment objective and policies, characteristics and quality of its portfolio
securities and the market conditions during the applicable period, and should
not be considered as a representation of what may be achieved in the future.
Investors should consider these factors and possible differences in the methods
used in calculating performance information when comparing the Fund's
performance to performance figures published for other investment vehicles.

Yield.

     Yield quotations are based on a 30-day (or one-month) period, and are
computed by dividing the net investment income per share earned during the
period by the maximum offering price per share on the last day of the period,
according to the following formula:

                                      34

<PAGE>   67

                                     a-b      6
                          Yield = 2[(---- + 1) - 1]
                                      cd

     Where:

                a =  dividends and interest earned during the period;

                b =  expenses accrued for the period (net of reimbursements);

                c =  the average daily number of shares outstanding during the
                     period that were entitled to receive dividends; and

                d =  the maximum offering price per share on the last day of 
                     the period.


   
     The yield for the Fund for the month ended December 31, 1996 was 5.14%.
When advertising yield, the Fund will not advertise a one-month or a 30-day
period which ends more than 45 days before the date on which the advertisement
is published.
    

Taxable Equivalent Yield.

   
     Taxable equivalent yield is computed by dividing that portion of the yield
of the Fund (as computed above) which is tax-exempt by one minus a stated
income tax rate and adding the product to that portion, if any, of the yield of
such Fund that is not tax-exempt.  Based upon a combined Wisconsin rate of 6.9%
and a federal tax rate of 39.6%, adjusted to reflect the deductibility of state
taxes, resulting in an effective combined rate of 43.79%, the taxable
equivalent yield for the Fund for the 30 days ended December 31, 1996 was
9.14%.
    

Total Return.

     Average annual total return is computed by finding the average annual
compounded rates of return over the 1, 5 and 10-year periods (or the portion
thereof during which the Fund has been in operation) ended on the date of the
Fund's balance sheet that would equate the initial amount invested to the
ending redeemable value, according to the following formula:

                                      35

<PAGE>   68


                                        n
                                P(1 + T) = ERV

     Where:


                   P =  a hypothetical initial payment of $1,000;

                   T =  average annual total return;

                   n =  number of years; and

                 ERV =  ending redeemable value for a hypothetical $1,000 
                        payment made at the beginning of the 1, 5 and 10-year
                        periods at the end of the 1, 5 and 10-year period (or 
                        fractional portion thereof).

     This calculation assumes all dividends and capital gain distributions are
reinvested at net asset value on the appropriate reinvestment dates as
described in the Prospectus, and includes all recurring fees, such as
investment advisory and management fees, charged as expenses to all shareholder
accounts. A sales load of 3% was charged with respect to purchases of shares of
the Fund prior to June 1, 1994, which is not reflected in the total return
figures.

   
     The average annual total return for the Fund for the one-year period
ending December 31, 1996 was 3.81%, and for the period from April 3, 1992
(commencement of operations) to December 31, 1996 was 6.29%.
    



                                      36
<PAGE>   69


Cumulative Total Return.

     Cumulative total return is computed by finding the cumulative compounded
rate of return over the period indicated in the advertisement that would equate
the initial amount invested to the ending redeemable value, according to the
following formula:

                               CTR=(ERV-P) 100
                                    -----
                                      P

     Where:

             CTR = Cumulative Total Return;

             ERV = Ending redeemable value at the end of the
                   period of a hypothetical $1,000 payment made
                   at the beginning of the period;

             P   = Initial payment of $1,000.

     This calculation assumes all dividends and capital gain distributions are
reinvested at net asset value on the appropriate reinvestment dates as
described in the Prospectus, and includes all recurring fees, such as
investment advisory and management fees, charged as expenses to all shareholder
accounts. A sales load of 3% was charged with respect to purchases of shares of
the Fund prior to June 1, 1994, which is not reflected in the total return
figures.

   
     The cumulative total return for the Fund for the one-year period ending
December 31, 1996 was 3.81% and for the period from April 3, 1992 (commencement
of operations) to December 31, 1996 was 33.59%.
    


                   DETERMINATION OF NET ASSET VALUE PER SHARE

     The Fund's shares are sold at their next determined net asset value per
share.  The Fund determines the net asset value per share by subtracting its
liabilities (including accrued expenses and dividends payable) from its total
assets (the value of the securities the Fund holds plus cash or other assets,

                                      37

<PAGE>   70


including interest accrued but not yet received) and dividing the result by the
total number of shares outstanding.

     The next determined net asset value per share will be calculated for the
Funds as of the close of the New York Stock Exchange regular trading (generally
4:00 p.m. New York time) at least once every weekday, Monday through Friday,
except on:  (i) customary national business holidays which result in the
closing of the New York Stock Exchange, which are New Year's Day, Washington's
Birthday, Good Friday, Memorial Day, Independence Day, Labor Day, Thanksgiving
and Christmas; (ii) days when no security is tendered for redemption and no
customer order is received; or (iii) days when changes in the value of the
investment company's portfolio securities do not affect the current net asset
value of the Fund's redeemable securities.  Portfolio securities will be valued
as described in the Prospectus for the purpose of calculating net asset value
on any day.


