PIPER FUNDS INC
497, 1996-05-17
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<PAGE>
- -
 
                                                        [LOGO]
 
                                                 HERCULES FUNDS INC.
                                                 HERCULES NORTH AMERICAN GROWTH
                                                 AND INCOME FUND
                                                 222 SOUTH NINTH STREET
                                                 MINNEAPOLIS, MINNESOTA
                                                 55402-3804
 
May 17, 1996
 
Dear Shareholder:
 
A special meeting of shareholders of Hercules North American Growth and Income
Fund (the "Fund") will be held at the offices of Hercules Funds Inc. on June 18,
1996 at 10 a.m. central time at 222 South Ninth Street, 3rd floor, Minneapolis,
Minnesota.
 
This meeting has been called to seek shareholder approval to combine the assets
of the Fund with assets of Growth and Income Fund, a series of Piper Funds Inc.
If approved, Fund shareholders would become shareholders of Growth and Income
Fund and would receive shares with a value equal to the value of their Fund
shares.
 
This reorganization is part of a larger proposal to eliminate Hercules as a
separate family of funds, as we believe the funds are unlikely to grow to a size
which is economically viable. If you are a shareholder in more than one Hercules
fund, you will receive separate mailings of proxy materials for each fund.
PLEASE RETURN A COMPLETED PROXY CARD FOR EACH FUND IN WHICH YOU ARE INVESTED.
 
We urge you to read all of the enclosed materials carefully but direct your
attention to the following important points:
 
    - The Board of Directors of the Company has unanimously approved the
      reorganization and recommends that you vote FOR the reorganization.
 
    - Shareholders will not incur any commissions, sales loads or other charges
      in connection with the reorganization and Piper Capital, the investment
      manager for both funds, has agreed to pay for all direct expenses
      including the proxy solicitation.
 
    - The expense ratio for Growth and Income Fund is lower than the Fund's
      expense ratio. While waivers and reimbursements currently keep the Fund's
      expense ratio artificially low, Piper Capital and the Fund's distributor
      do not presently intend to continue waiving expenses for the Fund after
      June 30, 1996.
 
    - The reorganization would enable Fund shareholders to enjoy an expanded
      range of mutual fund investment options, including 16 other open-end Piper
      Funds. Shareholders who receive Growth and Income Fund shares in the
      reorganization would have exchange privileges within the Piper family of
      funds.
 
    - The reorganization will not result in any federal taxable income to the
      Fund or its shareholders.
 
PLEASE MARK, SIGN, DATE AND RETURN THE ENCLOSED PROXY CARD AS SOON AS POSSIBLE,
AS YOUR PROMPT RESPONSE WILL ELIMINATE THE NEED FOR ADDITIONAL MAILINGS. A
postage-paid envelope is enclosed with each proxy mailing for your convenience.
As the meeting date approaches, if you haven't voted you may receive a telephone
call reminding you to vote.
<PAGE>
The enclosed QUESTION AND ANSWER sheet provides more detailed information about
the proposal. Also enclosed are the formal Notice of Special Meeting and Proxy
Statement/Prospectus documents. If you have additional questions, please contact
your investment professional or call Piper Capital at 1 800 866-7778 and press
2.
 
Sincerely,
 
            [SIG]
 
William H. Ellis
President
<PAGE>
SHAREHOLDER Q&A
 
                                                                    MAY 17, 1996
- --------------------------------------------------------------------------------
 
ON FEBRUARY 6, 1996, PIPER CAPITAL MANAGEMENT INCORPORATED RECOMMENDED TO THE
BOARD OF DIRECTORS OF HERCULES FUNDS INC. THAT IT ELIMINATE HERCULES AS A
SEPARATE FUND FAMILY BECAUSE THE FUNDS ARE TOO SMALL TO BE ECONOMICALLY VIABLE.
THE BOARD UNANIMOUSLY AGREED THAT IT WOULD BE IN THE BEST INTEREST OF
SHAREHOLDERS TO REORGANIZE THE HERCULES EQUITY FUNDS INTO APPROPRIATE PIPER
FUNDS AND TO LIQUIDATE THE WORLD BOND FUND. THESE PROPOSALS ARE SUBJECT TO
SHAREHOLDER APPROVAL.
 
WHAT WILL HAPPEN TO THE VARIOUS HERCULES FUNDS?
 
Piper Capital is proposing the following changes:
 
    - Hercules North American Growth and Income Fund will be reorganized into
      Growth and Income Fund, a series of Piper Funds Inc.
 
    - Hercules European Value Fund and Hercules Pacific Basin Value Fund will be
      reorganized into Pacific-European Growth Fund, a series of Piper Global
      Funds Inc.
 
    - Hercules Latin American Value Fund will be reorganized into the Emerging
      Markets Growth Fund, a newly-created series of Piper Global Funds Inc.
 
    - Hercules World Bond Fund will be liquidated and net assets distributed to
      shareholders.
 
WHAT ABOUT HERCULES MONEY MARKET FUND?
 
We expect that shareholders will redeem out of Hercules Money Market Fund as a
result of Piper Capital's decision to discontinue the fund's 1% expense
limitation effective July 1, 1996.
 
WHY WERE THESE CHANGES RECOMMENDED?
 
The Hercules funds have not been able to attract sufficient assets to make them
economically viable to operate and prospects for future growth appear remote. If
the changes are approved, we believe shareholders will benefit from:
 
    - A potential increase in operating efficiencies and therefore a reduction
      in expense ratios
 
    - The potential for greater investment diversification and more flexibility
      in portfolio management because the existing corresponding Piper funds
      have a larger asset base
 
    - The advantages of ownership within a larger fund family, including
      flexibility to transfer between funds in the Piper funds complex at net
      asset value
 
WILL SHAREHOLDERS PAY A SALES CHARGE WHEN THEY MOVE INTO THE PIPER FUNDS?
 
No. Even though Hercules shareholders paid no front-end sales charges, the
maximum 4% front-end load on Piper fund shares acquired in the reorganizations
will be waived if the proposal is approved.
 
WILL THE HERCULES CONTINGENT DEFERRED SALES CHARGE (CDSC) BE WAIVED?
 
Yes. Shareholders subject to a CDSC (those who purchased shares after June 19,
1995) will not pay a CDSC if they exchange into the respective Piper fund
through the reorganization.
 
WILL SHAREHOLDERS BE ABLE TO EXCHANGE OR TRANSFER TO OTHER PIPER OPEN-END FUNDS
AT NET ASSET VALUE?
 
Yes. After Hercules fund shares are reorganized into the applicable Piper fund,
shareholders will then be able to exchange or transfer into other Piper funds at
net asset value.
 
HOW MANY OTHER PIPER OPEN-END FUNDS ARE AVAILABLE?
 
The back side of the enclosed brochure lists the 16 other funds available in
Piper's family of open-end funds.
<PAGE>
WHAT PERCENTAGE OF SHAREHOLDERS MUST VOTE "YES" FOR THE PROPOSAL TO PASS?
 
For each fund, shareholders representing a majority of the outstanding shares
must vote yes in order for the proposed reorganization or liquidation of that
fund to occur.
 
IF APPROVED, HOW WILL THE REORGANIZATIONS BE ACCOMPLISHED?
 
The reorganizations would be accomplished by combining substantially all of the
assets of each fund with the corresponding Piper fund and distributing shares of
the Piper fund with a value equal to the value of each Hercules shareholder's
fund holdings.
 
WHO WILL PAY FOR THE REORGANIZATION?
 
Piper Capital has agreed to pay all direct costs associated with the proposed
reorganizations and liquidation including the costs of proxy solicitation. No
commission, sales loads or other charges will be incurred by shareholders. Also,
we anticipate the proposed reorganizations would be completed on a tax-free
basis.
 
HOW DOES THE HERCULES NORTH AMERICAN GROWTH AND INCOME FUND COMPARE WITH THE
PIPER GROWTH AND INCOME FUND?
 
Here are a few comparisons of fund characteristics. Please review the Proxy
Statement/Prospectus for a complete comparison:
 
<TABLE>
<CAPTION>
                                HERCULES NORTH AMERICAN                PIPER
                                   GROWTH AND INCOME             GROWTH AND INCOME
<S>                           <C>                           <C>
Investment objective          Long-term capital             Current income and long-term
                              appreciation and current      growth of capital and income
                              income
Investment policies           65% minimum in U.S.,          95% minimum in U.S.
                              Canadian, & Mexican           securities
                              securities
Country allocation as of      58% U.S., 18% Canada, 24%     100% U.S.
2/29/96                       Mexico
Net assets as of 2/29/96      $8.7 million                  $83.3 million
Adviser/Subadvisers           Piper Capital/AGF Advisers,   Piper Capital
                              Acci Worldwide, Piper
                              Capital
</TABLE>
<PAGE>
                              HERCULES FUNDS INC.
                 HERCULES NORTH AMERICAN GROWTH AND INCOME FUND
                              PIPER JAFFRAY TOWER
                             222 SOUTH NINTH STREET
                       MINNEAPOLIS, MINNESOTA 55402-3804
 
                            ------------------------
 
                   NOTICE OF SPECIAL MEETING OF SHAREHOLDERS
                            TO BE HELD JUNE 18, 1996
 
                             ---------------------
 
TO THE SHAREHOLDERS OF HERCULES NORTH AMERICAN GROWTH AND INCOME FUND,
 A SERIES OF HERCULES FUNDS INC.
 
    Notice   is  hereby  given  that  a   Special  Meeting  (the  "Meeting")  of
shareholders of Hercules North American Growth and Income Fund (the "Fund"), one
of six portfolios of Hercules  Funds Inc. (the "Company"),  will be held in  the
office of the Company, 222 South Ninth Street, 3rd Floor, Minneapolis, MN 55402,
on June 18, 1996 at 10:00 a.m. central time. Piper Capital will validate parking
at  the Energy Center Ramp located at the corner of South Ninth Street and Third
Avenue South. Please bring  your parking ticket to  the Meeting for  validation.
The purposes of the Meeting are:
 
     I. To consider and vote upon an Agreement and Plan of Reorganization, dated
        as of April 15, 1996 (the "Plan"), by and between the Company, on behalf
        of  the Fund, and  Piper Funds Inc.  ("Piper"), on behalf  of Growth and
        Income Fund ("Growth and Income Fund"), pursuant to which  substantially
        all of the assets of the Fund will be acquired by Growth and Income Fund
        and  shareholders of  the Fund  will become  shareholders of  Growth and
        Income Fund receiving  shares of  Growth and  Income Fund  with a  value
        equal to the value of their holdings in the Fund. A vote in favor of the
        Plan  will be considered a vote in favor of an amendment to the articles
        of incorporation of the Company required to effect the reorganization as
        contemplated by the Plan.
 
    II. To consider and act upon such other matters as may properly come  before
        the Meeting or any adjournment thereof.
 
               YOUR DIRECTORS UNANIMOUSLY RECOMMEND THAT YOU VOTE
                        IN FAVOR OF THE ABOVE PROPOSAL.
 
    The  attached  Proxy Statement/Prospectus  describes  the above  proposal in
detail and is being sent to shareholders  of record as of the close of  business
on April 25, 1996, who are the shareholders entitled to notice of and to vote at
the Meeting. Please read the Proxy Statement/Prospectus carefully before telling
us through your proxy or in person how you wish your shares to be voted.
 
                                          By Order of the Board of Directors
 
                                          SUSAN SHARP MILEY
                                          SECRETARY
 
May 17, 1996
 
                                   IMPORTANT
 
  THE  BOARD OF DIRECTORS  URGES YOU TO  MARK, SIGN AND  RETURN THE ENCLOSED
    PROXY AS SOON  AS POSSIBLE  WHETHER OR NOT  YOU EXPECT  TO ATTEND  THE
      MEETING  IN  PERSON. THE  ENCLOSED  ADDRESSED ENVELOPE  REQUIRES NO
                 POSTAGE AND IS PROVIDED FOR YOUR CONVENIENCE.
<PAGE>
                             GROWTH AND INCOME FUND
                          A SERIES OF PIPER FUNDS INC.
                              PIPER JAFFRAY TOWER
                             222 SOUTH NINTH STREET
                       MINNEAPOLIS, MINNESOTA 55402-3804
                           (800) 866-7778 (TOLL FREE)
 
                            ------------------------
 
  ACQUISITION OF THE ASSETS OF HERCULES NORTH AMERICAN GROWTH AND INCOME FUND
                        A SERIES OF HERCULES FUNDS INC.
 
            BY AND IN EXCHANGE FOR SHARES OF GROWTH AND INCOME FUND
                          A SERIES OF PIPER FUNDS INC.
 
                            ------------------------
 
    This Proxy  Statement/Prospectus  is  being  furnished  to  shareholders  of
Hercules  North  American  Growth and  Income  Fund  (the "Fund"),  a  series of
Hercules Funds Inc. (the "Company"), in connection with an Agreement and Plan of
Reorganization dated  as  of April  15,  1996  (the "Plan")  pursuant  to  which
substantially  all of  the assets  of the  Fund will  be combined  with those of
Growth and Income Fund ("Growth and Income Fund"), a series of Piper Funds  Inc.
("Piper"), in exchange for shares of Growth and Income Fund. As a result of this
transaction,  shareholders of  the Fund will  become shareholders  of Growth and
Income Fund and will receive shares of Growth and Income Fund with a value equal
to the value of their  holdings in the Fund as  of the date of the  transaction.
The  terms and conditions of  this transaction are more  fully described in this
Proxy Statement/Prospectus and in the Plan, attached hereto as EXHIBIT A.
 
    Growth and  Income  Fund is  a  diversified  series of  Piper,  an  open-end
diversified  management investment company the shares of which can be offered in
more than one series.  The investment objectives of  Growth and Income Fund  are
current  income and  long-term growth of  capital and income.  Growth and Income
Fund seeks to achieve its investment objectives by investing primarily in common
stock of U.S. companies  and securities convertible into  such common stock  and
also  in U.S.  Government securities  and U.S.  investment grade  corporate debt
securities.
 
    This Proxy  Statement/Prospectus  sets  forth  concisely  information  about
Growth  and Income Fund that shareholders of  the Fund should know before voting
on the Plan. This  Proxy Statement also constitutes  a Prospectus of Growth  and
Income Fund filed with the Securities and Exchange Commission (the "Commission")
as part of its Registration Statement on Form N-14. A copy of the Prospectus for
Growth  and  Income Fund  dated November  27,  1995, is  attached to  this Proxy
Statement/Prospectus and is incorporated herein by reference. Also enclosed  and
incorporated  by reference is the Annual Report  for Piper -- Total Return Funds
for Growth and Income Fund's fiscal  year ended September 30, 1995. A  Statement
of Additional Information relating to the reorganization described in this Proxy
Statement/Prospectus  (the "Additional Statement")  dated May 2,  1996, has been
filed with the  Commission and is  also incorporated herein  by reference.  Also
incorporated  herein by reference are the  Company's Prospectus dated August 29,
1995, the Company's Annual Report  for its fiscal year  ended June 30, 1995  and
the  Company's Semi-Annual  Report for the  six months ended  December 31, 1995.
Such  documents  are  available  without  charge,  as  noted  under   "Available
Information" below.
 
    INVESTORS ARE ADVISED TO READ AND RETAIN THIS PROXY STATEMENT/PROSPECTUS FOR
FUTURE REFERENCE.
 
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 ON  THE ACCURACY  OR ADEQUACY  OF  THIS PROSPECTUS.       ANY
             REPRESENTATION TO THE CONTRARY IS A CRIMINAL OFFENSE.
<PAGE>
                               TABLE OF CONTENTS
                           PROXY STATEMENT/PROSPECTUS
 
<TABLE>
<CAPTION>
                                                                                                                PAGE
                                                                                                                -----
<S>                                                                                                          <C>
INTRODUCTION...............................................................................................           1
  General..................................................................................................           1
  Record Date; Share Information...........................................................................           1
  Proxies..................................................................................................           2
  Expenses of Solicitation.................................................................................           2
  Vote Required............................................................................................           3
SYNOPSIS...................................................................................................           3
  The Reorganization.......................................................................................           3
  Fee Table................................................................................................           3
  Tax Consequences of the Reorganization...................................................................           5
  Dissenting Shareholders' Rights of Appraisal.............................................................           5
  Comparison of the Fund and Growth and Income Fund........................................................           5
PRINCIPAL RISK FACTORS.....................................................................................           8
THE REORGANIZATION.........................................................................................           8
  Background...............................................................................................           8
  The Board's Consideration................................................................................           9
  The Plan.................................................................................................          11
  Tax Aspects of the Reorganization........................................................................          12
  Dissenters' Rights.......................................................................................          14
  Description of Shares....................................................................................          14
  Capitalization Table (unaudited).........................................................................          14
COMPARISON OF INVESTMENT OBJECTIVES, POLICIES AND RESTRICTIONS.............................................          14
  Investment Objectives and Policies.......................................................................          14
  Investment Restrictions..................................................................................          16
  Interest of Certain Persons..............................................................................          17
ADDITIONAL INFORMATION ABOUT THE FUND AND GROWTH AND INCOME FUND...........................................          17
  General..................................................................................................          17
  Financial Information....................................................................................          17
  Management...............................................................................................          17
  Description of Securities and Shareholder Inquiries......................................................          17
  Dividends, Distributions and Taxes.......................................................................          17
  Purchases and Redemptions................................................................................          17
  Pending Legal Proceedings................................................................................          17
MANAGEMENT'S DISCUSSION OF FUND PERFORMANCE................................................................          17
FINANCIAL STATEMENTS AND EXPERTS...........................................................................          18
LEGAL MATTERS..............................................................................................          18
AVAILABLE INFORMATION......................................................................................          18
OTHER BUSINESS.............................................................................................          18
EXHIBIT A -- Agreement and Plan of Reorganization, dated as of April 15, 1996 by and between the Company,
             on behalf of the Fund, and Piper, on behalf of Growth and Income Fund.........................         A-1
PROSPECTUS OF GROWTH AND INCOME FUND, dated November 27, 1995
</TABLE>
 
                                       i
<PAGE>
                            ------------------------
 
                           PROXY STATEMENT/PROSPECTUS
                 HERCULES NORTH AMERICAN GROWTH AND INCOME FUND
                        SPECIAL MEETING OF SHAREHOLDERS
                            TO BE HELD JUNE 18, 1996
 
                            ------------------------
 
                                  INTRODUCTION
 
GENERAL
 
    This  Proxy  Statement/Prospectus  is  being  furnished  to  shareholders of
Hercules North American Growth and  Income Fund (the "Fund"), a  non-diversified
series of Hercules Funds Inc. ("the Company"), an open-end management investment
company,  in connection with the  solicitation by the Board  of Directors of the
Company (the  "Board")  of  proxies  to  be  used  at  the  Special  Meeting  of
Shareholders  of the Company to be held at  the office of the Company, 222 South
Ninth Street, 3rd Floor, Minneapolis, Minnesota  55402-3804 on June 18, 1996  at
10:00  a.m. central  time and  any adjournments  thereof (the  "Meeting"). It is
expected that this Proxy Statement/Prospectus will be mailed on or about May 17,
1996.
 
    At the Meeting, Fund shareholders will  consider and vote upon an  Agreement
and  Plan of  Reorganization, dated as  of April  15, 1996 (the  "Plan"), by and
between the Company, on behalf of the  Fund, and Piper Funds Inc. ("Piper"),  on
behalf  of Growth and Income Fund ("Growth  and Income Fund"), pursuant to which
substantially all of  the assets  of the  Fund will  be combined  with those  of
Growth  and Income Fund in  exchange for shares of Growth  and Income Fund. As a
result of this transaction, shareholders of the Fund will become shareholders of
Growth and Income Fund and will receive  shares in Growth and Income Fund  equal
to  the value of their holdings in the Fund on the date of such transaction (the
transactions described  above  are referred  to  as the  "Reorganization").  The
shares  to be issued  by Growth and  Income Fund pursuant  to the Reorganization
("Growth and Income Fund Shares")  will be issued at  net asset value without  a
sales  charge. Further  information relating  to Growth  and Income  Fund is set
forth in the current Prospectus of Growth and Income Fund attached to this Proxy
Statement/Prospectus and is incorporated herein by reference. A vote in favor of
the Plan will be considered a vote in  favor of an amendment to the articles  of
incorporation   of  the  Company  required   to  effect  the  reorganization  as
contemplated by the Plan.
 
    The information concerning the  Fund contained herein  has been supplied  by
the  Company and  the information  concerning Growth  and Income  Fund contained
herein has been supplied by Piper.
 
RECORD DATE; SHARE INFORMATION
 
    The Board has fixed the  close of business on April  25, 1996 as the  record
date  (the "Record Date") for the determination  of the holders of shares of the
Fund entitled to notice of, and to vote at, the Meeting. As of the Record  Date,
there  were 686,836 shares  of the Fund  issued and outstanding.  The holders of
record on the Record  Date of shares of  the Fund are entitled  to one vote  per
share  held and a fractional vote with respect to fractional shares held on each
matter submitted to  a vote at  the Meeting. The  holders of 10%  of the  shares
outstanding and entitled to vote will constitute a quorum at the Meeting.
 
    To  the knowledge of  the Board, as of  the Record Date,  no person owned of
record or beneficially 5% or more of  the outstanding shares of the Fund. As  of
the  Record Date, the directors  and officers of the  Company, as a group, owned
less than 1% of the outstanding shares of the Fund.
 
                                       1
<PAGE>
    To the knowledge of  Piper's Board of  Directors, as of  the Record Date  no
person  owned of record or beneficially 5%  or more of the outstanding shares of
Growth and Income Fund.  As of the  Record Date, the  directors and officers  of
Piper,  as a group, owned  less than 1% of the  outstanding shares of Growth and
Income Fund.
 
PROXIES
 
    The enclosed form of proxy, if properly executed and returned, will be voted
in accordance with  the choice  specified thereon. The  proxy will  be voted  in
favor  of the Plan  unless a choice is  indicated to vote  against or to abstain
from voting on the  Plan. The Board  knows of no business,  other than that  set
forth in the Notice of Special Meeting, to be presented for consideration at the
Meeting.  However, the  proxy confers  discretionary authority  upon the persons
named therein  to  vote as  they  determine  on other  business,  not  currently
contemplated, which may come before the Meeting.
 
    Abstentions will be included for purposes of determining whether a quorum is
present at the Meeting and for purposes of calculating the vote but shall not be
deemed  to have been voted in favor of such matters. Broker non-votes are shares
held in street name  for which the broker  indicates that instructions have  not
been  received from the beneficial owners or  other persons entitled to vote and
for which  the  broker does  not  have discretionary  voting  authority.  Broker
non-votes  will  be included  for purposes  of determining  whether a  quorum is
present at the Meeting, but will not be deemed to be represented at the  Meeting
for purposes of calculating whether matters to be voted upon at the Meeting have
been  approved. Because approval of  the Plan requires an  affirmative vote by a
majority of the outstanding  shares, abstentions and  broker non-votes all  have
the same effect as a negative vote.
 
    If a shareholder executes and returns a Proxy Card but fails to indicate how
the  votes should be  cast, the proxy  will be voted  in favor of  the Plan. The
proxy may be revoked at any time prior to the voting thereof by: (i)  delivering
written  notice of revocation to the Secretary of the Company at 222 South Ninth
Street, Minneapolis, Minnesota 55402-3804; (ii) attending the Meeting and voting
in person; or  (iii) signing and  returning a  new Proxy Card  (if returned  and
received  in time  to be voted).  Attendance at the  Meeting will not  in and of
itself revoke a proxy.
 
    In the event that sufficient votes to  approve the Plan are not obtained  by
the  Meeting date, or, subject  to approval of the  Board, for other reasons, an
adjournment or adjournments of the Meeting may be sought. Any adjournment  would
require  a vote in favor of the adjournment  by the holders of a majority of the
shares present  at the  Meeting (or  any adjournment  thereof) in  person or  by
proxy.  The persons named as proxies will vote all shares represented by proxies
which they  are  required  to  vote  in  favor of  the  Plan,  in  favor  of  an
adjournment,  and will vote all  shares which they are  required to vote against
the Plan, against an adjournment. Approval  of the Plan will be deemed  approval
of the amendment to the articles of incorporation of the Company attached to the
Plan.
 
EXPENSES OF SOLICITATION
 
    All  expenses  of this  solicitation, including  the  cost of  preparing and
mailing this  Proxy  Statement/  Prospectus,  will be  borne  by  Piper  Capital
Management Incorporated ("Piper Capital"), investment manager to the Company and
Piper.  In  addition to  the solicitation  of  proxies by  mail, proxies  may be
solicited by officers and regular employees of the Company, Piper Capital or the
Fund's  distributor,  without  compensation  other  than  regular  compensation,
personally  or  by mail,  telephone, telegraph  or otherwise.  Brokerage houses,
banks and other fiduciaries may be  requested to forward soliciting material  to
the beneficial owners of shares and to obtain authorization for the execution of
proxies.  For those services, if  any, they will be  reimbursed by Piper Capital
for their reasonable out-of-pocket expenses. In addition, arrangements have been
made with  Shareholder Communications  Corporation, an  independent  shareholder
communication firm, to assist in the solicitation of proxies.
 
                                       2
<PAGE>
VOTE REQUIRED
 
    Approval  of the  Plan by the  Fund's shareholders  requires the affirmative
vote of a majority (I.E., more than 50%) of the outstanding shares of the  Fund.
If the Plan is not approved by shareholders, the Fund will continue in existence
and the Board will consider alternative actions.
 
                                    SYNOPSIS
 
    THE FOLLOWING IS A SYNOPSIS OF CERTAIN INFORMATION CONTAINED OR INCORPORATED
BY REFERENCE IN THIS PROXY STATEMENT/PROSPECTUS. THIS SYNOPSIS IS ONLY A SUMMARY
AND  IS QUALIFIED IN ITS ENTIRETY BY  THE MORE DETAILED INFORMATION CONTAINED OR
INCORPORATED BY  REFERENCE  IN THIS  PROXY  STATEMENT/PROSPECTUS AND  THE  PLAN.
SHAREHOLDERS  SHOULD CAREFULLY  REVIEW THIS  PROXY STATEMENT/PROSPECTUS  AND THE
PLAN IN THEIR ENTIRETY AND, IN PARTICULAR, THE CURRENT PROSPECTUS OF GROWTH  AND
INCOME  FUND WHICH IS  ATTACHED TO THIS PROXY  STATEMENT/PROSPECTUS AND WHICH IS
INCORPORATED HEREIN BY REFERENCE.
 
THE REORGANIZATION
 
    The Plan provides for the transfer of substantially all of the assets of the
Fund, subject to stated liabilities, to  Growth and Income Fund in exchange  for
Growth  and Income  Fund Shares.  The aggregate  net asset  value of  Growth and
Income Fund Shares issued in the exchange will equal the aggregate value of  the
net  assets of  the Fund  received by Growth  and Income  Fund. On  or after the
closing date scheduled  for the  Reorganization (the "Closing  Date"), the  Fund
will distribute Growth and Income Fund Shares received by the Fund to holders of
shares  of  the  Fund  issued  and outstanding  as  of  the  Valuation  Date (as
hereinafter defined) in complete liquidation of the Fund. If all other series of
the Company effect similar reorganizations  or otherwise liquidate, the  Company
will  take  all  necessary  steps  to  effect  its  dissolution  as  a Minnesota
corporation and its deregistration under the Investment Company Act of 1940,  as
amended  (the  "1940  Act").  As  a  result  of  the  Reorganization,  each Fund
shareholder will receive that  number of full and  fractional Growth and  Income
Fund  Shares equal in value to such  shareholder's shares of the Fund. The Board
has determined that  the interests  of existing  Fund shareholders  will not  be
diluted as a result of the Reorganization.
 
    FOR  THE REASONS  SET FORTH BELOW  UNDER "THE REORGANIZATION  -- THE BOARD'S
CONSIDERATION,"  THE  BOARD,  INCLUDING  ALL  OF  THE  DIRECTORS  WHO  ARE   NOT
"INTERESTED  PERSONS" OF THE  COMPANY, AS THAT  TERM IS DEFINED  IN THE 1940 ACT
("INDEPENDENT DIRECTORS"), HAS UNANIMOUSLY CONCLUDED THAT THE REORGANIZATION  IS
IN  THE BEST INTERESTS OF THE FUND  AND ITS SHAREHOLDERS AND RECOMMENDS APPROVAL
OF THE PLAN.
 
FEE TABLE
 
    The funds each  pay a variety  of expenses for  management of their  assets,
distribution  of  their  shares  and  other  services,  and  those  expenses are
reflected in the net asset  value per share of each  of the Fund and Growth  and
Income  Fund.  The  following  table  sets  forth  the  expenses  and  fees that
shareholders of the Fund and Growth  and Income Fund incurred during the  twelve
months  ended September 30, 1995.  The Pro Forma Combined  fees reflect what the
fee schedule would have  been at September 30,  1995, if the Reorganization  had
occurred 12 months prior to that date.
 
    SHAREHOLDER TRANSACTION EXPENSES
 
<TABLE>
<CAPTION>
                                                                                  GROWTH AND     PRO FORMA
                                                                        FUND      INCOME FUND    COMBINED
                                                                      ---------  -------------  -----------
<S>                                                                   <C>        <C>            <C>
Maximum Sales Charge Imposed on Purchases
 (as a percentage of offering price) (1)............................         0%        4.00%         4.00%
Maximum Deferred Sales Charge (2)...................................      2.00%            0%           0%
Exchange Fee (3)....................................................  $       0  $          0   $        0
</TABLE>
 
                                       3
<PAGE>
    ANNUAL FUND OPERATING EXPENSES AS A PERCENTAGE OF AVERAGE NET ASSETS
 
<TABLE>
<CAPTION>
                                                                                  GROWTH AND     PRO FORMA
                                                                       FUND       INCOME FUND     COMBINED
                                                                    -----------  -------------  ------------
<S>                                                                 <C>          <C>            <C>
Management Fees (4)...............................................       1.00%         0.75%          0.75%
12b-1 Fees (after voluntary fee limitation) (5)...................       0.50%         0.32%          0.32%
Other Expenses (after voluntary expense reimbursement) (6)........       0.50%         0.25%          0.25%
                                                                        -----         -----          -----
Total Fund Operating Expenses (after voluntary fee limitation and
 expense reimbursement) (6).......................................       2.00%         1.32%          1.32%
</TABLE>
 
- ------------------------
(1) No sales charge will be imposed on Shares acquired in the Reorganization. On
    unrelated  purchases,  the  front  end  sales  charge  of  4.00%  applies to
    purchases less than $100,000 and scales down to 0% on purchases of  $500,000
    or more.
 
(2) The  maximum contingent deferred sales charge ("CDSC") on shares of the Fund
    is 2.00% on redemptions during the first 365 days after purchase; the charge
    declines to 1.00%  during the next  365 days after  purchase, reaching  zero
    thereafter.  In  connection  with purchases  of  Growth and  Income  Fund of
    $500,000 or more,  on which no  front-end sales charge  is imposed, a  1.00%
    CDSC  will be imposed on redemptions occurring within 24 months of purchase.
    See "Comparison  of  the Fund  and  Growth  and Income  Fund  --  Purchases,
    Redemptions and Exchanges."
 
(3) There  is a $50 fee for each exchange in excess of 12 exchanges per year for
    the Fund. There is a $5 fee for  each exchange in excess of 4 exchanges  per
    year for Growth and Income Fund.
 
(4) Growth  and Income Fund  pays monthly management  fees at an  annual rate of
    0.75% on assets up to  $100 million. These fees  are scaled downward as  net
    assets  increase in  size to  as low  as 0.50%  on net  assets of  over $500
    million.
 
(5) 12b-1 fees for  the Fund and  Growth and Income  Fund are currently  limited
    voluntarily  by  the  distributor  of the  funds,  Piper  Jaffray  Inc. (the
    "Distributor"). Absent such fee  limitation, the 12b-1  fees may not  exceed
    0.70%  and 0.50% per annum of the average  daily net assets for the Fund and
    Growth and Income Fund,  respectively. A portion of  the 12b-1 fee equal  to
    0.25%  of average daily net assets is  characterized as a service fee within
    the meaning of the National Association of Securities Dealers, Inc. ("NASD")
    guidelines.
 
(6) Piper Capital has voluntarily limited Total Fund Operating Expenses on a per
    annum basis to 2.00% and 1.32% of average daily net assets for the Fund  and
    Growth  and Income Fund,  respectively. As a  result, certain Other Expenses
    are currently borne by Piper Capital. Absent such waivers and reimbursements
    for the 12 months ended September  30, 1995, Other Expenses would have  been
    1.99%, 0.35% and 0.35%, each as a percentage of average daily net assets for
    the  Fund,  Growth  and  Income  Fund and  the  Pro  Forma  Combined column,
    respectively.  Without  such  limitations  and  the  12b-1  fee  limitations
    discussed  above,  Total Fund  Operating Expenses  for  the 12  months ended
    September 30, 1995, as a percentage of average daily net assets, would  have
    been  3.69%, 1.60% and  1.60% for the  Fund, Growth and  Income Fund and Pro
    Forma Combined column, respectively. After each fund's current fiscal  year,
    these  limitations may be  revised or terminated at  any time. Piper Capital
    and the Distributor do not presently intend to continue any limitations  for
    the Fund beyond the Fund's fiscal year ending June 30, 1996.
 
    EXAMPLE
 
    To  attempt to show the effect of these expenses on an investment over time,
the example shown below has been created. The expenses set forth in the  example
below  may increase if the fee  limitations and expense reimbursements discussed
above are removed.  As noted  above, Growth and  Income Fund  charges a  maximum
4.00%  front-end sales  charge on new  purchases. The expenses  shown below have
been calculated as if no such sales charge was imposed because Fund shareholders
who receive Growth and Income Fund Shares in the Reorganization will not pay the
front-end sales charge with
 
                                       4
<PAGE>
respect to those shares. Assuming that an investor makes a $1,000 investment  in
either the Fund or Growth and Income Fund or on a Pro Forma Combined basis, that
the  annual return is 5.00%  and that the Total  Fund Operating Expenses are the
ones shown in the chart above, if the investment was redeemed at the end of each
period shown below, the investor would  incur the following expenses by the  end
of each period shown:
 
<TABLE>
<CAPTION>
                                          1 YEAR   3 YEARS   5 YEARS    10 YEARS
                                          ------   -------   --------   --------
<S>                                       <C>      <C>       <C>        <C>
The Fund................................   $40       $63       $108       $233
Growth and Income Fund*.................   $13       $42       $ 72       $159
Pro Forma Combined**....................   $13       $42       $ 72       $159
</TABLE>
 
If  such investment  was not  redeemed, the  investor would  incur the following
expenses:
 
<TABLE>
<CAPTION>
                                          1 YEAR   3 YEARS   5 YEARS    10 YEARS
                                          ------   -------   --------   --------
<S>                                       <C>      <C>       <C>        <C>
The Fund................................   $20       $63       $108       $233
Growth and Income Fund*.................   $13       $42       $ 72       $159
Pro Forma Combined**....................   $13       $42       $ 72       $159
</TABLE>
 
- ------------------------
 *Expenses for shares of Growth and Income Fund purchased subject to the maximum
  front end sales charge  are: $53, $80,  $109, and $193  for the one-,  three-,
  five-, and ten-year periods shown, respectively.
**Expenses  for shares of Growth and Income  Fund on a Pro Forma Combined basis,
  purchased subject to the maximum front-end sales charge, are: $53, $80,  $109,
  and   $193  for  the   one-,  three-,  five-,   and  ten-year  periods  shown,
  respectively.
 
    THE ABOVE  EXAMPLE SHOULD  NOT BE  CONSIDERED A  REPRESENTATION OF  PAST  OR
FUTURE EXPENSES OR PERFORMANCE. ACTUAL OPERATING EXPENSES MAY BE GREATER OR LESS
THAN THOSE SHOWN.
 
    Long-term  shareholders of  either fund  may pay  more in  sales charges and
distribution fees than the  economic equivalent of  the maximum front-end  sales
charges permitted by the NASD.
 
