UAM FUNDS TRUST
497, 1996-05-14
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<PAGE>

                                 UAM FUNDS TRUST
                        BHM&S TOTAL RETURN BOND PORTFOLIO
                           INSTITUTIONAL CLASS SHARES

       SUPPLEMENT DATED MAY 1, 1996 TO THE PROSPECTUS DATED APRIL 25, 1995
                           AS REVISED OCTOBER 31, 1995

                              FINANCIAL HIGHLIGHTS
                                   (Unaudited)

     The following table provides financial highlights for the BHM&S Total
Return Bond Portfolio (the "Portfolio") throughout the period presented and is
part of the Portfolio's unaudited financial statements for the period ended
March 31, 1996 which is included in the Portfolio's Statement of Additional
Information. The Statement of Additional Information and the financial
statements therein are available at no cost and can be requested by writing to
the address or calling the telephone number on the cover of the Prospectus. The
following should be read in conjunction with the financial statements including
the notes thereto.

<TABLE>
<CAPTION>

                                                      November 1, 1995**
                                                       to March 31, 1996
                                                          (Unaudited)
- ------------------------------------------------------------------------
<S>                                                         <C>
NET ASSET VALUE, BEGINNING OF PERIOD. . . . . . . . . . .   $10.00
- ------------------------------------------------------------------------
INCOME FROM INVESTMENT OPERATIONS
Net Investment Income+. . . . . . . . . . . . . . . . . .     0.23
Net Realized and Unrealized Gain (Loss)
   on Investments . . . . . . . . . . . . . . . . . . . .    (0.15)
- ------------------------------------------------------------------------
   Total from Investment Operations . . . . . . . . . . .     0.08
- ------------------------------------------------------------------------
DISTRIBUTIONS
Net Investment Income . . . . . . . . . . . . . . . . . .    (0.08)
- ------------------------------------------------------------------------
NET ASSET VALUE, END OF PERIOD. . . . . . . . . . . . . .   $10.00
- ------------------------------------------------------------------------
- ------------------------------------------------------------------------
TOTAL RETURN++. . . . . . . . . . . . . . . . . . . . . .    (1.58)%
- ------------------------------------------------------------------------
- ------------------------------------------------------------------------
RATIOS AND SUPPLEMENTAL DATA
Net Assets, End of Period (Thousands) . . . . . . . . . .   $2,484
Ratio of Expenses to Average Net Assets . . . . . . . . .     0.55%*
Ratio of Net Investment Income to Average  
   Net Assets . . . . . . . . . . . . . . . . . . . . . .     5.40%*
Portfolio Turnover Rate . . . . . . . . . . . . . . . . .       60%
- ------------------------------------------------------------------------
</TABLE>

*   Annualized
**  Commencement of Operations
+   Net of voluntarily waived fees and reimbursed expenses of $.15 per share
    for the period ended March 31, 1996.
++  Total return would have been lower had the Adviser not waived and assumed
    certain expenses during the period.
<PAGE>
                                   UAM FUNDS
                            UAM FUNDS SERVICE CENTER
                    C/O CHASE GLOBAL FUNDS SERVICES COMPANY
                                 P.O. BOX 2798
                             BOSTON, MA 02208-2798
                                 1-800-638-7983
 
- --------------------------------------------------------------------------------
 
                       BHM&S TOTAL RETURN BOND PORTFOLIO
                           INSTITUTIONAL CLASS SHARES
         INVESTMENT ADVISER: BARROW, HANLEY, MEWHINNEY & STRAUSS, INC.
- --------------------------------------------------------------------------------
 
            PROSPECTUS -- APRIL 25, 1995 AS REVISED OCTOBER 31, 1995
 
    The  BHM&S Total Return Bond Portfolio seeks  to provide a maximum long term
total return  consistent  with reasonable  risk  to principal  by  investing  in
investment grade fixed income securities of varying maturities. Income return is
expected  to  be a  predominant  portion of  the  Portfolio's total  return. Any
capital return on the Portfolio is dependent upon, among other factors, interest
rate changes as well as the average maturity and duration of the Portfolio.  The
Adviser  believes that by investing in undervalued securities with above average
effective yields and capital appreciation potential, the Portfolio will generate
superior returns over the long term while minimizing volatility and,  therefore,
downside  risk. There can  be no assurance  that the Portfolio  will achieve its
stated objective.
 