                             DISTRIBUTION OF SHARES

     Heartland Advisors, the Fund's investment advisor, also acts as the
distributor of the shares of all of the Heartland funds, including the Fund.
Heartland Advisors has agreed to use its "best efforts" to distribute the
Fund's shares, but has not committed to purchase or sell any specific number of
shares.  The Distribution Agreement for the Fund is renewable annually by the
vote of the Directors at a meeting called for such purpose and may be
terminated upon 60 days written notice by either party.  The Distribution
Agreement will automatically terminate in the event of its assignment.  Under
the Distribution Agreement, Heartland Advisors, as distributor, will pay for
the costs and expenses of preparing, printing and distributing materials not
prepared by the Fund and used by Heartland Advisors in connection with its
offering of shares for sale to the public, including the additional costs of
printing copies of the prospectus and of annual and interim reports to
shareholders other than copies required for distribution to shareholders or for
filing under the federal securities laws, and any expenses of advertising
incurred by Heartland Advisors in connection with the offering of the shares.

                                      38

<PAGE>   71

   
     For the fiscal years ended December 31, 1996, 1995 and 1994, the aggregate
amount of underwriting commissions paid with respect to the Wisconsin Fund were
$0, $0 and $403,694, respectively, of which Heartland Advisors retained $0, $0,
and $104,505, respectively.
    

                                   TAX STATUS


     The information in this section supplements the discussion of applicable
taxes found in the Prospectus (see "DIVIDENDS, DISTRIBUTIONS AND TAXES").

     Each series of a series company, such as Heartland, is treated as a single
entity for federal income tax purposes, so that the net realized capital gains
and losses of one series are not combined with those of another series in the
same company.

     Gain or loss on the sale of securities held by the Fund for more than one
year will generally be long-term capital gain or loss.  Gain or loss on the
sale of securities held for one year or less will be short-term capital gain or
loss.

     If a shareholder exchanges shares of one Heartland fund for shares of
another Heartland fund, the shareholder will recognize gain or loss for federal
income tax purposes.  That gain or loss will be measured by the difference
between the shareholder's basis in the shares exchanged and the value of the
shares acquired.

     It is possible that the Fund's income dividends may, to the extent such
dividends consist of interest from obligations of the U.S. Government and
certain of its agencies and instrumentalities, be exempt from all state and
local income taxes, although subject to federal tax.  The Fund intends to
advise shareholders of the proportion of its dividends which consist of such
interest.  Shareholders are urged to consult their tax advisers regarding the
possible exclusion of such portion of their dividends for state and local
income tax purposes.

     The Fund may enter into certain options and futures contracts which will
be treated as Section 1256 contracts or straddles under the Internal Revenue
Code.  Transactions which 

                                      39

<PAGE>   72


are considered Section 1256 contracts will be considered to have been closed at
the end of the Fund's fiscal year and any gains or losses will be recognized for
tax purposes at that time.  Such gains or losses and gains or losses from the
normal closing or settlement of such transactions will be characterized as 60%
long-term capital gain or loss and 40% short-term capital gain or loss
regardless of the holding period of the instrument.  The Fund will be required
to distribute net gains on such transactions to shareholders even though it may
not have closed the transaction and received cash to pay such distribution.

     An option or future may be considered a position in a straddle for tax
purposes, in which case a loss on any position in the straddle may be subject to
deferral to the extent of unrealized gain in an offsetting position.

     In order for the Fund to continue to qualify for federal income tax
treatment as a regulated investment company, at least 90% of its gross income
for a taxable year must be derived from qualifying income (i.e., dividends,
interest, income derived from loans of securities, and gains from the sale of
securities).  Gains realized on the sale or other disposition of securities,
including options and futures contracts on securities or indices, held for less
than three months, must be limited to less than 30% of the Fund's annual gross
income.  In order to avoid realizing excessive gains on securities or
currencies held less than three months, the Fund may be required to defer the
closing out of option or futures contracts beyond the time when it would
otherwise be advantageous to do so.  It is anticipated that unrealized gains on
Section 1256 options and futures contracts, which have been open for less than
three months, as of the end of the Fund's fiscal year and which are recognized
for tax purposes, will not be considered gains on securities held less than
three months for purposes of the 30% test.


                                      40

<PAGE>   73

                            DESCRIPTION OF SHARES

     In the interest of economy and convenience, certificates representing
shares purchased are not ordinarily issued.  However, such purchases are
confirmed to the investor and credited to their accounts on the books
maintained by Firstar Trust Company (the "Agent"), Milwaukee, Wisconsin.  The
investor will have the same rights of ownership with respect to such shares as
if certificates had been issued.  Investors may receive a certificate
representing whole shares by specifically requesting one by letter to the
Agent.  If a stock certificate is requested, it will not be sent for at least
14 days.  The Directors require payment of any lost instrument bond premiums or
federal and state taxes due in connection with the replacement of certificates
and may require a fee for each new stock certificate that is issued by the Fund
not connected with the purchase of new shares.

     Shareholders have the right to vote on the election of Directors at each
meeting of shareholders at which Directors are to be elected and on other
matters as provided by law or the Articles of Incorporation or Bylaws of
Heartland.  Heartland's Bylaws do not require that meetings of shareholders be
held annually.  However, special meetings of shareholders may be called for
purposes such as electing or removing Directors, changing fundamental policies
or approving investment advisory contracts.  Shareholders of each series of a
series company, such as Heartland, vote together with each share of each series
in the company on matters affecting all series (such as election of Directors),
with each share entitled to a single vote.  On matters affecting only one series
(such as an increase in that series' investment advisory fees or a change in its
fundamental investment restrictions), only the shareholders of that series are
entitled to vote.  On matters relating to all the series but affecting the
series differently (such as a new Investment Advisory Agreement), separate votes
by series are required.
        