TAX CONSEQUENCES OF THE REORGANIZATION
 
    As  a condition to the  Reorganization, the Fund will  receive an opinion of
the law firm Gordon Altman Butowsky Weitzen Shalov & Wein to the effect that the
Reorganization will constitute a tax-free reorganization for Federal income  tax
purposes,  and  that no  gain or  loss will  be  recognized by  the Fund  or the
shareholders of the  Fund for Federal  income tax  purposes as a  result of  the
Reorganization.  For  further  information  about the  tax  consequences  of the
Reorganization, see "The  Reorganization -- Tax  Aspects of the  Reorganization"
below.
 
DISSENTING SHAREHOLDERS' RIGHTS OF APPRAISAL
 
    Although  under  Minnesota  law  shareholders of  a  company  acquired  in a
reorganization who  do not  vote to  approve the  reorganization generally  have
"appraisal  rights" (where  they may  elect to  have the  "fair value"  of their
shares (determined in  accordance with Minnesota  law) judicially appraised  and
paid to them), the Division of Investment Management of the Commission has taken
the position that Rule 22c-1 under the 1940 Act preempts appraisal provisions in
state  statutes.  This rule  provides that  no  open-end investment  company may
redeem its shares other than at net asset value next computed after receipt of a
tender of such security for redemption. For further information about rights  of
appraisal, see "The Reorganization -- Dissenters' Rights".
 
COMPARISON OF THE FUND AND GROWTH AND INCOME FUND
 
    INVESTMENT  OBJECTIVES AND  POLICIES.  The  Fund and Growth  and Income Fund
have similar investment objectives. The Fund's objectives are long-term  capital
appreciation  and current income. The investment objectives of Growth and Income
Fund are  current  income  and  long-term growth  of  capital  and  income.  The
investment objectives of the Fund and Growth and Income Fund are fundamental and
may not be changed without shareholder approval.
 
                                       5
<PAGE>
    The  Fund seeks  to achieve  its investment  objectives by  investing, under
normal circumstances, at  least 65% of  its total assets  in U.S., Canadian  and
Mexican  securities.  Growth and  Income Fund  seeks  to achieve  its investment
objectives by investing in a  broadly diversified portfolio of securities,  with
an emphasis on securities of large, established companies that have a history of
dividend  payments and that the investment adviser believes are undervalued. The
principal difference  between the  two  funds is  that  Growth and  Income  Fund
invests  at least 95% of its assets  in U.S. equity and debt securities, whereas
the Fund invests in U.S. securities and Canadian and Mexican securities.
 
    For both  funds, companies  are selected  on the  basis of  Piper  Capital's
assessment   (and  the  sub-adviser's,  in  the  case  of  the  Fund's  non-U.S.
investments) of their prospects for  long-term growth in dividends and  earnings
in  relationship to the prevailing market price.  With respect to the Growth and
Income  Fund,  Piper  Capital  also  considers  other  factors,  including   the
sensitivity of a company's particular industry to fluctuations in major economic
variables, such as interest rates and industrial production. With respect to the
Fund,  emphasis is placed  on investments in companies  which Piper Capital (and
the sub-advisers,  in  the  case  of non-U.S.  investments)  believes  are  well
positioned  to benefit  from the  cross-border commerce  among the  countries in
North America which is currently taking place  and is expected to increase as  a
result of government initiatives to promote free cross-border trade.
 
    The  Fund may invest without limitation  in equity and investment grade debt
securities. Growth and Income Fund may also invest without limitation in  equity
and  investment  grade debt  securities but  under normal  circumstances invests
primarily in common stock and securities convertible into common stock.
 
    The Fund may purchase and sell  put and call options, futures contracts  and
options  on futures contracts  with respect to  financial instruments, stock and
interest rate indexes and foreign currencies. Futures and options may be used to
facilitate allocation of the Fund's investment among asset classes, to  generate
income  or to hedge against declines in securities prices or increases in prices
of securities proposed to be purchased. Growth and Income Fund may, for  hedging
purposes  only,  buy put  and call  options on  the securities  in which  it may
invest, buy exchange-traded stock index options and enter into interest rate and
stock index  futures contracts,  and options  thereon. In  addition, Growth  and
Income  Fund  may  sell covered  options  and  stock index  options  for hedging
purposes or to generate income.  The Fund may buy  or sell options, futures  and
options   on  futures  that   are  traded  on  U.S.   or  foreign  exchanges  or
over-the-counter; however, Growth  and Income  Fund may purchase  and sell  only
exchange-traded  options, futures and options on  futures. In addition, the Fund
may,  but  Growth  and  Income  Fund  may  not,  enter  into  currency  exchange
transactions  (including forward foreign currency exchange contracts and futures
and options contracts on foreign currencies) as a hedge against fluctuations  in
foreign  exchange rates. To date, the Fund has not engaged in options on futures
contracts, options  on stock  and  interest rate  indexes or  currency  exchange
transactions other than forward contracts.
 
    Both  the  Fund and  Growth and  Income  Fund may  purchase securities  on a
when-issued or  delayed delivery  basis and  purchase or  sell securities  on  a
forward  commitment basis. Growth and  Income Fund may, while  the Fund may not,
purchase securities on a "when,  as and if issued"  basis. Both funds may  enter
into  repurchase agreements subject  to certain procedures  designed to minimize
risks associated with such agreements. The Fund may also (i) invest in  warrants
up to 5% of its net assets; (ii) invest in American Depository Receipts ("ADRs")
and  similar instruments; and (iii) invest  in other investment companies (up to
the limits prescribed by the 1940 Act);  Growth and Income Fund does not  invest
in  these types  of instruments  and, accordingly, only  the Fund  is exposed to
risks associated with them. Growth and Income Fund may lend portfolio securities
up to one-third of the value of its  total assets; the Fund does not enter  into
these  types of  transactions and, accordingly,  only Growth and  Income Fund is
exposed to risks associated with securities lending.
 
    In addition, the Fund  is a non-diversified  investment company, within  the
meaning  of  the 1940  Act,  whereas Growth  and  Income Fund  is  a diversified
investment company.
 
                                       6
<PAGE>
    For a more detailed comparison of the investment objectives and policies  of
the  Fund and Growth and Income  Fund, see "Comparison of Investment Objectives,
Policies and Restrictions," below.
 
    INVESTMENT MANAGEMENT AND DISTRIBUTION PLAN FEES.   The Fund and Growth  and
Income  Fund have the same Board of  Directors. In addition, the Fund and Growth
and Income Fund obtain  management services from Piper  Capital. For each  fund,
fees are payable monthly based on the average net asset value of such fund as of
the close of business each day. The Fund pays a management fee at an annual rate
of 1.00% of its average daily net asset value and Growth and Income Fund pays at
the  annual rate of 0.75% of the portion  of average daily net assets up to $100
million, 0.65% of such  assets between $100 million  and $300 million, 0.55%  of
such  assets between $300 million and $500  million, and 0.50% of the portion of
daily net assets exceeding $500 million.
 
    With respect to the  Fund, Piper Capital has  retained the services of  Acci
Worldwide,  S.A. de C.V.  ("Acci") and AGF Investment  Advisers, Inc. ("AGF") as
sub-advisers for  investments in  Mexican  and Canadian  issuers,  respectively.
Piper Capital manages the Fund's investments in U.S. securities. As compensation
for  their portfolio management  services, Piper Capital,  Acci and AGF together
receive monthly compensation, calculated  in the same  manner as the  investment
advisory  fee, of 0.50%  of net assets  of the Fund.  This fee is  paid by Piper
Capital and is split equally among Piper Capital, Acci and AGF without regard to
the amount of assets under their respective management at any one time.
 
    Both the Fund  and Growth and  Income Fund have  adopted distribution  plans
(each,  a "12b-1 Plan")  pursuant to Rule  12b-1 under the  1940 Act pursuant to
which the Distributor  is compensated  for its expenses  incurred in  connection
with  servicing  of  the  funds' shareholder  accounts  and  in  connection with
distribution-related services provided with respect to each 12b-1 Plan. Payments
under the 12b-1 Plan  may not exceed  0.70% of average daily  net assets in  the
case  of  the  Fund  and 0.50%  in  the  case  of Growth  and  Income  Fund. The
Distributor has  voluntarily limited  reimbursements under  each 12b-1  Plan  to
0.50%  in the case of the Fund and 0.32%  in the case of Growth and Income Fund.
In the  case of  Growth  and Income  Fund, this  limitation  may be  revised  or
terminated at any time after its fiscal year end. In the case of the Fund, Piper
Capital   and  the  Distributor  do  not  presently  intend  to  continue  these
limitations beyond the Fund's current fiscal year. Payments made under the 12b-1
Plans for  the Fund  and Growth  and Income  Fund are  not tied  exclusively  to
expenses actually incurred by the Distributor and may exceed such expenses.
 
    OTHER  SIGNIFICANT  FEES.   Both the  Fund  and Growth  and Income  Fund pay
additional fees in connection with their operations, including legal,  auditing,
transfer  agent and custodial fees. See "Fee  Table" above for the percentage of
average net assets represented by such Other Expenses.
 
    PURCHASES, REDEMPTIONS AND EXCHANGES.
 
    PURCHASES.  The  Fund and  Growth and  Income Fund  each continuously  issue
    their shares to investors at a price equal to net asset value at the time of
such  issuance.  Investors  in  Growth  and Income  Fund,  however,  also  pay a
front-end sales charge of 4.00% on  purchases of less than $100,000 scaled  down
to  0% on purchases of $500,000 and  above. Shareholders of the Fund who acquire
Growth and Income Fund Shares in  the Reorganization will not pay the  front-end
sales  charge on  such Shares;  however, such  sales charge  will be  applied to
additional purchases of Growth  and Income Fund. Shares  of the Fund and  Growth
and  Income Fund are distributed by the Distributor and other broker-dealers who
have entered  into  selected  broker-dealer  agreements  with  the  Distributor.
Purchase  orders for shares of  the Fund will not be  accepted after the date on
which the Plan is approved by Fund shareholders.
 
    REDEMPTIONS.  Shareholders of the Fund and Growth and Income Fund may redeem
    their shares for  cash at any  time at the  net asset value  per share  next
determined;  however, such redemption proceeds will  be reduced by the amount of
any applicable contingent deferred sales charge ("CDSC"). In most circumstances,
redemptions of Fund shares made  within two years of  purchase are subject to  a
CDSC,  scaled down from 2.00%  to 1.00% of the amount  redeemed. No CDSC will be
applied to shares of the Fund at the time of the Reorganization or to Growth and
Income Fund Shares acquired in the Reorganization on redemption of such  shares.
With respect to Growth and Income Fund, shareholders
 
                                       7
<PAGE>
who  invested more than $500,000 and accordingly paid no front-end sales charge,
are in most circumstances  subject to a  CDSC if shares  are redeemed within  24
months. The charge is equal to 1.00% of the lesser of the net asset value of the
shares  at the time of purchase or at  the time of redemption. Growth and Income
Fund offers a reinstatement  privilege whereby a  shareholder whose shares  have
been  redeemed may, within thirty  days after the date  of redemption invest any
portion or all of the proceeds thereof in another fund managed by Piper  Capital
(other  than portfolios of  the Company) without payment  of an additional sales
charge, or if such redemption was subject to  a CDSC, a pro rata credit will  be
given   for  such  CDSC.  The  Fund  and  Growth  and  Income  Fund  may  redeem
involuntarily, at net asset value, accounts valued at less than $200.
 
    EXCHANGES.  Each of the Fund and  Growth and Income Fund makes available  to
    its  shareholders exchange privileges allowing exchange of shares for shares
of certain other funds. Shares of the Fund may be exchanged for shares of any of
the five other  series of  the Company.  Growth and  Income Fund  Shares may  be
exchanged for shares of any of the 15 other funds open to new investors that are
advised  by Piper  Capital. Both  the Fund  and Growth  and Income  Fund provide
telephone exchange privileges to their shareholders.
 
    For a  more  detailed discussion  of  purchasing, redeeming  and  exchanging
Growth  and Income Fund  shares, see "Shareholder  Guide to Investing  -- How to
Purchase Shares", "--  How to Redeem  Shares" and "--  Shareholder Services"  in
Growth and Income Fund's current Prospectus.
 
    DIVIDENDS.   Dividends from  anticipated net investment  income are declared
and paid quarterly  by Growth  and Income  Fund and  annually by  the Fund.  Net
short-term  capital gains and long-term capital  gains distributions are paid at
least once annually by both funds. Dividends and capital gains distributions  of
both  the  Fund  and Growth  and  Income  Fund are  automatically  reinvested in
additional shares at net  asset value unless the  shareholder elects to  receive
cash.
 
                             PRINCIPAL RISK FACTORS
 
    The  Fund and Growth  and Income Fund are  subject to the  same risks to the
extent each invests  in equity  and debt  securities, namely,  market risk  with
respect  to  equity investments  and  credit risk  and  interest rate  risk with
respect to investments in debt securities. However, because the Fund pursues its
investment objectives  in part  through investment  in foreign  securities,  and
Growth  and Income  Fund does  not, the  Fund is  also exposed  to the  risks of
international investing. These risks include: risks relating to adverse currency
fluctuations, potential political and economic instability of countries in which
the Fund invests, limited liquidity and greater volatility of prices as compared
to U.S.  securities,  investment  and  repatriation  restrictions,  and  foreign
taxation.
 
    The  Fund,  unlike  Growth  and  Income  Fund,  invests  in  options  traded
over-the-counter (OTC).  OTC  options trading  has  no daily  price  fluctuation
limits  and  OTC options  are considered  illiquid.  Furthermore, only  the Fund
engages in currency forward contracts. These transactions are affected by all of
the factors  which  influence foreign  exchange  rates and  foreign  investments
generally,  as well as  limited reporting of  last sale quotations, limitations,
charges or  taxes  associated  with  making or  accepting  delivery  of  foreign
currencies, and the absence of an established secondary market.
 
    In  addition, as discussed  above, the Fund  is a non-diversified investment
company under the  1940 Act,  whereas Growth and  Income Fund  is a  diversified
investment  company. As a result, the Fund may invest a higher percentage of its
assets in a more limited number of issuers than Growth and Income Fund.
 
    The foregoing discussion is a summary  of the principal risk factors. For  a
more  complete  discussion  of  the  risks  of  each  fund,  see  "Special  Risk
Considerations" in the Fund's Prospectus and "Investment Objectives and Policies
- -- Growth  and Income  Fund --  Investment Risks"  in Growth  and Income  Fund's
Prospectus.
 
                                       8
<PAGE>
                               THE REORGANIZATION
 
BACKGROUND
 
    The  Company  was managed  initially  through a  joint  venture ("Hercules")
between Piper  Jaffray  Companies, Inc.  ("Piper  Jaffray") and  Midland  Walwyn
Capital  Corporation ("Midland") pursuant to which the parties agreed to jointly
promote, distribute and  manage a family  of international funds  in the  United
States and Canada. Shares of the Company were first offered to the public in the
U.S. on November 9, 1993.
 
    The  Company's shares, including shares of the Fund, were originally offered
for sale with no front-end or back-end  sales charge. In lieu of a sales  charge
paid  by investors, Hercules and each sub-adviser retained by Hercules to manage
the portfolio of each series of the Company, advanced to broker-dealers a  sales
commission  (except with respect to  the Money Market Fund)  in the aggregate of
2.00% of the net asset value of  shares purchased. If a shareholder redeemed  in
less  than two years,  all or a  portion of the  advanced commission was charged
back to the broker-dealer.  If a shareholder exchanged  among the series  within
the  same two year period, the sub-advisers paid,  or were paid, as the case may
be, a portion of the commission advance  that had not yet been recovered.  While
initially  the Company, including the Fund, experienced positive growth, a trend
of net redemptions commenced in November of 1994 which has yet to be reversed.
 
    In April 1995, Piper Jaffray and Midland announced their mutual agreement to
terminate  the  joint  venture  arrangement  and  to  dissolve  Hercules.  After
requisite  shareholder approval was obtained in July 1995, Piper Capital assumed
the role of manager and investment adviser for the Company.
 
    After becoming  manager  to  the  Company,  Piper  Capital  focused  on  the
structure,  pricing and  marketing of the  various Hercules funds  in the United
States in an attempt to promote asset growth in the funds and reverse the  trend
of  net redemptions. In particular, it  invested considerable time and financial
resources to develop a distribution  network with broker-dealers in addition  to
Piper Jaffray because Piper Capital believed that the development of an external
distribution  system was critical to the successful distribution of the Hercules
funds.
 
    As part of this effort, a change in the pricing structure was implemented in
June 1995  incorporating a  CDSC. Implementation  of the  CDSC was  intended  to
eliminate the need to recoup from the broker-dealer through whom the shares were
sold  the  commissions  advanced  to  it by  Piper  Capital  and  the applicable
sub-adviser in the event of a redemption  within two years of purchase. In  lieu
thereof,  shareholders would be required to pay  a declining CDSC if shares were
redeemed within  two  years of  purchase.  It  was believed  that  this  pricing
structure  would  prove  attractive  to  broker-dealers  as  well  as  to future
investors. The implementation  of the CDSC  did not, however,  have the  desired
effect on growth. Rather, the trend of net redemptions continued. Latin American
Value Fund and Money Market Fund are the only Hercules funds which have had even
one  month since October 1994  where shareholder purchases exceeded redemptions.
Moreover,  sales  through  broker-dealers  other  than  Piper  Jaffray  remained
minimal.
 
    The  continuing  inability to  achieve asset  growth  in the  Hercules funds
prompted a further review by Piper Capital of the future prospects of the funds.
Ultimately, Piper Capital concluded that it is unlikely that the Hercules  funds
will,  in the foreseeable  future grow to  a sufficient size  to be economically
viable. Accordingly, Piper Capital recommended to the Board of Directors of  the
Company that the Hercules funds be eliminated as a free standing family of funds
and  that instead each Hercules fund be combined with an appropriate fund within
the Piper family of funds  (or in the case of  World Bond Fund and Money  Market
Fund, that the fund be liquidated).
 
THE BOARD'S CONSIDERATION
 
    At  a meeting  of the  Board of  Directors held  on February  6, 1996, Piper
Capital reviewed for the Board the basis for its recommendation. It detailed the
efforts that have been made since inception of
 
                                       9
<PAGE>
the Hercules Funds to promote and market the funds, the continuing inability  to
reverse  the trend  of net  redemptions that  has continued  since November 1994
despite these efforts,  and the basis  for its pessimistic  view respecting  the
Company's future prospects.
 
    At  its  meeting  on February  6,  1996,  the Board,  including  all  of the
Independent Directors, unanimously approved the Reorganization and, on March 29,
1996, approved the  Plan and determined  to recommend that  shareholders of  the
Fund approve the Plan.
 
    In  determining whether to  recommend that shareholders  of the Fund approve
the Plan,  the  Board, with  the  advice  and assistance  of  independent  legal
counsel,  inquired into a number of matters. In particular, the Board considered
the Company's  prospects for  future  growth and  the effect  upon  shareholders
should  assets remain at current  levels or continue to  be reduced further. The
Board considered in this regard that since the commencement of operations, Piper
Capital (or Hercules) has voluntarily limited total expenses of the Fund and the
Distributor has voluntarily limited its 12b-1 fees payable by the Fund and  that
they  do not  presently intend to  continue these limitations  beyond the Fund's
fiscal year ending June 30, 1996. The Board noted that absent such assumption of
expenses and waiver of fees, the expense ratio of the Fund for the most  current
fiscal year would have been considerably higher and total return lower.
 
    The   Board  carefully  considered  the   compatibility  of  the  investment
objectives, policies, restrictions  and portfolios  of the Fund  and Growth  and
Income  Fund.  In  particular  the  Board  focused  on  the  differences  in the
investment policies of the Fund and Growth and Income Fund. The most significant
difference between the  two, as  discussed more  fully below  in "Comparison  of
Investment  Objectives, Policies  and Restrictions --  Investment Objectives and
Policies," is that the Fund invests primarily in securities of the U.S.,  Canada
and  Mexico, whereas Growth and Income Fund  invests only in U.S. securities. In
considering the suitability of  Growth and Income Fund  for shareholders of  the
Fund  given Growth and Income Fund's focus solely on U.S. investments, the Board
noted the  substantial percentage  of the  Fund's assets  invested in  the  U.S.
(approximately  57% of the Portfolio as of  January 31, 1996), and the fact that
the sub-adviser responsible for the U.S. investments of the Fund, Piper Capital,
is also the investment adviser of Growth and Income Fund.
 
    The Board also took into account Piper Capital's view that a combination  of
the  Fund with  another fund which  more closely  resembles the Fund  may not be
practicable because there are so few North American funds and the small size  of
the Fund makes it less attractive as a merger candidate.
 
    In  addition,  the  Board  considered  the  comparative  expenses  currently
incurred in the operation of the Fund and Growth and Income Fund, the terms  and
conditions  of the proposed  Reorganization, the comparative  performance of the
funds, Piper Capital's  undertaking to  pay all  the direct  costs (E.G.,  proxy
solicitation)  of the Reorganization,  and the indirect  costs (E.G., brokerage)
likely to be  incurred by the  Fund in the  Reorganization. In recommending  the
Reorganization  to the shareholders  of the Fund, the  Board considered that the
Reorganization would have the following benefits for shareholders of the Fund:
 
        1.  The total expenses borne by shareholders of the combined fund should
    be lower on  a percentage basis  than the  total expenses per  share of  the
    Fund.  The Fund's expense ratio for its  fiscal year ended June 30, 1995 was
    2.00%, giving  effect  to waivers  and  expense reimbursements  which  Piper
    Capital  and the Distributor  intend to discontinue  after the Fund's fiscal
    year ending June 30, 1996. Absent such waivers and reimbursements,  expenses
    would  have been 3.39%. By contrast, the expense ratio for Growth and Income
    Fund for its fiscal year ended September 30, 1995 was 1.32% (or 1.60% absent
    fee limitations and expense reimbursements). The Distributor has voluntarily
    agreed to limit  the 12b-1  fee to  an annual rate  of 0.32%  of Growth  and
    Income Fund's average daily net assets for its current fiscal year and Piper
    Capital  has voluntarily agreed to reimburse  Growth and Income Fund for the
    amount by which total fund operating  expenses exceed 1.32% for its  current
    fiscal  year. In addition, Growth and Income Fund's advisory fee scales down
    as asset levels increase, and, because Growth and Income Fund is much larger
    than the Fund, there is the opportunity to benefit from economies of  scale,
    greater investment diversification and facilitation of portfolio management.
 
                                       10
<PAGE>
        2.   Shareholders of the  Fund will be able  to acquire shares of Growth
    and Income Fund, which  are otherwise subject to  a maximum 4.00%  front-end
    sales  charge, at net asset value  and pursue a similar investment objective
    in a larger and more economically  viable fund without having to sell  their
    shares. Moreover, shareholders will be able to redeem the shares so acquired
    at  net asset value without any CDSC being imposed and will not pay any CDSC
    on Fund shares converted in the Reorganization.
 
        3.  The Fund's shareholders would retain the capabilities and  resources
    of  Piper Capital and its affiliates in the areas of operations, management,
    distribution, shareholder servicing and marketing.
 
        4.  The Reorganization would enable the Fund's shareholders to enjoy  an
    expanded range of mutual fund investment options. The Piper Funds complex of
    which  Growth  and  Income Fund  is  a  part, includes  fifteen  mutual fund
    portfolios that  will be  available for  exchange by  Fund shareholders  who
    receive Growth and Income Fund Shares in the Reorganization.
 
        5.   The  Reorganization will  constitute a  tax-free reorganization for
    Federal income tax purposes, and no gain  or loss will be recognized by  the
    Fund  or its shareholders for Federal income tax purposes as a result of the
    Reorganization.
 
    Based on the foregoing, the Board  determined that the Reorganization is  in
the  best interests of  the shareholders of  the Fund and  that the interests of
Fund shareholders will not be diluted as a result thereof.
 
    The Board  of Directors  of Growth  and Income  Fund, including  all of  the
Independent  Directors, has  also determined that  the Reorganization  is in the
best interests of  Growth and  Income Fund and  that the  interests of  existing
shareholders  of Growth and Income Fund will not be diluted as a result thereof.
The transaction  will  enable  Growth  and Income  Fund  to  acquire  investment
securities  which are consistent with its objectives without the brokerage costs
attendant to the purchase of such  securities in the market. Also, the  addition
of the Fund's assets should result in some cost savings to the extent that fixed
expenses  of Growth and  Income Fund can be  spread over a  larger asset base. A
larger asset base  could also lead  to reduced  management fees as  a result  of
"breakpoints" in the management fees payable by Growth and Income Fund.
 
THE PLAN
 
    The terms and conditions under which the Reorganization would be consummated
are set forth in the Plan and are summarized below. This summary is qualified in
its  entirety by reference to the Plan, a copy of which is attached as EXHIBIT A
to this Proxy Statement/Prospectus.
 
    The Plan  provides  that (i)  the  Fund will  transfer  all of  its  assets,
including  appropriate portfolio securities, cash, cash equivalents, securities,
commodities, futures and dividend and interest receivables to Growth and  Income
Fund  on the Closing  Date in exchange  for the assumption  by Growth and Income
Fund of the Fund's  stated liabilities, including  all expenses, costs,  charges
and  reserves, as reflected on an  unaudited statement of assets and liabilities
of the Fund prepared by the Treasurer of the Company as of the Valuation Date in
accordance with generally  accepted accounting  principles consistently  applied
from  the  prior audited  period, and  the  delivery of  Growth and  Income Fund
Shares; (ii)  such Growth  and Income  Fund Shares  will be  distributed to  the
shareholders  of  the  Fund  on  the Closing  Date  or  as  soon  as practicable
thereafter; and (iii) the Company shall be dissolved as a Minnesota  corporation
and deregistered as an investment company under the 1940 Act, promptly following
the  making of all  distributions and the reorganization  or liquidation of each
other series of the Company. In most cases, reorganization or liquidation of the
other series is  contingent on  obtaining the  approval of  shareholders of  the
series.
 
    For technical reasons, certain of the Fund's existing investment limitations
may  be deemed to preclude the Fund  from consummating the Reorganization to the
extent that the Reorganization
 
                                       11
<PAGE>
would involve the Fund holding all of its assets as shares of Growth and  Income
Fund  until such shares are distributed to the Fund's shareholders. By approving
the Plan, the Fund's shareholders will be deemed to have agreed to waive each of
these limitations.
 
    The number of Growth and Income Fund Shares to be delivered to the Fund will
be determined by dividing the  value of the Fund  assets acquired by Growth  and
Income Fund (net of stated liabilities assumed by Growth and Income Fund) by the
net  asset  value  of a  Growth  and Income  Fund  Share; these  values  will be
calculated as of  the close  of business  of the New  York Stock  Exchange on  a
business  day not later than the fifth business day following the receipt of the
requisite approval of the Plan by the shareholders of the Fund or at such  other
time  as the Fund and  Growth and Income Fund  may agree (the "Valuation Date").
The net asset value  of a Growth and  Income Fund Share shall  be the net  asset
value  per share computed on the  Valuation Date, using the valuation procedures
set forth in Growth and Income  Fund's then current Prospectus and Statement  of
Additional  Information. As an  illustration, if on the  Valuation Date the Fund
were to have securities with a market value of $95,000 and cash in the amount of
$5,000, the value of the assets which would be transferred to Growth and  Income
Fund  would be $100,000. If  the net asset value per  share of Growth and Income
Fund were $10  per share at  the close of  business on the  Valuation Date,  the
number  of shares to be issued would  be 10,000 ($100,000 DIVIDED BY $10). These
10,000 shares  of Growth  and Income  Fund would  be distributed  to the  former
shareholders  of the Fund. This example  is given for illustration purposes only
and does not bear any relationship to  the dollar amounts or shares expected  to
be  involved  in  the Reorganization.  Growth  and  Income Fund  will  cause its
transfer agent to credit and confirm an appropriate number of Growth and  Income
Fund  Shares to each  Fund shareholder. Neither  the Fund nor  Growth and Income
Fund issues stock certificates.
 
    The Closing Date will be the next business day following the Valuation Date,
or at such  other time as  the Fund and  Growth and Income  Fund may agree.  The
consummation  of  the  Reorganization is  contingent  upon the  approval  of the
Reorganization by the  shareholders of  the Fund and  the receipt  of the  other
opinions  and certificates set forth in Sections 6,  7 and 8 of the Plan and the
occurrence of the events  described in those Sections,  certain of which may  be
waived  by the Fund  or Growth and Income  Fund. The Plan may  be amended in any
mutually agreeable manner, except  that no amendment may  be made subsequent  to
the  Meeting which would detrimentally affect the  value of the shares of Growth
and Income Fund  to be  distributed. Piper Capital  will bear  all direct  costs
associated  with the Reorganization including  preparation, printing, filing and
proxy solicitation  expenses incurred  in  connection with  obtaining  requisite
shareholder approval of the Reorganization.
 
    The  Plan may  be terminated and  the Reorganization abandoned  at any time,
before or after approval  by the Fund's shareholders,  by mutual consent of  the
Fund  and Growth and  Income Fund. In  addition, either party  may terminate the
Plan upon the occurrence of a material breach of the Plan by the other party  or
if,  by September  15, 1996, any  condition set forth  in the Plan  has not been
fulfilled or waived by the party entitled to its benefits.
 
    The effect of the Reorganization is  that shareholders of the Fund who  vote
their  shares in favor of the Plan are electing to sell their shares of the Fund
(at net asset value on the Valuation  Date) and reinvest the proceeds in  Growth
and  Income Fund at net  asset value and without  recognition of taxable gain or
loss for Federal income tax purposes. Prior to the Valuation Date, the Fund will
declare and  pay a  dividend to  distribute all  of its  accumulated  investment
company  taxable  income and  net capital  gain,  if any.  The proceeds  of such
distribution may  be taxable  to  Fund shareholders.  See  "Tax Aspects  of  the
Reorganization"  below. All contracts entered  into by or on  behalf of the Fund
will terminate upon consummation of the Reorganization.
 
    Shareholders of the Fund will continue to be able to redeem their shares  at
net  asset value (subject to any  applicable CDSC) next determined after receipt
of the redemption request until the close  of business on the business day  next
preceding  the Closing Date. Redemption requests received by the Fund thereafter
will be treated as requests for redemption of shares of Growth and Income Fund.
 
                                       12
<PAGE>
TAX ASPECTS OF THE REORGANIZATION
 
    At least one but not more than 20 business days prior to the Valuation Date,
the Fund will declare and pay a  dividend or dividends which, together with  all
previous  such dividends,  will have  the effect  of distributing  to the Fund's
shareholders all of the Fund's investment company taxable income for all periods
since inception of the Fund through  and including the Valuation Date  (computed
without  regard to  any dividends  paid deduction),  and all  of the  Fund's net
capital gain, if any, realized in such periods (after reduction for any  capital
loss carry-forward).
 
    The Reorganization is intended to qualify for Federal income tax purposes as
a  tax-free reorganization under Section 368(a)(1)  of the Internal Revenue Code
of 1986, as amended (the "Code").  The Company and Piper have represented  that,
to  their best knowledge, there is no  plan or intention by Fund shareholders to
redeem, sell, exchange  or otherwise dispose  of a number  of Growth and  Income
Fund Shares received in the transaction that would reduce the Fund shareholders'
ownership of Growth and Income Fund Shares to a number of shares having a value,
as  of the Closing Date,  of less than 50%  of the value of  all of the formerly
outstanding the Fund shares as of the same date. The Company and Piper have each
further represented that, as of the Closing Date, the Fund and Growth and Income
Fund will  qualify as  regulated investment  companies. In  addition, Piper  has
further  represented that  Growth and  Income Fund  will qualify  as a regulated
investment company for its current fiscal year.
 
    As a condition to  the Reorganization, the Fund  and Growth and Income  Fund
will  receive an opinion of  Gordon Altman Butowsky Weitzen  Shalov & Wein that,
based on  certain assumptions,  facts,  the terms  of  the Plan  and  additional
representations set forth in the Plan or provided by the Company and Piper:
 
        1.   The transfer of substantially all  of the Fund's assets in exchange
    for Growth and Income  Fund Shares and the  assumption by Growth and  Income
    Fund  of certain stated liabilities of the Fund followed by the distribution
    by the Fund of  Growth and Income  Fund Shares to  the Fund Shareholders  in
    exchange for their Fund shares will constitute a "reorganization" within the
    meaning of Section 368(a)(1) of the Code, and the Fund and Growth and Income
    Fund  will  each be  a "party  to  a reorganization"  within the  meaning of
    Section 368(b) of the Code;
 
        2.  No gain or  loss will be recognized by  Growth and Income Fund  upon
    the  receipt of  the assets of  the Fund  solely in exchange  for Growth and
    Income Fund  Shares and  the assumption  by Growth  and Income  Fund of  the
    stated liabilities of the Fund;
 
        3.   No gain or loss will be recognized by the Fund upon the transfer of
    the assets of the Fund to Growth and Income Fund in exchange for Growth  and
    Income  Fund Shares  and the  assumption by  Growth and  Income Fund  of the
    stated liabilities or upon the distribution of Growth and Income Fund Shares
    to the Fund's shareholders in exchange for their Fund shares;
 
        4.  No gain or loss will be recognized by the Fund shareholders upon the
    exchange of the shares of the Fund for Growth and Income Fund Shares;
 
        5.  The aggregate tax basis  for Growth and Income Fund Shares  received
    by  each of the  Fund's shareholders pursuant to  the reorganization will be
    the same as the aggregate tax basis of  the shares in the Fund held by  each
    such shareholder of the Fund immediately prior to the Reorganization;
 
        6.   The holding period of Growth  and Income Fund Shares to be received
    by each shareholder  of the Fund  will include the  period during which  the
    shares in the Fund surrendered in exchange therefor were held (provided such
    shares  in  the  Fund  were  held  as capital  assets  on  the  date  of the
    Reorganization);
 
        7.  The  tax basis  of the  assets of the  Fund acquired  by Growth  and
    Income  Fund will be  the same as the  tax basis of such  assets to the Fund
    immediately prior to the Reorganization; and
 
                                       13
<PAGE>
        8.  The holding period of the assets of the Fund in the hands of  Growth
    and  Income Fund will include the period during which those assets were held
    by the Fund.
 
    The Reorganization will be treated as a "change in ownership" under  Section
382 of the Code. It is not anticipated that any resulting limitations on the use
of  any capital loss carryovers  of the Fund will  be material. In addition, the
economic benefit of any capital loss  carryovers of the Fund would be  available
to  shareholders of the combined  entity with a resulting  benefit to Growth and
Income Fund shareholders. It  is not anticipated that  any such benefit will  be
material.
 
    SHAREHOLDERS  OF THE  FUND SHOULD CONSULT  THEIR TAX  ADVISERS REGARDING THE
EFFECT, IF  ANY,  OF THE  PROPOSED  TRANSACTION  IN LIGHT  OF  THEIR  INDIVIDUAL
CIRCUMSTANCES.  BECAUSE  THE FOREGOING  DISCUSSION ONLY  RELATES TO  THE FEDERAL
INCOME TAX CONSEQUENCES OF  THE PROPOSED TRANSACTION,  SHAREHOLDERS OF THE  FUND
SHOULD  ALSO CONSULT THEIR TAX ADVISERS AS  TO STATE AND LOCAL TAX CONSEQUENCES,
IF ANY, OF THE PROPOSED TRANSACTION.
 
DISSENTERS' RIGHTS
 
    Pursuant to  Sections  302A.471  and  302A.473  of  the  Minnesota  Business
Corporation  Act (the "MBCA Sections"), record  holders of shares of the Company
are entitled to assert dissenters' rights in connection with the  Reorganization
and  obtain payment  of the  "fair value"  of their  shares, provided  that such
shareholders comply with the requirements of the MBCA Sections.  NOTWITHSTANDING
THE  PROVISIONS OF THE  MBCA SECTIONS, THE DIVISION  OF INVESTMENT MANAGEMENT OF
THE COMMISSION  HAS  TAKEN  THE  POSITION  THAT  ADHERENCE  TO  STATE  APPRAISAL
PROCEDURES  BY  A REGISTERED  INVESTMENT  COMPANY ISSUING  REDEEMABLE SECURITIES
WOULD CONSTITUTE  A  VIOLATION OF  RULE  22C-1 UNDER  THE  1940 ACT.  THIS  RULE
PROVIDES THAT NO OPEN-END INVESTMENT COMPANY MAY REDEEM ITS SHARES OTHER THAN AT
NET  ASSET VALUE NEXT  COMPUTED AFTER RECEIPT  OF A TENDER  OF SUCH SECURITY FOR
REDEMPTION. IT IS THE  VIEW OF THE DIVISION  OF INVESTMENT MANAGEMENT THAT  RULE
22C-1 PREEMPTS APPRAISAL PROVISIONS IN STATE STATUTES.
 