    BHM&S Total  Return  Bond  Portfolio  is  one  of  a  series  of  investment
portfolios available through UAM Funds Trust (hereinafter defined as "UAM Funds"
or  the "Fund"), an open-end investment company  known as a mutual fund. Each of
the Portfolios that make  up the Fund have  different investment objectives  and
policies.  In  addition, several  of the  Fund's  Portfolios offer  two separate
classes of shares,  Institutional Class Shares  and Institutional Service  Class
Shares  ("Service Class Shares"). Shares of each class represent equal, pro rata
interests in a Portfolio and accrue dividends in the same manner except that the
Service Class Shares bear fees payable by the class (at the maximum rate of .25%
per annum) to financial institutions for services they provide to the owners  of
such  shares. The BHM&S Total Return Bond Portfolio currently offers two classes
of shares. The  securities offered  in this Prospectus  are Institutional  Class
Shares of the BHM&S Total Return Bond Portfolio.
 
    Please   keep  this  Prospectus  for  future  reference  since  it  contains
information that you should understand before  you invest. You may also wish  to
review  the  BHM&S  Total  Return  Bond  Portfolio's  "Statement  of  Additional
Information" dated April 25, 1995, as revised October 31, 1995, which was  filed
with  the  Securities  and  Exchange Commission  and  has  been  incorporated by
reference into this Prospectus. (It is legally  considered to be a part of  this
Prospectus.)  Please call or  write UAM Funds  at the above  address to obtain a
free copy of this Statement.
 
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 OF  THIS PROSPECTUS. ANY
               REPRESENTATION TO THE CONTRARY IS A CRIMINAL OFFENSE.
<PAGE>
                               TABLE OF CONTENTS
 
<TABLE>
<CAPTION>
                                                                PAGE
                                                                ----
<S>                                                             <C>
Fees and Expenses...........................................       1
 
Summary: About the Portfolio................................       2
 
Risk Factors................................................       2
 
Performance Calculations....................................       3
 
Details on Investment Policies..............................       3
 
Buying, Selling and Exchanging Shares.......................       8
 
How Share Prices are Determined.............................      12
 
Dividends, Capital Gains Distributions and Taxes............      12
 
Fund Management and Administration..........................      13
 
General Fund Information....................................      15
 
UAM Funds -- Institutional Class Shares.....................      16
</TABLE>
<PAGE>
                               FEES AND EXPENSES
 
    Investors will be charged various fees and expenses incurred in managing the
BHM&S Total Return Bond Portfolio ("the Portfolio") including:
 
    SHAREHOLDER  TRANSACTION EXPENSES:  These are  the costs entailed in buying,
selling or exchanging  shares of the  Portfolio. The Portfolio  does not  charge
investors for shareholder transaction expenses. However, transaction fees may be
charged if you are a customer of a broker-dealer or other financial intermediary
who has established a shareholder servicing relationship with the Fund on behalf
of  their  customers. Please  see "Buying,  Selling  and Exchanging  Shares" for
further information.
 
<TABLE>
<CAPTION>
                                                                   INSTITUTIONAL CLASS       SERVICE CLASS
                                                                         SHARES                 SHARES
                                                                 -----------------------  -------------------
<S>                                                              <C>                      <C>
Sales Load Imposed on Purchases:...............................              NONE                   NONE
Sales Load Imposed on Reinvested Dividends:....................              NONE                   NONE
Deferred Sales Load:...........................................              NONE                   NONE
Redemption Fees:...............................................              NONE                   NONE
Exchange Fees:.................................................              NONE                   NONE
</TABLE>
 
    ESTIMATED ANNUAL FUND OPERATING EXPENSES:   These expenses, which cover  the
cost of administration, marketing and shareholder communication, and are usually
quoted  as a percentage of  net assets, are factored  into the Portfolio's share
price and not billed directly to shareholders. They include:
 
<TABLE>
<CAPTION>
                                                              INSTITUTIONAL CLASS SHARES   SERVICE CLASS SHARES
                                                              --------------------------   --------------------
<S>                                                           <C>                          <C>
Investment Advisory Fees:...................................            0.35%                     0.35%
Administrative Fees:........................................            0.13%                     0.13%
12b-1 Fees (Including Shareholder Servicing Fees):..........             NONE                     0.25%
Other Expenses:.............................................            0.22%                     0.22%
Advisory Fees Waived........................................           (0.15)%                   (0.15)%
                                                                       -----                     -----
Total Operating Expenses:...................................            0.55%*                    0.80%**
                                                                       -----                     -----
                                                                       -----                     -----
</TABLE>
 
- ------------------------
 *Barrow, Hanley, Mewhinney & Strauss, Inc., the Adviser, has voluntarily agreed
  to waive a portion  of its advisory  fees and to assume  as the Adviser's  own
  expense  certain  operating expenses  otherwise payable  by the  Portfolio, if
  necessary, in order to keep  the Portfolio's Institutional Class Shares  total
  operating expenses (excluding interest, taxes and extraordinary expenses) from
  exceeding  0.55% of its average daily net assets through December 31, 1997. It
  is estimated that without the Adviser's fee waiver the total annual  operating
  expenses  of the Portfolio's Institutional Class  Shares would be 0.70% of its
  average daily net assets.
 