                                      41

<PAGE>   74


                            PORTFOLIO TRANSACTIONS

     The information in this section supplements the information in the
Prospectus under "PORTFOLIO TRANSACTIONS."

     Allocation of the portfolio brokerage transactions, including their
frequency, to various dealers is determined by Heartland Advisors, as
investment advisor, in its best judgment and in a manner deemed fair and
reasonable to shareholders.  The primary consideration is prompt and efficient
execution of orders in an effective manner at the most favorable price.
Subject to this consideration, brokers who provide supplemental investment
research, statistical or other services to Heartland Advisors may receive
orders for transactions by the Fund.  Information so received will enable
Heartland Advisors to supplement its own research and analysis with the views
and information of other securities firms, and may be used for the benefit of
clients of Heartland Advisors other than the Fund.  Research services may
include advice as to the value of securities; the advisability of investing in,
purchasing or selling securities; the availability of securities or purchasers
or sellers of securities; furnishing analyses and reports concerning issues,
industries, securities, economic factors and trends, portfolio strategy and
performance of accounts; and effecting securities transactions and performing
functions incidental thereto (such as clearance and settlement). Some
broker-dealers may indicate that the provision of research services is
dependent upon the generation of certain specified levels of commissions by
Heartland Advisors' clients. In addition, some broker-dealers may supply
research from third party service providers in consideration of their receipt
of brokerage commissions from transactions allocated by Heartland Advisors. The
Fund may also consider sales of its own shares or the shares of the other
Heartland funds, or both, as a factor in the selection of broker-dealers to
execute portfolio transactions, subject to the policy of obtaining best price
and execution.

     For particular transactions, the Fund may pay higher commissions to
brokers (other than to Heartland Advisors or its affiliates) than might be
charged if a different broker had been selected, if, in Heartland Advisors'
opinion, this policy furthers the objective of obtaining best price and
execution.

                                      42

<PAGE>   75


The allocation of orders among brokers and the commission rates paid will 
be reviewed periodically by Heartland's Board of Directors.

     Subject to the above considerations, Heartland Advisors may itself
occasionally effect portfolio transactions as a broker for the Fund.  The
commissions, fees or other remuneration received by Heartland Advisors must be
reasonable and fair compared to the commissions, fees or other remuneration
paid to other brokers in connection with comparable transactions involving
similar securities being purchased or sold on a securities exchange or on the
National Association of Securities Dealers Automated Quotation System during a
comparable period of time.  This standard would allow Heartland Advisors to
receive no more than the remuneration which would be expected to be received by
an unaffiliated broker in a commensurate arms' length transaction.
Furthermore, the Board of Directors of Heartland, including a majority of the
directors who are not interested persons, have adopted procedures which are
reasonably designed to provide that any commissions, fees or other remuneration
paid to Heartland Advisors are consistent with the foregoing standard.
Brokerage transactions with Heartland Advisors are also subject to such
fiduciary standards as may be imposed upon Heartland Advisors by applicable
law.

   
     For the fiscal years ended December 31, 1996, 1995 and 1994, the Wisconsin
Fund paid $31,509, $1,968 and $70, respectively, in brokerage commissions. Of
such commissions, amounts paid to Heartland Advisors as broker by the Fund were
$0, $0 and $70, respectively.
    


              CUSTODIAN AND TRANSFER AND DIVIDEND DISBURSING AGENT

     Firstar Trust Company acts as Custodian of the Fund's investments and acts
as Transfer and Dividend Disbursing Agent.  Its address is Firstar Trust
Company, Mutual Funds Services, 3rd Floor, P.O. Box 701, Milwaukee, Wisconsin
53201-0701.

                                      43

<PAGE>   76

                  COUNSEL AND INDEPENDENT PUBLIC ACCOUNTANTS

   
     Quarles & Brady serves as legal counsel for the Fund.  Arthur Andersen
LLP, independent public accountants, served as auditors of the Fund through
calendar year 1996.  Price Waterhouse LLP has been selected as independent
public accountants for the Fund beginning with fiscal year 1997.
    

                             FINANCIAL STATEMENTS

   
     The financial statements and related report of Arthur Andersen LLP,
independent public accountants, contained in the Annual Report to Shareholders
of the Fund for the fiscal year ended December 31, 1996 are hereby incorporated
by reference.  Copies of the Annual Report may be obtained without charge by
writing to Heartland Advisors, Inc., 790 North Milwaukee Street, Milwaukee,
Wisconsin 53202, or by calling 1-800-432-7856 or (414) 289-7000.
    


                                      44

<PAGE>   77


                                   APPENDIX A

                               SECURITIES RATINGS



GENERAL

     A rating of a rating service represents the service's opinion as to the
credit quality of the security being rated.  However, the ratings are general
and are not absolute standards as to the creditworthiness of an issuer.
Consequently, Heartland Advisors believes that the quality of debt securities
in which the Funds invest should be continuously reviewed and that individual
analysts give different weightings to the various factors involved in credit
analysis.  A rating is not a recommendation to purchase, sell or hold a
security, because it does not take into account market value or suitability for
a particular investor.  When a security has received a rating from more than
one service, each rating should be evaluated independently.  Ratings are based
on current information furnished by the issuer or obtained by the rating
services from other sources which they consider reliable.  Ratings may be
changed,  suspended or withdrawn as a result of changes in or unavailability of
such information, or for other reasons.

     The following is a description of the characteristics of ratings used by
Moody's Investors Service, Inc., Standard & Poor's Corporation and Fitch
Investors Service, Inc.