    In  the interests of ensuring equal valuation  of all interests in the Fund,
the Company will determine dissenters' rights in accordance with the  Division's
interpretation.  It should be  emphasized that Fund  shareholders may sell their
shares at net asset value (subject to any applicable CDSC) at any time prior  to
the Closing Date.
 
DESCRIPTION OF SHARES
 
    Shares  of Growth and  Income Fund to  be issued pursuant  to the Plan will,
when issued, be  fully paid  and non-assessable by  Growth and  Income Fund  and
transferable  without  restrictions and  will have  no preemptive  or conversion
rights.
 
CAPITALIZATION TABLE (UNAUDITED)
 
    The following table sets forth the capitalization of Growth and Income  Fund
and  the Fund as of September  30, 1995 and on a  pro forma combined basis as if
the Reorganization had occurred on that date:
 
<TABLE>
<CAPTION>
                                                           SHARES
                                           NET ASSETS    OUTSTANDING   NET ASSET
                                             (000S          (000S      VALUE PER
                                            OMITTED)      OMITTED)       SHARE
                                          ------------   -----------   ---------
<S>                                       <C>            <C>           <C>
Fund....................................  $    11,599         1,089     $10.65
Growth and Income Fund..................  $    73,431         5,678     $12.93
Pro Forma Combined......................  $    85,030         6,575     $12.93
</TABLE>
 
         COMPARISON OF INVESTMENT OBJECTIVES, POLICIES AND RESTRICTIONS
 
INVESTMENT OBJECTIVES AND POLICIES
 
    The Fund and Growth and Income Fund have similar investment objectives.  The
Fund's  objectives are  long-term capital  appreciation and  current income. The
investment objectives of Growth and Income Fund are current income and long-term
growth of capital and income. The  investment objectives of the Fund and  Growth
and  Income  Fund are  fundamental and  may not  be changed  without shareholder
approval.
 
    The Fund  seeks to  achieve its  investment objectives  by investing,  under
normal  circumstances, at least  65% of its  total assets in  U.S., Canadian and
Mexican securities, which are defined in its current
 
                                       14
<PAGE>
prospectus as securities issued by (a)  companies organized in the U.S.,  Canada
or  Mexico  or  for  which  the principal  trading  market  is  located  in such
countries, (b) companies that derive at  least 50% of their gross revenues  from
either  goods produced,  sales made, services  performed or  investments made in
such countries, (c)  companies which  have at least  50% of  their total  assets
located in the U.S., Canada or Mexico or (d) or guaranteed by the governments of
such countries or their agencies, political subdivisions or instrumentalities or
the  central bank of such country (sovereign debt). The Fund does not invest 25%
or more  of its  total assets  in  government obligations  issued by  Canada  or
Mexico.  Growth and  Income Fund seeks  to achieve its  investment objectives by
investing in a broadly diversified portfolio of securities, with an emphasis  on
securities  of  large, established  companies that  have  a history  of dividend
payments and that the investment adviser believes are undervalued. The principal
difference between the two funds is that Growth and Income Fund invests at least
95% of its assets in U.S. equity  and debt securities, whereas the Fund  invests
in U.S. securities and Canadian and Mexican securities.
 
    For  both funds, companies are selected on the basis of Piper Capital's (and
the sub-adviser's, in the case of the Fund's non-U.S. investments) assessment of
their prospects for long-term growth  in dividends and earnings in  relationship
to  the prevailing market price (I.E.,  investments that the adviser believes to
be undervalued). With  respect to  Growth and  Income Fund,  Piper Capital  also
considers  other factors,  including the  sensitivity of  a company's particular
industry to fluctuations in major economic variables, such as interest rates and
industrial  production.  With  respect  to  the  Fund,  emphasis  is  placed  on
investments  in companies which Piper Capital (and the sub-advisers, in the case
of non-U.S.  investments)  believes are  well  positioned to  benefit  from  the
cross-border  commerce among the  countries in North  America which is currently
taking place and is expected to  increase as a result of government  initiatives
to  promote  free cross-border  trade. In  addition, the  Fund is  authorized to
invest up to 35% of  its total assets in  securities of issuers located  outside
North  America that are believed  by Piper Capital (and  the sub-advisers) to be
well positioned to  benefit from cross-border  trade with the  U.S., Canada  and
Mexico.
 
    The  Fund may invest without limitation  in equity and investment grade debt
securities. Growth and Income Fund may also invest without limitation in  equity
and  investment  grade debt  securities but  under normal  circumstances invests
primarily in common stock and securities convertible into common stock.
 
    The Fund may invest  part or all  of its assets in  U.S. dollar- or  foreign
currency-denominated  cash  or  domestic or  foreign  high-quality  money market
instruments to maintain a temporary "defensive" posture, when, in the opinion of
the investment adviser, it is advisable  to do so because of market  conditions.
For  temporary defensive  purposes, Growth  and Income  Fund may  retain cash or
invest all or part of its assets in short-term money market securities including
U.S. Government  obligations, time  deposits,  bank CDs,  bankers'  acceptances,
high-grade commercial paper, and other money market instruments.
 
    The  Fund may purchase and sell put  and call options, futures contracts and
options on futures contracts  with respect to  financial instruments, stock  and
interest rate indexes and foreign currencies. Futures and options may be used to
facilitate  allocation of the Fund's investment among asset classes, to generate
income or to hedge against declines in securities prices or increases in  prices
of  securities proposed to be purchased. Growth and Income Fund may, for hedging
purposes only,  buy put  and call  options on  the securities  in which  it  may
invest, buy exchange-traded stock index options and enter into interest rate and
stock  index futures  contracts, and  options thereon.  In addition,  Growth and
Income Fund  may  sell covered  options  and  stock index  options  for  hedging
purposes  or to generate income.  The Fund may buy  or sell options, futures and
options  on  futures  that   are  traded  on  U.S.   or  foreign  exchanges   or
over-the-counter;  however, Growth  and Income Fund  may purchase  and sell only
exchange-traded options, futures and options  on futures. In addition, the  Fund
may,  but  Growth  and  Income  Fund  may  not,  enter  into  currency  exchange
transactions (including forward foreign currency exchange contracts and  futures
and options contracts on foreign currencies) as a
 
                                       15
<PAGE>
hedge  against fluctuations in foreign exchange rates. To date, the Fund has not
engaged in options  on futures  contracts, options  on stock  and interest  rate
indexes or currency exchange transactions other than forward contracts.
 
    Both  the  Fund and  Growth and  Income  Fund may  purchase securities  on a
when-issued or delayed  delivery basis,  may purchase  or sell  securities on  a
forward  commitment basis. Growth and  Income Fund may, while  the Fund may not,
purchase securities on a "when, as and if issued" basis. While Growth and Income
Fund may not  currently invest in  warrants at  all. Both funds  may enter  into
repurchase  agreements subject to certain  procedures designed to minimize risks
associated with such agreements. The  Fund may also (i) invest  up to 5% of  its
net assets in warrants; (ii) invest in American Depository Receipts ("ADRs") and
similar  instruments; and (iii) invest in  other investment companies (up to the
limits prescribed by the 1940  Act); Growth and Income  Fund does not invest  in
these types of instruments. Growth and Income Fund may lend portfolio securities
up  to one-third of the value of its  total assets; the Fund does not enter into
these types of transactions.
 
    In addition, the  Fund is  a non-diversified investment  company within  the
meaning  of  the 1940  Act,  whereas Growth  and  Income Fund  is  a diversified
investment company. A  non-diversified investment company  may invest a  greater
portion  of its assets in  the securities of a  single issuer than a diversified
investment company.  To  the extent  that  a  relatively high  percentage  of  a
non-diversified  fund's assets  may be invested  in the securities  of a limited
number of issuers,  such fund may  be more susceptible  to any single  economic,
political   or  regulatory  occurrence  than   the  portfolio  securities  of  a
diversified investment company.
 
    The investment policies  of both  the Fund and  Growth and  Income Fund  are
non-fundamental  and  may be  changed by  their  respective Boards  of Directors
unless otherwise noted  herein. The  foregoing discussion  is a  summary of  the
principal  differences and similarities  between the investment  policies of the
funds. For a more  complete discussion of each  fund's policies see  "Investment
Objectives  and Policies" in  each fund's respective  Prospectus and "Investment
Objectives and Policies" in the  Fund's Statement of Additional Information  and
"Investment  Objectives, Policies and Restrictions"  in Growth and Income Fund's
Statement of Additional Information.
 
INVESTMENT RESTRICTIONS
 
    Complete descriptions  of  the fundamental  and  non-fundamental  investment
restrictions  adopted by the  Fund and Growth  and Income Fund  appear under the
caption "Investment Restrictions" in the Prospectus and Statement of  Additional
Information   of  the  Fund  and   "Special  Investment  Methods  --  Investment
Restrictions" in Growth and Income Fund's Prospectus and "Investment Objectives,
Policies and Restrictions" in Growth  and Income Fund's Statement of  Additional
Information.  A fundamental investment restriction cannot be changed without the
vote of a majority  of the fund's outstanding  voting securities, as defined  in
the  1940 Act. The  material differences between  the investment restrictions of
the two funds are as follows: First, as a diversified investment company, Growth
and Income Fund may not, as a matter of fundamental policy, with respect to  75%
of its total assets, invest more than 5% of the value of its total assets in the
securities  of any  one issuer or  own more  than 10% of  the outstanding voting
securities of any one issuer (other than obligations issued or guaranteed by the
U.S. Government, its agencies  or instrumentalities). The Fund  is subject to  a
similar non-fundamental limitation only with respect to 50% of its assets.
 
    Second, neither fund may invest for purposes of exercising control, however,
for  Growth and Income  Fund this is a  non-fundamental restriction. Third, only
Growth and  Income Fund  is  subject to  a non-fundamental  restriction  against
investments  in  other  investment  companies  (except  as  part  of  a  merger,
consolidation or acquisition of  assets). Fourth, as  mentioned above, the  Fund
may purchase warrants with up to 5% of its net assets, whereas Growth and Income
Fund  is  subject  to a  non-fundamental  restriction against  investing  in any
warrants. Fifth, according  to each  fund's fundamental  restrictions, the  Fund
may,  but  Growth  and  Income  Fund  may  not,  enter  into  reverse repurchase
agreements for  leverage  purposes.  Sixth,  also as  a  matter  of  fundamental
restriction, the Fund may,
 
                                       16
<PAGE>
but  Growth and Income Fund  may not, invest in  readily marketable interests in
real estate investment trusts. Seventh, neither fund may invest more than 15% of
the value of  its net assets  in illiquid securities,  however, with respect  to
Growth  and Income Fund  this is a  non-fundamental restriction. Finally, Growth
and Income Fund may, but the Fund, pursuant to its fundamental restrictions, may
not, make  loans  of money  or  property except  through  the purchase  of  debt
obligations. Any non-public loans made by Growth and Income Fund generally would
be subject to its limitation on investments in illiquid securities.
 
INTERESTS OF CERTAIN PERSONS
 
    The  following persons affiliated  with the Fund and  Growth and Income Fund
receive payments from the Fund and Growth and Income Fund for services  rendered
pursuant  to contractual arrangements with both funds: (i) Piper Capital, as the
investment adviser and manager  to each fund, and  (ii) the Distributor, as  the
distributor  of shares  of each  fund. In addition,  with respect  to Growth and
Income Fund only,  Piper Trust Company,  an affiliate of  Piper Capital and  the
Distributor,  and the  Distributor provide  certain transfer  agent and dividend
disbursing agent services for certain shareholder accounts.
 
                     ADDITIONAL INFORMATION ABOUT THE FUND
                           AND GROWTH AND INCOME FUND
 
GENERAL
 
    For a  discussion  of  the  organization and  operation  of  the  Fund,  see
"Management",  "Investment Objectives  and Policies",  "Investment Restrictions"
and  "General  Information"  in  its   prospectus.  For  a  discussion  of   the
organization  and  operation  of  Growth and  Income  Fund,  see "Introduction",
"Management", "Investment Objectives and Policies" and "General Information"  in
its prospectus.
 
FINANCIAL INFORMATION
 
    For certain financial information about Growth and Income Fund and the Fund,
see  "Financial Highlights"  and "Performance  Comparisons" in  their respective
prospectuses.
 
MANAGEMENT
 
    For information  about Growth  and Income  Fund's and  the Fund's  Board  of
Directors,   investment   manager   and   distributor,   see   "Management"  and
"Distribution of Fund Shares" in their respective prospectuses.
 
DESCRIPTION OF SECURITIES AND SHAREHOLDER INQUIRIES
 
    For a description of the nature and most significant attributes of shares of
the Fund  and Growth  and  Income Fund,  and information  regarding  shareholder
inquiries, see "General Information" and "Introduction -- Shareholder Inquiries"
in their respective prospectuses.
 
DIVIDENDS, DISTRIBUTIONS AND TAXES
 
    For  a  discussion  of  the  Fund's  policies  with  respect  to  dividends,
distributions and taxes, see  "Dividends, Distributions and  Tax Status" in  its
prospectus.  For a discussion of Growth  and Income Fund's policies with respect
to dividends, distributions,  and taxes, see  "Dividends and Distributions"  and
"Tax Status" in its prospectus.
 
PURCHASES AND REDEMPTIONS
 
    For a discussion of how the Fund's shares may be purchased and redeemed, see
"Purchase  of  Shares"  and "Redemption  of  Shares"  in its  prospectus.  For a
discussion of how Growth and Income Fund's shares may be purchased and redeemed,
see "Shareholder Guide to Investing" in its prospectus.
 
PENDING LEGAL PROCEEDINGS
 
    For a discussion of  pending legal proceedings  see "Pending Litigation"  in
the  Fund's prospectus and "General Information -- Pending Legal Proceedings" in
Growth and Income Fund's prospectus.
 
                                       17
<PAGE>
                  MANAGEMENT'S DISCUSSION OF FUND PERFORMANCE
 
    For management's discussion of  Growth and Income  Fund's performance as  of
its  fiscal year ended  September 30, 1995,  see Piper's Annual  Report for such
fiscal year accompanying this Proxy Statement/Prospectus and incorporated herein
by reference. For  management's discussion  of the Fund's  performance, see  the
Company's  Annual  Report for  its fiscal  year  ended June  30, 1995,  which is
incorporated herein  by  reference. The  Company's  Annual Report  is  available
without charge, as noted under "Available Information" below.
 
                        FINANCIAL STATEMENTS AND EXPERTS
 
    The  annual  financial statements  of Growth  and Income  Fund and  the Fund
incorporated by reference in the Additional Statement have been audited by  KPMG
Peat  Marwick LLP,  independent accountants,  for the  periods indicated  in its
respective reports thereon. Such financial statements have been incorporated  by
reference  in reliance upon such  reports given upon the  authority of KPMG Peat
Marwick LLP as experts in accounting and auditing.
 
                                 LEGAL MATTERS
 
    Certain legal matters concerning the issuance of shares of Growth and Income
Fund will be passed upon by Dorsey & Whitney LLP, Minneapolis, Minnesota.
 
                             AVAILABLE INFORMATION
 
    ADDITIONAL INFORMATION  ABOUT  THE  FUND  AND  GROWTH  AND  INCOME  FUND  IS
AVAILABLE,  AS  APPLICABLE, IN  THE FOLLOWING  DOCUMENTS WHICH  ARE INCORPORATED
HEREIN BY REFERENCE: (I) GROWTH AND INCOME FUND'S PROSPECTUS DATED NOVEMBER  27,
1995, ATTACHED TO THIS PROXY STATEMENT/PROSPECTUS, WHICH PROSPECTUS FORMS A PART
OF  POST-EFFECTIVE AMENDMENT  NO. 27 TO  PIPER'S REGISTRATION  STATEMENT ON FORM
N-1A (FILE NOS. 33-10261; 811-4905); (II) GROWTH AND INCOME FUND'S STATEMENT  OF
ADDITIONAL  INFORMATION DATED  NOVEMBER 27,  1995; (III)  THE ANNUAL  REPORT FOR
PIPER --  TOTAL RETURN  FUNDS FOR  GROWTH AND  INCOME FUND'S  FISCAL YEAR  ENDED
SEPTEMBER  30,  1995  ACCOMPANYING  THIS  PROXY  STATEMENT/PROSPECTUS;  (IV) THE
COMPANY'S PROSPECTUS DATED  AUGUST 29, 1995,  WHICH PROSPECTUS FORMS  A PART  OF
POST-EFFECTIVE  AMENDMENT NO. 6 TO THE  COMPANY'S REGISTRATION STATEMENT ON FORM
N-1A (FILE NOS. 33-67016; 811-7936);  (V) THE COMPANY'S STATEMENT OF  ADDITIONAL
INFORMATION  DATED AUGUST  29, 1995;  (VI) THE  COMPANY'S ANNUAL  REPORT FOR THE
FISCAL YEAR ENDED JUNE 30, 1995; AND (VII) THE COMPANY'S SEMI-ANNUAL REPORT  FOR
THE  SIX MONTHS ENDED DECEMBER 31, 1995. THE FOREGOING DOCUMENTS MAY BE OBTAINED
WITHOUT CHARGE UPON REQUEST FROM SHAREHOLDER SERVICES, PIPER JAFFRAY TOWER,  222
SOUTH NINTH STREET, 55402-3804, (800) 866-7778.
 
    The  Company and Piper are subject  to the informational requirements of the
Securities Exchange Act of 1934, as  amended, and in accordance therewith,  file
reports  and other information with the  Commission. Proxy material, reports and
other information about the Fund and Growth and Income Fund which are of  public
record  can be inspected and copied at public reference facilities maintained by
the  Commission  at  Room  1204,  Judiciary  Plaza,  450  Fifth  Street,   N.W.,
Washington,  D.C. 20549 and certain of its  regional offices, and copies of such
materials can be obtained at prescribed rates from the Public Reference  Branch,
Office  of Consumer  Affairs and  Information Services,  Securities and Exchange
Commission, Washington, D.C. 20549.
 
                                 OTHER BUSINESS
 
    Management of  the Company  knows  of no  business  other than  the  matters
specified  above which will be presented at the Meeting. Since matters not known
at the  time of  the solicitation  may come  before the  Meeting, the  proxy  as
solicited   confers  discretionary  authority  with   respect  to  such  matters
 
                                       18
<PAGE>
as properly come before the  Meeting, including any adjournment or  adjournments
thereof,  and it is the  intention of the persons  named as attorneys-in-fact in
the proxy to vote this proxy in accordance with their judgment on such matters.
 
                                          By Order of the Board of Directors,
 
                                          SUSAN SHARP MILEY
                                          SECRETARY
 
May 17, 1996
 
                                       19
<PAGE>
                                                                       EXHIBIT A
 
                      AGREEMENT AND PLAN OF REORGANIZATION
HERCULES NORTH AMERICAN GROWTH AND INCOME FUND AND PIPER GROWTH AND INCOME FUND
 
    THIS  AGREEMENT AND PLAN OF REORGANIZATION  ("Agreement") is made as of this
15th day  of  April,  1996,  by  and  between  Hercules  Funds  Inc.  ("Hercules
Company"),  on behalf  of its series  Hercules North American  Growth and Income
Fund ("Hercules Fund"), and Piper Funds Inc. ("Piper Company"), on behalf of its
series Growth and Income Fund ("Piper Fund"). Hercules Company and Piper Company
are Minnesota corporations. As  used in this Agreement,  the terms "Piper  Fund"
and  "Hercules Fund" shall be construed to mean, respectively, 'Piper Company on
behalf of Piper Fund' and 'Hercules  Company on behalf of Hercules Fund',  where
necessary  to reflect the  fact that a corporate  series is generally considered
the beneficiary of corporate level actions taken with respect to the series  and
is not itself recognized as a person under law.
 
    This   Agreement  is  intended  to   be  and  is  adopted   as  a  "plan  of
reorganization"  within  the   meaning  of   Treas.  Reg.   1.368-2(g),  for   a
reorganization  under Section 368(a)(1) of the Internal Revenue Code of 1986, as
amended (the "Code"). The reorganization ("Reorganization") will consist of  the
transfer  to Piper Fund of  substantially all of the  assets of Hercules Fund in
exchange for the assumption by Piper Fund of all stated liabilities of  Hercules
Fund  and the issuance by Piper Fund of  shares of common stock, par value $0.01
per share  ("Piper Fund  Shares"), to  be distributed,  after the  Closing  Date
hereinafter  determined, to the shareholders of  Hercules Fund in liquidation of
Hercules Fund as provided herein, all upon the terms and conditions  hereinafter
set  forth in this Agreement. The distribution  of Piper Fund Shares to Hercules
Fund shareholders and the  retirement and cancellation  of Hercules Fund  shares
will  be effected pursuant to  an amendment to the  Articles of Incorporation of
Hercules Company in the form attached hereto as Exhibit 1 (the "Amendment"),  to
be  adopted  by  Hercules  Company in  accordance  with  the  Minnesota Business
Corporation Act.
 
    In consideration  of  the  premises  and of  the  covenants  and  agreements
hereinafter set forth, the parties hereto covenant and agree as follows:
 
1.  THE REORGANIZATION AND LIQUIDATION OF HERCULES FUND
 
    1.1.    Subject to  the terms  and conditions  set forth  herein and  in the
Amendment and  on the  basis  of the  representations and  warranties  contained
herein,  Hercules  Fund agrees  to assign,  deliver  and otherwise  transfer the
Hercules Fund Assets (as  defined in paragraph 1.2(a))  to Piper Fund and  Piper
Fund  agrees in exchange  therefor to assume all  stated liabilities of Hercules
Fund on the Closing Date (as defined in paragraph 3.1) as set forth in paragraph
1.3 and to deliver to Hercules  Fund Shareholders (as defined in paragraph  1.5)
the  number  of  Piper  Fund Shares,  including  fractional  Piper  Fund Shares,
determined in accordance with paragraph 2.2. Such transactions shall take  place
at the closing provided for in paragraph 3.1 ("Closing").
 
    1.2.(a)  The "Hercules Fund Assets" shall consist of all property including,
    without limitation,  all cash,  cash equivalents,  securities,  commodities,
    futures,  and dividend and interest receivables  owned by Hercules Fund, and
    any deferred or prepaid expenses shown as an asset on Hercules Fund's books,
    on the Valuation Date (as defined in paragraph 2.1).
 
        (b) Hercules Fund reserves  the right to sell  any of the securities  in
    its  portfolio but will not, from the  date on which the Proxy Materials (as
    defined in paragraph 4.3) are mailed to Hercules Fund shareholders,  acquire
    without the prior approval of Piper Fund, any additional securities or other
    instruments  other than securities or instruments of the type in which Piper
    Fund is permitted to invest and in  amounts agreed to by Piper Fund. In  the
    event  that Hercules Fund holds any assets  that Piper Fund is not permitted
    to hold,  Hercules Fund  will dispose  of such  assets on  or prior  to  the
    Valuation  Date. In  addition, if  it is  determined that  the portfolios of
    Hercules Fund and  Piper Fund,  when aggregated,  would contain  investments
    exceeding  certain  percentage  limitations  imposed  upon  Piper  Fund with
    respect to such investments (including,
 
                                      A-1
<PAGE>
    among   others,   percentage   limitations   necessary   to   satisfy    the
    diversification  requirements of  the Code),  Hercules Fund  if requested by
    Piper Fund  will, on  or prior  to  the Valuation  Date, dispose  of  and/or
    reinvest  a sufficient  amount of  such investments  as may  be necessary to
    avoid violating such limitations as of the Closing Date.
 
    1.3.  Hercules Fund  will endeavor to discharge  all of its liabilities  and
obligations on or prior to the Valuation Date. Piper Fund will assume all stated
liabilities, which include, without limitation, all expenses, costs, charges and
reserves  reflected  on  an unaudited  Statement  of Assets  and  Liabilities of
Hercules Fund prepared  by the Treasurer  of Hercules Fund  as of the  Valuation
Date  in accordance  with generally accepted  accounting principles consistently
applied from the prior audited period ("Valuation Date Statement").
 
    1.4.  In order  for Hercules Fund  to comply with  Section 852(a)(1) of  the
Code  and to avoid having  any investment company taxable  income or net capital
gain (as defined in Sections 852(b)(2)  and 1222(11) of the Code,  respectively)
in the taxable year ending with its dissolution, Hercules Fund will on or before
the  Valuation Date (a) declare a dividend in  an amount large enough so that it
will have declared dividends of all of its investment company taxable income and
net capital gain, if  any, for such taxable  year (determined without regard  to
any deduction for dividends paid) and (b) distribute such dividend.
 
    1.5.   On the Closing Date or as soon as practicable thereafter, pursuant to
paragraph 1.1 hereof and the Amendment, Hercules Fund will distribute Piper Fund
Shares received  by  Hercules  Fund  pro rata  to  its  shareholders  of  record
determined  as of the  close of business  on the Valuation  Date ("Hercules Fund
Shareholders"). Thereafter, no additional  shares representing interests in  the
Hercules  Fund shall  be issued.  Such distribution  will be  accomplished by an
instruction, signed by Hercules Fund's Secretary, to transfer Piper Fund  Shares
then  credited to  Hercules Fund's account  on the  books of Piper  Fund to open
accounts on  the  books  of  Piper  Fund in  the  names  of  the  Hercules  Fund
Shareholders  and  representing the  respective pro  rata  number of  Piper Fund
Shares due  each such  Hercules  Fund Shareholder.  All issued  and  outstanding
shares  of  Hercules Fund  simultaneously will  be  canceled on  Hercules Fund's
books. No  Hercules Fund  Shareholder will  be charged  any contingent  deferred
sales  charge described in Hercules Fund's current or then-current prospectus as
a result of  the conversion  of Hercules Fund  holdings into  Piper Fund  Shares
described in this paragraph.
 
    1.6.   Ownership of  Piper Fund Shares will  be shown on  the books of Piper
Fund's transfer agent. Piper Fund Shares will be issued in the manner  described
in Piper Fund's then current Prospectus and Statement of Additional Information,
except no front-end sales charges will be incurred by Hercules Fund Shareholders
in connection with Piper Fund Shares received in the Reorganization.
 
    1.7.   Any transfer  taxes payable upon  issuance of Piper  Fund Shares in a
name other than the registered holder of Hercules Fund Shares on Hercules Fund's
books as of the close of business on the Valuation Date shall, as a condition of
such issuance and transfer, be paid by the person to whom Piper Fund Shares  are
to be issued and transferred.
 
    1.8.   Any reporting responsibility of Hercules Fund is and shall remain the
responsibility of Hercules Fund up to  and including the date on which  Hercules
Fund is dissolved and deregistered pursuant to paragraph 1.9.
 
    1.9   Hercules  Company shall  be dissolved  as a  Minnesota corporation and
deregistered as an investment company under the Investment Company Act of  1940,
as  amended ("1940  Act"), promptly  following the  making of  all distributions
pursuant to paragraph 1.5 and the  reorganization or liquidation of each of  its
series, such that no shares of Hercules Company remain issued and outstanding.
 
    1.10   All books and  records maintained on behalf  of Hercules Fund will be
delivered to Piper Fund and, after the Closing, will be maintained by Piper Fund
or its  designee in  compliance with  applicable record  retention  requirements
under the 1940 Act.
 
                                      A-2
<PAGE>
2.  VALUATION
 
    2.1.   The "Valuation Date"  shall be a business day  not later than the 5th
business day following the receipt of  the requisite approval of this  Agreement
by  shareholders  of Hercules  Fund or  such other  date after  such shareholder
approval as may be mutually agreed upon.  The value of the Hercules Fund  Assets
shall be the value of such assets computed as of 4:00 p.m., Eastern time, on the
Valuation  Date, using the  valuation procedures set forth  in Piper Fund's then
current Prospectus and Statement of Additional Information.
 
    2.2.  The net asset value of a Piper Fund Share shall be the net asset value
per share computed  on the Valuation  Date, using the  valuation procedures  set
forth  in  Piper  Fund's then  current  Prospectus and  Statement  of Additional
Information.
 
    2.3.  The number of Piper Fund Shares (including fractional shares, if  any)
to be issued hereunder shall be determined by dividing the value of the Hercules
Fund  Assets, net  of the  liabilities of  Hercules Fund  assumed by  Piper Fund
pursuant to paragraph 1.1, determined in  accordance with paragraph 2.1, by  the
net  asset value of a  Piper Fund Share determined  in accordance with paragraph
2.2.
 
    2.4.  All computations  of value shall be  made by Piper Capital  Management
Incorporated  ("PCM") in accordance  with its regular  practice in pricing Piper
Fund. Piper Fund shall cause  PCM to deliver a copy  of its valuation report  at
the Closing.
 
3.  CLOSING AND CLOSING DATE
 
    3.1.   The Closing shall  take place on the Valuation  Date as of 5:00 p.m.,
Eastern time,  or at  such other  day  or time  as the  parties may  agree  (the
"Closing  Date"). The Closing shall be held  in a location mutually agreeable to
the parties hereto. All acts taking place at the Closing shall be deemed to take
place simultaneously as of 5:00 p.m.,  Eastern time, on the Closing Date  unless
otherwise provided.
 
    3.2.   Portfolio securities held by Hercules Fund (together with any cash or
other assets) shall be delivered by  Hercules Fund to Investors Fiduciary  Trust
Company (the "Custodian"), as custodian for Piper Fund, for the account of Piper
Fund  on  or  before the  Closing  Date  in conformity  with  applicable custody
provisions under the 1940 Act and duly  endorsed in proper form for transfer  in
such  condition as  to constitute good  delivery thereof in  accordance with the
custom of  brokers.  The  portfolio  securities  shall  be  accompanied  by  all
necessary federal and state stock transfer stamps or a check for the appropriate
purchase  price of such  stamps. Portfolio securities  and instruments deposited
with a securities depository (as defined in Rule 17f-4 under the 1940 Act) shall
be delivered on  or before  the Closing Date  by book-entry  in accordance  with
customary  practices of  such depository and  the Custodian.  The cash delivered
shall be in the form of a Federal Funds wire, payable to the order of "Investors
Fiduciary Trust Company, Custodian for Piper Growth and Income Fund, a series of
Piper Funds, Inc."
 
    3.3.   In the  event that  on the  Valuation Date,  (a) the  New York  Stock
Exchange  shall be closed to  trading or trading thereon  shall be restricted or
(b) trading or the reporting of trading  on such Exchange or elsewhere shall  be
disrupted  so  that, in  the  judgment of  both  Piper Fund  and  Hercules Fund,
accurate appraisal of the value of the net assets of Piper Fund or the  Hercules
Fund  Assets is impracticable,  the Valuation Date shall  be postponed until the
first business day  after the  day when trading  shall have  been fully  resumed
without restriction or disruption and reporting shall have been restored.
 
    3.4.   At the Closing,  each party shall deliver to  the other such bills of
sale, checks,  assignments,  share  certificates,  if  any,  receipts  or  other
documents as such other party or its counsel may reasonably request.
 
                                      A-3
<PAGE>
4.  COVENANTS OF PIPER FUND AND HERCULES FUND
 
    4.1.  Except as otherwise expressly provided herein with respect to Hercules
Fund,  Piper  Fund and  Hercules  Fund each  will  operate its  business  in the
ordinary course  between  the  date  hereof  and  the  Closing  Date,  it  being
understood  that  such  ordinary  course  of  business  will  include  customary
dividends and other distributions.
 
    4.2.  Piper Company will prepare  and file with the Securities and  Exchange
Commission  ("Commission")  a  registration  statement on  Form  N-14  under the
Securities Act of 1933, as amended  ("1933 Act"), relating to Piper Fund  Shares
("Registration Statement"). Hercules Company will provide Piper Company with the
Proxy  Materials  as described  in  paragraph 4.3  below,  for inclusion  in the
Registration Statement. Hercules Company will further provide Piper Company with
such other information and documents relating to Hercules Fund as are reasonably
necessary for the preparation of the Registration Statement.
 
    4.3.  Hercules Fund will call a meeting of its shareholders to consider  and
act upon this Agreement and the Amendment and to take all other action necessary
to  obtain  approval  of  the transactions  contemplated  herein,  including, if
necessary,  the  waiver  of  any  existing  investment  limitations  that  might
otherwise  preclude Hercules Fund from  holding all of its  assets as Piper Fund
Shares until such shares are distributed to Hercules Fund shareholders. Hercules
Company will prepare the  notice of meeting, form  of proxy and proxy  statement
(collectively,  "Proxy Materials") to  be used in  connection with such meeting.
Piper  Company  will  furnish  Hercules  Company  with  a  currently   effective
prospectus  relating to Piper  Fund Shares for inclusion  in the Proxy Materials
and with  such  other  information  relating to  Piper  Fund  as  is  reasonably
necessary for the preparation of the Proxy Materials.
 
    4.4.   Subject to the provisions of  this Agreement, Piper Fund and Hercules
Fund will each take,  or cause to be  taken, all action, and  do or cause to  be
done,  all things  reasonably necessary, proper  or advisable  to consummate and
make effective the transactions contemplated by this Agreement.
 
    4.5.  As soon after the Closing Date as is reasonably practicable,  Hercules
Company (a) shall prepare and file all federal and other tax returns and reports
of  Hercules Fund required by law to be filed with respect to all periods ending
on or before the Closing  Date but not theretofore filed  and (b) shall pay  all
federal  and other taxes shown as due thereon and/or all federal and other taxes
that were unpaid as of the Closing Date, including without limitation, all taxes
for which  the  provision for  payment  was made  as  of the  Closing  Date  (as
represented in paragraph 5.2(k)).
 
    4.6.    Piper  Fund agrees  to  use  all reasonable  efforts  to  obtain the
approvals and authorizations required by the 1933 Act, the 1940 Act and such  of
the  state blue sky and  securities laws as it may  deem appropriate in order to
continue its operations after the Closing Date.
 