**The Adviser has  also voluntarily agreed  to waive a  portion of its  advisory
  fees  and to  assume as the  Adviser's own expense  certain operating expenses
  otherwise payable  by  the Portfolio,  if  necessary,  in order  to  keep  the
  Portfolio's  Service  Class  Shares'  total  annual  operating  expenses  from
  exceeding 0.80% of its average daily net assets through December 31, 1997.  It
  is  estimated that without the Adviser's fee waiver the total annual operating
  expenses of the Portfolio's Institutional Service Class Shares would be  0.95%
  of its average daily net assets.
 
    The  fees  and  expenses  set  forth above  are  estimated  amounts  for the
Portfolio's first year of  operations assuming average daily  net assets of  $25
million.
 
    The  Adviser will not be reimbursed by  the Fund for any advisory fees which
are waived or expenses which the Adviser may bear on behalf of the Portfolio.
 
    Investors can get a  better idea of how  the Portfolio's operating  expenses
will  affect their own  investments by examining the  following chart. The chart
shows how much a hypothetical investor  would pay in expenses, assuming that  he
or  she made an initial investment of $1,000,  earned a 5% annual rate of return
and redeemed his or her investment at the end of the time period indicated.
 
<TABLE>
<CAPTION>
                                                    1 YEAR   3 YEARS
                                                    ------   -------
<S>                                                 <C>      <C>
Institutional Class Shares........................    $6       $18
Service Class Shares..............................    $8       $26
</TABLE>
 
    THIS EXAMPLE SHOULD  NOT BE CONSIDERED  A REPRESENTATION OF  PAST OR  FUTURE
EXPENSES  OR PERFORMANCE.  ACTUAL EXPENSES MAY  BE GREATER OR  LESSER THAN THOSE
SHOWN ABOVE.
 
                                       1
<PAGE>
                       SUMMARY: ABOUT THE PORTFOLIO . . .
 
OBJECTIVE:
 
    The Portfolio seeks to provide a  maximum long term total return  consistent
with  reasonable risk to principal by investing in investment grade fixed income
securities of varying maturities. Income return is expected to be a  predominant
portion  of the Portfolio's total return. Any capital return on the Portfolio is
dependent upon,  among others  factors, interest  rate changes  as well  as  the
average maturity and duration of the Portfolio.
 
    The  Adviser believes that by investing in undervalued securities with above
average effective yields and capital appreciation potential, the Portfolio  will
generate  superior returns over  the long term,  while minimizing volatility and
therefore downside risk.
 
    There can  be  no assurance  that  the  Portfolio will  achieve  its  stated
objective.
 
HOW IS THE PORTFOLIO MANAGED?
 
    Barrow,  Hanley, Mewhinney &  Strauss, Inc. ("the  Adviser") seeks to reduce
the risk that is inherent in the  fast-changing bond market while adding to  the
return  available  from  a  bond  market  index.  (See  "Details  on  Investment
Policies.")
 
WHO MANAGES THE PORTFOLIO?
 
    The Adviser is a  registered investment adviser  specializing in the  active
management  of stock, bond and balanced portfolios for institutional, tax-exempt
clients. Founded in 1979, the firm is a wholly-owned subsidiary of United  Asset
Management  Corporation. The Adviser  currently has $15  billion in assets under
management. (See "Fund Management and Administration.")
 
WHO SHOULD INVEST IN THE PORTFOLIO?
 
    The Portfolio is suitable  for investors who seek  high current income  from
their   investments  and  who  wish  to  have  moderate  exposure  to  principal
fluctuation. (See "Retirement Plans.")
 
HOW TO INVEST
 
    The Fund offers shares of beneficial  interest of the Portfolio through  UAM
Fund  Distributors, Inc.  to investors without  a sales commission  at net asset
value next determined after the purchase order is received in proper form. Share
purchases may be made by sending  investments directly to the Fund. The  minimum
initial  investment for the Portfolio is  $1,000,000; the minimum for subsequent
investments is $1,000. The officers of  the Fund may make certain exceptions  to
the minimum investment amounts. (See "Buying, Selling and Exchanging Shares.")
 