CORPORATE AND MUNICIPAL BOND RATINGS

     RATINGS BY MOODY'S

     Aaa -- Bonds which are rated in category Aaa are judged to be of the best
quality and carry the smallest degree of investment risk.  Interest payments
are protected by a large or by an exceptionally stable margin, and principal is
secure.  While the various protective elements are likely to change, such
changes as can be visualized are most unlikely to impair the fundamentally
strong position of such issues.


                                     A-1

<PAGE>   78


     Aa -- Bonds which are rated in category Aa are judged to be of high
quality by all standards.  Together with the Aaa group they comprise what are
generally known as high grade bonds.  They are rated lower than the best bonds
because margins of protection may not be as large as in Aaa securities or
fluctuation of protective elements may be of greater amplitude or there may be
other elements present which make the long term risks appear somewhat larger
than in Aaa securities.

     A -- Bonds which are rated in category A are judged to possess many
favorable investment attributes and are to be considered as upper medium grade
obligations.  Factors giving security to principal and interest are considered
adequate, but elements may be present which suggest a susceptibility to
impairment sometime in the future.

     Baa -- Bonds rated in category Baa are considered medium grade
obligations, i.e., they are neither highly protected nor poorly secured.
Interest payments and principal security appear adequate for the present but
certain protective elements may be lacking or may be characteristically
unreliable over any great length of time.  Such bonds lack outstanding
investment characteristics and in fact may have speculative characteristics as
well.

     Ba -- Bonds which are rated Ba are judged to have speculative elements;
their futures cannot be considered as well assured.  Often the protection of
interest and principal payments may be very moderate and thereby not well
safeguarded during other good and bad times over the future.  Uncertainty of
position characterizes bonds in this class.

     B -- Bonds which are rated B generally lack characteristics of the
desirable investment.  Assurance of interest and principal payments or of
maintenance of other terms of contract over any long period of time may be
small.

     Moody's applies numerical modifiers "1", "2" and "3" to the Aa through B
rating classifications.  The modifier "1" indicates that the security ranks in
the higher end of its generic rating category; the modifier "2" indicates a
mid-range ranking; and the modifier "3" indicates that the issue ranks in the
lower end of its generic rating category.

                                     A-2

<PAGE>   79

     RATINGS BY STANDARD & POOR'S

     AAA -- This is the highest rating category assigned by Standard & Poor's
to a debt obligation and indicates an extremely strong capacity to pay
principal and interest.

     AA -- Debt rated AA has a very strong capacity to pay principal and
interest and differs from AAA issues only in small degree.

     A -- Debt rated A has a strong capacity to pay principal and interest,
although it is somewhat more susceptible to the adverse effects of changes in
circumstances and economic conditions than debt in higher rated categories.

     BBB -- Debt rated BBB is regarded as having an adequate capacity to pay
principal and interest.  Whereas it normally exhibits adequate protection
parameters, adverse economic conditions or changing circumstances are more
likely to lead to a weakened capacity to pay principal and interest for debt in
this category than for bonds in higher rated categories.

     BB -- Debt rated BB has less near-term vulnerability to default than other
speculative issues.  However, it faces major ongoing uncertainties or exposure
to adverse business, financial or economic conditions which could lead to
inadequate capacity to meet timely interest and principal payments.  The BB
rating category is also used for debt subordinated to senior debt that is
assigned an actual or implied BBB rating.

     B -- Debt rated B has a greater vulnerability to default but currently has
the capacity to meet interest payments and principal repayments.  Adverse
business, financial or economic conditions will likely impair capacity or
willingness to pay interest and repay principal.  The B rating category is also
used for debt subordinated to senior debt that is assigned an actual or implied
BB or BB- rating.

     Standard & Poor's ratings, other than AAA, may be modified by the addition
of a plus or minus sign to show relative standing in the major categories.

                                     A-3

<PAGE>   80

     RATINGS BY FITCH

     AAA -- Bonds considered to be investment grade and of the highest credit
quality.  The obligor has an exceptionally strong ability to pay interest and
repay principal, which is unlikely to be affected by reasonably foreseeable
events.

     AA -- Bonds considered to be investment grade and of very high credit
quality.  The obligor's ability to pay interest and repay principal is very
strong, although not quite as strong as bonds rated AAA.  Because bonds rated
in the AAA and AA categories are not significantly vulnerable to foreseeable
future developments, short-term debt of these issuers is generally rated F-1+.

     A -- Bonds considered to be investment grade and of high credit quality.
The obligor's ability to pay interest and repay principal is considered to be
strong, but may be more vulnerable to adverse changes in economic conditions
and circumstances than bonds with higher ratings.

     BBB -- Bonds considered to be investment grade and of satisfactory credit
quality.  The obligor's ability to pay interest and repay principal is
considered to be adequate.  Adverse changes in economic conditions and
circumstances, however, are more likely to have adverse impact on these bonds
and therefore impair timely payment.  The likelihood that the ratings of these
bonds will fall below investment grade is higher than for bonds with higher
ratings.

     BB -- Bonds considered speculative.  The obligor's ability to pay interest
and repay principal may be affected over time by adverse economic changes.
However, business and financial alternatives can be identified which could
assist the obligor in satisfying its debt service requirements.

     B -- Bonds are considered highly speculative.  While bonds in this class
are currently meeting debt service requirements, the probability of continued
timely payment of principal and interest reflects the obligor's limited margin
of safety and the need for reasonable business and economic activity throughout
the life of the issue.