5.  REPRESENTATIONS AND WARRANTIES
 
    5.1.  Piper Company represents and warrants to Hercules Company as follows:
 
        (a) Piper  Fund  is  a series  of  Piper  Company. Piper  Company  is  a
    corporation  validly  existing  and  in  good  standing  under  the  laws of
    Minnesota with  corporate  power  to  carry on  its  business  as  presently
    conducted;
 
        (b)  Piper Company is a duly registered, open-end, management investment
    company, and its registration with  the Commission as an investment  company
    under the 1940 Act and the registration of its shares under the 1933 Act are
    in full force and effect;
 
        (c)  All of the issued  and outstanding shares of  common stock of Piper
    Fund have been offered and sold in compliance in all material respects  with
    applicable  registration requirements of  the 1933 Act  and state securities
    laws. Shares of Piper Fund are registered in all jurisdictions in which they
    are required to be  registered under state securities  laws and other  laws,
    and Piper Company is not subject to any stop order and is fully qualified to
    sell  Piper  Fund  shares in  each  state  in which  such  shares  have been
    registered;
 
                                      A-4
<PAGE>
        (d) The current  Prospectus and Statement  of Additional Information  of
    Piper  Fund conform in all material  respects to the applicable requirements
    of the 1933 Act and the 1940  Act and the regulations thereunder and do  not
    include  any  untrue statement  of  a material  fact  or omit  to  state any
    material fact  required  to be  stated  therein  or necessary  to  make  the
    statements  therein, in  light of  the circumstances  under which  they were
    made, not misleading;
 
        (e) Piper Fund is not in, and the execution, delivery and performance of
    this Agreement will not result in a, material violation of any provision  of
    Piper  Company's Articles of  Incorporation or By-Laws  or of any agreement,
    indenture, instrument, contract, lease or  other undertaking to which  Piper
    Fund is a party or by which it is bound;
 
        (f)  Other  than  as  disclosed  in  Piper  Fund's  currently  effective
    prospectus,  no  material   litigation  or   administrative  proceeding   or
    investigation  of  or before  any court  or  governmental body  is presently
    pending or, to its knowledge, threatened against Piper Company or Piper Fund
    or any of  its properties or  assets which, if  adversely determined,  would
    materially  and adversely affect  its financial condition  or the conduct of
    its business; and Piper Fund knows of no facts that might form the basis for
    the institution of such proceedings and is not a party to or subject to  the
    provisions  of any  order, decree or  judgment of any  court or governmental
    body which  materially and  adversely affects,  or is  reasonably likely  to
    materially  and adversely affect, its business  or its ability to consummate
    the transactions herein contemplated;
 
        (g) Piper  Fund's  Statement of  Assets  and Liabilities,  Statement  of
    Operations,  Statement of Changes in Net  Assets and Financial Highlights as
    of Piper Fund's most  recent fiscal year-end, and  for the year then  ended,
    certified  by KPMG Peat Marwick LLP (copies  of which have been furnished to
    Hercules Fund),  fairly present,  in all  materials respects,  Piper  Fund's
    financial  condition as of  such date in  accordance with generally accepted
    accounting principles, and  its results  of operations, changes  in its  net
    assets  and financial highlights for such period,  and as of such date there
    were no  known  liabilities of  Piper  Fund (contingent  or  otherwise)  not
    disclosed  therein  that  would  be required  in  accordance  with generally
    accepted accounting principles to be disclosed therein;
 
        (h) Since  the date  of the  most recent  audited financial  statements,
    there  has not  been any material  adverse change in  Piper Fund's financial
    condition, assets, liabilities or business, other than changes occurring  in
    the  ordinary  course  of  business,  or any  incurrence  by  Piper  Fund of
    indebtedness maturing more than one year from the date such indebtedness was
    incurred, except indebtedness incurred in  the ordinary course of  business.
    For  the purpose of this subparagraph (h), neither a decline in Piper Fund's
    net asset  value per  share  nor a  decrease in  Piper  Fund's size  due  to
    redemptions  by Piper Fund shareholders  shall constitute a material adverse
    change;
 
        (i) All issued and outstanding Piper Fund shares are, and at the Closing
    Date will  be, duly  and  validly issued  and  outstanding, fully  paid  and
    nonassessable with no personal liability attaching to the ownership thereof.
    Piper  Fund does not have outstanding  any options, warrants or other rights
    to subscribe for or purchase any of its shares, nor is there outstanding any
    security convertible to any of its shares;
 
        (j)  The execution, delivery and performance of this Agreement have been
    duly authorized by all  necessary action on the  part of Piper Company,  and
    this  Agreement constitutes  a valid  and binding  obligation of  Piper Fund
    enforceable in  accordance with  its terms,  subject as  to enforcement,  to
    bankruptcy,  insolvency, reorganization,  moratorium, fraudulent conveyance,
    and other laws  relating to  or affecting  creditors rights  and to  general
    equity  principles.  No  other  consents,  authorizations  or  approvals are
    necessary in connection  with Piper  Fund's performance  of this  Agreement,
    except  such as have been obtained under the  1933 Act, the 1934 Act and the
    1940 Act and such as may be required under state securities laws;
 
                                      A-5
<PAGE>
        (k) Piper Fund Shares to be  issued and delivered to Hercules Fund,  for
    the account of the Hercules Fund Shareholders, pursuant to the terms of this
    Agreement  will at the Closing  Date have been duly  authorized and, when so
    issued and delivered, will be duly and validly issued Piper Fund Shares, and
    will be fully paid and nonassessable with no personal liability attaching to
    the ownership thereof;
 
        (l) All material federal and other tax returns and reports of Piper Fund
    required by law to be  filed on or before the  Closing Date have been  filed
    and are correct, and all federal and other taxes shown as due or required to
    be  shown as due on said returns and reports have been paid or provision has
    been made  for  the  payment  thereof,  and to  the  best  of  Piper  Fund's
    knowledge,  no such  return is currently  under audit and  no assessment has
    been asserted with respect to  any such return and  there are no facts  that
    might form the basis for such proceedings;
 
        (m)  For each taxable year  since its inception, Piper  Fund has met the
    requirements of Subchapter M of the Code for qualification and treatment  as
    a  "regulated investment company" and neither  the execution or delivery of,
    nor the performance of its obligations under, this Agreement will  adversely
    affect,  and no  other events,  to the best  of Piper  Fund's knowledge, are
    reasonably likely to occur which will adversely affect, the ability of Piper
    Fund to continue to meet the requirements of Subchapter M of the Code;
 
        (n) Since Piper Fund's  most recent fiscal year-end,  there has been  no
    change  by  Piper  Fund  in accounting  methods,  principles,  or practices,
    including those required by generally accepted accounting principles;
 
        (o) The information furnished or to  be furnished by Piper Fund for  use
    in registration statements, proxy materials and other documents which may be
    necessary  in connection with the  transactions contemplated hereby shall be
    accurate and  complete in  all material  respects and  shall comply  in  all
    material  respects with  federal securities  and other  laws and regulations
    applicable thereto; and
 
        (p) The Proxy  Materials to  be included in  the Registration  Statement
    (only  insofar as they relate to Piper  Fund) will, on the effective date of
    the Registration Statement and on the  Closing Date, not contain any  untrue
    statement of a material fact or omit to state a material fact required to be
    stated  therein or necessary to make the statements therein, in light of the
    circumstances  under  which  such  statements  were  made,  not   materially
    misleading.
 
    5.2.  Hercules Company represents and warrants to Piper Company as follows:
 
        (a) Hercules Fund is a series of Hercules Company. Hercules Company is a
    corporation  validly  existing  and  in  good  standing  under  the  laws of
    Minnesota.
 
        (b)  Hercules  Company  is  a  duly  registered,  open-end,   management
    investment   company,  and  its  registration  with  the  Commission  as  an
    investment company under  the 1940 Act  and the registration  of its  shares
    under the 1933 Act are in full force and effect;
 
        (c) All of the issued and outstanding shares of common stock of Hercules
    Fund  have been offered and sold in compliance in all material respects with
    applicable registration requirements  of the 1933  Act and state  securities
    laws.  Shares of Hercules Fund are  registered in all jurisdictions in which
    they are required  to be registered  under state securities  laws and  other
    laws,  and Hercules Company  is not subject  to any stop  order and is fully
    qualified to sell Hercules  Fund shares in each  state in which such  shares
    have been registered;
 
        (d)  The current Prospectus  and Statement of  Additional Information of
    Hercules  Fund  conform   in  all  material   respects  to  the   applicable
    requirements of the 1933 Act and the 1940 Act and the regulations thereunder
    and  do not include any untrue statement of a material fact or omit to state
    any material fact  required to be  stated therein or  necessary to make  the
    statements  therein, in  light of  the circumstances  under which  they were
    made, not misleading;
 
                                      A-6
<PAGE>
        (e) Hercules Fund is not in, and the execution, delivery and performance
    of this Agreement will not result in a, material violation of any  provision
    of  Hercules  Company's  Articles  of Incorporation  or  By-Laws  or  of any
    agreement, indenture, instrument,  contract, lease or  other undertaking  to
    which Hercules Fund is a party or by which it is bound;
 
        (f)  Other  than as  disclosed  in Hercules  Fund's  currently effective
    prospectus,  no  material   litigation  or   administrative  proceeding   or
    investigation  of  or before  any court  or  governmental body  is presently
    pending or, to its knowledge, threatened against Hercules Fund or any of its
    properties or assets  which, if adversely  determined, would materially  and
    adversely affect its financial condition or the conduct of its business; and
    Hercules  Fund  knows  of  no  facts  that  might  form  the  basis  for the
    institution of such  proceedings and is  not a  party to or  subject to  the
    provisions  of any  order, decree or  judgment of any  court or governmental
    body which  materially and  adversely affects,  or is  reasonably likely  to
    materially  and adversely affect, its business  or its ability to consummate
    the transactions herein contemplated;
 
        (g) Hercules Fund's  Statement of Assets  and Liabilities, Statement  of
    Operations,  Statement of Changes in Net  Assets and Financial Highlights of
    Hercules Fund as of June 30, 1995 and for the year then ended, certified  by
    KPMG  Peat Marwick LLP  (copies of which  have been or  will be furnished to
    Piper Fund)  fairly  present,  in all  material  respects,  Hercules  Fund's
    financial  condition as of such date, and its results of operations, changes
    in its net  assets and financial  highlights for such  period in  accordance
    with  generally accepted  accounting principles, and  as of  such date there
    were no known  liabilities of  Hercules Fund (contingent  or otherwise)  not
    disclosed  therein  that  would  be required  in  accordance  with generally
    accepted accounting principles to be disclosed therein;
 
        (h) Since  the date  of the  most recent  audited financial  statements,
    there  has not been any material adverse change in Hercules Fund's financial
    condition, assets, liabilities or business, other than changes occurring  in
    the  ordinary  course of  business, or  any incurrence  by Hercules  Fund of
    indebtedness maturing more than one year from the date such indebtedness was
    incurred, except as otherwise  disclosed in writing  to and acknowledged  by
    Piper  Fund prior  to the date  of this  Agreement and prior  to the Closing
    Date. All  liabilities  of  Hercules Fund  (contingent  and  otherwise)  are
    reflected  in  the  Valuation  Date  Statement.  For  the  purpose  of  this
    subparagraph (h), neither a decline in  Hercules Fund's net asset value  per
    share  nor a decrease in Hercules Fund's size due to redemptions by Hercules
    Fund shareholders shall constitute a material adverse change;
 
        (i) Hercules Fund has no material contracts or other commitments  (other
    than  this Agreement) that will be terminated  with liability to it prior to
    the Closing Date;
 
        (j)  All issued and outstanding shares of Hercules Fund are, and at  the
    Closing  Date will be,  duly and validly issued  and outstanding, fully paid
    and nonassessable  with no  personal liability  attaching to  the  ownership
    thereof.  Hercules Fund does  not have outstanding  any options, warrants or
    other rights to subscribe for  or purchase any of  its shares, nor is  there
    outstanding  any security convertible to any  of its shares. All such shares
    will, at the  time of Closing,  be held by  the persons and  in the  amounts
    recorded by Hercules Fund's transfer agent;
 
        (k)  The execution, delivery and performance of this Agreement will have
    been duly authorized prior  to the Closing Date  by all necessary action  on
    the part of Hercules Company, and subject to the approval of Hercules Fund's
    shareholders,  this Agreement constitutes a  valid and binding obligation of
    Hercules Fund  enforceable  in accordance  with  its terms,  subject  as  to
    enforcement   to   bankruptcy,   insolvency,   reorganization,   moratorium,
    fraudulent conveyance, and  other laws  relating to  or affecting  creditors
    rights  and to general equity  principles. No other consents, authorizations
    or approvals are necessary in connection with Hercules Fund's performance of
    this Agreement, except such  as have been obtained  under the 1933 Act,  the
    1934 Act and the 1940 Act and such as may be required under state securities
    laws;
 
                                      A-7
<PAGE>
        (l)  All material federal and other  tax returns and reports of Hercules
    Fund required by law to  be filed on or before  the Closing Date shall  have
    been  filed and are correct and all federal  and other taxes shown as due or
    required to be shown as  due on said returns and  reports have been paid  or
    provision has been made for the payment thereof, and to the best of Hercules
    Fund's  knowledge, no such return is currently under audit and no assessment
    has been asserted with  respect to any  such return and  there are no  facts
    that might form the basis for such proceedings;
 
        (m) For each taxable year since its inception, Hercules Fund has met all
    the requirements of Subchapter M of the Code for qualification and treatment
    as  a "regulated investment  company" and neither  the execution or delivery
    of, nor  the  performance of  its  obligations under,  this  Agreement  will
    adversely  affect,  and no  other  events, to  the  best of  Hercules Fund's
    knowledge, are reasonably likely  to occur which  will adversely affect  the
    ability  of Hercules Fund to continue to meet the requirements of Subchapter
    M of the Code;
 
        (n) At the Closing Date, Hercules Fund will have good and valid title to
    the Hercules Fund Assets, subject to no liens (other than the obligation, if
    any, to pay the purchase price of portfolio securities purchased by Hercules
    Fund which have not settled prior  to the Closing Date), security  interests
    or  other  encumbrances,  and full  right,  power and  authority  to assign,
    deliver and otherwise transfer such assets hereunder, and upon delivery  and
    payment  for such assets, Piper Fund  will acquire good and marketable title
    thereto, subject to no restrictions on the full transfer thereof,  including
    any restrictions as might arise under the 1933 Act;
 
        (o)  On the effective date of the Registration Statement, at the time of
    the meeting of  Hercules Fund's shareholders  and on the  Closing Date,  the
    Proxy Materials will (i) comply in all material respects with the provisions
    of  the 1933  Act, the  Securities Exchange Act  of 1934,  as amended ("1934
    Act") and the 1940 Act and  the regulations thereunder and (ii) not  contain
    any  untrue statement of  a material fact  or omit to  state a material fact
    required to be stated  therein or necessary to  make the statements  therein
    not  misleading.  Neither  Hercules  Fund  nor  Hercules  Company  shall  be
    construed to have made the foregoing representation with respect to portions
    of the  Proxy  Materials furnished  by  Piper Fund.  Any  other  information
    furnished  by Hercules Fund for use in  the Registration Statement or in any
    other manner  that may  be  necessary in  connection with  the  transactions
    contemplated  hereby shall be accurate and  complete and shall comply in all
    material respects  with applicable  federal securities  and other  laws  and
    regulations thereunder;
 
        (p)  Hercules Fund has maintained or has  caused to be maintained on its
    behalf all books and accounts as required of a registered investment company
    in compliance with the requirements  of Section 31 of  the 1940 Act and  the
    Rules thereunder; and
 
        (q)  Hercules  Fund is  not  acquiring Piper  Fund  Shares to  be issued
    hereunder for the purpose of making  any distribution thereof other than  in
    accordance with the terms of this Agreement.
 
6.  CONDITIONS PRECEDENT TO OBLIGATIONS OF HERCULES FUND
 
    The obligations of Hercules Fund to consummate the transactions provided for
herein  shall be subject, at  its election, to the  performance by Piper Fund of
all the obligations to  be performed by  it hereunder on  or before the  Closing
Date and, in addition thereto, the following conditions:
 
    6.1.   All  representations and warranties  of Piper Fund  contained in this
Agreement shall be  true and correct  in all  material respects as  of the  date
hereof  and, except as they may be  affected by the transactions contemplated by
this Agreement, as of the Closing Date with the same force and effect as if made
on and as of the be Closing Date.
 
    6.2.  Piper Fund shall have delivered to Hercules Fund a certificate of  its
President  and Treasurer, in a form reasonably satisfactory to Hercules Fund and
dated as  of  the Closing  Date,  to the  effect  that the  representations  and
warranties  of Piper Company made in this  Agreement are true and correct at and
as of the a  Closing Date, except  as they may be  affected by the  transactions
contemplated by this Agreement, and as to such other matters as Hercules Company
shall reasonably request.
 
                                      A-8
<PAGE>
    6.3.  Hercules Company shall have received a favorable opinion from Dorsey &
Whitney  LLP, counsel to Piper Fund, dated as of the Closing Date, to the effect
that: (a) Piper Company is a validly existing Minnesota corporation and has  the
corporate  power to own all  of the properties and assets  of Piper Fund and, to
the knowledge of such counsel, to carry on its business as presently  conducted;
(b) Piper Company is a duly registered, open-end, management investment company,
and,  to the knowledge of such counsel,  its registration with the Commission as
an investment company under the 1940 Act  is in full force and effect; (c)  this
Agreement  has been duly  authorized, executed and delivered  by Piper Fund and,
assuming that the Registration  Statement complies with the  1933 Act, the  1934
Act  and the 1940 Act and regulations thereunder and assuming due authorization,
execution and  delivery of  this Agreement  by  Hercules Fund,  is a  valid  and
binding  obligation of Piper  Fund enforceable against  Piper Fund in accordance
with  its  terms,  subject  as   to  enforcement,  to  bankruptcy,   insolvency,
reorganization,  moratorium, fraudulent conveyance and other laws relating to or
affecting creditors  rights and  to general  equity principles;  (d) Piper  Fund
Shares  to be issued to Hercules Fund Shareholders as provided by this Agreement
are duly  authorized and,  assuming  receipt of  the  consideration to  be  paid
therefor,  upon such delivery  will be validly issued  and outstanding and fully
paid and nonassessable, and, to the knowledge of such counsel, no shareholder of
Piper Fund has  any preemptive  rights to  subscription or  purchase in  respect
thereof;  (e) the  execution and  delivery of  this Agreement  did not,  and the
consummation of the  transactions contemplated  hereby will  not, violate  Piper
Company's Articles of Incorporation or By-Laws; and (f) to the knowledge of such
counsel,   no  consent,  approval,  authorization  or  order  of  any  court  or
governmental authority of  the United States  or any state  is required for  the
consummation  by Piper Fund of the transactions contemplated herein, except such
as have been obtained under the 1933 Act, the 1934 Act and the 1940 Act and such
as may be required under state securities laws.
 
    6.4.  As of the  Closing Date, there shall have  been no material change  in
the  investment objective,  policies and restrictions,  nor any  increase in the
investment management fees or annual fees payable pursuant to Piper Fund's 12b-1
plan of distribution, from  those described in the  Prospectus and Statement  of
Additional Information of Piper Fund in effect on the date of this Agreement.
 
7.  CONDITIONS PRECEDENT TO OBLIGATIONS OF PIPER FUND
 
    The  obligations of  Piper Fund  to complete  the transactions  provided for
herein shall be subject, at its election, to the performance by Hercules Fund of
all the obligations to  be performed by  it hereunder on  or before the  Closing
Date and, in addition thereto, the following conditions:
 
    7.1.   All representations  and warranties of  Hercules Company contained in
this Agreement shall be true and correct in all material respects as of the date
hereof and, except as they may  be affected by the transactions contemplated  by
this Agreement, as of the Closing Date with the same force and effect as if made
on and as of the Closing Date.
 
    7.2.   Hercules  Fund shall have  delivered to  Piper Fund at  the Closing a
certificate  of  its  President  and  its  Treasurer,  in  form  and   substance
satisfactory  to Piper Fund and dated as of the Closing Date, to the effect that
the representations and warranties of Hercules  Fund made in this Agreement  are
true  and correct at and as of the  Closing Date, except as they may be affected
by the transactions contemplated by this Agreement, and as to such other matters
as Piper Fund shall reasonably request.
 
    7.3.   Hercules  Fund  shall  have delivered  to  Piper  Fund  a  statement,
certified  by the Treasurer of Hercules Company, of the Hercules Fund Assets and
its liabilities, together with  a list of  Hercules Fund's portfolio  securities
and  other  assets showing  the respective  adjusted  bases and  holding periods
thereof for income tax purposes, such statement to be prepared as of the Closing
Date  and   in  accordance   with  generally   accepted  accounting   principles
consistently applied.
 
    7.4.  Piper Fund shall have received at the Closing a favorable opinion from
Gordon Altman Butowsky Weitzen Shalov & Wein, counsel to Hercules Fund, dated as
of  the  Closing Date  to the  effect that:  (a) Hercules  Company is  a validly
existing Minnesota corporation  and has the  corporate power to  own all of  the
properties and assets of Hercules Fund and, to the knowledge of such counsel, to
carry  on its business  as presently conducted (Minnesota  counsel may be relied
upon in delivering such
 
                                      A-9
<PAGE>
opinion); (b)  Hercules  Company  is  a  duly  registered,  open-end  management
investment  company under the 1940  Act, and, to the  knowledge of such counsel,
its registration with the Commission as an investment company under the 1940 Act
is in  full force  and effect;  (c)  this Agreement  has been  duly  authorized,
executed  and delivered  by Hercules  Fund and,  assuming that  the Registration
Statement complies with  the 1933 Act,  the 1934 Act  and the 1940  Act and  the
regulations thereunder and assuming due authorization, execution and delivery of
this Agreement by Piper Fund, is a valid and binding obligation of Hercules Fund
enforceable  against Hercules Fund  in accordance with its  terms, subject as to
enforcement, to bankruptcy,  insolvency, reorganization, moratorium,  fraudulent
conveyance,  and other  laws relating  to or  affecting creditors  rights and to
general equity principles; (d) the execution and delivery of this Agreement  did
not,  and the  consummation of  the transactions  contemplated hereby  will not,
violate Hercules Company's Articles of Incorporation or By-Laws; and (e) to  the
knowledge  of such counsel, no consent,  approval, authorization or order of any
court or governmental authority  of the United States  or any state is  required
for  the consummation by Hercules Fund  of the transactions contemplated herein,
except such as have been obtained under the 1933 Act, the 1934 Act and the  1940
Act and such as may be required under state securities laws.
 
    7.5.   On the Closing Date, the Hercules Fund Assets shall include no assets
that Piper  Fund,  by  reason  of  Piper  Company's  Articles  of  Incorporation
limitations or otherwise, may not properly acquire.
 
8.  FURTHER CONDITIONS PRECEDENT TO OBLIGATIONS OF PIPER FUND AND
    HERCULES FUND
 
    The  obligations of Hercules Fund and  Piper Fund hereunder are each subject
to the further conditions that on or before the Closing Date:
 
    8.1.  This  Agreement and  the Amendment and  the transactions  contemplated
herein and therein shall have been approved by the requisite vote of the holders
of  the outstanding shares of Hercules Fund in accordance with the provisions of
Hercules Company's  Articles  of  Incorporation, and  certified  copies  of  the
resolutions evidencing such approval shall have been delivered to Piper Fund.
 
    8.2.   On  the Closing Date,  no action,  suit or other  proceeding shall be
pending before  any  court or  governmental  agency in  which  it is  sought  to
restrain or prohibit, or obtain damages or other relief in connection with, this
Agreement or the transactions contemplated herein.
 
    8.3.   All  consents of  other parties  and all  other consents,  orders and
permits of federal, state and  local regulatory authorities (including those  of
the  Commission  and of  state blue  sky  and securities  authorities, including
"no-action" positions  of  and exemptive  orders  from such  federal  and  state
authorities)  deemed  necessary  by  Piper  Fund  or  Hercules  Fund  to  permit
consummation, in all material respects, of the transactions contemplated  herein
shall have been obtained, except where failure to obtain any such consent, order
or  permit would not involve risk of a  material adverse effect on the assets or
properties of Piper Fund or Hercules Fund.
 
    8.4.  The Registration Statement shall have become effective under the  1933
Act,  no stop orders suspending the effectiveness thereof shall have been issued
and, to the best knowledge of the parties hereto, no investigation or proceeding
for that  purpose  shall have  been  instituted  or be  pending,  threatened  or
contemplated under the 1933 Act.
 
    8.5.   On or prior to the  Valuation Date, Hercules Fund shall have declared
and paid  a dividend  or dividends  and/or other  distribution or  distributions
that, together with all previous such dividends or distributions, shall have the
effect  of distributing  to its shareholders  all of  Hercules Fund's investment
company taxable income (computed without  regard to any deduction for  dividends
paid)  and all  of its net  capital gain  (after reduction for  any capital loss
carry-forward and computed without regard  to any deduction for dividends  paid)
for all taxable years ending on or before the Closing Date.
 
                                      A-10
<PAGE>
    8.6.  The parties shall have received a favorable opinion of the law firm of
Gordon  Altman Butowsky Weitzen Shalov &  Wein (based on such representations as
such law firm shall reasonably request), addressed to Piper Company and Hercules
Company, which opinion may be relied upon by the shareholders of Hercules  Fund,
substantially to the effect that, for federal income tax purposes:
 
        (a)  The  transfer of  substantially all  of  Hercules Fund's  assets in
    exchange for Piper Fund Shares and  the assumption by Piper Fund of  certain
    stated liabilities of Hercules Fund followed by the distribution by Hercules
    Fund  of Piper Fund Shares to the Hercules Fund Shareholders in exchange for
    their Hercules Fund  shares will  constitute a  "reorganization" within  the
    meaning  of Section 368(a)(1) of the Code,  and Hercules Fund and Piper Fund
    will each be  a "party to  a reorganization" within  the meaning of  Section
    368(b) of the Code;
 
        (b) No gain or loss will be recognized by Piper Fund upon the receipt of
    the assets of Hercules Fund solely in exchange for Piper Fund Shares and the
    assumption by Piper Fund of the stated liabilities of Hercules Fund;
 
        (c)  No  gain or  loss  will be  recognized  by Hercules  Fund  upon the
    transfer of the assets of Hercules Fund to Piper Fund in exchange for  Piper
    Fund  Shares and the assumption  by Piper Fund of  the stated liabilities of
    Hercules Fund or upon the distribution of Piper Fund Shares to the  Hercules
    Fund Shareholders as provided for in this Agreement;
 
        (d) No gain or loss will be recognized by the Hercules Fund Shareholders
    upon the exchange of the Hercules Fund shares for Piper Fund Shares;
 
        (e)  The  aggregate tax  basis for  Piper Fund  Shares received  by each
    Hercules Fund Shareholder pursuant to the Reorganization will be the same as
    the aggregate  tax basis  of the  Hercules  Fund shares  held by  each  such
    Hercules Fund Shareholder immediately prior to the Reorganization;
 
        (f)  The holding  period of  Piper Fund  Shares to  be received  by each
    Hercules Fund Shareholder will include the period during which the  Hercules
    Fund  shares  surrendered  in  exchange therefor  were  held  (provided such
    Hercules Fund  Shares  were  held as  capital  assets  on the  date  of  the
    Reorganization);
 
        (g)  The tax basis of the assets of Hercules Fund acquired by Piper Fund
    will be  the  same  as  the  tax basis  of  such  assets  to  Hercules  Fund
    immediately prior to the Reorganization; and
 
        (h)  The holding period of  the assets of Hercules  Fund in the hands of
    Piper Fund will include  the period during which  those assets were held  by
    Hercules Fund.
 
    Notwithstanding  anything  herein to  the contrary,  neither Piper  Fund nor
Hercules Fund may waive the condition set forth in this paragraph 8.6.
 
    8.7.  The  Amendment shall  have been  filed in  accordance with  applicable
provisions of Minnesota law.
 
9.  FEES AND EXPENSES
 
    9.1.(a)  PCM  shall bear  all direct  expenses  incurred in  connection with
    entering into and carrying out  the provisions of this Agreement,  including
    expenses  incurred in connection with  the preparation, printing, filing and
    solicitation of proxies to obtain requisite shareholder approvals.
 
        (b)  In  the  event  the   transactions  contemplated  herein  are   not
    consummated by reason of Hercules Fund's being either unwilling or unable to
    go  forward (other than  by reason of  the nonfulfillment or  failure of any
    condition to Hercules Fund's obligations specified in this Agreement), PCM's
    obligations, on behalf of Hercules  Fund, shall be limited to  reimbursement
    of Piper Fund for all reasonable out-of-pocket fees and expenses incurred by
    Piper Fund in connection with those transactions.
 
                                      A-11
<PAGE>
        (c)   In  the  event  the   transactions  contemplated  herein  are  not
    consummated by reason of Piper Fund's being either unwilling or unable to go
    forward (other  than by  reason  of the  nonfulfillment  or failure  of  any
    condition  to Piper  Fund's obligations  specified in  the Agreement), Piper
    Fund's only obligation hereunder shall be to reimburse Hercules Fund for all
    reasonable out-of-pocket  fees and  expenses incurred  by Hercules  Fund  in
    connection with those transactions.
 
10. ENTIRE AGREEMENT; SURVIVAL OF WARRANTIES
 
    10.1.  This Agreement constitutes the entire agreement between the parties.
 
    10.2.    The representations,  warranties  and covenants  contained  in this
Agreement or in any document delivered pursuant hereto or in connection herewith
shall survive the consummation of  the transactions contemplated herein,  except
that  the representations, warranties  and covenants of  Hercules Fund hereunder
shall not survive the dissolution and  complete liquidation of Hercules Fund  in
accordance with Section 1.9.
 
11. TERMINATION
 
    11.1.   This Agreement  may be terminated  and the transactions contemplated
hereby may be abandoned at any time prior to the Closing:
 
        (a) by the mutual written consent of Hercules Company and Piper Company;
 
        (b) by either Piper Company or Hercules Company by notice to the  other,
    without  liability to the  terminating party on  account of such termination
    (providing the terminating  party is  not otherwise in  material default  or
    breach  of this  Agreement) if  the Closing  shall not  have occurred  on or
    before September 15, 1996; or
 
        (c) by either Piper Fund or Hercules Fund, in writing without  liability
    to  the  terminating  party on  account  of such  termination  (provided the
    terminating party is  not otherwise in  material default or  breach of  this
    Agreement),  if (i) the  other party shall  fail to perform  in any material
    respect its agreements contained herein required to be performed on or prior
    to the Closing  Date, (ii) the  other party materially  breaches any of  its
    representations,   warranties  or  covenants  contained  herein,  (iii)  the
    Hercules Fund shareholders  fail to  approve this Agreement  at any  meeting
    called  for such  purpose at which  a quorum  was present or  (iv) any other
    condition herein  expressed  to  be  precedent to  the  obligations  of  the
    terminating  party has not been  met and it reasonably  appears that it will
    not or cannot be met.
 
        11.2.  (a)  Termination of this Agreement pursuant to paragraphs 11.1(a)
    or (b) shall terminate  all obligations of the  parties hereunder and  there
    shall be no liability for damages on the part of Piper Fund or Hercules Fund
    or  the directors or officers  of Piper Fund or  Hercules Fund, to any other
    party or its directors or officers.
 
        (b) Termination of  this Agreement pursuant  to paragraph 11.1(c)  shall
    terminate  all obligations  of the parties  hereunder and there  shall be no
    liability for damages  on the part  of Piper  Fund or Hercules  Fund or  the
    directors  or officers of Piper Fund or Hercules Fund, except that any party
    in breach of this Agreement shall, upon demand, reimburse the  non-breaching
    party  for  all  reasonable  out-of-pocket  fees  and  expenses  incurred in
    connection with the transactions  contemplated by this Agreement,  including
    legal, accounting and filing fees.
 
12. AMENDMENTS
 
    This  Agreement may be  amended, modified or supplemented  in such manner as
may be mutually agreed upon in  writing by the parties; PROVIDED, HOWEVER,  that
following  the meeting of  Hercules Fund's shareholders  called by Hercules Fund
pursuant to paragraph 4.3, no such amendment may have the effect of changing the
provisions for determining the number of Piper  Fund Shares to be issued to  the
Hercules  Fund  Shareholders  under  this Agreement  to  the  detriment  of such
Hercules Fund Shareholders without their further approval.
 
                                      A-12
<PAGE>
13. MISCELLANEOUS
 
    13.1.  The article  and paragraph headings contained  in this Agreement  are
for  reference purposes  only and  shall not  affect in  any way  the meaning or
interpretation of this Agreement.
 
    13.2.  This Agreement may be executed in any number of counterparts, each of
which shall be deemed an original.
 
    13.3.  This Agreement shall be governed by and construed in accordance  with
the laws of the State of Minnesota.
 
    13.4.   This Agreement  shall bind and  inure to the  benefit of the parties
hereto and  their  respective  successors  and assigns,  but  no  assignment  or
transfer  hereof or of any rights or  obligations hereunder shall be made by any
party without the written consent of  the other party. Nothing herein  expressed
or  implied is intended or shall be construed to confer upon or give any person,
firm or  corporation,  other  than  the  parties  hereto  and  their  respective
successors  and  assigns, any  rights or  remedies  under or  by reason  of this
Agreement.
 
    13.5.  The obligations and liabilities of Piper Company hereunder are solely
those of  Piper Fund.  It  is expressly  agreed  that no  shareholder,  nominee,
director,  officer, agent, or employee of Piper  Company on behalf of Piper Fund
shall be  personally  liable  hereunder.  The execution  and  delivery  of  this
Agreement  have been authorized by the directors  of Piper Company and signed by
authorized  officers  of  Piper  Company  acting  as  such,  and  neither   such
authorization by such directors nor such execution and delivery by such officers
shall  be deemed to have been made by  any of them individually or to impose any
liability on any of them personally.
 
    13.6.  The  obligations and  liabilities of Hercules  Company hereunder  are
solely  those of Hercules  Company. It is expressly  agreed that no shareholder,
nominee, director,  officer,  agent,  or  employee of  Hercules  Fund  shall  be
personally  liable hereunder. The execution and  delivery of this Agreement have
been authorized by the  directors of Hercules Company  and signed by  authorized
officers  of Hercules Company acting as  such, and neither such authorization by
such directors nor such execution and delivery by such officers shall be  deemed
to  have been made by any of them individually or to impose any liability on any
of them personally.
 
    IN WITNESS WHEREOF, each of the parties hereto has caused this Agreement  to
be executed by a duly authorized officer.
 
                                          HERCULES FUNDS INC., on behalf of
                                           Hercules North American
                                           Growth and Income Fund
 
                                          By: _______/s/ William H. Ellis_______
                                             Name: William H. Ellis
                                             Title: President
 
                                          PIPER FUNDS INC., on behalf of
                                           Growth and Income Fund
 
                                          By: _______/s/ Robert H. Nelson_______
                                             Name: Robert H. Nelson
                                             Title: Senior Vice President
 
                                      A-13
<PAGE>
               EXHIBIT 1 TO AGREEMENT AND PLAN OF REORGANIZATION
                             ARTICLES OF AMENDMENT
                                       TO
                           ARTICLES OF INCORPORATION
                                       OF
                              HERCULES FUNDS INC.
 
    The  undersigned  officer of  Hercules  Funds Inc.  ("Hercules  Company"), a
corporation subject to the provisions of Chapter 302A of the Minnesota Statutes,
hereby certifies  that Hercules  Company's (a)  Board of  Directors, by  written
action  dated March 29, 1996,  and (b) shareholders, at  a meeting held June 18,
1996, adopted the resolutions  hereinafter set forth;  and such officer  further
certifies  that the amendments  to Hercules Company's  Articles of Incorporation
set forth in such resolutions were adopted pursuant to Chapter 302A.
 
    WHEREAS, Hercules Company is registered as an open-end management investment
company (I.E.,  a mutual  fund) under  the Investment  Company Act  of 1940  and
offers  its shares to the  public in several series,  each of which represents a
separate and distinct portfolio of assets; and
 
    WHEREAS, it is  desirable and in  the best  interest of the  holders of  the
Hercules  North American Growth  and Income Fund ("Hercules  Fund"), a series of
Hercules Company,  that the  assets belonging  to such  series, subject  to  its
stated  liabilities, be sold to Growth and  Income Fund ("Piper Fund"), a series
of Piper Funds Inc. ("Piper Company"),  a Minnesota corporation and an  open-end
management  investment company  registered under  the Investment  Company Act of
1940, in exchange for shares of Piper Fund; and
 
    WHEREAS, Hercules Company wishes to provide for the PRO RATA distribution of
such shares of Piper Fund received by  it to holders of shares of Hercules  Fund
and  the simultaneous cancellation  and retirement of  the outstanding shares of
Hercules Fund; and
 
    WHEREAS, Hercules Company and Piper  Company have entered into an  Agreement
and Plan of Reorganization providing for the foregoing transactions; and
 
    WHEREAS, the Agreement and Plan of Reorganization requires that, in order to
bind  all shareholders  of Hercules Fund  to the foregoing  transactions, and in
particular to bind such shareholders to  the cancellation and retirement of  the
outstanding  shares of Hercules Fund,  it is necessary to  adopt an amendment to
Hercules Company's Articles of Incorporation.
 
    NOW,  THEREFORE,  BE  IT  RESOLVED,  that  Hercules  Company's  Articles  of
Incorporation  be, and the same hereby are, amended to add the following Article
5A immediately following Article 5 thereof:
 
    5A. (a) For purposes of this Article 5A, the following terms shall have  the
    following meanings:
 
        "HERCULES COMPANY" means the Corporation.
 
        "PIPER COMPANY" means Piper Funds Inc., a Minnesota corporation.
 
        "ACQUIRED  FUND" means Hercules Company's Hercules North American Growth
    and Income Fund, the Series A Shares of the Corporation.
 
        "ACQUIRING FUND" means Piper Company's Growth and Income Fund.
 
        "VALUATION DATE" means the day established in the Agreement and Plan  of
    Reorganization,  as  the day  upon which  the value  of the  Acquired Fund's
    assets is determined for purposes of the reorganization.
 
        "CLOSING DATE" means 9:00  a.m. on the next  business day following  the
    Valuation  Date or such other date and  time set forth in the pertinent plan
    of reorganization or liquidation, as the  case may be, for the  consummation
    of the reorganization or liquidation.
 