DIVIDENDS AND DISTRIBUTIONS
 
    The  Portfolio  will  normally  distribute  substantially  all  of  its  net
investment income in the form of  quarterly dividends. Any realized net  capital
gains will also be distributed annually. Distributions will be reinvested in the
Portfolio's  shares  automatically unless  an  investor elects  to  receive cash
distributions. (See "Dividends, Capital Gains Distributions and Taxes.")
 
HOW TO REDEEM
 
    Shares of the Portfolio  may be redeemed  on any business  day when the  New
York  Stock Exchange ("NYSE") is  open, without cost, at  the net asset value of
the Portfolio  next determined  after  receipt of  the redemption  request.  The
Portfolio's  share  price will  fluctuate with  market and  economic conditions.
Therefore, your investment  may be worth  more or less  when redeemed than  when
purchased. (See "Buying, Selling and Exchanging Shares.")
 
                                  RISK FACTORS
 
    Investing  in the  Portfolio entails  a number  of risks.  As with  any bond
investment, shares of the Portfolio will rise in value when interest rates  fall
and  vice versa.  In addition,  you should  consider the  following factors that
could effect the Portfolio's rate of return:
 
    -The fixed  income securities  held by  the Portfolio  will be  affected  by
     general  changes in interest  rates resulting in  increases or decreases in
     the value of the  securities. The value of  fixed income securities can  be
     expected  to vary  inversely to the  changes in  prevailing interest rates,
     i.e.,  as  interest  rates  decline,  the  market  value  of  fixed  income
     securities tends to increase and vice versa.
 
                                       2
<PAGE>
    -The  Portfolio may purchase securities on  a when-issued basis which do not
     earn interest until issued  and may decline or  appreciate in market  value
     prior to their delivery to the Portfolio.
 
    -The Portfolio will invest in investment grade debt securities, but reserves
     the  right to hold  securities that have  been downgraded. Adverse economic
     and corporate changes  and changes  in interest  rates may  have a  greater
     impact  on issuers of  lower rated debt securities  which the Portfolio may
     hold, which  may  lead  to  greater price  volatility.  Also,  lower  rated
     securities  may  be  more difficult  to  value  accurately or  sell  in the
     secondary market.
 
    -The Portfolio may invest  in repurchase agreements which  entail a risk  of
     loss should the seller default on its transaction.
 
    -The  Portfolio may lend  its investment securities which  entails a risk of
     loss should a borrower fail financially.
 
    Further information about these risk factors is contained in the "Details on
Investment Policies" section of this Prospectus.
 
                            PERFORMANCE CALCULATIONS
 
    The Portfolio measures  performance by calculating  yield and total  return.
Both yield and total return figures are based on historical earnings and are not
intended to indicate future performance.
 
    Yield  refers to the income generated by an investment in the Portfolio over
a given  period of  time, expressed  as an  annual percentage  rate. Yields  are
calculated  according to a standard that is required for all bond funds. As this
differs from other accounting methods, the quoted yield may not equal the income
actually paid to shareholders.
 
    Total return is the change in value of an investment in the Portfolio over a
given period,  assuming  reinvestment of  any  dividends and  capital  gains.  A
cumulative  or aggregate total return reflects  actual performance over a stated
period of time. An average annual total return is a hypothetical rate of  return
that, if achieved annually, would have produced the same cumulative total return
if  performance had been  constant over the entire  period. Average annual total
returns smooth out variations  in performance; they are  not the same as  actual
year-by-year results.
 
    Performance  will  be  calculated  separately  for  Institutional  Class and
Service  Class  Shares.  Dividends  paid  by  the  Portfolio  with  respect   to
Institutional  Class and Service  Class Shares, to the  extent any dividends are
paid, will be calculated in the same manner at the same time on the same day and
will be in the same amount, except that service fee and any incremental transfer
agency costs relating to Service Class Shares will be borne exclusively by  that
class.  The Fund will include performance  data for both Institutional Class and
Service Class  Shares  of the  Portfolio  in any  advertisement  or  information
including performance data of the Portfolio.
 
    The  Portfolio's performance may be compared to data prepared by independent
services which monitor the performance of investment companies, data reported in
financial and industry publications, and various indices as further described in
the Portfolio's Statement of Additional Information.
 
    Since this  is a  new Portfolio,  we  can offer  no information  about  past
portfolio  investment performance. When this  information becomes available, you
will  find  it,  together  with  comparisons  to  appropriate  indices,  in  the
Portfolio's Annual Report to Shareholders, which may be obtained without charge.
 