                                     A-4

<PAGE>   81

     Fitch applies modifiers "Plus(+)" or "Minus(-)" to the AA, A, BBB, BB and
B rating classifications.  These modifiers are used to indicate the relative
position of a credit within a rating category.

MUNICIPAL NOTE RATINGS

     RATINGS BY MOODY'S

     MIG 1.  This designation category denotes best quality.  There is present
strong protection by established cash flows, superior liquidity support or
demonstrated broad-based access to the market for refinancing.

     MIG 2.  This designation category denotes high quality.  Margins of
protection are ample although not so large as in the preceding group.

     MIG 3.  This designation category denotes favorable quality.  All security
elements are accounted for but there is lacking the undeniable strength of the
preceding grades.  Liquidity and cash flow protection may be narrow and market
access for refinancing is likely to be less well established.

     RATINGS BY S & P

     SP-1.  Notes rated SP-1 have very strong or strong capacity to pay
principal and interest.  Those issues determined to possess overwhelming safety
characteristics are designated as SP-1+.

     SP-2.  Notes rated SP-2 have satisfactory capacity to pay principal and
interest.

     Notes due in three years or less normally receive a note rating.  Notes
maturing beyond three years normally receive a bond rating, although the
following criteria are used in making that assessment.

     -Amortization schedule (the larger the final maturity relative to other
maturities, the more likely the issue will be rated as a note.)

                                     A-5

<PAGE>   82

     -Source of payment (the more dependent the issue is on the market for its
refinancing, the more likely it will be rated as a note.)

     RATINGS BY FITCH

     Fitch short-term ratings apply to debt obligations that are payable on
demand or have original maturities of generally up to three years, including
commercial paper, certificates of deposit, medium-term notes, and municipal and
investment notes.

     F-1+ Exceptionally Strong Credit Quality.  Issues assigned this rating are
regarded as having the strongest degree of assurance for timely payment.

     F-1 Very Strong Credit Quality.  Issues assigned this rating reflect an
assurance of timely payment only slightly less in degree than issues rated
"F-1+."

     F-2 Good Credit Quality.  Issues assigned this rating have a satisfactory
degree of assurance for timely payment, but the margin of safety is not as
great as for issues assigned "F-1+" and "F-1" ratings.

     F-3 Fair Credit Quality.  Issues assigned this rating have characteristics
suggesting that the degree of assurance for timely payment is adequate;
however, near-term adverse changes could cause these securities to be rated
below investment grade.

     Fitch also uses the symbol "LOC" which indicates that the rating is based
on a letter of credit issued by a commercial bank.

                                     A-6

<PAGE>   83

                               TABLE OF CONTENTS


   
                                                                  Page
                                                                  ----

Introduction to the Heartland Funds                                 2           
Investment Objective and Policies                                   2           
Investment Restrictions                                            26           
Management                                                         28           
Control Persons and Principal Holders of Securities                31           
The Investment Advisor                                             31           
Performance Information                                            34           
Determination of Net Asset Value per Share                         37           
Distribution of Shares                                             38           
Tax Status                                                         39           
Description of Shares                                              41           
Portfolio Transactions                                             42           
Custodian and Transfer and Dividend Disbursing Agent               43           
Counsel and Independent Public Accountants                         44           
Financial Statements                                               44           
    


                                      A-7



<PAGE>   84




HEARTLAND WISCONSIN TAX FREE FUND
790 North Milwaukee Street
Milwaukee, Wisconsin  53202


Investment Advisor and Distributor

Heartland Advisors, Inc.
790 North Milwaukee Street
Milwaukee, Wisconsin  53202

Custodian, Transfer and Dividend Disbursing Agent

Firstar Trust Company
Mutual Funds Services, Third Floor
P.O. Box 701
Milwaukee, Wisconsin  53201-0701

Counsel

Quarles & Brady
411 East Wisconsin Avenue
Milwaukee, Wisconsin  53202

Auditor

   
Price Waterhouse LLP
100 East Wisconsin Avenue
Milwaukee, Wisconsin  53202
    



                                     A-8


<PAGE>   85
Part C.        Other Information.

Item 24.  Financial Statements and Exhibits

          (a)  Financial Statements and related footnotes for
               the Funds (except for the Short Duration High-Yield Municipal
               Fund and the High-Yield Municipal Bond Fund) included or
               incorporated by reference in Part B are:
          
               (1) Reports of Independent Public Accountants
               (2) Statement of Net Assets
               (3) Statement of Changes in Net Assets
               (4) Statement of Operations
          
          (b)  Exhibits:

               See Exhibit Index following the signature page of this
               registration statement, which index is incorporated herein by
               this reference.

Item 25.  Persons Controlled by or under Common Control with Registrant

          Not Applicable.  See "Control Persons and Principal Holders of 
          Securities" in Part B.