        (b)  At the Closing Date, the assets belonging to the Acquired Fund, the
    Special Liabilities associated with such assets, and the General Assets  and
    General  Liabilities allocated  to the Acquired  Fund, shall be  sold to and
    assumed   by   the   Acquiring   Fund   in   return   for   Acquiring   Fund
<PAGE>
    shares,  all  pursuant  to the  Agreement  and Plan  of  Reorganization. For
    purposes of  the  foregoing,  the  terms  "assets  belonging  to",  "Special
    Liabilities",  "General Assets", and "General Liabilities" have the meanings
    assigned to  them  in Article  7(b),  (c),  and (d)  of  Hercules  Company's
    Articles of Incorporation.
 
        (c)  The number of Acquiring Fund shares  to be received by the Acquired
    Fund and  distributed by  it  to the  Acquired  Fund shareholders  shall  be
    determined as follows:
 
           (i)  The value of the Acquired Fund's  assets and the net asset value
       per share of  the Acquiring  Fund's shares shall  be computed  as of  the
       Valuation  Date using the valuation procedures set forth in the Acquiring
       Fund's then-current Prospectus and  Statement of Additional  Information,
       and  as may be required by the Investment Company Act of 1940, as amended
       (the "1940 Act").
 
           (ii)  The  total  number  of  Acquiring  Fund  shares  to  be  issued
       (including  fractional  shares,  if  any)  in  exchange  for  assets  and
       liabilities of the Acquired Fund shall be determined as of the  Valuation
       Date  by dividing  the value  of the Acquired  Fund's assets,  net of its
       stated liabilities on  the Closing Date  to be assumed  by the  Acquiring
       Fund,  by the  net asset  value of the  Acquiring Fund's  shares, each as
       determined pursuant to (i) above.
 
          (iii) On the Closing Date, or  as soon as practicable thereafter,  the
       Acquired  Fund shall distribute PRO RATA to its shareholders of record as
       of the  Valuation Date  the  full and  fractional Acquiring  Fund  shares
       received by the Acquired Fund pursuant to (ii) above.
 
        (d)   The  distribution  of  Acquiring  Fund  shares  to  Acquired  Fund
    shareholders provided for in paragraph (c) above shall be accomplished by an
    instruction, signed by Hercules  Company's Secretary, to transfer  Acquiring
    Fund shares then credited to the Acquired Fund's account on the books of the
    Acquiring  Fund to open accounts  on the books of  the Acquiring Fund in the
    names  of  the  Acquired  Fund  shareholders  in  amounts  representing  the
    respective   PRO  RATA  number  of  Acquiring  Fund  shares  due  each  such
    shareholder pursuant to the foregoing provisions. All issued and outstanding
    shares of the Acquired Fund shall simultaneously be canceled on the books of
    the Acquired Fund and retired.
 
        (e) From and after the Closing  Date, the Acquired Fund shares  canceled
    and  retired  pursuant  to paragraph  (d)  above  shall have  the  status of
    authorized and unissued Shares of  Hercules Company, without designation  as
    to series.
 
    IN WITNESS WHEREOF, the undersigned officer of Hercules Company has executed
these Articles of Amendment on behalf of Hercules Company on           , 1996.
 
                                          HERCULES FUNDS INC.
 
                                          By ___________________________________
 
                                          Its __________________________________
 
                                       2
<PAGE>
                                                                       EXHIBIT B
 
                                  GROWTH FUND
                              EMERGING GROWTH FUND
                             GROWTH AND INCOME FUND
                              EQUITY STRATEGY FUND
                                 BALANCED FUND
                                  A SERIES OF
                                PIPER FUNDS INC.
                      Supplement dated January 24, 1996 to
                        Prospectus dated April 27, 1995
 
The   section  of  the   prospectus  on  page   31  entitled  "Special  Purchase
Plans--Purchases by  Other Individuals  Without a  Sales Charge"  is amended  by
adding the following paragraph:
 
        American Government Term Trust Inc. ("AGT"), a closed-end fund which
    was managed by
    the  Adviser,  recently  dissolved  and distributed  its  net  assets to
    shareholders. Former AGT
    shareholders may invest the distributions received by them in connection
    with such dissolution in shares of the Funds without payment of a  sales
    charge.  (Any such  sales are subject  to the eligibility  of Fund share
    purchases in the shareholder's state  as well as the minimum  investment
    requirements and other applicable terms set forth in this Prospectus).
<PAGE>
                                              PROSPECTUS DATED NOVEMBER 27, 1995
 
                                PIPER FUNDS INC.
                              PIPER JAFFRAY TOWER
           222 SOUTH NINTH STREET, MINNEAPOLIS, MINNESOTA 55402-3804
                           (800) 866-7778 (TOLL FREE)
 
    Growth  Fund, Emerging Growth Fund, Growth  and Income Fund, Equity Strategy
Fund and  Balanced  Fund (the  "Funds")  are series  of  Piper Funds  Inc.  (the
"Company"),  an  open-end  mutual fund  whose  shares are  currently  offered in
thirteen series.  Each  Fund has  its  own investment  objectives  and  policies
designed to meet different investment goals.
 
    GROWTH  FUND (formerly  Value Fund)  has a  primary investment  objective of
long-term capital appreciation with secondary  objectives of current income  and
conservation of principal. The Fund invests primarily in a diversified portfolio
of common stocks or securities convertible into or carrying rights to buy common
stocks.
 
    EMERGING  GROWTH  FUND  has  an investment  objective  of  long-term capital
appreciation. The  Fund  invests  primarily  in  common  stocks  and  securities
convertible into common stocks of emerging growth companies, with an emphasis on
companies  headquartered or  maintaining offices or  manufacturing facilities in
states in which the Distributor maintains offices.
 
    GROWTH AND INCOME FUND has investment objectives of both current income  and
long-term  growth  of  capital  and  income.  The  Fund  invests  in  a  broadly
diversified portfolio of securities,  with an emphasis  on securities of  large,
established  companies that  have a  history of  dividend payments  and that the
Adviser believes are undervalued.
 
    EQUITY STRATEGY FUND has an investment objective of a high total  investment
return  consistent with prudent  investment risk. The  Fund invests primarily in
common stocks and securities convertible into  or carrying rights to buy  common
stocks  of companies representing a number  of different sectors of the economy.
In pursuing its objective,  the Fund expects to  have a high portfolio  turnover
rate.
 
    BALANCED FUND has investment objectives of both current income and long-term
capital appreciation consistent with conservation of principal. The Fund invests
primarily  in  common  stocks  and  fixed-income  securities  with  emphasis  on
income-producing securities  that  appear to  have  some potential  for  capital
appreciation.
 
    INVESTMENTS  IN CERTAIN FUNDS MAY  INVOLVE ADDITIONAL RISKS. EQUITY STRATEGY
FUND MAY ENGAGE IN  SHORT-TERM TRADING IN ATTEMPTING  TO ACHIEVE ITS  INVESTMENT
OBJECTIVE,  WHICH WILL INCREASE TRANSACTION  COSTS. IN ADDITION, EQUITY STRATEGY
FUND MAY SELL  SECURITIES SHORT.  EACH FUND  MAY INVEST  IN ILLIQUID  SECURITIES
WHICH  WILL INVOLVE  GREATER RISK THAN  INVESTMENTS IN OTHER  SECURITIES AND MAY
INCREASE FUND EXPENSES. SEE "SPECIAL INVESTMENT METHODS" FOR A DISCUSSION OF THE
RISKS OF EACH OF THESE TECHNIQUES.
 
    This Prospectus concisely describes the information about the Funds that you
ought to know before  investing. Please read it  carefully before investing  and
retain it for future reference.
 
    A  Statement of  Additional Information about  the Funds  dated November 27,
1995, is available free of  charge. Write to the  Funds at Piper Jaffray  Tower,
222  South Ninth  Street, Minneapolis,  Minnesota 55402-3804  or telephone (800)
866-7778 (toll free).  The Statement  of Additional Information  has been  filed
with  the Securities and Exchange Commission and is incorporated in its entirety
by reference in this Prospectus.
 
    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.
<PAGE>
                                  INTRODUCTION
 
    Growth  Fund (formerly Value Fund), Emerging  Growth Fund, Growth and Income
Fund, Equity Strategy Fund and Balanced Fund (sometimes referred to herein as  a
"Fund"  or, collectively, as  the "Funds") are  series of Piper  Funds Inc. (the
"Company"). The Company is an  open-end management investment company  organized
under  the laws  of the  State of  Minnesota in  1986, the  shares of  which are
currently offered  in thirteen  series.  Each Fund  has a  different  investment
objective  and is designed to  meet different investment needs  and each Fund is
classified as a diversified fund.
 
THE INVESTMENT ADVISER
 
    The Company  is  managed  by  Piper  Capital  Management  Incorporated  (the
"Adviser"),  a wholly owned subsidiary of Piper Jaffray Companies Inc. Each Fund
pays the Adviser a fee for managing its investment portfolio. Fees for each Fund
are paid at an  annual rate of  .75% on net  assets up to  $100 million and  are
scaled downward as assets increase in size. These fees are higher than fees paid
by most other investment companies. See "Management--Investment Adviser."
 
THE DISTRIBUTOR
 
    Piper  Jaffray Inc.  ("Piper Jaffray"), a  wholly owned  subsidiary of Piper
Jaffray Companies Inc. and an affiliate of the Adviser, serves as Distributor of
the Funds' shares.
 
OFFERING PRICE
 
    Shares of the Funds  are offered to  the public at  the next determined  net
asset  value  after  receipt  of  an  order  by  a  shareholder's  Piper Jaffray
Investment Executive or other broker-dealer, plus  a maximum sales charge of  4%
of  the offering price (4.17% of the net  asset value) on purchases of less than
$100,000. The  sales charge  is reduced  on a  graduated scale  on purchases  of
$100,000  or more. In connection with purchases of $500,000 or more, there is no
initial sales charge;  however, a 1%  contingent deferred sales  charge will  be
imposed  in the  event of  a redemption  transaction occurring  within 24 months
following such a purchase. See "How to Purchase Shares--Public Offering Price."
 
MINIMUM INITIAL AND SUBSEQUENT INVESTMENTS
 
    The minimum initial investment  for each Fund is  $250. There is no  minimum
for subsequent investments. See "How to Purchase Shares--Minimum Investments."
 
EXCHANGES
 
    You  may exchange your shares for shares of any other mutual fund managed by
the Adviser (except  Hercules Funds  Inc.) which is  open to  new investors  and
eligible  for sale in your state of  residence. All exchanges are subject to the
minimum investment  requirements and  other applicable  terms set  forth in  the
prospectus of the fund whose shares you acquire. You may make four exchanges per
year  without payment  of a  service charge. Thereafter,  there is  a $5 service
charge for each exchange. See "Shareholder Services-- Exchange Privilege."
 
REDEMPTION PRICE
 
    Shares of any Fund may be redeemed at any time at their net asset value next
determined after  a  redemption  request  is  received  by  your  Piper  Jaffray
Investment  Executive or other broker-dealer. A contingent deferred sales charge
will be  imposed  upon the  redemption  of certain  shares  initially  purchased
without  a sales  charge. See "How  to Redeem  Shares--Contingent Deferred Sales
Charge." Each Fund reserves the right,  upon 30 days' written notice, to  redeem
an  account in any Fund if  the net asset value of  the shares falls below $200.
See "How to Redeem Shares--Involuntary Redemption."
 
CERTAIN RISK FACTORS TO CONSIDER
 
    An investment in any of the Funds is subject to certain risks, as set  forth
in  detail under  "Investment Objectives  and Policies"  and "Special Investment
Methods." As with other mutual  funds, there can be  no assurance that any  Fund
will  achieve its objective.  Each of the  Funds is subject  to market risk (the
risk that a security will be worth less when it is sold than when it was  bought
due  to any  number of  factors, including  reduced demand  or loss  of investor
confidence in  the  market) and/or  interest-rate  risk (the  risk  that  rising
interest  rates will make bonds issued at lower interest rates worth less). As a
result, the value of each Fund's
 
                                       2
<PAGE>
shares will  vary. Some  or all  of the  Funds, to  the extent  set forth  under
"Investment  Objectives  and  Policies" and  "Special  Investment  Methods," may
engage in the following investment practices: the use of repurchase  agreements,
the lending of portfolio securities, borrowing from banks, entering into options
transactions  on securities in which the Funds  may invest and on stock indexes,
the use of stock  index futures contracts and  interest rate futures  contracts,
entering  into options  on futures  contracts, the use  of short  sales, and the
purchase or sale of securities on  a "when-issued" or forward commitment  basis,
including  the use of  mortgage dollar rolls. These  techniques may increase the
volatility of  a Fund's  net asset  value. Equity  Strategy Fund  may engage  in
short-term trading in attempting to achieve its investment objective, which will
increase  transaction  costs.  Balanced  Fund and  Growth  and  Income  Fund may
purchase mortgage-related securities, including derivative mortgage  securities.
In  addition to interest  rate risk, mortgage-related  securities are subject to
prepayment risk.  Recent market  experience has  shown that  certain  derivative
mortgage  securities may be extremely sensitive to changes in interest rates and
in prepayment rates  on the  underlying mortgage assets  and, as  a result,  the
prices  of such  securities may  be highly  volatile. All  of these transactions
involve certain special  risks, as  set forth under  "Investment Objectives  and
Policies" and "Special Investment Methods."
 
SHAREHOLDER INQUIRIES
 
    Any  questions or communications  regarding a shareholder  account should be
directed to your Piper  Jaffray Investment Executive or,  in the case of  shares
held through another broker-dealer, to IFTC at (800) 874-6205. General inquiries
regarding  the Funds should be directed to the Funds at the telephone number set
forth on the cover page of this Prospectus.
 
                                 FUND EXPENSES
 
<TABLE>
<CAPTION>
                                                             EMERGING   GROWTH AND    EQUITY
                                                    GROWTH    GROWTH      INCOME     STRATEGY   BALANCED
                                                     FUND      FUND        FUND        FUND       FUND
                                                    ------   --------   ----------   --------   --------
<S>                                                 <C>      <C>        <C>          <C>        <C>
SHAREHOLDER TRANSACTION EXPENSES
  Maximum Sales Load Imposed on Purchases
    (as a percentage of offering price)...........  4.00%     4.00%       4.00%       4.00%      4.00%
  Exchange Fee *                                    $  0         0           0           0          0
ANNUAL FUND OPERATING EXPENSES
  (as a percentage of average net assets)
  Management Fees.................................   .71%      .70%        .75%        .75%       .75%
  Rule 12b-1 Fees (after voluntary limitation)
    **............................................   .32%      .32%        .32%        .32%       .32%
  Other Expenses (after voluntary expense reim-
    bursement) **.................................   .24%      .22%        .25%        .33%       .25%
                                                    ------     ---         ---         ---        ---
  Total Fund Operating Expenses (after voluntary
    limitations and expense reimbursements).......  1.27%     1.24%       1.32%       1.40%      1.32%
</TABLE>
 
- ---------
 *  There is a $5.00 fee for each exchange in excess of four exchanges per year.
    See "How to Purchase Shares--Exchange Privilege."
 
**  See the discussion  below for  an explanation  of voluntary  Rule 12b-1  fee
    limitations and expense reimbursements.
 
                                       3
<PAGE>
EXAMPLE
 
    You would pay the following expenses on a $1,000 investment, assuming (1) 5%
annual return and (2) redemption at the end of each time period:
 
<TABLE>
<CAPTION>
                                                             EMERGING   GROWTH AND    EQUITY
                                                    GROWTH    GROWTH      INCOME     STRATEGY   BALANCED
                                                     FUND      FUND        FUND        FUND       FUND
                                                    ------   --------   ----------   --------   --------
<S>                                                 <C>      <C>        <C>          <C>        <C>
 1 Year ........................................ $    52        52          53          53         53
 3 Years ....................................... $    79        78          80          80         80
 5 Years ....................................... $   107       106         109         109        109
10 Years ....................................... $   187       185         193         193        193
</TABLE>
 
    The  purpose  of  the  above  Fund  Expenses  table  is  to  assist  you  in
understanding the various costs  and expenses that investors  in the Funds  will
bear  directly or indirectly. THE  EXAMPLE CONTAINED IN THE  TABLE SHOULD NOT BE
CONSIDERED A REPRESENTATION OF PAST OR  FUTURE EXPENSES. ACTUAL EXPENSES MAY  BE
GREATER OR LESS THAN THOSE SHOWN.
 
    The  information  set  forth  in  the  table  is  based  on  actual expenses
(including expenses paid  through expense offset  arrangements) incurred by  the
Funds  during the  fiscal year  ended September 30,  1995. The  expenses for all
Funds reflect a voluntary limitation by the Distributor of the fee payable to it
under each Fund's  Rule 12b-1  Plan to  .32% of  each Fund's  average daily  net
assets.  In  addition, the  Adviser reimbursed  Growth  and Income  Fund, Equity
Strategy Fund and  Balanced Fund for  the amount by  which total Fund  operating
expenses  (excluding  expenses  paid through  expense  offset  arrangements) for
fiscal 1995 exceeded 1.32%  of average daily net  assets. Absent any Rule  12b-1
fee limitations or expense reimbursements, Total Fund Operating Expenses for the
fiscal  year ended  September 30,  1995, as  a percentage  of average  daily net
assets, would have been 1.45% for  Growth Fund, 1.42% for Emerging Growth  Fund,
1.60%  for Growth and Income Fund, 1.63%  for Equity Strategy Fund and 1.65% for
Balanced Fund. The voluntary  Rule 12b-1 fee limitations  for each Fund and  the
expense  reimbursements for  Growth and  Income Fund,  Equity Strategy  Fund and
Balanced Fund reflected in  the Fund Expenses table  may be discontinued at  any
time  after  the  fiscal  1996 year  end.  The  Adviser may  or  may  not assume
additional expenses of  the Funds from  time to time,  in its discretion,  while
retaining  the ability to be reimbursed by the Funds for expenses assumed during
a fiscal year prior to the end of such year. The foregoing policy will have  the
effect  of  lowering a  Fund's  overall expense  ratio  and increasing  yield to
investors when such  amounts are assumed  or the inverse  when such amounts  are
reimbursed.
 
    As  a result of each Fund's annual payment  of its Rule 12b-1 fee, a portion
of which is considered an asset-based sales charge, long-term shareholders of  a
Fund  may pay more than  the economic equivalent of  the maximum 6.25% front end
sales charge permitted under the rules of the National Association of Securities
Dealers, Inc. For additional information, including a more complete  explanation
of  management  and Rule  12b-1 fees,  see "Management--Investment  Adviser" and
"Distribution of Fund Shares."
 
                                       4
<PAGE>
                              FINANCIAL HIGHLIGHTS
 
    The following financial highlights show certain per share data and  selected
information  for  a  share of  capital  stock outstanding  during  the indicated
periods for each Fund.  This information has been  audited by KPMG Peat  Marwick
LLP,  independent auditors, and should be read in conjunction with the financial
statements of each Fund contained in its annual report. An annual report of each
Fund is available without charge by  contacting the Funds at 800-866-7778  (toll
free).  In addition to financial statements,  the annual reports contain further
information about the performance of the Funds.
 
GROWTH FUND
 
<TABLE>
<CAPTION>
                                                                                               PERIOD                PERIOD
                                                                                                FROM                  FROM
                                                         FISCAL YEAR ENDED SEPTEMBER 30,       11/1/88     YEAR     3/16/87*
                                                    -----------------------------------------    TO       ENDED        TO
                                                     1995   1994   1993   1992   1991   1990   9/30/89   10/31/88   10/31/87
                                                    ------  -----  -----  -----  -----  -----  -------   --------   --------
<S>                                                 <C>     <C>    <C>    <C>    <C>    <C>    <C>       <C>        <C>
Net asset value, beginning of period..............  $18.90  19.30  17.06  16.86  11.69  12.46    9.60       8.61      10.00
                                                    ------  -----  -----  -----  -----  -----  -------   --------   --------
Operations:
  Net investment income...........................    0.08   0.08   0.12   0.17   0.19   0.20    0.17      0.19        0.10
  Net realized and unrealized gains (losses) on
    investments...................................    3.60  (0.37)  2.24   0.76   5.18  (0.78)   2.86      0.98       (1.40)
                                                    ------  -----  -----  -----  -----  -----  -------   --------   --------
      Total from operations.......................    3.68  (0.29)  2.36   0.93   5.37  (0.58)   3.03      1.17       (1.30)
                                                    ------  -----  -----  -----  -----  -----  -------   --------   --------
Distributions from net investment income..........   (0.08) (0.11) (0.12) (0.16) (0.20) (0.19)  (0.17)    (0.18)      (0.09)
Distributions from net realized gains.............   (2.10)  --     --    (0.57)  --     --      --        --         --
                                                    ------  -----  -----  -----  -----  -----  -------   --------   --------
      Total distributions.........................   (2.18) (0.11) (0.12) (0.73) (0.20) (0.19)  (0.17)    (0.18)      (0.09)
                                                    ------  -----  -----  -----  -----  -----  -------   --------   --------
Net asset value, end of period....................  $20.40  18.90  19.30  17.06  16.86  11.69   12.46      9.60        8.61
                                                    ------  -----  -----  -----  -----  -----  -------   --------   --------
                                                    ------  -----  -----  -----  -----  -----  -------   --------   --------
Total return (%)+.................................   20.60  (1.51) 13.85   5.76  46.23  (4.81)  31.90     13.79      (13.16)
Net assets end of period (in millions)............  $  172    195    252    200    107     47      37        19          18
Ratio of expenses to average daily net assets
  (%)++...........................................    1.27   1.23   1.26   1.29   1.32   1.31    1.30**    1.30        1.00**
Ratio of net investment income to average daily
  net assets (%)++................................    0.40   0.43   0.66   1.04   1.25   1.57    1.75**    2.06        1.84**
Portfolio turnover rate (excluding short-term
  securities) (%).................................      80     11     45     36     36     37      48        52          32
</TABLE>
 
- ----------
 
 *Commencement of operations.
 
**Adjusted to an annual basis.
 
 +Total return is  based on the  change in  net asset value  during the  period,
  assumes reinvestment of all distributions and does not reflect a sales charge.
 
++During  the periods reflected  above, the Advisor  and Distributor voluntarily
  waived fees and expenses. Had the Fund  paid all expenses and had the  maximum
  Rule  12b-1 fee  been in  effect, the  ratios of  expenses and  net investment
  income to average daily net assets would have been: 1.45%/022% in fiscal 1995,
  1.42%/0.24% in fiscal 1994, 1.44%/0.48% in fiscal 1993, 1.47%/0.86% in  fiscal
  1992,  1.55%/1.02% in fiscal 1991, 1.64%/1.24%  in fiscal 1990, 1.89%/1.16% in
  fiscal 1989,  1.96%/1.40%  in fiscal  1988  and 2.29%/0.55%  in  fiscal  1987.
  Beginning  in  fiscal 1995,  the expense  ratio reflects  the effect  of gross
  expenses paid indirectly  by the Fund.  Prior period expense  ratios have  not
  been adjusted.
 
                                       5
<PAGE>
EMERGING GROWTH FUND
 
<TABLE>
<CAPTION>
                                                         FISCAL YEAR ENDED SEPTEMBER 30,
                                                    ------------------------------------------
                                                     1995   1994   1993   1992   1991   1990*
                                                    ------  -----  -----  -----  -----  ------
<S>                                                 <C>     <C>    <C>    <C>    <C>    <C>
Net asset value, beginning of period..............  $19.26  19.73  14.41  13.86   8.59   10.00
                                                    ------  -----  -----  -----  -----  ------
Operations:
  Net investment income (loss)....................   (0.11) (0.07) (0.05) (0.01)  0.02    0.02
  Net realized and unrealized gains (losses) on
    investments...................................    6.80  (0.40)  5.37   0.64   5.28   (1.42)
                                                    ------  -----  -----  -----  -----  ------
      Total from operations.......................    6.69  (0.47)  5.32   0.63   5.30   (1.40)
                                                    ------  -----  -----  -----  -----  ------
Distributions from net investment income..........    --     --     --     --    (0.03)  (0.01)
Distributions from net realized gains.............    --     --     --    (0.08)  --      --
                                                    ------  -----  -----  -----  -----  ------
      Total distributions.........................    --     --     --    (0.08) (0.03)  (0.01)
                                                    ------  -----  -----  -----  -----  ------
Net asset value, end of period....................  $25.95  19.26  19.73  14.41  13.86    8.59
                                                    ------  -----  -----  -----  -----  ------
                                                    ------  -----  -----  -----  -----  ------
Total return (%)+.................................   34.68  (2.38) 36.92   4.55  61.80  (14.01)
 
Net asset, end of period (in millions)............  $  253    224    191    110     56      21
Ratio of expenses to average daily net assets
  (%)++...........................................    1.24   1.24   1.29   1.30   1.30    1.30**
Ratio of net investment income to average daily
  net assets (%)++................................   (0.51) (0.38) (0.34) (0.14)  0.11    0.71**
Portfolio turnover rate (excluding short-term
  securities) (%).................................      33     31     30     21     27       6
</TABLE>
 
- ----------
 
 *Period from 4/23/90 (commencement of operations) to 9/30/90.
 
**Adjusted to an annual basis.
 
 +Total  return is  based on the  change in  net asset value  during the period,
  assumes reinvestment of all distributions and does not reflect a sales charge.
 
++During  the  periods  reflected  above,   the  Adviser  and  the   Distributor
  voluntarily  waived fees and expenses. Had the  Fund paid all expenses and had
  the maximum Rule  12b-1 fee been  in effect,  the ratios of  expenses and  net
  investment  income to average daily net  assets would have been: 1.42%/(0.69%)
  in fiscal 1995, 1.44%/(0.58%)  in fiscal 1994,  1.49%/(0.54%) in fiscal  1993,
  1.56%/(0.40%)  in fiscal 1992, 1.70%/(0.29%) in fiscal 1991 and 1.95%/0.06% in
  fiscal 1990. Beginning in fiscal 1995,  the expense ratio reflects the  effect
  of  gross expenses  paid indirectly by  the Fund. Prior  period expense ratios
  have not been adjusted.
 
                                       6
<PAGE>
GROWTH AND INCOME FUND
 
<TABLE>
<CAPTION>
                                                                             FISCAL YEAR ENDED SEPTEMBER 30,
                                                                        ------------------------------------------
                                                                          1995       1994       1993       1992*
                                                                        ---------  ---------  ---------  ---------
<S>                                                                     <C>        <C>        <C>        <C>
Net asset value, beginning of period..................................  $   10.27      10.30      10.01      10.00
                                                                        ---------  ---------  ---------  ---------
Operations:
  Net investment income...............................................       0.19       0.24       0.24       0.03
  Net realized and unrealized gains (losses) on investments...........       2.70       0.02       0.29      (0.02)
                                                                        ---------  ---------  ---------  ---------
      Total from operations...........................................       2.89       0.26       0.53       0.01
                                                                        ---------  ---------  ---------  ---------
Distributions from net investment income..............................      (0.19)     (0.24)     (0.24)    --
Distributions from net realized gains.................................      (0.04)     (0.05)    --         --
                                                                        ---------  ---------  ---------  ---------
      Total distributions.............................................      (0.23)     (0.29)     (0.24)    --
                                                                        ---------  ---------  ---------  ---------
Net asset value, end of period........................................  $   12.93      10.27      10.30      10.01
                                                                        ---------  ---------  ---------  ---------
                                                                        ---------  ---------  ---------  ---------
Total return (%)+.....................................................      28.81       2.53       5.41       0.10
 
Net assets, end of period (in millions)...............................  $      73         73         96         52
Ratio of expenses to average daily net assets (%)++...................       1.32       1.29       1.32       1.28**
Ratio of net investment income to average daily net assets (%)++......       1.93       2.26       2.51       3.00**
Portfolio turnover rate (excluding short-term securities) (%).........         14         20         26          1
</TABLE>
 
- ----------
 
 *Period from 7/21/92 (commencement of operations) to 9/30/92.
 
**Adjusted to an annual basis.
 
 +Total return is  based on the  change in  net asset value  during the  period,
  assumes reinvestment of all distributions and does not reflect a sales charge.
 
++During   the  periods  reflected  above,   the  Adviser  and  the  Distributor
  voluntarily waived fees and expenses. Had  the Fund paid all expenses and  had
  the  maximum Rule  12b-1 fee been  in effect,  the ratios of  expenses and net
  investment income to average daily net assets would have been: 1.60%/1.65%  in
  fiscal  1995,  1.62%/1.93%  in fiscal  1994,  1.58%/2.25% in  fiscal  1993 and
  2.06%/2.22% in  fiscal  1992. Beginning  in  fiscal 1995,  the  expense  ratio
  reflects  the  effect of  gross expenses  paid indirectly  by the  Fund. Prior
  period expense ratios have not been adjusted.
 
                                       7
<PAGE>
EQUITY STRATEGY FUND
 
<TABLE>
<CAPTION>
                                                                                                                         PERIOD
                                                                                                                          FROM
                                                         FISCAL YEAR ENDED SEPTEMBER 30,       PERIOD FROM     YEAR     3/16/87*
                                                    -----------------------------------------  11/1/88 TO     ENDED        TO
                                                     1995   1994   1993   1992   1991   1990     9/30/89     10/31/88   10/31/87
                                                    ------  -----  -----  -----  -----  -----  -----------   --------   --------
<S>                                                 <C>     <C>    <C>    <C>    <C>    <C>    <C>           <C>        <C>
Net asset value, beginning of period..............  $17.17  16.84  13.57  12.82   9.17  10.05      8.07        7.90       10.00
                                                    ------  -----  -----  -----  -----  -----  -----------   --------   --------
Operations:
  Net investment income+++........................    0.11   0.07   0.03   0.08   0.07   0.10      0.38        0.09        0.08
  Net realized and unrealized gains (losses) on
    investments...................................    2.27   0.29   3.30   0.71   3.65  (0.74)     1.85        0.19       (2.11)
                                                    ------  -----  -----  -----  -----  -----  -----------   --------   --------
      Total from operations.......................    2.38   0.36   3.33   0.79   3.72  (0.64)     2.23        0.28       (2.03)
                                                    ------  -----  -----  -----  -----  -----  -----------   --------   --------
Distributions from net investment income..........   (0.09) (0.03) (0.06) (0.04) (0.07) (0.24)    (0.25)      (0.11)       0.07
                                                    ------  -----  -----  -----  -----  -----  -----------   --------   --------
Net asset value, end of period....................  $19.46  17.17  16.84  13.57  12.82   9.17     10.05        8.07        7.90
                                                    ------  -----  -----  -----  -----  -----  -----------   --------   --------
                                                    ------  -----  -----  -----  -----  -----  -----------   --------   --------
Total return (%)+.................................   13.88   2.12  24.56   6.18  40.71  (6.61)    27.86        3.47      (20.48)
 
Net assets end of period (in millions)............  $   48     78     84      9      9      8        13          19          28
Ratio of expenses to average daily net assets
  (%)++...........................................    1.40   1.32   1.28   1.47   1.32   1.49      1.30**      1.52        1.02**
Ratio of net investment income to average daily
  net assets (%)++................................    0.43   0.37   0.50   0.56   0.61   1.03      3.95**      1.13        1.51**
Portfolio turnover rate (excluding short-term
  securities) (%).................................     182    177    154    420    507    514       375         202         200
</TABLE>
 
- ----------
 
  *Commencement of operations.
 
 **Adjusted to an annual basis.
 
  +Total return is based  on the change  in net asset  value during the  period,
   assumes  reinvestment  of  all distributions  and  does not  reflect  a sales
   charge.
 
 ++During the periods reflected above,  the Adviser and Distributor  voluntarily
   waived  fees and expenses. Had the Fund paid all expenses and had the maximum
   Rule 12b-1 fee  been in  effect, the ratios  of expenses  and net  investment
   income  to average  daily net assets  would have been:  1.63%/0.20% in fiscal
   1995, 1.54%/0.15% in fiscal 1994, 1.86%/(0.08%) in fiscal 1993, 2.49%/(0.46%)
   in fiscal 1992, 2.39%/(0.46%) in  fiscal 1991, 2.55%/(0.03%) in fiscal  1990,
   2.23%/3.02%  in fiscal  1989, 2.20%/0.45% in  fiscal 1988  and 2.24%/0.29% in
   fiscal 1987. Beginning in fiscal 1995, the expense ratio reflects the  effect
   of  gross expenses paid  indirectly by the Fund.  Prior period expense ratios
   have not been adjusted.
 
+++For the years ended September 30, 1992, and October 31, 1988, gross  expenses
   included $0.02 per share of income tax expense.
 
                                       8
<PAGE>
BALANCED FUND
 
<TABLE>
<CAPTION>
                                                                                                                         PERIOD
                                                                                                                          FROM
                                                         FISCAL YEAR ENDED SEPTEMBER 30,       PERIOD FROM     YEAR     3/16/87*
                                                    -----------------------------------------  11/1/88 TO     ENDED        TO
                                                     1995   1994   1993   1992   1991   1990     9/30/89     10/31/88   10/31/87
                                                    ------  -----  -----  -----  -----  -----  -----------   --------   --------
<S>                                                 <C>     <C>    <C>    <C>    <C>    <C>    <C>           <C>        <C>
Net asset value, beginning of period..............  $11.81  12.23  11.88  10.77   8.87  10.00      9.19        8.97       10.00
                                                    ------  -----  -----  -----  -----  -----  -----------   --------   --------
Operations:
  Net investment income...........................    0.47   0.38   0.34   0.38   0.43   0.42      0.44        0.51        0.28
  Net realized and unrealized gains (losses) on
    investments...................................    1.93  (0.26)  0.65   1.17   1.89  (1.14)     0.83        0.22       (1.09)
                                                    ------  -----  -----  -----  -----  -----  -----------   --------   --------
      Total from operations.......................    2.40   0.12   0.99   1.55   2.32  (0.72)     1.27        0.73       (0.81)
                                                    ------  -----  -----  -----  -----  -----  -----------   --------   --------
Distributions from net investment income..........   (0.35) (0.37) (0.34) (0.39) (0.42) (0.41)    (0.46)      (0.51)      (0.22)
Distributions from net realized gains.............   (0.12) (0.17) (0.30) (0.05)  --     --       --           --         --
                                                    ------  -----  -----  -----  -----  -----  -----------   --------   --------
      Total distributions.........................   (0.47) (0.54) (0.64) (0.44) (0.42) (0.41)    (0.46)      (0.51)      (0.22)
                                                    ------  -----  -----  -----  -----  -----  -----------   --------   --------
Net asset value, end of period....................  $13.74  11.81  12.23  11.88  10.77   8.87     10.00        9.19        8.97
                                                    ------  -----  -----  -----  -----  -----  -----------   --------   --------
                                                    ------  -----  -----  -----  -----  -----  -----------   --------   --------
Total return (%)+.................................   21.78   1.00   8.51  14.75  26.61  (7.42)    14.20        8.53       (8.24)
 
Net assets end of period (in millions)............  $   44     46     57     28     15     14        16          13          13
Ratio of expenses to average daily net assets
  (%)++...........................................    1.32   1.32   1.32   1.32   1.32   1.31      1.30**      1.30         .99**
Ratio of net investment income to average daily
  net assets (%)++................................    3.54   3.03   3.13   3.57   4.15   4.32      5.15**      5.58        5.46**
Portfolio turnover rate (excluding short-term
  securities) (%).................................      39     62     41     58     44    105        95          73          95
</TABLE>
 
- ----------
 
 *Commencement of operations.
 
**Adjusted to an annual basis.
 
 +Total  return is based  on the change  in net asset  value during the periods,
  assumes reinvestment of all distributions and does not reflect a sales charge.
 
++During  the  periods  reflected  above,   the  Adviser  and  the   Distributor
  voluntarily  waived fees and expenses. Had the  Fund paid all expenses and had
  the maximum Rule  12b-1 fee been  in effect,  the ratios of  expenses and  net
  investment  income to average daily net assets would have been: 1.65%/3.21% in
  fiscal  1995,  1.60%/2.75%  in  fiscal  1994,  1.62%/2.83%  in  fiscal   1993,
  1.77%/3.12%  in fiscal 1992, 1.98%/3.49% in fiscal 1991, 1.96%/3.67% in fiscal
  1990, 2.29%/4.16% in fiscal 1989,  2.09%/4.79% in fiscal 1988 and  1.96%/4.09%
  in  fiscal  1987. Beginning  in fiscal  1995, the  expense ratio  reflects the
  effect of gross  expenses paid indirectly  by the Fund.  Prior period  expense
  ratios have not been adjusted.
 