    Write to "UAM Funds" at the address on the front cover of this Prospectus or
call   1-800-638-7983  to  obtain  your  free  copy  of  the  Annual  Report  to
Shareholders.
 
                         DETAILS ON INVESTMENT POLICIES
 
INVESTMENT STRATEGY
 
    The Portfolio seeks to  achieve its objective by  investing at least 90%  of
its  total assets in a diversified portfolio of the following dollar-denominated
investment grade issues  of varying  maturities: U.S.  Treasuries and  Agencies;
zero  coupon obligations;  mortgage-backed securities;  asset-backed securities;
corporate bonds;  municipal bonds;  and  domestic, Yankeedollar  and  Eurodollar
bonds.  These issues  may have  fixed, variable  or floating  rates of interest.
Therefore, 10% or  less of the  Portfolio's assets will  be invested in  various
short-term investments. Please
 
                                       3
<PAGE>
see  "Short-Term Investments" for a list  of the short-term instruments in which
the Portfolio may invest. As a matter of policy, the Adviser does not intend  to
invest in or utilize futures, options or other complex derivative instruments or
securities.
 
    The  Adviser expects to actively  manage the Portfolio in  order to meet the
investment objective. To produce favorable  returns, the Adviser will invest  in
securities  that it  believes to be  undervalued, generating  an effective yield
advantage versus the market. To control the volatility of returns, the Portfolio
will exhibit a high  current yield, a high  quality and a conservative  maturity
structure.
 
    The  Adviser's  decision process  will focus  on security  selection, sector
concentration and  yield  curve positioning.  The  Adviser will  not  engage  in
economic  forecasts in an  attempt to "time  the market" since  it believes that
there  are  too  many  economic  and  political  variables  on  a  domestic  and
international  basis to do so successfully on a consistent basis. Therefore, the
Portfolio will maintain a conservative maturity structure, with securities being
diversified along the  yield curve.  The Portfolio's  average weighted  maturity
will  generally  be  ten  years  or less,  with  the  average  weighted duration
comparable to that of the Salomon  Brothers' Broad Investment Grade Index  which
is  approximately  five  years.  Duration compares  interest  rate  risk between
securities with different  coupons and  different maturities,  summarizing in  a
single  number the price sensitivity of a bond--how a bond's maturity and coupon
rate  affect  its  exposure  to  interest  rate  risk.  Duration  involves   the
application of several principles: as the maturity of a bond increases, duration
increases; as the coupon of a bond increases, duration decreases; generally, the
lower the coupon payment, the higher the duration; and duration decreases as the
frequency of the coupon payment increases.
 
    The  Adviser's security selection process begins by analyzing a bond's yield
to maturity premium (or spread) versus the most recently issued U.S. Treasury of
similar maturity. Having  identified bonds  with an  above-average premium,  the
Adviser  will then evaluate those factors  that will influence the bond's future
premium (i.e., credit quality, security structure, supply/demand  relationships,
etc.).  The objective of  this process is  to identify those  issues whose yield
premium will compress  or narrow over  a wide range  of potential interest  rate
change, supporting superior long term performance. Furthermore, the Adviser will
concentrate  the Portfolio's  holdings in  industry sectors  and maturity ranges
that  it   believes  are   undervalued  while   seeking  a   prudent  level   of
diversification.
 
    The  investment grade  bonds in  which the  Portfolio will  invest are those
having one of the four highest rating  categories at the time of purchase  (i.e.
Aaa, Aa, A or Baa by Moody's Investors Service, Inc. ("Moody's) or AAA, AA, A or
BBB  by Standard  & Poor's  Corporation ("S&P")).  Bonds rated  Baa or  BBB have
speculative characteristics and may be more sensitive to changes in the  economy
and the financial condition of issuers than higher rated bonds. The Adviser also
reserves  the right to retain securities which  are downgraded by one or both of
the rating agencies if, in the  Adviser's judgment, retention of the  securities
is   warranted.  Please  refer  to   the  Portfolio's  Statement  of  Additional
Information for a more detailed description of bond ratings.
 