Item 26.  Number of Holders of Securities

          On March 31, 1997, the number of record holders of each class
          of securities of the Registrant was: 



<TABLE>
<CAPTION>
                                                          NUMBER OF HOLDERS OF 
           FUND                                          RECORD OF COMMON STOCK
- -------------------------                                ---------------------- 
<S>                                                      <C>
Heartland Small Cap Contrarian Fund                              17,410
                                                          
Heartland Value Fund                                             68,326
                                                          
Heartland Mid Cap Value Fund                                        974
                                                          
Heartland Large Cap Value Fund                                      443
                                                          
Heartland Value Plus Fund                                         5,749
                                                          
Heartland U.S. Government Securities Fund                         2,657
</TABLE>







<PAGE>   86


<TABLE>
<S>                                                      <C>
Heartland Wisconsin Tax Free Fund                                 3,492
                                                                  
Heartland Short Duration High-Yield Municipal Fund                  229
                                                                  
Heartland High-Yield Municipal Bond Fund                            133
</TABLE>


Item 27. Indemnification
        Reference is made to Article IX of the Registrant's Bylaws filed as
Exhibit No. 2 to Registrant's Registration Statement with respect to the
indemnification of Registrant's directors and officers, which is set forth
below:

          Section 9.1.  Indemnification of Officers, Directors, Employees and
          Agents.  The Corporation shall indemnify each person who was or is
          a party or is threatened to be made a party to any threatened,
          pending or completed action, suit or proceeding, whether civil,
          criminal, administrative or investigative ("Proceeding"), by reason
          of the fact that he is or was a Director, officer, employee or
          agent of the Corporation, or is or was serving at the request of
          the Corporation as a Director, officer, employee or agent of
          another corporation, partnership, joint venture, trust or other
          enterprise, against all expenses (including attorneys' fees),
          judgments, fines and amounts paid in settlement actually and
          reasonably incurred by him in connection with such Proceeding to
          the fullest extent permitted by law; provided that:

                  (a)  whether or not there is an adjudication of liability 
                       in such Proceeding, the Corporation shall not indemnify
                       any person for any liability arising by reason of such
                       person's willful misfeasance, bad faith, gross
                       negligence, or reckless disregard of the duties involved
                       in the conduct of his office or under any contract or
                       agreement with the Corporation ("disabling conduct"); and

                  (b)  the Corporation shall not indemnify any person unless:

                        (1) the court or other body before which the Proceeding
                        was brought (i) dismisses the Proceeding for
                        insufficiency of evidence of any disabling conduct, or
                        (ii) reaches a final decision on the merits that such
                        person was not liable by reason of disabling conduct;
                        or

                        (2) absent such a decision, a reasonable determination
                        is made, based upon a review of the facts, by (i) the
                        vote of a majority of a quorum of the Directors of the
                        Corporation who are neither interested persons of the
                        Corporation as defined in the Investment Company Act of
                        1940 nor parties to the Pro-

                                     C-2




<PAGE>   87

                        ceeding, or (ii) if such quorum is not obtainable, or
                        even if obtainable, if a majority of a quorum of
                        Directors described in paragraph (b)(2)(i) above so
                        directs, by independent legal counsel in a written
                        opinion, that such person was not liable by reason of
                        disabling conduct.

                        Expenses (including attorneys' fees) incurred in
                        defending a Proceeding will be paid by the Corporation
                        in advance of the final disposition thereof upon an
                        undertaking by such person to repay such expenses
                        (unless it is ultimately determined that he is entitled
                        to indemnification),

                              (1) such person shall provide adequate security
                              for his undertaking;

                              (2) the Corporation shall be insured against
                              losses arising by reason of such advance; or

                              (3) a majority of a quorum of the Directors of
                              the Corporation who are neither interested
                              persons of the Corporation as defined in the
                              Investment Company Act of 1940 nor parties to the
                              Proceeding, or independent legal counsel in a
                              written opinion, shall determine, based on a
                              review of readily available facts, that there is
                              reason to believe that such person will be found
                              to be entitled to indemnification.



          Section 9.2. Insurance of Officers, Directors, Employees and Agents.
          The Corporation may purchase and maintain insurance on behalf of
          any person who is or was a Director, officer, employee or agent of the
          Corproation, or is or ws serving at the request of the Corporation as
          a Director, officer, employee or agent of another corporation,
          partnership, joint venture, trust or other enteprise against any
          liability asserted against him and incurred by him in or arising of
          his position. However, in no event will the Corporation purchase
          insurance to indemnify any such person for any act for which the
          Corporation itself is not permitted to indemnify him.

In addition, the Registrant maintains an Investment Advisor/Mutual Fund
Professional Liability insurance policy with a $10 million limit of liability
under which the Registrant and its affiliate, Heartland Advisors, Inc., and
each of their respective directors and officers are named insureds.

Registrant undertakes that insofar as indemnification for liabilities
arising under the Securities Act of 1933 may be permitted to directors,
officers and controlling persons of the Registrant pursuant to the foregoing
provisions, or otherwise, Registrant has been advised that in the


                                     C-3




<PAGE>   88
opinion of the Securities and Exchange Commission such indemnification
is against public policy as expressed in the Act and is, therefore,
unenforceable.  In the event that a claim for indemnification against such
liabilities (other than the payment by the registrant of expenses incurred or
paid by a director, officer or controlling person of the Registrant in the
successful defense of any action, suit or proceeding) is asserted by such
director, officer or controlling person in connection with the securities being
registered, the Registrant will, unless in the opinion of its counsel the
matter has been settled by controlling precedent, submit to a court of
appropriate jurisdiction the question whether such indemnification by it is
against public policy as expressed in the Act and will be governed by the final
adjudication of such issue. 


Item 28. Business and Other Connections of Investment Advisor

         (a) Heartland Advisors, Inc.

         Heartland Advisors, Inc. acts as the Investment Advisor and
         Distributor to each of the Heartland Funds. William J. Nasgovitz, a
         director and President of Heartland Group, Inc., is a controlling
         person of Heartland Advisors through his ownership of a majority of
         its voting common stock.  Mr. Nasgovitz has indicated he intends to
         retain control of the Advisor through continued ownership of a
         majority of its outstanding voting stock.
         