                                       9
<PAGE>
                       INVESTMENT OBJECTIVES AND POLICIES
 
    The investment objectives listed below cannot be changed without shareholder
approval.  The investment  policies and  techniques employed  in pursuit  of the
Funds' objectives may be changed without shareholder approval, unless  otherwise
noted.
 
    Because  of the risks associated with common stock and bond investments, the
Funds are intended to be long-term  investment vehicles and are not designed  to
provide  investors with a  means of speculating  on short-term market movements.
Investors should be  willing to  accept the risk  of the  potential for  sudden,
sometimes  substantial declines in market value.  No assurance can be given that
the Funds will achieve their objectives  or that shareholders will be  protected
from the risk of loss that is inherent in equity and bond market investing.
 
GROWTH FUND
 
    INVESTMENT  OBJECTIVES.    Growth  Fund's  primary  investment  objective is
long-term capital appreciation with secondary  objectives of current income  and
conservation of principal.
 
    INVESTMENT  POLICIES AND TECHNIQUES.   Growth Fund  (formerly known as Value
Fund) will  maintain  a  carefully  selected  portfolio  of  securities  broadly
diversified among industries and companies. The Fund will invest at least 60% of
its total assets in securities of large companies with market capitalizations of
over  $500 million offering,  in the opinion of  the Adviser, long-term earnings
growth, a  cyclical  earnings  rebound  or  above-average  dividend  yield  when
compared  to the S&P 500. Emphasis will  be placed on common stocks of companies
which the Adviser believes  are well managed  with strong business  fundamentals
and  which are  trading at a  discount to  the present value  of their projected
future earnings. Growth Fund may  also invest up to 40%  of its total assets  in
securities of medium ($100-$500 million market capitalization) and smaller sized
(under  $100  million market  capitalization) companies,  some  of which  may be
considered speculative in nature, which the Adviser believes could generate high
levels of  future  revenue and  earnings  growth  and where,  in  the  Adviser's
opinion,  the investment opportunity is not fully  reflected in the price of the
securities.
 
    Growth Fund will invest under normal market conditions not less than 90%  of
its  total assets in common stocks or  securities convertible into or that carry
the right  to buy  common  stocks and  in  repurchase agreements.  See  "Special
Investment  Methods--Repurchase Agreements."  Under unusual  circumstances, as a
defensive measure, Growth  Fund may retain  cash or  invest part or  all of  its
assets  in  short-term  money market  securities  deemed  by the  Adviser  to be
consistent with a temporary defensive posture. In addition, normally up to 5% of
the Fund's total assets will be  held in short-term money market securities  and
cash  to pay  redemption requests and  Fund expenses.  Investments in short-term
money market securities may include obligations  of the U.S. Government and  its
agencies  and instrumentalities,  time deposits,  bank certificates  of deposit,
bankers'  acceptances,  high-grade  commercial  paper  and  other  money  market
instruments.  See  "Investment  Objectives, Policies  and  Restrictions"  in the
Statement of Additional Information.
 
    Growth Fund may  write covered  put and call  options on  the securities  in
which  it  may  invest, purchase  put  and  call options  with  respect  to such
securities, and enter into closing  purchase and sale transactions with  respect
thereto.  Growth Fund may also purchase and  write put and call options on stock
indexes  listed  on  national  securities  exchanges.  See  "Special  Investment
Methods--Options  Transactions." In addition, solely  for the purpose of hedging
against changes in  the value  of its  portfolio securities  due to  anticipated
changes in the market, Growth Fund may enter into stock index futures contracts,
purchase  and  write put  or  call options  on  such contracts,  and  close such
contracts and options.  See "Special Investment  Methods--Futures Contracts  and
Options  on Futures Contracts" and "--Risks of Transactions in Futures Contracts
and Options on Futures Contracts."
 
    INVESTMENT RISKS.  As  a mutual fund investing  primarily in common  stocks,
Growth  Fund is subject to market risk,  i.e., the possibility that stock prices
in general will decline  over short or even  extended periods. The stock  market
tends  to be cyclical, with periods when stock prices generally rise and periods
when stock prices generally decline. The investment techniques used by the  Fund
also pose certain risks. See "Special Investment Methods."
 
                                       10
<PAGE>
EMERGING GROWTH FUND
 
    INVESTMENT  OBJECTIVE.    Emerging  Growth  Fund's  investment  objective is
long-term capital  appreciation. Dividend  and  interest income  from  portfolio
securities, if any, is incidental to the Fund's objective.
 
    INVESTMENT  POLICIES AND TECHNIQUES.  Emerging  Growth Fund seeks to achieve
its objective by  investing, under  normal circumstances,  at least  90% of  its
assets  in  common  stocks  and securities  convertible  into  common  stocks of
companies which the  Adviser believes to  have superior appreciation  potential.
Emerging  Growth Fund invests primarily (i.e., at  least 65% of its assets under
normal market  conditions)  in common  stocks  and securities  convertible  into
common  stocks of small and medium sized  companies that are early in their life
cycles but that have the potential to become major enterprises (emerging  growth
companies).  These companies  generally will have  annual gross  revenues at the
time of purchase ranging from $10 million  to $1 billion, and their shares  will
frequently  be traded in the over-the-counter market. Companies with revenues in
this range typically will have market capitalizations ranging from $250  million
to  $4 billion. The Fund may also invest, however, in more established companies
whose rates of  earnings growth are  expected to accelerate  because of  special
factors  such as  a rejuvenated  management, new  products, changes  in consumer
demand or basic  changes in  the economic  environment, and  in companies  which
appear  to be undervalued in relation to  their long-term earning power or asset
values. Emerging Growth Fund also intends to  invest at least 65% of its  assets
in  common stocks  and securities  convertible into  common stocks  of companies
headquartered or maintaining  offices or manufacturing  facilities in states  in
which the Distributor maintains offices. This will allow the Fund to draw on the
Distributor's   local  expertise  and  research  capabilities.  The  Distributor
currently maintains offices in  Arizona, California, Colorado, Idaho,  Illinois,
Iowa,  Kansas,  Minnesota, Missouri,  Montana, Nebraska,  New Jersey,  New York,
North Dakota, Oregon,  South Dakota,  Utah, Washington,  Wisconsin and  Wyoming;
however, these states may change from time to time.
 
    The  Fund's emphasis on  emerging growth companies  stems from the Adviser's
belief that there are  four broad phases of  corporate growth, with the  fastest
growth  normally occurring  in the  second of these  phases. The  first phase of
corporate growth occurs during the infancy of a company. Investing in a  company
during  this phase of its growth involves high risk, with many companies failing
to survive. During the second phase of a company's growth, sometimes referred to
as the  emerging growth  phase, there  is often  a period  of swift  development
during  which  growth occurs  at a  rate  generally not  equaled by  more mature
companies. There next occurs a third phase of established growth in which growth
is generally  less  dramatic  because of  competitive  forces,  regulations  and
internal  bureaucracy. This is followed by a  fourth phase of maturity, when the
growth pattern of  a company  begins to roughly  reflect the  increase in  gross
national  product. The Adviser  intends to focus on  companies positioned in the
second phase  of growth.  Of  course, the  actual growth  of  a company  is  not
necessarily  consistent with this pattern  and cannot be foreseen. Consequently,
it may be  difficult to  determine the  phase in  which a  company is  currently
situated.
 
                                       11
<PAGE>
    The  following illustration represents the  Adviser's conception of the four
growth phases of a successful business. This graph is presented for illustrative
purposes only, and does not represent the actual growth of a typical company. In
addition, there is  no necessary correlation  between the business  growth of  a
company  and the  market value  of its  stock. This  illustration should  not be
considered a representation of the performance of the common stocks in which the
Fund invests.
 
                                    [CHART]
 
    Under unusual circumstances,  as a defensive  measure, Emerging Growth  Fund
may  retain cash or invest part or all  of its assets in short-term money market
securities deemed by  the Adviser to  be consistent with  a temporary  defensive
posture.  In  addition,  even when  Emerging  Growth Fund  is  "fully invested,"
normally up to 5% of  the Fund's total assets will  be held in short-term  money
market  securities  and  cash  to pay  redemption  requests  and  Fund expenses.
Investments in short-term money market securities may include obligations of the
U.S. Government  and its  agencies and  instrumentalities, time  deposits,  bank
certificates  of deposit, bankers' acceptances,  high-grade commercial paper and
other  money  market  instruments.  See  "Investment  Objectives,  Policies  and
Restrictions"  in the Statement of  Additional Information. Emerging Growth Fund
may  also   enter   into   repurchase  agreements.   See   "Special   Investment
Methods--Repurchase Agreements."
 
    Emerging  Growth  Fund  may  write  covered  put  and  call  options  on the
securities in which it may invest, purchase put and call options with respect to
such securities,  and enter  into closing  purchase and  sale transactions  with
respect  thereto. Emerging Growth Fund may also  purchase and write put and call
options on stock indexes listed  on national securities exchanges. See  "Special
Investment  Methods--Options Transactions." In addition,  solely for the purpose
of hedging  against changes  in the  value of  its portfolio  securities due  to
anticipated  changes in  the market, Emerging  Growth Fund may  enter into stock
index futures  contracts,  purchase  and  write put  or  call  options  on  such
contracts,  and  close  such  contracts  and  options.  See  "Special Investment
Methods--Futures Contracts and  Options on  Futures Contracts"  and "--Risks  of
Transactions in Futures Contracts and Options on Futures Contracts."
 
    INVESTMENT  RISKS.  As  a mutual fund investing  primarily in common stocks,
Emerging Growth Fund is subject to market risk, i.e., the possibility that stock
prices in general will  decline over short or  even extended periods. The  stock
market  tends to be cyclical, with periods  when stock prices generally rise and
periods when stock prices generally decline. In addition, companies in which the
Fund invests also may involve  certain special risks. Emerging growth  companies
may  have limited product lines, markets or financial resources, and they may be
dependent on  a limited  management  group. The  securities of  emerging  growth
companies may have limited market stability and may be subject to more abrupt or
erratic  market movements than securities  of larger, more established companies
or the market  averages in general.  Thus, shares of  Emerging Growth Fund  will
probably  be  subject to  greater fluctuation  in  value than  shares of  a more
conservative equity fund and an investment in the Fund should not be  considered
a  total  investment  plan.  In  addition,  Emerging  Growth  Fund  may  be less
diversified by industry and company than  other funds with a similar  investment
objective  and no geographic  limitation. The investment  techniques used by the
Fund also pose certain risks. See "Special Investment Methods."
 
                                       12
<PAGE>
GROWTH AND INCOME FUND
 
    INVESTMENT OBJECTIVES.  Growth and  Income Fund's investment objectives  are
to provide current income and long-term growth of capital and income.
 
    INVESTMENT  POLICIES AND TECHNIQUES.  Growth and Income Fund will pursue its
investment objectives  by  investing  in  a  broadly  diversified  portfolio  of
securities,  with an emphasis on securities of large, established companies that
have  a  history  of  dividend  payments  and  that  the  Adviser  believes  are
undervalued. Companies will be selected on the basis of the Adviser's assessment
of  their prospects for  long-term growth in  dividends and earnings. Additional
factors which the  Adviser will consider  include the stability  of a  company's
earnings  as well  as the sensitivity  of that company's  particular industry to
fluctuations in major economic variables, such as interest rates and  industrial
production.
 
    Under   normal  market  conditions,  Growth  and  Income  Fund  will  invest
principally in  common stocks  and securities  convertible into  common  stocks.
However,  the Fund may also invest in debt securities, including U.S. Government
securities (securities  issued or  guaranteed  as to  payment of  principal  and
interest  by  the  U.S. Government  or  its agencies  or  instrumentalities) and
nonconvertible preferred  stocks.  Investments  in  long-term  debt  securities,
including debt securities convertible into common stock, will be limited to U.S.
Government  securities and those securities rated at the time of purchase within
the four highest investment grades  assigned by Moody's Investors Service,  Inc.
("Moody's") (Aaa, Aa, A or Baa) or Standard & Poor's Ratings Services ("Standard
&  Poor's") (AAA, AA, A, or BBB), or to unrated securities judged by the Adviser
at the time of purchase to be  of comparable quality. Debt securities rated  Baa
and  BBB  have speculative  characteristics; changes  in economic  conditions or
other circumstances  are more  likely to  lead to  a weakened  capacity to  make
principal and interest payments than is the case with higher grade bonds. In the
event  a security held in Growth and  Income Fund's portfolio is downgraded to a
rating below  Baa or  BBB,  the Fund  will sell  such  security as  promptly  as
practicable.  For an explanation  of Moody's and Standard  & Poor's ratings, see
Appendix  A  to  the  Statement  of  Additional  Information.  U.S.   Government
securities  in which the Fund may invest  include direct obligations of the U.S.
Treasury, such as U.S. Treasury bills, notes and bonds, and obligations of  U.S.
Government   agencies  or  instrumentalities.  Obligations  of  U.S.  Government
agencies or  instrumentalities are  backed in  a  variety of  ways by  the  U.S.
Government or its agencies or instrumentalities. Some of these obligations, such
as  Government  National  Mortgage Association  mortgage-backed  securities, are
backed by  the full  faith and  credit of  the U.S.  Treasury. Others,  such  as
obligations  of the  Federal Home  Loan Banks,  are backed  by the  right of the
issuer to borrow from the  Treasury. Still others, such  as those issued by  the
Federal National Mortgage Association, are backed by the discretionary authority
of  the  U.S.  Government  to  purchase certain  obligations  of  the  agency or
instrumentality. Finally, obligations of other agencies or instrumentalities are
backed only  by  the  credit  of  the  agency  or  instrumentality  issuing  the
obligations.   See   "Investment   Objectives   and   Policies--U.S.  Government
Securities" in the Statement of Additional Information.
 
    Under unusual circumstances, as a defensive measure, Growth and Income  Fund
may  retain cash or invest part or all  of its assets in short-term money market
securities deemed by  the Adviser to  be consistent with  a temporary  defensive
posture.  In addition, normally a small portion  of the Fund's total assets will
be held  in  short-term money  market  securities  and cash  to  pay  redemption
requests  and Fund expenses.  Investments in short-term  money market securities
may  include  obligations  of   the  U.S.  Government   and  its  agencies   and
instrumentalities,   time  deposits,  bank  certificates  of  deposit,  bankers'
acceptances, high-grade commercial paper and other money market instruments. See
"Investment  Objectives,  Policies  and   Restrictions"  in  the  Statement   of
Additional  Information. Growth and  Income Fund may  also enter into repurchase
agreements. See "Special Investment Methods--Repurchase Agreements."
 
    Growth and  Income  Fund may  write  covered put  and  call options  on  the
securities in which it may invest, purchase put and call options with respect to
such  securities, and  enter into  closing purchase  and sale  transactions with
respect thereto. Growth and Income Fund may also purchase and write put and call
options on stock indexes listed  on national securities exchanges. See  "Special
Investment  Methods--Options Transactions." In addition,  solely for the purpose
of hedging  against changes  in the  value of  its portfolio  securities due  to
anticipated  changes in the market, Growth and  Income Fund may enter into stock
index futures contracts and interest rate futures contracts, purchase and  write
put or call options on such contracts,
 
                                       13
<PAGE>
and  close such contracts and  options. See "Special Investment Methods--Futures
Contracts and  Options on  Futures Contracts"  and "--Risks  of Transactions  in
Futures Contracts and Options on Futures Contracts."
 
    Growth and Income Fund may purchase or sell securities on a "when-issued" or
"forward  commitment" basis and may enter  into mortgage "dollar rolls." The use
of these techniques could result in increased volatility of the Fund's net asset
value. See "Special Investment Methods--When-Issued Securities."
 
    INVESTMENT RISKS.  As  a mutual fund investing  primarily in common  stocks,
Growth  and Income Fund  is subject to  market risk, i.e.,  the possibility that
stock prices in general  will decline over short  or even extended periods.  The
stock market tends to be cyclical, with periods when stock prices generally rise
and periods when stock prices generally decline.
 
    Because  Growth and Income Fund also may invest in debt securities, the Fund
may be  subject  to interest  rate  risk as  well.  Bond prices  generally  vary
inversely  with changes  in the  level of interest  rates so  that when interest
rates rise, the prices of bonds fall; conversely, when interest rates fall, bond
prices rise. Investments in debt securities may also subject the Fund to  credit
risk.  Credit risk, also  know as default  risk, is the  possibility that a bond
issuer will fail to make timely payments of interest or principal. As  discussed
above,  the Fund's investments in long-term  debt securities are limited to U.S.
Government securities and securities which, at  the time of purchase, are  rated
investment  grade or are judged by the  Adviser to be of comparable quality. The
investment techniques used  by the Fund  also pose certain  risks. See  "Special
Investment Methods."
 
EQUITY STRATEGY FUND
 
    INVESTMENT  OBJECTIVE.   Equity Strategy  Fund's investment  objective is to
provide a high total investment return consistent with prudent investment risk.
 
    INVESTMENT POLICIES AND TECHNIQUES.  Equity Strategy Fund invests  primarily
(at least 65% of its assets under normal market conditions) in common stocks and
in  securities that  are convertible  into or  that carry  rights to  buy common
stocks of companies representing a number  of different sectors of the  economy.
The  Fund  seeks  to achieve  its  objective  by varying  the  weighting  of its
portfolio among the different sectors. The  sectors in which the Fund  currently
invests are: Basic Energy, Basic Materials, Industrial Manufacturing, Utilities,
Commercial  and  Industrial  Services,  Financial,  Consumer  Staples,  Consumer
Cyclical, Health Care, Technology and  Transportation. For a description of  the
scope  of each  of these industry  sectors, see  Appendix D to  the Statement of
Additional Information.
 
    In selecting investments for  Equity Strategy Fund,  the Adviser intends  to
follow  the  investment  strategies  used by  Piper  Jaffray  in  developing the
MicroGroup Project. The MicroGroup Project divides over 5,300 individual issuers
into over 350 MicroGroups, which are groups of stocks that have similar  trading
patterns  and  whose earnings  or  revenues are  derived  from similar  lines of
business. Stocks of companies  that are broadly diversified  may be included  in
more  than one MicroGroup and possibly in  more than one sector. The MicroGroups
are then  split into  the  eleven broader  economic  sectors listed  above.  For
example,  the Transportation Sector consists  of Airline, Air Freight, Trucking,
Freight Forwarder,  Railroad and  Marine Transportation  MicroGroups.  Divisions
into  sectors and MicroGroups are based upon  the concept that stocks of issuers
engaged in similar operations will respond to market forces in a similar manner.
The number of sectors into which the MicroGroup Project divides the economy  may
change  from time to time,  and Equity Strategy Fund may  invest in any of these
sectors. Equity Strategy Fund may invest up to 25% of its total assets in common
stocks or  securities convertible  into common  stocks that  are deemed  by  the
Adviser  to  have investment  merit  but that  are not  included  in any  of the
MicroGroups. Most typically, a  stock will not be  included in a MicroGroup  for
one  of the following reasons: (a) the  stock is being issued in connection with
an initial public offering and has not yet been placed in a MicroGroup; (b)  the
issuer's  line of business precludes  an ideal fit into  a MicroGroup (e.g., the
issuer is too specialized  or too diversified);  or (c) the stock  is that of  a
foreign  issuer. (No more  than 5% of  the total assets  of Equity Strategy Fund
will be invested in the securities of foreign issuers.)
 
    In response to  changes or anticipated  changes in the  general economy  and
within  one  or  more particular  industry  sectors, the  Adviser  may increase,
decrease or  eliminate  entirely a  particular  sector's representation  in  the
Fund's  portfolio, which  may result  in a  higher portfolio  turnover rate than
experienced by other equity  funds. Sector and  MicroGroup selections are  based
upon both fundamental factors (e.g., economic and
 
                                       14
<PAGE>
interest  rate sensitivity) and  technical factors (e.g.,  whether the sector or
MicroGroup appears to be under  accumulation or distribution) and upon  relative
strength  considerations (whether the  sector or MicroGroup  is outperforming or
underperforming the market). Component companies of selected MicroGroups are  in
turn evaluated based upon fundamental earnings developments, financial condition
and technical considerations. As a result of adhering to these principles, it is
anticipated   that  Equity  Strategy  Fund  will   invest  in  both  large-  and
small-capitalization issues,  some of  which may  be considered  speculative  in
nature.
 
    From  time to time,  for temporary defensive  purposes, Equity Strategy Fund
may retain cash or invest part or  all of its assets in short-term money  market
securities  deemed by  the Adviser to  be consistent with  a temporary defensive
posture. In  addition,  even when  Equity  Strategy Fund  is  "fully  invested,"
normally  up to 5% of  the Fund's total assets will  be held in short-term money
market securities  and  cash, to  pay  redemption requests  and  Fund  expenses.
Investments in short-term money market securities may include obligations of the
U.S.  Government  and its  agencies and  instrumentalities, time  deposits, bank
certificates of deposit, bankers'  acceptances, high-grade commercial paper  and
other  money  market  instruments.  See  "Investment  Objectives,  Policies  and
Restrictions" in the Statement of  Additional Information. Equity Strategy  Fund
may   also   enter   into  repurchase   agreements.   See   "Special  Investment
Methods--Repurchase Agreements."
 
    Equity Strategy  Fund  may  write  covered  put  and  call  options  on  the
securities in which it may invest, purchase put and call options with respect to
such  securities, and  enter into  closing purchase  and sale  transactions with
respect thereto. Equity Strategy Fund may  also purchase and write put and  call
options  on stock indexes listed on  national securities exchanges. See "Special
Investment Methods--Options Transactions." In  addition, solely for the  purpose
of  hedging against  changes in  the value  of its  portfolio securities  due to
anticipated changes in  the market, Equity  Strategy Fund may  enter into  stock
index  futures  contracts,  purchase  and  write put  or  call  options  on such
contracts, and  close  such  contracts  and  options.  See  "Special  Investment
Methods--Futures  Contracts and  Options on  Futures Contracts"  and "--Risks of
Transactions in  Futures Contracts  and Options  on Futures  Contracts."  Equity
Strategy  Fund may also make short  sales of securities. See "Special Investment
Methods--Short Sales."
 
    INVESTMENT RISKS.  As  a mutual fund investing  primarily in common  stocks,
Equity Strategy Fund is subject to market risk, i.e., the possibility that stock
prices  in general will decline  over short or even  extended periods. The stock
market tends to be cyclical, with  periods when stock prices generally rise  and
periods  when stock prices generally decline. The investment results of the Fund
will also depend upon the Adviser's ability to anticipate correctly the relative
performance of various  industry sectors.  The Fund's  investment results  would
suffer,  for example, if none or only a  small portion of the Fund's assets were
allocated to a  particular sector during  a significant market  advance in  that
sector,  or if  a major  portion of  its assets  were allocated  to a particular
sector during a market decline in that sector. The Adviser's strategy may result
in the Fund  investing in both  large and small  capitalization issues, some  of
which may be considered speculative in nature. The investment techniques used by
the Fund also pose certain risks. See "Special Investment Methods."
 
BALANCED FUND
 
    INVESTMENT  OBJECTIVES.   Balanced  Fund has  investment objectives  of both
current income and long-term  capital appreciation consistent with  conservation
of principal.
 
    INVESTMENT  POLICIES  AND TECHNIQUES.   It  is intended  that the  assets of
Balanced Fund will be invested on the basis of combined considerations of  risk,
income,  capital  appreciation and  protection of  capital  value. The  Fund may
invest in any type  or class of securities,  including money market  securities,
fixed-income  securities, such as  bonds, debentures, preferred  stocks and U.S.
Government  securities  (securities  issued  or  guaranteed  as  to  payment  of
principal   and   interest  by   the  U.S.   Government   or  its   agencies  or
instrumentalities), senior securities convertible into common stocks and  common
stocks. The Fund may invest up to 25% of its total assets in foreign securities.
See  "Special Investment  Methods--Foreign Securities."  Balanced Fund  may also
enter into repurchase  agreements. See  "Special Investment  Methods--Repurchase
Agreements." The mix of securities in the Fund's portfolio will be determined on
the  basis  of existing  and  anticipated market  conditions.  Consequently, the
relative percentages of each type of  security in the portfolio may be  expected
to fluctuate. At least 35% of the Fund's total assets, however, must be invested
in fixed-income
 
                                       15
<PAGE>
securities.  To pay redemption requests and Fund  expenses, normally up to 5% of
the Fund's total assets will be  held in short-term money market securities  and
cash.
 
    Investments  in long-term debt securities will be limited to U.S. Government
securities and to those securities rated at the time of purchase within the four
highest investment grades assigned by Moody's (Aaa, Aa, A or Baa) or Standard  &
Poor's  (AAA, AA, A or  BBB) or unrated securities judged  by the Adviser at the
time of purchase to be of comparable quality. Debt securities rated Baa and  BBB
have  speculative  characteristics;  changes  in  economic  conditions  or other
circumstances are more likely to lead  to a weakened capacity to make  principal
and  interest payments than is the case with  higher grade bonds. In the event a
security held in Balanced Fund's portfolio  is downgraded to a rating below  Baa
or  BBB, the  Fund will sell  such security  as promptly as  practicable. For an
explanation of Moody's  and Standard  & Poor's ratings,  see Appendix  A to  the
Statement  of Additional  Information. Not more  than 20% of  the long-term debt
securities held  at  any  one  time  by Balanced  Fund  will  be  unrated.  U.S.
Government securities in which the Fund may invest include direct obligations of
the U.S. Treasury, such as U.S. Treasury bills, notes and bonds, and obligations
of U.S. Government agencies or instrumentalities. Obligations of U.S. Government
agencies  or  instrumentalities are  backed in  a  variety of  ways by  the U.S.
Government or its agencies or instrumentalities. Some of these obligations, such
as Government  National  Mortgage Association  mortgage-backed  securities,  are
backed  by  the full  faith and  credit of  the U.S.  Treasury. Others,  such as
obligations of the  Federal Home  Loan Banks,  are backed  by the  right of  the
issuer  to borrow from the  Treasury. Still others, such  as those issued by the
Federal National Mortgage Association, are backed by the discretionary authority
of the  U.S.  Government  to  purchase certain  obligations  of  the  agency  or
instrumentality. Finally, obligations of other agencies or instrumentalities are
backed  only  by  the  credit  of  the  agency  or  instrumentality  issuing the
obligations. The Fund may invest in mortgage-related U.S. Government securities,
including derivative  mortgage securities.  Recent market  experience has  shown
that  certain  derivative  mortgage  securities may  be  extremely  sensitive to
changes in interest  rates and in  prepayment rates on  the underlying  mortgage
assets and, as a result, may be highly volatile. However, Balanced Fund will not
invest  more than 5% of its net assets, in the aggregate, in the following types
of derivative mortgage  securities: inverse floaters,  interest only,  principal
only,   inverse  interest  only  and   Z  tranches  of  collateralized  mortgage
obligations, and stripped mortgage-backed securities. See "Investment Objectives
and  Policies--U.S.  Government  Securities"  in  the  Statement  of  Additional
Information.  Investments  in  short-term money  market  securities  may include
obligations of the U.S. Government and its agencies and instrumentalities,  time
deposits,   bank  certificates  of  deposit,  bankers'  acceptances,  high-grade
commercial paper and other money market instruments. See "Investment Objectives,
Policies and Restrictions" in the Statement of Additional Information.
 
    Balanced Fund may write  covered put and call  options on the securities  in
which  it  may  invest, purchase  put  and  call options  with  respect  to such
securities, and enter into closing  purchase and sale transactions with  respect
thereto. Balanced Fund may also purchase and write put and call options on stock
indexes  listed  on  national  securities  exchanges.  See  "Special  Investment
Methods--Options Transactions." In addition, solely  for the purpose of  hedging
against  changes in  the value  of its  portfolio securities  due to anticipated
changes in the market and in interest rates, Balanced Fund may enter into  stock
index  futures contracts and interest rate futures contracts, purchase and write
put or call options on such contracts, and close such contracts and options. See
"Special Investment Methods--Futures Contracts and Options on Futures Contracts"
and "--Risks  of  Transactions  in  Futures Contracts  and  Options  on  Futures
Contracts."
 
    Balanced  Fund may  purchase or  securities on  a "when-issued"  or "forward
commitment" basis and may enter into  mortgage "dollar rolls." The use of  these
techniques  could result in increased volatility  of the Fund's net asset value.
See "Special Investment Methods--When-Issued Securities."
 
    EFFECTIVE DURATION.  In managing the fixed income portion of Balanced Fund's
portfolio, the Adviser will attempt to maintain an average effective duration of
3 to 6  1/2 years. Effective  duration estimates the  interest rate risk  (price
volatility)  of a security, I.E., how much the value of the security is expected
to change  with  a given  change  in interest  rates.  The longer  a  security's
effective  duration,  the more  sensitive its  price is  to changes  in interest
rates. For example, if interest rates were  to increase by 1%, the market  value
of  a bond with an effective duration of  five years would decrease by about 5%,
with all other factors being constant.
 
                                       16
<PAGE>
    It  is important  to understand  that, while  a valuable  measure, effective
duration is based on certain assumptions and has several limitations. It is most
useful as a measure of interest rate risk when interest rate changes are  small,
rapid  and occur equally across all the  different points of the yield curve. In
addition, effective duration is difficult to calculate precisely for bonds  with
prepayment  options, such as mortgage-backed securities, because the calculation
requires assumptions about prepayment rates. For example, when interest rates go
down, homeowners may prepay their mortgages at a higher rate than assumed in the
initial  effective  duration  calculation,  thereby  shortening  the   effective
duration   of  the  Fund's  mortgage-backed  securities.  Conversely,  if  rates
increase, prepayments may decrease to  a greater extent than assumed,  extending
the  effective duration  of such  securities. For  these reasons,  the effective
durations of  funds  which invest  a  significant  portion of  their  assets  in
mortgage-backed securities can be greatly affected by changes in interest rates.
 
    INVESTMENT  RISKS.  The Fund may invest  in any type or class of securities,
including money market securities, fixed-income securities and common stocks. As
a result, investors  in the Fund  will be exposed  to the market  risks of  both
common  stocks and bonds. Stock market risk is the possibility that stock prices
in general will decline  over short or even  extended periods. The stock  market
tends  to be cyclical, with periods when stock prices generally rise and periods
when stock  prices generally  decline. Bond  market risk  is the  potential  for
fluctuations  in  the market  value of  bonds. Bond  prices vary  inversely with
changes in the level of interest rates. When interest rates rise, the prices  of
bonds fall; conversely, when interest rates fall, bond prices rise.
 
    To the extent the Fund invests in mortgage-related securities, the Fund will
also be subject to prepayment risk. Prepayment risk results because, as interest
rates  fall, homeowners are more likely  to refinance their home mortgages. When
home mortgages are refinanced, the principal on mortgage-related securities held
by the Fund is "prepaid" earlier than expected. The Fund must then reinvest  the
unanticipated  principal payments,  just at  a time  when interest  rates on new
mortgage investments are falling. Prepayment  risk has two important effects  on
the Fund:
 
    - When  interest  rates fall  and  additional mortgage  prepayments  must be
      reinvested at  lower  interest rates,  the  income  of the  Fund  will  be
      reduced.
 
    - When  interest rates  fall, prices  on mortgage-backed  securities may not
      rise as much as  comparable Treasury bonds  because bond market  investors
      may anticipate an increase in mortgage prepayments and a likely decline in
      income.
 
    Balanced  Fund's investments in mortgage-related securities also subject the
Fund to extension risk. Extension risk  is the possibility that rising  interest
rates  may  cause prepayments  to occur  at  a slower  than expected  rate. This
particular risk may effectively change a security which was considered short- or
intermediate-duration at the  time of  purchase into  a long-duration  security.
Long-duration  securities generally fluctuate more widely in response to changes
in interest rates than short- or intermediate-duration securities.
 
    Investments in debt  securities may also  subject the Fund  to credit  risk.
Credit  risk, also known as default risk,  is the possibility that a bond issuer
will fail to make timely payments of interest or principal. As discussed  above,
the  Fund's  investments  in  long-term  debt  securities  are  limited  to U.S.
Government securities and securities which, at  the time of purchase, are  rated
investment  grade or are judged by the  Adviser to be of comparable quality. The
investment techniques used by the  Fund and the Fund's  ability to invest up  to
25%  of its  total assets  in foreign  securities also  pose certain  risks. See
"Special Investment Methods."
 
    Investors should  also be  aware that  the investment  results of  the  Fund
depend   upon  the  Adviser's  ability  to  anticipate  correctly  the  relative
performance and risks of stocks, bonds and money market instruments. The  Fund's
investment  results would suffer,  for example, if  only a small  portion of the
Fund's assets were invested in stocks during a significant market advance, or if
a major portion of its assets were  invested in stocks during a market  decline.
Similarly,   the  Fund's  performance   could  deteriorate  if   the  Fund  were
substantially invested in bonds at a time when interest rates moved adversely.
 
                                       17
<PAGE>
                           SPECIAL INVESTMENT METHODS
 
REPURCHASE AGREEMENTS
 
    Each Fund may enter  into repurchase agreements  with respect to  securities
issued  or  guaranteed as  to  payment of  principal  and interest  by  the U.S.
Government or its agencies or instrumentalities. A repurchase agreement involves
the purchase by  a Fund of  securities with  the condition that  after a  stated
period  of time the original seller (a member bank of the Federal Reserve System
or  a  recognized  securities  dealer)   will  buy  back  the  same   securities
("collateral")  at a predetermined price or yield. Repurchase agreements involve
certain risks not associated with direct investments in securities. In the event
the original seller defaults on its obligation to repurchase, as a result of its
bankruptcy or otherwise, the Fund will seek to sell the collateral, which action
could involve costs or delays.  In such case, the  Fund's ability to dispose  of
the  collateral to recover  such investment may be  restricted or delayed. While
collateral will at all times be maintained in an amount equal to the  repurchase
price  under the agreement  (including accrued interest  due thereunder), to the
extent proceeds from the sale of collateral were less than the repurchase price,
a Fund would suffer  a loss. Repurchase agreements  maturing in more than  seven
days are considered illiquid and subject to each Fund's restriction on investing
in illiquid securities.
 
LENDING OF PORTFOLIO SECURITIES
 
    In  order  to  generate  additional income,  each  Fund  may  lend portfolio
securities up to one-third of the  value of its total assets to  broker-dealers,
banks  or other financial  borrowers of securities. As  with other extensions of
credit, there are  risks of  delay in  recovery or even  loss of  rights in  the
collateral  should the borrower of the securities fail financially. However, the
Funds will only enter into loan arrangements with broker-dealers, banks or other
institutions which the Adviser has determined are creditworthy under  guidelines
established  by the Company's Board of  Directors and will receive collateral in
the  form  of  cash,  U.S.  Government  securities  or  other  high-grade   debt
obligations  equal to at least  100% of the value  of the securities loaned. The
value of the collateral and of the securities loaned will be marked to market on
a daily basis. During  the time portfolio securities  are on loan, the  borrower
pays  the Fund  an amount equivalent  to any  dividends or interest  paid on the
securities and  the Fund  may invest  the cash  collateral and  earn  additional
income  or  may  receive an  agreed  upon  amount of  interest  income  from the
borrower. However, the amounts received by  the Fund may be reduced by  finders'
fees paid to broker-dealers and related expenses.
 
BORROWING
 
    Each Fund may borrow money from banks for temporary or emergency purposes in
an  amount up to 10% of the value of the Fund's total assets. Interest paid by a
Fund on borrowed funds would decrease the net earnings of that Fund. None of the
Funds will  purchase portfolio  securities while  outstanding borrowings  (other
than  reverse repurchase agreements) exceed 5% of  the value of the Fund's total
assets. Each Fund may  mortgage, pledge or hypothecate  its assets in an  amount
not  exceeding  10% of  the value  of its  total assets  to secure  temporary or
emergency borrowing. The policies  set forth in  this paragraph are  fundamental
and may not be changed without the approval of a majority of a Fund's shares.
 
OPTIONS TRANSACTIONS
 
    WRITING  COVERED OPTIONS.  Each Fund may  write (i.e., sell) covered put and
call options with respect to the securities in which they may invest. By writing
a call option, a Fund becomes obligated during the term of the option to deliver
the securities underlying the option upon  payment of the exercise price if  the
option  is exercised. By writing  a put option, a  Fund becomes obligated during
the term of the option to purchase  the securities underlying the option at  the
exercise  price if the option is exercised.  With respect to put options written
by any Fund,  there will have  been a predetermination  that acquisition of  the
underlying security is in accordance with the investment objective of such Fund.
 