MORTGAGE-BACKED SECURITIES
 
    Mortgage-backed  securities  are  collateralized   by  pools  of   mortgages
assembled  for subsequent sale to investors by various governmental agencies and
sponsored organizations as  well as  by private issuers.  The underlying  assets
collateralizing   the  mortgage-backed  securities  may  include  single-family,
multifamily  and   commercial  properties.   The   two  fundamental   forms   of
mortgage-backed   securities  are  pass-throughs   and  collateralized  mortgage
obligations ("CMOs"). Pass-throughs  produce monthly payments  of principal  and
interest  from the  underlying mortgages. CMOs  divide the  cash flows generated
from the underlying mortgages or mortgage pass-through securities into different
segments known as "tranches"  which are then retired  sequentially over time  in
order of priority. The market value and yield of mortgage-backed securities will
fluctuate  due  to market  interest  rate change  and  early prepayments  of the
underlying mortgages.  As  prepayment rates  on  mortgages vary  widely,  it  is
difficult  to accurately  predict the average  maturity of a  particular pool of
mortgages or tranches  of CMOs.  Although mortgage-backed  securities may  offer
higher   yields   than  those   available  from   other  types   of  securities,
mortgage-backed securities may be less effective than other types of  securities
as  a means of "locking in" an attractive rate for an extended period because of
the prepayment feature. The majority  of the mortgage-backed securities held  by
the  Portfolio will carry a  guarantee from an agency  of the U.S. Government of
the eventual payment of principal and interest.
 
ASSET-BACKED SECURITIES
 
    Asset-backed securities are collateralized by  short maturity loans such  as
automobile  receivables, credit card receivables,  other types of receivables or
assets.  Credit  support  for  asset-backed  securities  may  be  based  on  the
 
                                       4
<PAGE>
underlying  assets and/or provided through credit enhancements by a third party.
Credit enhancement  techniques  include  letters  of  credit,  insurance  bonds,
limited  guarantees  (which  are  generally  provided  by  the  issuer), senior-
subordinated structures and over-collateralization.
 
YANKEEDOLLAR AND EURODOLLAR SECURITIES
 
    Yankeedollar securities are U.S. dollar-based obligations issued inside  the
United  States by foreign entities.  Eurodollar securities are U.S. dollar-based
obligations issued outside the  United States by  domestic or foreign  entities.
Investment  in these  securities involve certain  risks which  are not typically
associated with investing  in domestic securities.  For example, non  U.S.-based
issuers are not subject to the same accounting, auditing and financial reporting
standards  as  are  domestic  issuers.  There  may  be  less  publicly-available
information about non-U.S.-based  issuers which  may make it  difficult to  make
investment  decisions.  Political factors  may  have an  impact  in the  form of
confiscatory taxation, expropriation or  political instability in  international
markets.  Some foreign governments also  levy withholding taxes against dividend
and interest  income. Although  in some  countries  a portion  of the  taxes  is
recoverable,  the non-recovered portion of foreign withholding taxes will reduce
the income the Portfolio receives from the companies comprising its investments.
 
WHEN-ISSUED, FORWARD DELIVERY AND DELAYED SETTLEMENT SECURITIES
 
    Occasionally, the  Portfolio  will  invest in  securities  whose  terms  and
characteristics  are already known but which have not yet been issued. These are
called "when-issued" or "forward delivery" securities. Usually these  securities
are  purchased within a  month of their issue  date. "Delayed settlements" occur
when the Portfolio agrees to buy or sell securities at some time in the  future,
making no payment until the transaction is actually completed.
 
    The  Portfolio will  maintain a  separate account  of cash,  U.S. Government
securities or other high-grade debt obligations  at least equal to the value  of
the  purchase commitments until payment is made. Typically, no income accrues on
securities purchased on a delayed delivery  basis prior to the time delivery  of
the  securities is made although the Portfolio  may earn income on securities it
has deposited in a segregated account.
 
    The Portfolio engages in these types of purchases in order to buy securities
that fit with its investment objective at attractive prices, not to increase its
investment leverage. Securities purchased on a when-issued basis may decline  or
appreciate in market value prior to their actual delivery to the Portfolio.
 
MUNICIPAL OBLIGATIONS
 
    Municipal obligations include notes, bonds and other securities issued by or
on behalf of states, territories and possessions of the U.S. and the District of
Columbia  and their political subdivisions,  agencies and instrumentalities. The
interest on  such municipal  obligations will  normally be  exempt from  federal
income  tax. These bonds may be general obligation bonds secured by the issuer's
pledge of its full faith, credit and  taxing power for the payment of  principal
and  interest,  or  they may  be  revenue  bonds payable  from  specific revenue
sources, but not generally backed by the issuers taxing power. These obligations
may include private activity  bonds where payment is  the responsibility of  the
private  industrial user of the facility  financed by the bonds. Municipal notes
are issued to  meet short-term funding  requirements of the  issuer and  include
construction loan notes, short-term discount notes, tax-exempt commercial paper,
demand  notes and similar instruments. Municipal  bonds will be rated investment
grade by Moody's and S&P, as  described above. Investment grade municipal  notes
will  be rated  MIG1, MIG2 or  MIG3 by Moody's,  or SP-1  or SP-2 by  S&P or, if
unrated, determined by the Adviser to be of comparable quality. Please refer  to
the  Portfolio's Statement of Additional  Information for a detailed description
of municipal note ratings.
 