         Set forth below is a list of the executive officers and directors
         of Heartland Advisors, Inc. as of March 31, 1997, together with
         information as to any other business, profession, vocation or
         employment of a substantial nature of those officers and directors
         during the past two years:



<TABLE>
<CAPTION>
                              POSITION WITH
NAME                     HEARTLAND ADVISORS, INC.                  OTHER
- ----                  ------------------------------  --------------------------------
<S>                   <C>                             <C>
William J. Nasgovitz  President and Director          President and Director,
                                                      Heartland Group, Inc.

Patrick J. Retzer     Director and Senior Vice        Vice President, Treasurer, and
                      President, Treasurer            Director, Heartland Group, Inc.

Kevin D. Clark        Senior Vice President, Trading

Mitchell L. Kohls     Chief Operating Officer         Communications Manager, GE
                                                      Medical Systems (General
                                                      Electric) (8/88 to 6/95)

Kenneth J. Della      Chief Financial Officer         None

Lorraine J. Koeper    Senior Vice President and       Attorney, Quarles & Brady (9/92
                      General Counsel and Director    to 7/95)

Lois J. Schmatzhagen  Secretary                       Secretary, Heartland Group, Inc.

Eric J. Miller        Senior Vice President           None
</TABLE>


                                     C-4




<PAGE>   89

Item 29.  Principal Underwriters

            (a)  Heartland Advisors, Inc. acts as the Distributor
                 of each of the Heartland funds shares.  Heartland Advisors,
                 Inc. does not act as the principal underwriter or distributor
                 for any open-end mutual funds other than the Heartland funds.

            (b)  See response to item 28(a) above.

            (c) Not applicable.

Item 30. Location of Accounts and Records

            (a) Heartland Group, Inc.
                790 North Milwaukee Street
                Milwaukee, Wisconsin  53202

            (b) Firstar Trust Company
                Mutual Funds Services, Third Floor
                P.O. Box 701
                Milwaukee, Wisconsin  53201-0701
 
            (c) Firstar National Bank-Milwaukee
                777 East Wisconsin Avenue
                Milwaukee, Wisconsin  53202


Item 31.  Management Services

          Not applicable

Item 32.  Undertakings

          The Registrant hereby undertakes to furnish each person to whom a
          prospectus is delivered a copy of the Registrant's latest annual
          report to shareholders, upon request and without charge.



                                     C-5




<PAGE>   90


                                   SIGNATURES

     Pursuant to the requirements of the Securities Act of 1933 and the
Investment Company Act of 1940, the Registrant certifies that it meets all of
the requirements for effectiveness of this Amendment to its Registration
Statement pursuant to Rule 485(b) under the Securities Act of 1933 and has duly
caused this Amendment to its Registration Statement to be signed on its behalf
by the undersigned, thereto duly authorized, in the City of Milwaukee, and
State of Wisconsin, on the 28th day of April, 1997.

                                      HEARTLAND GROUP, INC.
                   

                                      By:  /s/ William J. Nasgovitz
                                           -----------------------------
                                           WILLIAM J. NASGOVITZ
                                           President and Chief Executive Officer


     Pursuant to the requirements of the Securities Act of 1933, this Amendment
to the Registration Statement has been signed on this 28th day of April, 1997,
by or on behalf of the following persons in the capacities indicated.


SIGNATURE                 TITLE

/s/ William J. Nasgovitz
- ------------------------  Director and President (Chief Executive Officer)
WILLIAM J. NASGOVITZ

/s/ Patrick J. Retzer
- ------------------------  Director, Vice President and Treasurer (Chief
PATRICK J. RETZER         Financial and Accounting Officer)

Hugh F. Denison *         
- ------------------------  Director
HUGH F. DENISON

A. Gary Shilling *
- ------------------------  Director
A. GARY SHILLING

Willard H. Davidson *
- ------------------------  Director
WILLARD H. DAVIDSON

Jon D. Hammes *
- ------------------------  Director
JON D. HAMMES

Linda F. Stephenson *
- ------------------------  Director
LINDA F. STEPHENSON


* By:  /s/ William J. Nasgovitz
       --------------------------------------------------
       WILLIAM J. NASGOVITZ
       Pursuant to Power of Attorney dated April 27, 1995

                                     C-6




<PAGE>   91


                                 EXHIBIT INDEX


EXHIBIT                                                                 NUMBERED
NUMBER   DESCRIPTION                                                      PAGE
- -------  -----------                                                    --------


1(a)     Articles of Incorporation*

 (b)     Form of Articles Supplementary to Articles of Incorporation  
         filed with Maryland Department of Assessments and Taxation to 
         withdraw the designation of, and to discontinue, the series 
         known as the Heartland Nebraska Tax Free Fund*


2        Amended and Restated By-Laws*

5(a)     Investment Advisory Agreement for Heartland Value Fund*


5(b)     Investment Advisory Agreement for Heartland U.S. Government, 
         Wisconsin Tax Free, Value Plus, Small Cap Contrarian, Mid Cap 
         Value and Large Cap Value Funds*

5(c)     Amended Schedule A to Investment Advisory Agreement adding 
         Heartland Short Duration High-Yield Municipal and Heartland 
         High-Yield Municipal Bond Funds*

6(a)(i)  Distribution Agreement between Heartland Group, Inc.
         and Heartland Advisors, Inc.*

 (a)(ii) Amendment No. 1 to Distribution Agreement between Heartland 
         Group, Inc. and Heartland Advisors, Inc.*