    The  principal reason for writing call or  put options is to obtain, through
the receipt of premiums, a greater current return than would be realized on  the
underlying securities alone. The Funds receive premiums from writing call or put
options,  which they retain whether or not the options are exercised. By writing
a call  option, a  Fund might  lose the  potential for  gain on  the  underlying
security while the option is open,
 
                                       18
<PAGE>
and  by  writing a  put option  a Fund  might become  obligated to  purchase the
underlying security for more than its current market price upon exercise.
 
    For Growth Fund, Emerging Growth Fund,  Growth and Income Fund and  Balanced
Fund,  the aggregate value of the  securities or other collateral underlying the
calls and obligations underlying  the puts written by  a Fund, determined as  of
the  date the options  are sold, will not  exceed 25% of the  net assets of such
Fund. For Equity Strategy Fund, the  aggregate value of the securities or  other
collateral  underlying the puts written  by the Fund, determined  as of the date
the options are  sold, will  not exceed  50% of  the Fund's  net assets.  Equity
Strategy Fund may write covered call options without limit.
 
    PURCHASING  OPTIONS.  Each Fund may purchase put options, solely for hedging
purposes, in  order to  protect  portfolio holdings  in an  underlying  security
against  a substantial decline in the market value of such holdings ("protective
puts"). Such protection is provided  during the life of  the put because a  Fund
may  sell the  underlying security  at the put  exercise price,  regardless of a
decline in the underlying security's market price. Any loss to a Fund is limited
to the premium paid for, and transaction costs paid in connection with, the  put
plus  the initial excess, if any, of the market price of the underlying security
over the  exercise  price.  However,  if  the  market  price  of  such  security
increases,  the  profit a  Fund realizes  on the  sale of  the security  will be
reduced by the premium paid for the put option less any amount for which the put
is sold.
 
    Each Fund may also purchase call  options solely for the purpose of  hedging
against  an increase in prices  of securities that the  Fund ultimately wants to
buy. Such protection is provided during the life of the call option because  the
Fund  may buy the underlying  security at the call  exercise price regardless of
any increase in  the underlying  security's market price.  In order  for a  call
option  to be profitable, the market price  of the underlying security must rise
sufficiently above  the exercise  price  to cover  the premium  and  transaction
costs.  By using call options  in this manner, a Fund  will reduce any profit it
might have  realized  had it  bought  the underlying  security  at the  time  it
purchased  the  call option  by  the premium  paid for  the  call option  and by
transaction costs.
 
    The Funds may purchase and write only exchange-traded put and call options.
 
    STOCK INDEX OPTION TRADING.  The Funds  may purchase and write put and  call
options  on stock indexes  listed on national  securities exchanges. Stock index
options will be  purchased for  the purpose of  hedging against  changes in  the
value of a Fund's portfolio securities due to anticipated changes in the market.
Stock  index options will be written for  hedging purposes and to realize income
from the premiums received on the sale of such options. Options on stock indexes
are similar to options on  stock except that, rather than  the right to take  or
make  delivery of stock at  a specified price, an option  on a stock index gives
the holder the right to receive, upon exercise of the option, an amount of  cash
if  the closing  level of  the stock  index upon  which the  option is  based is
greater than, in the case  of a call, or  less than, in the  case of a put,  the
exercise  price of  the option. The  writer of  the option is  obligated to make
delivery of this amount. The value of  a stock index fluctuates with changes  in
the  market values of  the stocks included  in the index.  The index may include
stocks representative of the entire market, such as the S&P 500, or may  include
only stocks in a particular industry or market segment, such as the AMEX Oil and
Gas  Index. The effectiveness of purchasing or  writing stock index options as a
hedging technique depends upon the extent  to which price movements in a  Fund's
portfolio correlate with price movements of the stock index selected.
 
    For  further information concerning the characteristics and risks of options
transactions, see "Investment Objectives, Policies and Restrictions--Options" in
the Statement of Additional Information.
 
FUTURES CONTRACTS AND OPTIONS ON FUTURES CONTRACTS
 
    Each Fund may purchase  and sell interest  rate futures contracts.  Balanced
Fund and Growth and Income Fund also may purchase and sell interest rate futures
contracts.  The  futures  contracts in  which  the  Funds may  invest  have been
developed by and are traded on national commodity exchanges. Stock index futures
contracts may be based  upon broad-based stock  indexes such as  the S&P 500  or
upon  narrow-based stock  indexes. A buyer  entering into a  stock index futures
contract will, on a specified future date,  pay or receive a final cash  payment
equal  to the difference between the actual value of the stock index on the last
day of  the  contract and  the  value of  the  stock index  established  by  the
contract.  An interest rate futures contract is an agreement to purchase or sell
an agreed amount  of debt securities  at a set  price for delivery  on a  future
date.
 
                                       19
<PAGE>
    The purpose of the acquisition or sale of a futures contract by a Fund is to
hedge against fluctuations in the value of its portfolio without actually buying
or  selling securities.  For example, if  a Fund owns  long-term U.S. Government
securities and interest  rates are  expected to  increase, the  Fund might  sell
futures  contracts.  If  interest rates  did  increase,  the value  of  the U.S.
Government securities in the  Fund's portfolio would decline,  but the value  of
the  Fund's futures  contracts would  increase at  approximately the  same rate,
thereby keeping the net  asset value of  the Fund from declining  as much as  it
otherwise  would have. If,  on the other  hand, the Fund  held cash reserves and
short-term investments pending anticipated  investment in long-term  obligations
and  interest rates  were expected to  decline, the Fund  might purchase futures
contracts for U.S. Government securities.  Since the behavior of such  contracts
would  generally be similar to that of long-term securities, the Fund could take
advantage of the anticipated rise in  the value of long-term securities  without
actually  buying them until  the market had  stabilized. At that  time, the Fund
could accept delivery under the futures contracts or the futures contracts could
be liquidated  and the  Fund's reserves  could  then be  used to  buy  long-term
securities  in the cash market. The Funds  will engage in such transactions only
for hedging purposes, on  either an asset-based or  a liability-based basis,  in
each  case in accordance with the rules and regulations of the Commodity Futures
Trading Commission. See Appendix B and Appendix C to the Statement of Additional
Information.
 
    Each Fund may purchase  and sell put and  call options on futures  contracts
and  enter into closing  transactions with respect to  such options to terminate
existing positions.  The Funds  may use  such options  on futures  contracts  in
connection  with  their hedging  strategies in  lieu  of purchasing  and writing
options directly  on the  underlying securities  or purchasing  and selling  the
underlying futures contracts.
 
    There  are risks in using futures contracts and options on futures contracts
as hedging  devices.  The primary  risks  associated  with the  use  of  futures
contracts  and  options thereon  are  (a) the  prices  of futures  contracts and
options may not  correlate perfectly  with the  market value  of the  securities
subject  to the hedge and (b) the possible lack of a liquid secondary market for
a futures contract and the resulting inability to close a futures position prior
to its maturity date. With respect to stock index futures contracts, the risk of
imperfect correlation  increases  as  the  composition  of  a  Fund's  portfolio
diverges from the securities included in the applicable stock index. The Adviser
will  attempt to  reduce this  risk, to  the extent  possible, by  entering into
futures contracts on indexes whose movements it believes will have a significant
correlation with  movements in  the  value of  the Fund's  portfolio  securities
sought  to be hedged. The risk that a Fund will be unable to close out a futures
position will be  minimized by  entering into  such transactions  on a  national
exchange with an active and liquid secondary market.
 
    Additional information with respect to interest rate and stock index futures
contracts, together with information regarding options on such contracts, is set
forth in Appendix B and Appendix C, respectively, to the Statement of Additional
Information.
 
WHEN-ISSUED SECURITIES
 
    Balanced  Fund  and Growth  and  Income Fund  may  purchase securities  on a
"when-issued"  basis  and  may  purchase  or  sell  securities  on  a   "forward
commitment"  basis. When such transactions are negotiated, the price is fixed at
the time the  commitment is made,  but delivery and  payment for the  securities
take  place at a  later date. The Funds  will not accrue  income with respect to
when-issued or  forward commitment  securities prior  to their  stated  delivery
date.  Pending delivery of  the securities, each Fund  maintains in a segregated
account cash or liquid  high-grade debt obligations in  an amount sufficient  to
meet its purchase commitments.
 
    The  purchase of  securities on  a when-issued  or forward  commitment basis
exposes the Funds to risk because the securities may decrease in value prior  to
their  delivery. Purchasing  securities on  a when-issued  or forward commitment
basis involves the additional risk that the return available in the market  when
the  delivery takes place will  be higher than that  obtained in the transaction
itself. A Fund's purchase of securities  on a when-issued or forward  commitment
basis  while remaining substantially fully invested  increases the amount of the
Fund's assets that are subject to market risk to an amount that is greater  than
the  Fund's net asset value,  which could result in  increased volatility of the
price of the  Fund's shares. For  additional information concerning  when-issued
and  forward commitment  transactions, see "Investment  Objectives, Policies and
Restrictions" in the Statement of Additional Information.
 
                                       20
<PAGE>
MORTGAGE DOLLAR ROLLS
 
    In connection with their ability to purchase securities on a when-issued  or
forward  commitment basis,  Balanced Fund and  Growth and Income  Fund may enter
into mortgage "dollar rolls"  in which a Fund  sells securities for delivery  in
the  current month  and simultaneously contracts  with the  same counterparty to
repurchase similar (same type, coupon and maturity) but not identical securities
on a specified future date. The Fund gives up the right to receive principal and
interest paid on  the securities sold.  However, the Fund  would benefit to  the
extent  of any difference between the price received for the securities sold and
the lower forward price  for the future purchase  plus any fee income  received.
Unless  such benefits exceed  the income, capital appreciation  and gain or loss
due to mortgage prepayments that would have been realized on the securities sold
as part of the mortgage dollar roll, the use of this technique will diminish the
investment performance of  the Fund  compared with what  such performance  would
have  been without  the use of  mortgage dollar  rolls. Each Fund  will hold and
maintain in  a segregated  account  until the  settlement  date cash  or  liquid
high-grade debt securities in an amount equal to the forward purchase price. The
benefits  derived from  the use  of mortgage  dollar rolls  may depend  upon the
Adviser's ability to predict correctly mortgage prepayments and interest  rates.
There  is no assurance that mortgage  dollar rolls can be successfully employed.
In addition,  the  use  of mortgage  dollar  rolls  by a  Fund  while  remaining
substantially  fully invested increases the amount of the Fund's assets that are
subject to market risk to  an amount that is greater  than the Fund's net  asset
value,  which could result  in increased volatility  of the price  of the Fund's
shares.
 
    For financial reporting and  tax purposes, the  Funds treat mortgage  dollar
rolls as two separate transactions: one involving the purchase of a security and
a  separate transaction involving a  sale. The Funds do  not currently intend to
enter into mortgage dollar rolls that are accounted for as a financing.
 
    No more than  one-third of a  Fund's total  assets may be  committed to  the
purchase  of securities on a when-issued  or forward commitment basis, including
mortgage dollar roll purchases.
 
SHORT SALES
 
    Equity Strategy Fund may make short  sales, which are transactions in  which
the  Fund sells a security it  does not own in anticipation  of a decline in the
market value of that security. To  complete such a transaction, Equity  Strategy
Fund  must borrow the security  to make delivery to the  buyer. The Fund then is
obligated to replace the security borrowed by purchasing it at the market  price
at  the time of replacement. The price at such time may be more or less than the
price at  which  the security  was  sold by  the  Fund. Until  the  security  is
replaced,  the Fund is required  to pay to the  lender any dividends or interest
which accrue  during the  period of  the loan.  To borrow  the security,  Equity
Strategy  Fund also may be  required to pay a  premium, which would increase the
cost of the securities sold. The proceeds of the short sale will be retained  by
the broker, to the extent necessary to meet margin requirements, until the short
position is closed out.
 
    Equity  Strategy Fund will incur a loss as a result of the short sale if the
price of the security increases between the date of the short sale and the  date
on  which the  Fund replaces  the borrowed  security. Equity  Strategy Fund will
realize a gain if the security declines in price between those dates. The amount
of any gain  will be decreased,  and the amount  of any loss  increased, by  the
amount  of  any  premium, dividends  or  interest  Equity Strategy  Fund  may be
required to pay in connection with the short sale.
 
    No securities will be sold short if, after effect is given to any such short
sale, the total market value of all securities sold short would exceed 5% of the
value of the Fund's total  assets. In addition, the  value of the securities  of
any one issuer in which Equity Strategy Fund is short will not exceed the lesser
of 2% of the value of the Fund's net assets or 2% of the securities of any class
of  any issuer.  Equity Strategy  Fund will make  short sales  (other than short
sales "against the  box," as  discussed below) only  of securities  listed on  a
national securities exchange.
 
    In  addition to  the short sales  discussed above, Equity  Strategy Fund may
also make  short sales  "against the  box"  of securities  or maintain  a  short
position, provided that at all times when a short position is open the Fund owns
an   equal  amount  of  such  securities   or  securities  convertible  into  or
exchangeable, without payment  of any further  consideration, for securities  of
the  same issue as, and equal in amount  to, the securities sold short. Not more
than 50% of the Fund's total assets  (determined at the time of the short  sale)
 
                                       21
<PAGE>
may  be held  as collateral  for such  sales. Such  sales will  be made  for the
purpose of hedging against an anticipated decline in the underlying securities.
 
ILLIQUID SECURITIES
 
    As a nonfundamental investment restriction that  may be changed at any  time
without  shareholder approval,  no Fund  will invest  more than  15% of  its net
assets in illiquid securities. A security is considered illiquid if it cannot be
sold in the ordinary course of  business within seven days at approximately  the
price  at which it is valued. Illiquid  securities may offer a higher yield than
securities which  are  more readily  marketable,  but  they may  not  always  be
marketable on advantageous terms.
 
    The  sale of  illiquid securities  often requires  more time  and results in
higher brokerage charges  or dealer  discounts and other  selling expenses  than
does  the  sale  of  securities  eligible  for  trading  on  national securities
exchanges or in the  over-the-counter markets. A Fund  may be restricted in  its
ability to sell such securities at a time when the Adviser deems it advisable to
do  so. In addition,  in order to meet  redemption requests, a  Fund may have to
sell other assets, rather than such illiquid securities, at a time which is  not
advantageous.
 
    "Restricted securities" are securities which were originally sold in private
placements  and which have not been registered  under the Securities Act of 1933
(the "1933 Act"). Such securities generally have been considered illiquid, since
they may  be resold  only subject  to statutory  restrictions and  delays or  if
registered  under the  1933 Act. In  1990, however, the  Securities and Exchange
Commission adopted Rule 144A  under the 1933 Act,  which provides a safe  harbor
exemption  from the  registration requirements  of the  1933 Act  for resales of
restricted securities to  "qualified institutional  buyers," as  defined in  the
rule.  The result  of this rule  has been the  development of a  more liquid and
efficient  institutional  resale   market  for   restricted  securities.   Thus,
restricted  securities  are  no  longer  necessarily  illiquid.  The  Funds  may
therefore invest in Rule 144A securities and treat them as liquid when they have
been determined to be liquid by the Board of Directors of the Company or by  the
Adviser  subject to the oversight  of and pursuant to  procedures adopted by the
Board   of    Directors.    See    "Investment    Objectives,    Policies    and
Restrictions--Illiquid  Securities" in the  Statement of Additional Information.
Similar determinations may be  made with respect to  commercial paper issued  in
reliance  on the so-called "private placement" exemption from registration under
Section 4(2) of the  1933 Act and  with respect to IO,  PO and inverse  floating
classes  of  mortgage-backed securities  issued by  the  U.S. Government  or its
agencies and instrumentalities.
 
FOREIGN SECURITIES
 
    As nonfundamental investment  objectives which  may be changed  at any  time
without  shareholder approval, Balanced Fund  may invest up to  25% of its total
assets in foreign securities and each of the other Funds may invest up to 5%  of
its total assets in such securities. The value of foreign securities investments
may  be affected by  changes in currency rates  or exchange control regulations,
changes in governmental administration or  economic or monetary policy (in  this
country  or abroad) or changed circumstances  in dealings between nations. Costs
may be  incurred  in connection  with  conversions between  various  currencies.
Moreover, there may be less publicly available information about foreign issuers
than  about  domestic  issuers,  and  foreign  issuers  may  not  be  subject to
accounting,  auditing  and  financial   reporting  standards  and   requirements
comparable  to those of domestic issuers. Securities of some foreign issuers are
less liquid and more volatile than securities of comparable domestic issuers and
foreign brokerage commissions are  generally higher than  in the United  States.
Foreign  securities  markets may  also be  less liquid,  more volatile  and less
subject to  government supervision  than in  the United  States. Investments  in
foreign  countries could be affected by other  factors not present in the United
States,   including   expropriation,   confiscatory   taxation   and   potential
difficulties  in  enforcing  contractual  obligations and  could  be  subject to
extended settlement periods.
 
    In addition, as  a result of  their investments in  foreign securities,  the
Funds  may receive interest or dividend payments, or the proceeds of the sale or
redemption  of  such  securities,  in  the  foreign  currencies  in  which  such
securities  are  denominated. Under  certain  circumstances, such  as  where the
Adviser believes that the  applicable exchange rate is  unfavorable at the  time
the  currencies are received  or the Adviser anticipates,  for any other reason,
that the exchange rate will improve, the  Funds may hold such currencies for  an
indefinite period of time. While the holding of currencies will permit the Funds
to  take advantage of favorable movements  in the applicable exchange rate, such
strategy also exposes the Funds to risk of loss if
 
                                       22
<PAGE>
exchange rates move  in a direction  adverse to a  Fund's position. Such  losses
could  reduce any profits or increase any losses sustained by the Funds from the
sale or redemption of securities, and could reduce the dollar value of  interest
or dividend payments received.
 
PORTFOLIO TURNOVER
 
    Equity  Strategy  Fund may  engage in  short-term  trading in  attempting to
achieve its investment objective. It may be expected that a substantial  portion
of Equity Strategy Fund's portfolio will at times consist of securities believed
to  have  potential  primarily for  short-term  gains.  The Fund  may  also take
short-term  gains  on  securities  originally  purchased  for  their   long-term
potential  should the price  objective be achieved  earlier than anticipated, or
sell securities where the Adviser believes that growth is no longer feasible  or
that the risk of market decline is too great. Since Equity Strategy Fund engages
in  short-term trading,  it pays greater  brokerage commission  costs or mark-up
charges. High portfolio  turnover also  may increase  short-term capital  gains,
which are taxable as ordinary income when distributed to shareholders.
 
    While  it is not the policy of any  of the remaining Funds to trade actively
for short-term profits, each Fund will  dispose of securities without regard  to
the  time they have been held when such action appears advisable to the Adviser.
In the case of each  Fund, frequent changes may  result in higher brokerage  and
other  costs for the Fund. The method  of calculating portfolio turnover rate is
set  forth  in  the  Statement  of  Additional  Information  under   "Investment
Objectives,  Policies and Restrictions--Portfolio  Turnover." Portfolio turnover
rates for the Funds are set forth in "Financial Highlights."
 
INVESTMENT RESTRICTIONS
 
    Each Fund  has adopted  certain  fundamental and  nonfundamental  investment
restrictions  in addition to those set  forth above. As a fundamental investment
restriction which may not be changed without shareholder approval, no Fund  will
invest  25% or more of  its total assets in  any one industry. (This restriction
does not  apply  to  securities of  the  U.S.  Government or  its  agencies  and
instrumentalities  and  repurchase agreements  relating  thereto. As  to utility
companies,  gas,  electric,  telephone,   telegraph,  satellite  and   microwave
communications companies are considered as separate industries.) In addition, as
a nonfundamental investment restriction which may be changed at any time without
shareholder  approval, no Fund will  invest more than 5%  of its total assets in
the securities of issuers which, with their predecessors, have a record of  less
than  three years' continuous  operation. A list of  each Fund's fundamental and
nonfundamental  investment  restrictions  is  set  forth  in  the  Statement  of
Additional Information.
 
    Except   for  each  Fund's  policy  regarding  borrowing,  if  a  percentage
restriction set  forth  under  "Investment Objectives  and  Policies"  or  under
"Special Investment Methods" is adhered to at the time of an investment, a later
increase  or decrease in  percentage resulting from changes  in values or assets
will not constitute a violation of such restriction.
 
                                   MANAGEMENT
 
BOARD OF DIRECTORS
 
    The  Company's  Board  of  Directors  has  the  primary  responsibility  for
overseeing the overall management of the Company and electing its officers.
 
INVESTMENT ADVISER
 
    Piper  Capital  Management Incorporated  (the  "Adviser") has  been retained
under an Investment Advisory and Management Agreement with the Company to act as
the Funds'  investment  adviser  subject  to  the  authority  of  the  Board  of
Directors.
 
    In  addition to acting as the investment adviser for the other series of the
Company, the Adviser  also serves  as investment adviser  to a  number of  other
open-end  and  closed-end investment  companies and  to various  other concerns,
including pension and profit-sharing funds, corporate funds and individuals.  As
of   November  1,  1995,  the   Adviser  rendered  investment  advice  regarding
approximately $9 billion of assets. The Adviser is a wholly owned subsidiary  of
Piper  Jaffray  Companies Inc.,  a publicly  held  corporation which  is engaged
through its subsidiaries in various aspects of the financial services  industry.
The  address of  the Adviser  is Piper  Jaffray Tower,  222 South  Ninth Street,
Minneapolis, Minnesota 55402-3804.
 
                                       23
<PAGE>
    The Adviser furnishes each  Fund with investment  advice and supervises  the
management  and investment programs  of the Funds. The  Adviser furnishes at its
own expense all necessary administrative  services, office space, equipment  and
clerical  personnel for servicing the investments of the Funds. The Adviser also
provides investment advisory facilities and executive and supervisory  personnel
for  managing the  investments and effecting  the portfolio  transactions of the
Funds. In addition, the Adviser pays the  salaries and fees of all officers  and
directors of the Company who are affiliated with the Adviser.
 
    Under  the Investment Advisory and Management  Agreement, each Fund pays the
Adviser monthly fees at an annual rate of .75% on average daily net assets up to
$100 million. These  fees are  higher than fees  paid by  most other  investment
companies. The fees are scaled downward as net assets increase in size to as low
as .50% on net assets of over $500 million.
 
PORTFOLIO MANAGEMENT
 
    Beginning   December   9,   1994,  Steven   V.   Markusen   assumed  primary
responsibility for the day-to-day management of the Growth Fund's portfolio. Mr.
Markusen has been a  Senior Vice President of  the Adviser since December  1993.
Prior  to that,  he served  as a Senior  Vice President  of Investment Advisers,
Inc.,  in  Minneapolis,  Minnesota,  where  he  was  responsible  for   managing
institutional  equity  and  balanced  portfolios and  the  IAI  Growth  Fund. In
addition, he was  responsible for a  group which managed  $2.5 billion in  large
capitalization growth equity assets. Before joining Investment Advisers, Inc. in
1989,  Mr. Markusen was  a Vice President  with INVESCO Funds,  where he managed
three equity funds for five years.  He is a Chartered Financial Analyst  ("CFA")
and has 12 years of financial experience.
 
    Sandra  K.  Shrewsbury has  been  primarily responsible  for  the day-to-day
management of the Emerging  Growth Fund's portfolio  since 1993. Ms.  Shrewsbury
has  been a Vice President of the Distributor since 1990, prior to which she had
been an Assistant Vice  President of the  Distributor. She is a  CFA and has  13
years of financial experience.
 
    Paul  A. Dow has been primarily responsible for the day-to-day management of
the Growth and Income Fund's portfolio  since the Fund's inception in 1992.  Mr.
Dow has shared that primary responsibility with Michael S. Wallace since October
1995.  Mr. Dow has  been a Senior  Vice President of  the Adviser since February
1989 and Chief Investment Officer  of the Adviser since  December 1989. He is  a
CFA  and has 22 years of financial  experience. Mr. Wallace has been a portfolio
manager for the  Adviser since  December 1994,  prior to  which he  had been  an
analyst  for the  Adviser since  June 1993.  Prior to  joining the  Adviser, Mr.
Wallace was a  Financial Analyst  for Allstate  Insurance Company  from 1987  to
1991.  He has an MBA  in Finance and Accounting  from Cornell University and six
years of financial experience.
 
    Edward  P.  Nicoski  has  been  primarily  responsible  for  the  day-to-day
management of the Equity Strategy Fund's portfolio since the Fund's inception in
1987.  Mr. Nicoski has been  a Vice President of  the Adviser since October 1985
and a Managing Director of the Distributor since November 1986. He is a CFA with
26 years of financial experience.
 
    Bruce D. Salvog and David M. Steele have been primarily responsible for  the
day-to-day  management of the fixed income  portion of Balanced Fund's portfolio
since 1992. Mr. Salvog  has been a  Senior Vice President  of the Adviser  since
1992. He has an AB from Harvard University and 26 years of financial experience.
Mr. Steele has been a Senior Vice President of the Adviser since 1992. He has an
MBA  from  the  University of  Southern  California  and 16  years  of financial
experience. Paul  A.  Dow has  been  primarily responsible  for  the  day-to-day
management of the equity portion of Balanced Fund's portfolio since 1989. He has
shared  that primary responsibility  with John K.  Schonberg since October 1995.
Mr. Dow is also portfolio manager for Growth and Income Fund and his  experience
is  discussed above. Mr. Schonberg has been  a portfolio manager for the Adviser
since 1989, prior to which  he had been a  research analyst for the  Distributor
since 1987. Mr. Schonberg has eight years of financial experience.
 
TRANSFER AGENT, DIVIDEND DISBURSING AGENT AND CUSTODIAN
 
    Investors  Fiduciary Trust Company  ("IFTC"), 127 West  Tenth Street, Kansas
City, Missouri  64105,  (800)  874-6205,  serves as  Custodian  for  the  Funds'
portfolio  securities and  cash and  as Transfer  Agent and  Dividend Disbursing
Agent for the Funds.
 
                                       24
<PAGE>
    The Company has entered into  Shareholder Account Servicing Agreements  with
the Distributor and Piper Trust Company, an affiliate of the Distributor and the
Adviser. Under these agreements, the Distributor and Piper Trust Company provide
transfer  agent and dividend  disbursing agent services  for certain shareholder
accounts.  For   more   information,   see  "Investment   Advisory   and   Other
Services--Transfer  Agent  and Dividend  Disbursing Agent"  in the  Statement of
Additional Information.
 
PORTFOLIO TRANSACTIONS AND BROKERAGE COMMISSIONS
 
    The Adviser selects brokers and futures commission merchants to use for  the
Funds' portfolio transactions. In making its selection, the Adviser may consider
a  number  of  factors, which  are  more  fully discussed  in  the  Statement of
Additional Information, including,  but not limited  to, research services,  the
reasonableness  of commissions and quality of services and execution. A broker's
sales of shares of any series of the Company may also be considered a factor  if
the  Adviser is satisfied  that a Fund  would receive from  that broker the most
favorable price  and  execution  then available  for  a  transaction.  Portfolio
transactions  for  the  Funds  may  be effected  through  the  Distributor  on a
securities exchange in compliance with  Section 17(e) of the Investment  Company
Act  of 1940, as amended (the "1940  Act"). For more information, see "Portfolio
Transactions and  Allocation  of  Brokerage"  in  the  Statement  of  Additional
Information.
 
                          DISTRIBUTION OF FUND SHARES
 
    Piper  Jaffray acts as  the principal distributor of  the Funds' shares. The
Company has adopted a Distribution Plan  (the "Plan") as required by Rule  12b-1
under  the 1940  Act. Under  the Plan, the  Distributor is  paid a  total fee in
connection with  the  servicing  of  each Fund's  shareholder  accounts  and  in
connection  with  distribution related  services provided  with respect  to each
Fund. This fee is calculated and paid monthly at an annual rate equal to .50% of
the average daily net assets of each Fund.
 
    A portion of the total  fee equal to .25% of  each Fund's average daily  net
assets  is  categorized  as  a  distribution  fee  intended  to  compensate  the
Distributor for  its expenses  incurred  in connection  with  the sale  of  Fund
shares.  The remaining portion of the fee,  equal to .25% of each Fund's average
daily net assets, is categorized as  a servicing fee intended to compensate  the
Distributor  for ongoing  servicing and/or maintenance  of shareholder accounts.
The Distributor has voluntarily agreed to limit the total fee payable under  the
Plan  to .32% of  each Fund's average  daily net assets.  This limitation may be
revised or terminated  at any  time after fiscal  1996 year  end. Payments  made
under  the Plan are  not tied exclusively  to expenses actually  incurred by the
Distributor and may exceed such expenses.  The Adviser and the Distributor,  out
of  their own assets, may  pay for certain expenses  incurred in connection with
the distribution of  shares of the  Funds. In particular,  the Adviser may  make
payments  out of its own assets to Piper Jaffray Investment Executives and other
broker dealers in connection with their sales  of shares of the Funds. See  "How
to  Purchase Shares--Purchase Price." Further  information regarding the Plan is
contained in the Statement of Additional Information.
 
    The Distributor uses all or a portion of its Rule 12b-1 fee to make payments
to Investment  Executives  of  the Distributor  and  broker-dealers  which  have
entered into sales agreements with the Distributor. If shares of a Fund are sold
by  a  representative  of  a  broker-dealer  other  than  the  Distributor,  the
broker-dealer is  paid  .30%  of  the  average daily  net  assets  of  the  Fund
attributable  to shares sold by the broker-dealer's representative. If shares of
a Fund are sold by an  Investment Executive of the Distributor, compensation  is
paid to the Investment Executive in the manner set forth in a written agreement,
in  an amount not  to exceed .30%  of the average  daily net assets  of the Fund
attributable to shares sold by the Investment Executive.
 
                                       25
<PAGE>
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                         SHAREHOLDER GUIDE TO INVESTING
- --------------------------------------------------------------------------------
 
                             HOW TO PURCHASE SHARES
 
GENERAL
 
    The  Funds' shares may  be purchased at  the public offering  price from the
Distributor and from  other broker-dealers  who have sales  agreements with  the
Distributor.  The  address  of  the  Distributor  is  that  of  the  Funds.  The
Distributor reserves the right to reject any purchase order. You should be aware
that, because the  Funds do not  issue stock certificates,  Fund shares must  be
kept  in an account with  the Distributor or with  IFTC. All investments must be
arranged through your Piper Jaffray Investment Executive or other broker-dealer.
 
PURCHASE PRICE
 
    You may purchase shares of the Funds  at the net asset value per share  next
calculated  after  receipt  of  your  order  by  your  Piper  Jaffray Investment
Executive or other broker-dealer, plus a front-end sales charge as follows:
 
<TABLE>
<CAPTION>
                                                              SALES CHARGE         SALES CHARGE
                                                           AS A PERCENTAGE OF   AS A PERCENTAGE OF
AMOUNT OF TRANSACTION AT OFFERING PRICE                      OFFERING PRICE       NET ASSET VALUE
- ---------------------------------------------------------  -------------------  -------------------
<S>                                                        <C>                  <C>
Less than $100,000.......................................           4.00%                4.17%
$100,000 but less than $250,000..........................           3.25%                3.36%
$250,000 but less than $500,000..........................           2.50%                2.56%
$500,000 and over........................................           0.00%                0.00%
</TABLE>
 
    This table sets forth total  sales charges or underwriting commissions.  The
Distributor  may  reallow up  to the  entire sales  charge to  broker-dealers in
connection with their sales  of shares. These broker-dealers  may, by virtue  of
such reallowance, be deemed to be "underwriters" under the 1933 Act.
 
    The  Distributor will make certain payments to its Investment Executives and
to other  broker-dealers in  connection with  their sales  of Fund  shares.  See
"Distribution  of  Fund  Shares"  above. In  addition,  the  Distributor  or the
Adviser, at  their own  expense, provide  promotional incentives  to  Investment
Executives  of the Distributor  and to broker-dealers  who have sales agreements
with the Distributor  in connection  with sales of  shares of  the Funds,  other
series  of the  Company and  other mutual  funds for  which the  Adviser acts as
investment adviser. In some  instances, these incentives  may be made  available
only  to certain  Investment Executives or  broker-dealers who have  sold or may
sell significant amounts of such shares. The incentives may include payment  for
travel  expenses, including  lodging at  luxury resorts,  incurred in connection
with sales seminars.
 
PURCHASES OF $500,000 OR MORE
 
    If you make a purchase of $500,000 or more (including purchases made under a
Letter of Intent), a 1% contingent deferred sales charge will be assessed in the
event you redeem  shares within  24 months  following the  purchase. This  sales
charge  will be paid to  the Distributor. For more  information, please refer to
the Contingent Deferred  Sales Charge  section of  "How To  Redeem Shares."  The
Distributor  currently pays  its Investment Executives  and other broker-dealers
fees in connection with these purchases as follows:
 
<TABLE>
<CAPTION>
                                                                             FEE AS A PERCENTAGE
AMOUNT OF TRANSACTION                                                         OF OFFERING PRICE
- ---------------------------------------------------------------------------  --------------------
<S>                                                                          <C>
First $1,000,000...........................................................           1.00%
Next $2,000,000............................................................           0.75%
Next $2,000,000............................................................           0.50%
Next $5,000,000............................................................           0.25%
Above $10,000,000..........................................................           0.15%
</TABLE>
 
                                       26
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                         SHAREHOLDER GUIDE TO INVESTING
- --------------------------------------------------------------------------------
 
    Piper Jaffray Investment Executives and other broker-dealers generally  will
not  receive a fee in connection with purchases on which the contingent deferred
sales charge is waived. However, the  Distributor, in its discretion, may pay  a
fee  out of its own assets to its Investment Executives and other broker-dealers
in connection with purchases by employee benefit plans on which no sales  charge
is  imposed. Please  see the  Special Purchase  Plans section  of "Reducing Your
Sales Charge."
 
MINIMUM INVESTMENTS
 
    A minimum initial investment  of $250 is required.  There is no minimum  for
subsequent  investments.  The  Distributor,  in its  discretion,  may  waive the
minimum.
 
                           REDUCING YOUR SALES CHARGE
 
    You may qualify for a  reduced sales charge through  one or more of  several
plans.  You must notify your Piper Jaffray Investment Executive or broker-dealer
at the time of purchase to take advantage of these plans.
 
AGGREGATION
    Front-end  or  initial  sales  charges  may  be  reduced  or  eliminated  by
aggregating  your purchase with purchases  of certain related personal accounts.
In addition,  purchases made  by members  of certain  organized groups  will  be
aggregated  for  purposes  of  determining  sales  charges.  Sales  charges  are
calculated by adding the dollar amount of your current purchase to the higher of
the cost or current value of shares of  any Piper fund sold with a sales  charge
that  are currently held by you and your related accounts or by other members of
your group.
 
    QUALIFIED GROUPS.    You  may  group purchases  in  the  following  personal
accounts together:
 
    - Your individual account.
 
    - Your spouse's account.
 
    - Your children's accounts (if they are under the age of 21).
 
    - Your  employee  benefit plan  accounts if  they  are exclusively  for your
      benefit. This includes accounts such  as IRAs, individual 403(b) plans  or
      single-participant Keogh-type plans.
 
    - A  single trust estate or single fiduciary  account if you are the trustee
      or fiduciary.
 
    Additionally, purchases made by members  of any organized group meeting  the
requirements  listed below may  be aggregated for  purposes of determining sales
charges:
 
    - The group has been in existence for more than six months.
 
    - It is not organized for the  purpose of buying redeemable securities of  a
      registered investment company.
 
    - Purchases  must be  made through  a central  administration, or  through a
      single dealer, or by other means that result in economy of sales effort or
      expense.
 
    An organized  group does  not  include a  group  of individuals  whose  sole
organizational  connection is participation as credit card holders of a company,
policyholders  of  an  insurance  company,   customers  of  either  a  bank   or
broker-dealer or clients of an investment adviser.
 