ZERO COUPON SECURITIES
 
    A portion of the Portfolio may  be invested in zero coupon securities  which
are fixed income securities that do not make regular interest payments. Instead,
zero  coupon securities are sold at substantial discounts from their face value.
The difference between a zero coupon security's issue or purchase price and  its
face  value  represents  the  imputed  interest an  investor  will  earn  if the
obligation is  held  until  maturity.  Zero  coupon  securities  may  offer  the
Portfolio the opportunity to earn higher yields than those available on ordinary
interest paying obligations of similar credit quality and maturity. However, the
prices  of zero coupon securities may also exhibit greater price volatility than
ordinary fixed income securities because of the manner in which their  principal
and interest are returned to the investor.
 
RESTRICTED AND ILLIQUID SECURITIES
 
    The Portfolio may purchase restricted securities that are not registered for
sale  to  the general  public but  which  are eligible  for resale  to qualified
institutional investors under Rule 144A of the Securities Act of 1933. Under the
supervision of  the  Fund's  Board  of  Trustees,  the  Adviser  determines  the
liquidity of such investments by
 
                                       5
<PAGE>
considering  all  relevant  factors.  Provided that  a  dealer  or institutional
trading market in such  securities exists, these  restricted securities are  not
treated  as  illiquid  securities  for purposes  of  the  Portfolio's investment
limitations.  Certain  restrictions  applicable  to  the  Portfolio  limit   its
investment in securities that are illiquid by virtue of the absence of a readily
available market or because of legal or contractual restrictions on resale to no
more  than 15% of  the Portfolio's net  assets. However, the  Portfolio does not
intend to invest in private placements or other illiquid securities. The  prices
realized  from the sales of these securities could be less than those originally
paid by the Portfolio or less than what may be considered the fair value of such
securities.
 
OTHER INVESTMENT POLICIES
 
    The Portfolio may  also invest  in the following  securities and  investment
techniques:
 
SHORT-TERM INVESTMENTS
 
    Under  normal circumstances,  the Portfolio  may invest  10% or  less of its
assets in short-term investments in order to earn a return on uninvested  assets
or  to meet  anticipated redemptions.  The short-term  investments in  which the
Portfolio  will  invest   are  domestic  money   market  instruments   including
certificates  of deposit,  bankers acceptances,  time deposits,  U.S. Government
obligations,  U.S.  Government  agency  securities,  short-term  corporate  debt
securities,  and commercial paper rated A-1 or  A-2 by S&P or Prime-1 or Prime-2
by Moody's  or,  if unrated,  determined  by the  Adviser  to be  of  comparable
quality. Please refer to the Portfolio's Statement of Additional Information for
a detailed description of commercial paper ratings.
 
REPURCHASE AGREEMENTS
 
    The  Portfolio may invest up  to 10% of its  assets in repurchase agreements
collateralized by U.S. Government  securities, certificates of deposit,  bankers
acceptances  and other short-term securities as outlined above under "Short-Term
Investments". In a repurchase agreement, the Portfolio purchases a security and,
at the  same  time, arranges  to  sell  it back  to  the original  seller  on  a
predetermined  date. The repurchase  agreement states the  price that the seller
will pay for the security plus the interest rate that the purchaser will receive
while holding it. In effect, the Portfolio is lending its funds to the seller at
an agreed upon  interest rate  and receiving a  security as  collateral for  the
loan. Repurchase agreements can range from overnight to a fixed term. They are a
common way to earn interest on short-term funds.
 
    The  seller under  a repurchase agreement  will be required  to maintain the
value of  the securities  subject to  the agreement  at not  less than  (1)  the
repurchase  price if such securities mature in one  year or less, or (2) 101% of
the repurchase  price if  such securities  mature  in more  than one  year.  The
Administrator  and  the Adviser  will  mark to  market  daily the  value  of the
securities purchased, and the Adviser will, if necessary, require the seller  to
maintain  additional securities to  ensure that the value  is in compliance with
the previous sentence.
 
    There are  some  risks involved  in  repurchase agreements.  If  the  seller
defaults  on its  agreement to buy  back the  securities and the  value of those
securities falls, the Portfolio may incur losses in selling these securities  on
the open market. Also, if the seller enters bankruptcy, the bankruptcy court may
decide  that  the  securities  are  collateral not  within  the  control  of the
Portfolio and therefore are  subject to sale by  the trustee in the  bankruptcy.
Finally,  it  is  possible that  the  Portfolio may  not  be able  to  prove its
ownership of the underlying  securities. The Adviser  believes that these  risks
can be controlled by carefully reviewing the securities involved in a repurchase
agreement as well as the credit rating of the other party in the transaction.
 