 (b)     Form of Selected Dealer Agreements*

 (c)     Form of Selling Agreement for Banks*

8(a)     Custodian Agreement*

 (b)     Transfer Agent/Dividend Disbursing Agent Agreement*

9(a)     Heartland Group, Inc.'s Rule 10f-3 Plan*

 (b)     Heartland Value Fund, Inc.'s Rule 10f-3 Plan*

10       Opinion of Quarles & Brady*


                                     C-7




<PAGE>   92
EXHIBIT                                                                 NUMBERED
NUMBER   DESCRIPTION                                                      PAGE
- -------  -----------                                                    --------

11(a)    Consent of Arthur Andersen LLP

  (b)    Consent of Quarles & Brady*

13       Subscription Agreements*

14(a)    Form of Model Retirement Plans*


  (b)    Form of Heartland Funds Individual Retirement Account Agreement 
         and Forms*

  (c)    Form of Heartland Funds Section 403(b)(7) Custodial Account 
         Agreement and Forms*

  (d)    Form of Heartland Funds SIMPLE IRA Attachment to IRS
         Form 5305-SA*

15(a)    The Value Fund's Rule 12b-1 Plan*

  (b)    Heartland Group Inc.'s Amended and Restated Rule 12b-1 Plan*

  (c)    Form of Related Distribution Agreement for Rule 12b-1 Plan*

16(a)    Schedules for Computation of Performance Information for the 
         Heartland Value Fund and the Heartland U.S. Government Fund*

  (b)    Schedules for Computation of Performance Information for the 
         Heartland Wisconsin Tax Free Fund*

  (c)    Schedules for Computation of Performance Information for the 
         Heartland Value Plus Fund*

  (d)    Schedules for Computation Performance Information for the 
         Heartland Small Cap Contrarian Fund*

17       Financial Data Schedules (See Exhibit 27)

27       Financial Data Schedules

  __________________
* Previously filed and incorporated herein by reference.


                                      C-8

<PAGE>   1
                                                                  EXHIBIT  11(a)




                   CONSENT OF INDEPENDENT PUBLIC ACCOUNTANTS

As independent public accountants, we hereby consent to the incorporation in
this Registration Statement of our report, dated February 7, 1997, on the
financial statements and related notes of Heartland Wisconsin Tax Free Fund
appearing in the Fund's December 31, 1996 Annual Report to Shareholders, and to
all references to our Firm included in or made a part of Post-Effective
Amendment No. 31 to Heartland Group, Inc.'s Registration Statement on Form
N-1A.


                                                ARTHUR ANDERSEN   LLP


Milwaukee, Wisconsin
April 24, 1997



<TABLE> <S> <C>

<ARTICLE> 6
<LEGEND>
THIS SCHEDULE CONTAINS SUMMARY FINANCIAL INFORMATION EXTRACTED FROM THE ANNUAL
REPORT TO SHAREHOLDERS FOR THE PERIOD ENDED DECEMBER 31, 1996 AND IS QUALIFIED
IN ITS ENTIRETY BY REFERENCE TO SUCH REPORT.
</LEGEND>
<SERIES>
   <NUMBER> 003
   <NAME> HEARTLAND WISCONSIN TAX FREE FUND
       
<S>                             <C>
<PERIOD-TYPE>                   YEAR
<FISCAL-YEAR-END>                          DEC-31-1996
<PERIOD-START>                             JAN-01-1996
<PERIOD-END>                               DEC-31-1996
<INVESTMENTS-AT-COST>                      121,953,207
<INVESTMENTS-AT-VALUE>                     123,483,925
<RECEIVABLES>                                1,610,771
<ASSETS-OTHER>                                   1,517
<OTHER-ITEMS-ASSETS>                                 0
<TOTAL-ASSETS>                             125,096,213
<PAYABLE-FOR-SECURITIES>                             0
<SENIOR-LONG-TERM-DEBT>                              0
<OTHER-ITEMS-LIABILITIES>                      551,450
<TOTAL-LIABILITIES>                            551,450
<SENIOR-EQUITY>                                      0
<PAID-IN-CAPITAL-COMMON>                   123,548,723
<SHARES-COMMON-STOCK>                       12,257,701
<SHARES-COMMON-PRIOR>                       11,504,660
<ACCUMULATED-NII-CURRENT>                            0
<OVERDISTRIBUTION-NII>                               0
<ACCUMULATED-NET-GAINS>                      (534,678)
<OVERDISTRIBUTION-GAINS>                             0
<ACCUM-APPREC-OR-DEPREC>                     1,530,718
<NET-ASSETS>                               124,544,763
<DIVIDEND-INCOME>                                    0
<INTEREST-INCOME>                            7,163,550
<OTHER-INCOME>                                       0
<EXPENSES-NET>                                 964,477
<NET-INVESTMENT-INCOME>                      6,199,073
<REALIZED-GAINS-CURRENT>                       370,748
<APPREC-INCREASE-CURRENT>                  (1,867,241)
<NET-CHANGE-FROM-OPS>                        4,702,580
<EQUALIZATION>                                       0
<DISTRIBUTIONS-OF-INCOME>                    6,199,073
<DISTRIBUTIONS-OF-GAINS>                             0
<DISTRIBUTIONS-OTHER>                                0
<NUMBER-OF-SHARES-SOLD>                      2,158,376
<NUMBER-OF-SHARES-REDEEMED>                  1,840,299
<SHARES-REINVESTED>                            434,964
<NET-CHANGE-IN-ASSETS>                       6,031,643
<ACCUMULATED-NII-PRIOR>                              0
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