RIGHT OF ACCUMULATION
 
    Sales  charges for purchases of Fund shares into Piper Jaffray accounts will
be automatically calculated  taking into account  the dollar amount  of any  new
purchases  along with the higher  of current value or  cost of shares previously
purchased in any other mutual fund managed by the Adviser (except Hercules Funds
Inc.) that was sold with a  sales charge. For other broker-dealer accounts,  you
should  notify your Investment  Executive at the time  of purchase of additional
Piper fund shares you may own.
 
                                       27
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                         SHAREHOLDER GUIDE TO INVESTING
- --------------------------------------------------------------------------------
 
LETTER OF INTENT
 
    Your sales charge may be reduced by signing a non-binding Letter of  Intent.
This  Letter of Intent will  state your intention to  invest $100,000 or more in
any of the mutual funds managed by the Adviser that are sold with a sales charge
(except Hercules Funds Inc.) over a 13-month period, beginning not earlier  than
90  days prior to  the date you  sign the Letter.  You will pay  the lower sales
charge applicable  to the  total amount  you plan  to invest  over the  13-month
period.  Part of your  shares will be  held in escrow  to cover additional sales
charges that may  be due if  you do not  invest the planned  amount. Please  see
"Purchase  of  Shares"  in  the Statement  of  Additional  Information  for more
details. You  can  contact your  Piper  Jaffray Investment  Executive  or  other
broker-dealer for an application.
 
                             SPECIAL PURCHASE PLANS
 
    For more information on any of the following special purchase plans, contact
your Piper Jaffray Investment Executive or other broker-dealer.
 
PURCHASES BY PIPER JAFFRAY COMPANIES INC., ITS SUBSIDIARIES AND ASSOCIATED
PERSONS
 
    Piper  Jaffray Companies  Inc. and  its subsidiaries  may buy  shares of the
Funds without incurring a  sales charge. The  following persons associated  with
such entities also may buy Fund shares without paying a sales charge:
 
    - Officers, directors and partners.
 
    - Employees and retirees.
 
    - Sales representatives.
 
    - Spouses or children under the age of 21 of any of the above.
 
    - Any  trust, pension, profit-sharing  or other benefit plan  for any of the
      above.
 
PURCHASES BY BROKER-DEALERS
 
    Employees of broker-dealers who have entered into sales agreements with  the
Distributor, and spouses and children under the age of 21 of such employees, may
buy shares of the Funds without incurring a sales charge.
 
PURCHASES BY OTHER INDIVIDUALS WITHOUT A SALES CHARGE
 
    The  following  other  individuals and  entities  also may  buy  Fund shares
without paying a sales charge:
    - Clients of  the Adviser  buying  shares of  the  Funds in  their  advisory
      accounts.
 
    - Discretionary   accounts  at  Piper  Trust  Company  and  participants  in
      investment companies exempt from registration under the 1940 Act that  are
      managed by the Adviser.
 
    - Trust  companies and  bank trust departments  using funds  over which they
      exercise exclusive discretionary investment  authority and which are  held
      in a fiduciary, agency, advisory, custodial or similar capacity.
 
    - Investors  purchasing shares through a  Piper Jaffray Investment Executive
      if the purchase of such shares is funded by the proceeds from the sale  of
      shares  of any  non-money market open-end  mutual fund.  This privilege is
      available for 30 days after the sale.
 
PURCHASES BY EMPLOYEE BENEFIT PLANS AND TAX-SHELTERED ANNUITIES
 
    - Shares of the  Funds will  be sold  at net  asset value,  without a  sales
      charge,  to  employee  benefit  plans  containing  an  actively maintained
      qualified cash  or  deferred  arrangement  under  Section  401(k)  of  the
      Internal  Revenue Code of 1986, as amended (the "Code") (a "401(k) Plan").
      In the event  a 401(k) Plan  of an  employer has purchased  shares in  the
      Funds  or any other series of the Company (other than a money market fund)
      during any  calendar quarter,  any  other employee  benefit plan  of  such
      employer  that is a qualified  plan under Section 401(a)  of the Code also
      may purchase shares of the Funds  during such quarter without incurring  a
      sales charge.
 
    - Custodial   accounts  under   Section  403(b)   of  the   Code  (known  as
      tax-sheltered  annuities)  also  may  buy  shares  of  the  Funds  without
      incurring a sales charge.
 
                                       28
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                         SHAREHOLDER GUIDE TO INVESTING
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                              HOW TO REDEEM SHARES
 
NORMAL REDEMPTION
 
    You may redeem all or a portion of your shares on any day that a Fund values
its  shares. (Please refer to "Valuation of Shares" below for more information.)
Your shares will be redeemed  at the net asset  value next calculated after  the
receipt  of  your instructions  in good  form by  your Piper  Jaffray Investment
Executive or other broker-dealer as explained below.
 
    PIPER JAFFRAY INC.  ACCOUNTS.  To  redeem your shares,  please contact  your
Piper Jaffray Investment Executive with an oral request to redeem your shares.
 
    OTHER BROKER-DEALER ACCOUNTS.  To redeem your shares, you may either contact
your  broker-dealer with an oral  request or send a  written request directly to
the Funds' transfer agent, IFTC. This request should contain: the dollar  amount
or number of shares to be redeemed, your Fund account number and either a social
security  or tax  identification number  (as applicable).  You should  sign your
request in exactly the same way the account is registered. If there is more than
one owner of the shares, all owners must sign. A signature guarantee is required
for redemptions over  $25,000. Please contact  IFTC or refer  to "Redemption  of
Shares" in the Statement of Additional Information for more details.
 
CONTINGENT DEFERRED SALES CHARGE
 
    If  you invest  $500,000 or more  and, as  a result, pay  no front-end sales
charge, you may incur a contingent deferred sales charge if you redeem within 24
months. This charge will be equal to 1% of the lesser of the net asset value  of
the  shares at the  time of purchase or  at the time  of redemption. This charge
does not apply to amounts representing an  increase in the value of Fund  shares
due  to  capital  appreciation or  to  shares acquired  through  reinvestment of
dividend or  capital gain  distributions. In  determining whether  a  contingent
deferred  sales charge is payable,  shares that are not  subject to any deferred
sales charge will be redeemed first, and  other shares will then be redeemed  in
the order purchased.
 
    LETTER  OF INTENT.  In  the case of a Letter  of Intent, the 24-month period
begins on the date the Letter of Intent is completed.
 
    SPECIAL PURCHASE PLANS.   If you  purchased your shares  through one of  the
plans  described above under  "Special Purchase Plans,"  the contingent deferred
sales charge will be waived. In  addition, the contingent deferred sales  charge
will be waived in the event of:
 
    - The  death or disability (as  defined in Section 72(m)(7)  of the Code) of
      the shareholder. (This waiver will be  applied to shares held at the  time
      of  death  or  the  initial  determination  of  disability  of  either  an
      individual shareholder or one who owns  the shares as a joint tenant  with
      the right of survivorship or as a tenant in common.)
 
    - A  lump sum  distribution from  an employee  benefit plan  qualified under
      Section 401(a) of the Code, an individual retirement account under Section
      408(a) of the  Code or a  simplified employee pension  plan under  Section
      408(k) of the Code.
 
                                       29
<PAGE>
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                         SHAREHOLDER GUIDE TO INVESTING
- --------------------------------------------------------------------------------
 
    - Systematic withdrawals from any such plan or account if the shareholder is
      at least 59 1/2 years old.
 
    - A  tax-free return of the excess  contribution to an individual retirement
      account under Section 408(a) of the Code.
 
    - Involuntary redemptions  effected  pursuant  to  the  right  to  liquidate
      shareholder  accounts having  an aggregate  net asset  value of  less than
      $200.
 
    EXCHANGES.  If you exchange your shares, no contingent deferred sales charge
will be imposed. However, the charge  will apply if you subsequently redeem  the
new shares within 24 months of the original purchase.
 
    REINSTATEMENT  PRIVILEGE.  If  you elect to  use the Reinstatement Privilege
(please see "Shareholder Services" below), any contingent deferred sales  charge
you  paid  will  be  credited  to  your  account  (proportional  to  the  amount
reinvested). Please see "Redemption  of Shares" in  the Statement of  Additional
Information for more details.
 
PAYMENT OF REDEMPTION PROCEEDS
 
    After  your shares  have been redeemed,  the cash proceeds  will normally be
sent to you or your broker-dealer within  three business days. In no event  will
payment  be made more than seven days after  receipt of your order in good form.
However, payment may be postponed or the right of redemption suspended for  more
than  seven days under unusual circumstances, such as when trading is not taking
place on the New York Stock Exchange. Payment of redemption proceeds may also be
delayed if the shares to be redeemed were  purchased by a check drawn on a  bank
which  is not  a member of  the Federal  Reserve System, until  such checks have
cleared the banking system (normally up to 15 days from the purchase date).
 
INVOLUNTARY REDEMPTION
    Each Fund reserves  the right to  redeem your  account at any  time the  net
asset  value of the  account falls below $200  as the result  of a redemption or
exchange request. You will be notified  in writing prior to any such  redemption
and will be allowed 30 days to make additional investments before the redemption
is processed.
 
                              SHAREHOLDER SERVICES
 
AUTOMATIC MONTHLY INVESTMENT PROGRAM
 
    You  may arrange  to make  additional automated  purchases of  shares of the
Funds  or  certain  other  mutual  funds   managed  by  the  Adviser.  You   can
automatically  transfer $100 or more per month  from your bank, savings and loan
or other financial institution  to purchase additional  shares. In addition,  if
you  hold your shares  in a Piper Jaffray  account you may  arrange to make such
additional purchases by having $25 or more automatically transferred each  month
from any of the money market fund series of the Company. You should contact your
Piper  Jaffray Investment Executive or IFTC to obtain authorization forms or for
additional information.
 
REINSTATEMENT PRIVILEGE
    If you have redeemed shares  of a Fund, you may  be eligible to reinvest  in
shares of any fund managed by the Adviser without payment of an additional sales
charge  (except  Hercules Funds  Inc.). The  reinvestment  request must  be made
within 30 days of the redemption.  This privilege is subject to the  eligibility
of  share purchases in your state as well as the minimum investment requirements
and any other applicable terms in the prospectus of the fund being acquired.
 
EXCHANGE PRIVILEGE
    If your investment  goals change,  you may prefer  a fund  with a  different
objective.  If you are considering an  exchange into another mutual fund managed
by the  Adviser,  you  should  carefully read  the  appropriate  prospectus  for
additional  information about  that fund. A  prospectus may  be obtained through
your Piper Jaffray Investment Executive, your broker-dealer or the  Distributor.
To exchange your shares, please contact your Piper Jaffray Investment Executive,
your broker-dealer or IFTC.
 
                                       30
<PAGE>
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                         SHAREHOLDER GUIDE TO INVESTING
- --------------------------------------------------------------------------------
 
    You  may exchange your shares for shares of any other mutual fund managed by
the Adviser (except  Hercules Funds  Inc.) that is  open to  new investors.  All
exchanges  are subject to  the eligibility of  share purchases in  your state as
well as the minimum  investment requirements and any  other applicable terms  in
the  prospectus of the fund  being acquired. Exchanges are  made on the basis of
the net asset  values of the  funds involved, except  that investors  exchanging
into a fund which has a higher sales charge must pay the difference.
 
    You  may make four exchanges  per year without payment  of a service charge.
Thereafter, you will  pay a  $5 service charge  for each  exchange. The  Company
reserves  the  right to  change or  discontinue the  exchange privilege,  or any
aspect of the privilege, upon 60 days' written notice.
 
TELEPHONE TRANSACTION PRIVILEGES
 
    PIPER JAFFRAY INC. ACCOUNTS.   If you  hold your shares  in a Piper  Jaffray
account,  you may telephone your Investment Executive to execute any transaction
or to apply for many shareholder services. In some cases, you may be required to
complete a written application.
 
    OTHER BROKER-DEALER ACCOUNTS.   If you hold your  shares in an account  with
your  broker-dealer  or  at  IFTC, you  may  authorize  telephone  privileges by
completing the  Account  Application  and Services  Form.  Please  contact  your
broker-dealer or IFTC (800-874-6205) for an application or for more details. The
Funds  will employ reasonable procedures to confirm that a telephonic request is
genuine, including requiring that payment be made only to the address of  record
or  the bank account designated on the Account Application and Services Form and
requiring certain  means of  telephonic identification.  A Fund  employing  such
procedures  will  not  be  liable  for  following  instructions  communicated by
telephone that it reasonably believes to be  genuine. If a Fund does not  employ
such  procedures,  it  may be  liable  for  any losses  due  to  unauthorized or
fraudulent telephone transactions.  It may be  difficult to reach  the Funds  by
telephone during periods when market or economic conditions lead to an unusually
large  volume of telephone requests. If you cannot reach the Funds by telephone,
you should contact your broker-dealer or  issue written instructions to IFTC  at
the   address  set  forth  herein.  See  "Management--Transfer  Agent,  Dividend
Disbursing Agent  and Custodian."  The Funds  reserve the  right to  suspend  or
terminate their telephone services at any time without notice.
 
DIRECTED DIVIDENDS
 
    You  may  direct  income dividends  and  capital gains  distributions  to be
invested in any other  mutual fund managed  by the Adviser  (other than a  money
market  fund  or  Hercules Funds  Inc.)  that  is offered  in  your  state. This
investment will be made at net asset value. It will not be subject to a  minimum
investment  amount except that you must hold  shares in such fund (including the
shares being acquired with the dividend  or distribution) with a value at  least
equal to such fund's minimum initial investment amount.
 
SYSTEMATIC WITHDRAWAL PLAN
 
    If  your  account  has  a value  of  $5,000  or more,  you  may  establish a
Systematic Withdrawal Plan for  any of the  Funds. This plan  will allow you  to
receive  regular periodic payments by redeeming as many shares from your account
as necessary. As with other redemptions, a redemption to make a withdrawal is  a
sale  for  federal  income  tax  purposes.  Payments  made  under  a  Systematic
Withdrawal Plan cannot be considered as actual yield or income since part of the
payments may be a return of capital.
 
                                       31
<PAGE>
- --------------------------------------------------------------------------------
                         SHAREHOLDER GUIDE TO INVESTING
- --------------------------------------------------------------------------------
 
    A request to  establish a Systematic  Withdrawal Plan must  be submitted  in
writing to your Piper Jaffray Investment Executive or other broker-dealer. There
are no service charges for maintenance; the minimum amount that you may withdraw
each  period is $100. You will be required  to have any income dividends and any
capital gains distributions reinvested. You may choose to have withdrawals  made
monthly, quarterly or semiannually. Please contact your Piper Jaffray Investment
Executive, other broker-dealer or IFTC for more information.
 
    You  should be aware that  additional investments in an  account that has an
active Systematic Withdrawal Plan  may be inadvisable due  to sales charges  and
tax  liabilities. Please  refer to  "Redemption of  Shares" in  the Statement of
Additional Information for additional details.
 
ACCOUNT PROTECTION
 
    If you purchased your  shares of any  of the Funds  through a Piper  Jaffray
Investment  Executive,  you  may  choose  from  several  account  options.  Your
investments in any  of the Funds  held in  a Piper Jaffray  account (except  for
non-"PAT"  accounts) would be  protected up to $25  million. Investments held in
non-"PAT" Piper Jaffray accounts are protected up to $2.5 million. In each case,
the Securities  Investor Protection  Corporation ("SPIC")  provides $500,000  of
protection;  the additional coverage is provided  by The Aetna Casualty & Surety
Company. This protection does not cover any  declines in the net asset value  of
Fund shares.
 
CONFIRMATION OF TRANSACTIONS AND REPORTING OF OTHER INFORMATION
 
    Each  time there  is a  transaction involving  your Fund  shares, such  as a
purchase, redemption or dividend reinvestment,  you will receive a  confirmation
statement  describing that  activity. This information  will be  provided to you
from either Piper  Jaffray, your broker-dealer  or IFTC. In  addition, you  will
receive  various IRS forms after the first  of each year detailing important tax
information and each Fund  is required to supply  annual and semiannual  reports
that  list  securities  held  by  the Fund  and  include  the  current financial
statements of the Fund.
 
    HOUSEHOLDING.  If  you have multiple  accounts with Piper  Jaffray, you  may
receive  some of the above information in  combined mailings. This will not only
help to reduce  Fund expenses,  it will help  the environment  by saving  paper.
Please contact your Piper Jaffray Investment Executive for more information.
 
                          DIVIDENDS AND DISTRIBUTIONS
 
    Dividends  from net  investment income,  if any,  will be  paid quarterly by
Growth Fund, Growth and Income Fund  and Balanced Fund and annually by  Emerging
Growth  Fund and Equity Strategy Fund. Net  realized capital gains, if any, will
be distributed at least once annually by each Fund.
 
    BUYING A DIVIDEND.   On the  ex-dividend date for  a distribution, a  Fund's
share price is reduced by the amount of the distribution. If you buy shares just
before  the ex-dividend 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.
 
    DISTRIBUTION  OPTIONS.  All net investment income dividends and net realized
capital gains distributions for a Fund  generally will be payable in  additional
shares  of that Fund at net asset  value ("Reinvestment Option"). If you wish to
receive  your  distributions  in  cash,  you  must  notify  your  Piper  Jaffray
Investment  Executive or  other broker-dealer. You  may elect  either to receive
income dividends in cash and capital gains distributions in additional shares of
the Fund  at  net  asset value  ("Split  Option"),  or to  receive  both  income
dividends  and capital gains distributions in cash ("Cash Option"). You may also
direct income  dividends  and capital  gains  distributions to  be  invested  in
another  mutual fund managed by the Adviser. See "Shareholder Services--Directed
Dividends" above.  The taxable  status of  income dividends  and/or net  capital
gains  distributions is not affected  by whether they are  reinvested or paid in
cash.
 
                                       32
<PAGE>
                              VALUATION OF SHARES
 
    The Funds compute  their net  asset value  on each  day the  New York  Stock
Exchange  (the "Exchange") is open  for business. The calculation  is made as of
the regular close of the Exchange (currently 4:00 p.m. New York time) after  the
Funds have declared any applicable dividends.
 
    The  net  asset value  per  share for  each of  the  Funds is  determined by
dividing the value of the securities owned  by the Fund plus any cash and  other
assets  (including interest  accrued and  dividends declared  but not collected)
less all liabilities by the number of Fund shares outstanding. For the  purposes
of  determining the aggregate net assets of the Funds, cash and receivables will
be valued  at their  face amounts.  Interest  will be  recorded as  accrued  and
dividends  will  be recorded  on the  ex-dividend date.  Securities traded  on a
national securities exchange or on the Nasdaq National Market System are  valued
at  the  last reported  sale price  that  day. Securities  traded on  a national
securities exchange or on the Nasdaq National Market System for which there were
no sales on that day and securities traded on other over-the-counter markets for
which market quotations are readily available are valued at the mean between the
bid and asked  prices. If  a Fund should  have an  open short position  as to  a
security,  the valuation of the  contract will be at the  average of the bid and
asked prices. Portfolio  securities underlying actively  traded options will  be
valued  at their market price  as determined above. The  current market value of
any exchange-traded option held or written by a Fund is its last sales price  on
the  exchange prior to the  time when assets are  valued. Lacking any sales that
day, the options will be valued at the mean between the current closing bid  and
asked  prices. Financial futures are valued  at the settlement price established
each day by the board of trade or exchange on which they are traded.
 
    The value  of  certain  fixed-income  securities  will  be  provided  by  an
independent pricing service, which determines these valuations at a time earlier
than  the  close of  the  Exchange. Pricing  services  consider such  factors as
security prices,  yields, maturities,  call features,  ratings and  developments
relating   to  specific   securities  in  arriving   at  securities  valuations.
Occasionally events affecting the value of such securities may occur between the
time valuations  are  determined  and  the close  of  the  Exchange.  If  events
materially  affecting the value of such  securities occur during such period, or
if the  Company's management  determines for  any other  reason that  valuations
provided  by the pricing service are  inaccurate, such securities will be valued
at their fair value according  to procedures decided upon  in good faith by  the
Board  of Directors. In addition,  any securities or other  assets of a Fund for
which market prices are not readily available will be valued at their fair value
in accordance with such procedures.
 
                                   TAX STATUS
 
    Each Fund  is treated  as  a separate  corporation  for federal  income  tax
purposes  under  the Internal  Revenue Code  of 1986,  as amended  (the "Code").
Therefore, each Fund is treated  separately in determining whether it  qualifies
as a regulated investment company under the Code and for purposes of determining
the  net ordinary income (or  loss), net realized capital  gains (or losses) and
distributions  necessary  to  relieve  such  Fund  of  any  federal  income  tax
liability. Each Fund qualified as a regulated investment company during its last
taxable  year and intends to  so qualify during the  current taxable year. If so
qualified, a Fund will not be liable  for federal income taxes to the extent  it
distributes its taxable income to shareholders.
 
    Distributions  by a Fund are generally  taxable to the shareholders, whether
received in cash or additional shares of  the Fund (or shares of another  mutual
fund  managed by the Adviser). Under  the Code, corporate shareholders generally
may deduct 70% of  distributions from a Fund  attributable to dividends paid  by
domestic  corporations.  Distributions  of  net  capital  gains  (designated  as
"capital gain  dividends")  are taxable  to  shareholders as  long-term  capital
gains,  regardless of the length of time  the shareholder has held the shares of
the Fund.
 
    A shareholder  will  recognize a  capital  gain or  loss  upon the  sale  or
exchange of shares in a Fund if, as is normally the case, the shares are capital
assets  in the shareholder's hands. This capital  gain or loss will be long-term
if the shares have been held for more than one year.
 
                                       33
<PAGE>
    The foregoing relates to federal income taxation as in effect as of the date
of this Prospectus.  For a more  detailed discussion of  the federal income  tax
consequences  of  investing  in  shares  of the  Funds,  see  "Taxation"  in the
Statement of Additional Information. Before investing  in any of the Funds,  you
should check the consequences of your local and state tax laws.
 
                            PERFORMANCE COMPARISONS
 
    Advertisements  and other sales literature  for Growth Fund, Emerging Growth
Fund, Growth and Income Fund, Equity  Strategy Fund and Balanced Fund may  refer
to  a Fund's  "average annual  total return"  and "cumulative  total return." In
addition,  Growth  and  Income  Fund   and  Balanced  Fund  may  provide   yield
calculations   in  advertisements  and  other  sales  literature.  When  a  Fund
advertises its yield, it will also advertise its total return as required by the
rules of the Securities and Exchange Commission. All such yield and total return
quotations are based upon historical earnings  and are not intended to  indicate
future performance. The return on and principal value of an investment in any of
the  Funds will fluctuate, so  that an investor's shares,  when redeemed, may be
worth more or less than their original cost.
 
    Yield calculations  will  be  based  upon a  30-day  period  stated  in  the
advertisement  and will be calculated by  dividing the net investment income per
share  (as  defined   under  Securities  and   Exchange  Commission  rules   and
regulations) earned during the advertised period by the offering price per share
(including  the maximum sales charge) on the  last day of the period. The result
will then  be  "annualized"  using  a  formula  that  provides  for  semi-annual
compounding of income.
 
    Average  annual total return is the average annual compounded rate of return
on a hypothetical  $1,000 investment  made at  the beginning  of the  advertised
period.  Cumulative  total return  is calculated  by subtracting  a hypothetical
$1,000 payment to a Fund from the redeemable value of such payment at the end of
the advertised period, dividing  such difference by  $1,000 and multiplying  the
quotient  by 100. In calculating average annual and cumulative total return, the
maximum sales  charge  is deducted  from  the hypothetical  investment  and  all
dividends  and distributions  are assumed  to be  reinvested. Such  total return
quotations may be accompanied by quotations  which do not reflect the  reduction
in  value of the initial investment due to the sales charge, and which thus will
be higher.
 
    Comparative performance information also  may be used from  time to time  in
advertising  the  Funds' shares.  For  example, advertisements  may  compare the
Funds' performance to that of various  unmanaged market indices, or may  include
performance  data from  Lipper Analytical  Services, Inc.,  Morningstar, Inc. or
other entities  or  organizations  which track  the  performance  of  investment
companies.
 
    For additional information regarding comparative performance information and
the  calculation  of yield,  average annual  total  return and  cumulative total
return,  see   "Performance  Comparisons"   in  the   Statement  of   Additional
Information.
 
                              GENERAL INFORMATION
 
    The  Company, which was  organized under the  laws of State  of Minnesota in
1986, is authorized to issue a total of 10 trillion shares of common stock, with
a par value of $.01  per share. Four hundred billion  of these shares have  been
authorized  by the Board of Directors to  be issued in thirteen separate series,
as follows: Growth Fund,  Emerging Growth Fund, Growth  and Income Fund,  Equity
Strategy  Fund, Balanced  Fund, Government Income  Fund, Short-Intermediate Bond
Fund, Institutional Government  Income Portfolio, National  Tax-Exempt Fund  and
Minnesota  Tax-Exempt Fund, each of which has ten billion authorized shares, and
Money Market Fund, Tax-Exempt Money Market Fund and U.S. Government Money Market
Fund, each of which has one hundred billion authorized shares.
 
    The Board  of  Directors  is  empowered  under  the  Company's  Articles  of
Incorporation  to issue additional series of  the Company's common stock without
shareholder  approval.  In  addition,  the  Board  of  Directors  may,   without
shareholder  approval, create and issue one or more additional classes of shares
within each Fund, as  well as within  any series of the  Company created in  the
future.  See  "Capital  Stock  and  Ownership of  Shares"  in  the  Statement of
Additional Information.
 
                                       34
<PAGE>
    All shares, when issued,  will be fully paid  and nonassessable and will  be
redeemable.  All shares have equal voting rights.  They can be issued as full or
fractional shares. A fractional share has  pro-rata the same kind of rights  and
privileges  as  a full  share. The  shares possess  no preemptive  or conversion
rights.
 
    Each share  of  a  series  has  one  vote  (with  proportionate  voting  for
fractional  shares) irrespective of the relative  net asset value of the series'
shares. On some issues,  such as the  election of directors,  all shares of  the
Company  vote together as  one series. On  an issue affecting  only a particular
series, the shares of the affected series vote separately. Cumulative voting  is
not  authorized. This  means that  the holders  of more  than 50%  of the shares
voting for the election  of directors can  elect 100% of  the directors if  they
choose to do so, and, in such event, the holders of the remaining shares will be
unable to elect any directors.
 
    The  Bylaws of  the Company provide  that shareholder meetings  be held only
with such frequency as required  under Minnesota law. Minnesota corporation  law
requires  only that the Board of  Directors convene shareholder meetings when it
deems appropriate. In addition, Minnesota law provides that if a regular meeting
of shareholders has not been held during the immediately preceding 15 months,  a
shareholder  or shareholders  holding 3%  or more  of the  voting shares  of the
Company may demand a regular meeting of shareholders by written notice given  to
the chief executive officer or chief financial officer of the Company. Within 30
days  after receipt of the demand, the  Board of Directors shall cause a regular
meeting of shareholders to be called, which meeting shall be held no later  than
90  days after  receipt of  the demand, all  at the  expense of  the Company. In
addition, the  1940  Act requires  a  shareholder  vote for  all  amendments  to
fundamental  investment  policies and  restrictions  and for  all  amendments to
investment advisory contracts and  Rule 12b-1 distribution  plans. The 1940  Act
also  provides that  Directors of the  Company may  be removed by  action of the
record holders of two-thirds or more  of the outstanding shares of the  Company.
The  Directors are required to call a meeting of shareholders for the purpose of
voting upon the question of removal of any Director when so requested in writing
by the record holders of at least 10% of the Company's outstanding shares.
 
PENDING LEGAL PROCEEDINGS
 
    Complaints have  been  brought  against  the  Adviser  and  the  Distributor
relating  to another series of the Company and to other investment companies for
which the Adviser acts or has  acted as investment adviser or subadviser.  These
lawsuits  do not involve the Funds. A  number of complaints have been brought in
federal and state  court against the  Institutional Government Income  Portfolio
("PJIGX")  series  of the  Company, the  Adviser,  the Distributor,  and certain
individuals  affiliated  or  formerly  affiliated  with  the  Adviser  and   the
Distributor.  In addition, complaints have been  filed in federal court relating
to a number of  closed-end investment companies managed  by the Adviser and  two
open-end  investment companies for  which the Adviser  has acted as sub-adviser.
The complaints, which ask for rescission of plaintiff shareholders' purchases or
compensatory damages, plus interest, costs and expenses, generally allege, among
other things,  certain  violations  of federal  and/or  state  securities  laws,
including  the  making  of  materially  misleading  statements  in  prospectuses
concerning investment  policies  and  risks. See  "Pending  Litigation"  in  the
Statement of Additional Information.
 
    A  settlement  agreement  has  been  reached  with  respect  to  one  of the
complaints involving  PJIGX. An  Amended  Consolidated Class  Action  Complaint,
which  represents a consolidation of claims  previously brought by 11 persons or
entities, was filed  on October  5, 1994 in  the United  States District  Court,
District  of Minnesota. The named plaintiffs  in this putative class action (the
"PJIGX action")  purport to  represent a  class of  individuals and  groups  who
purchased  shares of PJIGX  during the period  from July 1,  1991 through May 9,
1994. The  named  plaintiffs  and  defendants have  entered  into  a  settlement
agreement  which has received preliminary approval  from the Court. The terms of
the settlement are set forth in a  Settlement Agreement dated July 20, 1995  (as
modified  by  an Addendum  filed  on July  28,  1995). The  Settlement Agreement
contained a provision which  would have permitted the  defendants to cancel  the
Agreement if shareholders who had incurred a cumulative "loss" (as defined under
the  Agreement) of more than  10% of the loss sustained  by the entire class had
opted out. The October 2, 1995 deadline for requesting exclusion from the  class
has  passed, and the loss sustained by persons requesting exclusion is less than
10%. If granted  final approval  by the  Court, the  settlement agreement  would
provide  up to approximately $70 million  to class members in payments scheduled
over   approximately   three   years.   Such   payments   would   be   made   by
 
                                       35
<PAGE>
Piper  Jaffray Companies and the  Adviser and would not  be an obligation of the
Company. Six additional  complaints have been  brought and a  number of  actions
have  been commenced in arbitration relating  to PJIGX. The complaints generally
have been  consolidated with  the PJIGX  action for  pretrial purposes  and  the
arbitrations  and litigations have been stayed pending  entry of an order by the
Court permitting those  class members  who have requested  exclusion to  proceed
with their actions.
 
    The  Adviser and the Distributor to not believe that the PJIGX settlement or
any outstanding complaint or action in arbitration will have a material  adverse
effect  on their ability to perform under their agreements with the Company or a
material adverse effect on  the Funds, and they  intend to defend such  lawsuits
and actions vigorously.
 
    NO  DEALER, SALES REPRESENTATIVE OR OTHER PERSON HAS BEEN AUTHORIZED TO GIVE
ANY INFORMATION OR  TO MAKE ANY  REPRESENTATIONS OTHER THAN  THOSE CONTAINED  IN
THIS  PROSPECTUS (AND/OR IN THE STATEMENT  OF ADDITIONAL INFORMATION REFERRED TO
ON THE COVER PAGE OF THIS PROSPECTUS,), AND, IF GIVEN OR MADE, SUCH  INFORMATION
OR  REPRESENTATIONS MUST  NOT BE  RELIED UPON AS  HAVING BEEN  AUTHORIZED BY THE
FUNDS OR PIPER  JAFFRAY INC.  THIS PROSPECTUS DOES  NOT CONSTITUTE  AN OFFER  OR
SOLICITATION  BY ANYONE IN ANY STATE IN  WHICH SUCH OFFER OR SOLICITATION IS NOT
AUTHORIZED, OR IN  WHICH THE  PERSON MAKING SUCH  OFFER OR  SOLICITATION IS  NOT
QUALIFIED  TO DO SO, OR TO ANY PERSON TO  WHOM IT IS UNLAWFUL TO MAKE SUCH OFFER
OR SOLICITATION.
 
                                       36
<PAGE>
                                                                               -
 
                                PIPER FUNDS INC.
 
                               INVESTMENT ADVISER
                     Piper Capital Management Incorporated
 
                                  DISTRIBUTOR
                               Piper Jaffray Inc.
 
                          CUSTODIAN AND TRANSFER AGENT
                       Investors Fiduciary Trust Company
 
                              INDEPENDENT AUDITORS
                             KPMG Peat Marwick LLP
 
                                 LEGAL COUNSEL
                           Dorsey & Whitney P.L.L.P.
 
  Table of Contents
 
<TABLE>
<CAPTION>
                                          PAGE
<S>                                    <C>
Introduction.........................           2
Fund Expenses........................           3
Financial Highlights.................           5
Investment Objectives and Policies...          10
Special Investment Methods...........          18
Management...........................          23
Distribution of Fund Shares..........          25
SHAREHOLDER GUIDE TO INVESTING
  How to Purchase Shares.............          26
  Reducing Your Sales Charge.........          27
  Special Purchase Plans.............          28
  How to Redeem Shares...............          29
  Shareholder Services...............          30
  Dividends and Distributions........          32
Valuation of Shares..................          33
Tax Status...........................          33
Performance Comparisons..............          34
General Information..................          34
</TABLE>
 
  XGF/XTR-05
<PAGE>
                              HERCULES FUNDS INC.
                 HERCULES NORTH AMERICAN GROWTH AND INCOME FUND
 
                   PROXY FOR SPECIAL MEETING OF SHAREHOLDERS
                            TO BE HELD JUNE 18, 1996
 
    The  undersigned shareholder  of Hercules  North American  Growth and Income
Fund ("North American Fund"), a series  of Hercules Funds Inc. (the  "Company"),
does hereby appoint WILLIAM H. ELLIS, ROBERT H. NELSON and SUSAN SHARP MILEY and
each of them, as attorneys-in-fact and proxies of the undersigned, each with the
full  power of  substitution, to attend  the Special Meeting  of Shareholders of
North American Fund to  be held on  June 18, 1996, at  Piper Jaffray Tower,  222
South  Ninth Street, Third  Floor, Minneapolis, Minnesota  at 10:00 a.m. Central
time, and at all adjournments thereof and to vote the shares held in the name of
the undersigned on the record date  for said meeting for the Proposal  specified
on the reverse side hereof. Said attorneys-in-fact shall vote in accordance with
their best judgment as to any other matter.
 
    THIS  PROXY IS SOLICITED BY  THE BOARD OF DIRECTORS.  THE BOARD OF DIRECTORS
RECOMMENDS A VOTE FOR THE PROPOSAL LISTED ON THE REVERSE SIDE HEREOF. THE SHARES
REPRESENTED HEREBY WILL BE VOTED AS INDICATED  ON THE REVERSE SIDE OR FOR IF  NO
CHOICE IS INDICATED.
 
    Please  mark your proxy, date and sign it  on the reverse side and return it
promptly in the accompanying  envelope, which requires no  postage if mailed  in
the United States.
<PAGE>
PLEASE MARK BOXES / / OR /X/ IN BLUE OR BLACK INK.
 
The Proposal:
 
    Approval  of the Agreement and Plan of Reorganization, dated as of April 15,
1996 (the "Plan"), by and between the Company, on behalf of North American Fund,
and Piper  Funds Inc.,  on behalf  of Growth  and Income  Fund ("Growth  Fund"),
pursuant to which substantially all of the assets of North American Fund will be
acquired  by Growth  Fund and  shareholders of  North American  Fund will become
shareholders of Growth Fund receiving shares  of Growth Fund with a value  equal
to  the value of their holdings  in North American Fund. A  vote in favor of the
Plan will be  considered a  vote in  favor of an  amendment to  the articles  of
incorporation   of  the  Company  required   to  effect  the  reorganization  as
contemplated by the Plan.
 
            FOR    / /         AGAINST    / /         ABSTAIN    / /
                                        Dated: __ ________________________, 1996
                                                  (Month)          (Day)
                                        ________________________________________
                                                     Signature(s)
                                        ________________________________________
                                                     Signature(s)
 
                                       Please read both sides of this ballot.
 
                                       NOTE: PLEASE SIGN EXACTLY AS YOUR NAME(S)
                                       APPEAR HEREON.When signing as  custodian,
                                       attorney, executor, administrator,
                                       trustee,  etc.,  please  give  your  full
                                       title as  such. All  joint owners  should
                                       sign   this  proxy.  If  the  account  is
                                       registered in the name of a  corporation,
                                       partnership   or  other  entity,  a  duly
                                       authorized individual  must sign  on  its
                                       behalf and give his or her title.


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