LENDING OF PORTFOLIO SECURITIES
 
    The  Portfolio may lend its investment securities to qualified institutional
investors  who  need  to  borrow   securities  in  order  to  complete   certain
transactions,  such  as  covering  short  sales,  avoiding  failures  to deliver
securities or  completing  arbitrage operations.  The  Portfolio will  not  loan
portfolio  securities to the extent that greater than one-third of its assets at
fair market  value  would be  committed  to  loans. By  lending  its  investment
securities, the Portfolio attempts to increase its income through the receipt of
interest  on the loan.  Any gain or loss  in the market  price of the securities
loaned that might occur during the term of the loan would be for the account  of
the  Portfolio. The  Portfolio may lend  its investment  securities to qualified
brokers, dealers, domestic and foreign banks or other financial institutions, so
long as the terms, the structure and the aggregate amount of such loans are  not
inconsistent  with the  Investment Company Act  of 1940, as  amended, (the "1940
Act") or the  Rules and  Regulations or  interpretations of  the Securities  and
Exchange  Commission (the "Commission") thereunder, which currently require that
(a) the borrower pledge and maintain with the Portfolio collateral consisting of
cash, an  irrevocable  letter  of credit  issued  by  a domestic  U.S.  bank  or
securities  issued or guaranteed  by the U.S.  Government having a  value at all
times not less than 100% of the value of the securities loaned, (b) the borrower
add to such collateral whenever the price of the securities loaned rises  (i.e.,
the borrower "marks to the
 
                                       6
<PAGE>
market"  on a daily basis),  (c) the loan be made  subject to termination by the
Portfolio at any time, and (d) the Portfolio receives reasonable interest on the
loan (which may include the Portfolio investing any cash collateral in  interest
bearing short-term investments). All relevant facts and circumstances, including
the creditworthiness of the broker, dealer or institution, will be considered in
making decisions with respect to the lending of securities, subject to review by
the Fund's Board of Trustees.
 
    At  the present  time, the  Staff of  the Commission  does not  object if an
investment company pays  reasonable negotiated  fees in  connection with  loaned
securities so long as such fees are set forth in a written contract and approved
by  the investment company's  Board of Trustees. In  addition, voting rights may
pass with the  loaned securities, but  if a material  event occurs affecting  an
investment on a loan, the loan must be called and the securities voted.
 
PORTFOLIO TURNOVER
 
    This  Portfolio is managed for long-term appreciation rather than short-term
trading profits. As a  result, the Adviser seeks  to keep portfolio turnover  as
low  as possible  depending on  market conditions  and generally  below 150%. (A
turnover rate of 100% would mean that  all securities in the Portfolio would  be
replaced  within  a  one-year  period.)  Occasionally,  when  the  market shifts
suddenly or when the prospects for individual bonds change quickly, the  Adviser
may  find it necessary to  sell securities which have  not been in the Portfolio
for very long. High  rates of portfolio turnover  necessarily result in  heavier
brokerage  and portfolio  trading costs which  is paid by  the Portfolio. Higher
rates of turnover may result in the realization of capital gains. To the  extent
net short-term capital gains are realized, any distributions resulting from such
gains  are  considered  ordinary income  for  federal income  tax  purposes. The
Portfolio will not normally  engage in short-term trading,  but it reserves  the
right to do so.
 
INVESTMENT LIMITATIONS
 
    To  help reduce the Portfolio's exposure  to risk in specific situations, it
has adopted certain limitations associated  with its investments and  investment
practices.  These  policies  and  limitations  are  considered  at  the  time of
purchase. The sale of instruments is not  required in the event of a  subsequent
change in circumstances.
 
    The Portfolio's limitations are as follows:
 
    (a) With  respect to 75% of its assets,  the Portfolio may not own more than
        5% of the securities of any single issuer (other than investments issued
        or guaranteed  by  the  U.S.  Government  or  any  of  its  agencies  or
        instrumentalities);
 
    (b) With  respect to 75% of its assets,  the Portfolio may not own more than
        10% of the outstanding voting securities of any one issuer;
 
    (c) The Portfolio may not invest more than 5% of its assets in securities of
        issuers (other  than securities  issued  or guaranteed  by the  U.S.  or
        foreign  governments or  their political  subdivisions) that  have (with
        predecessors) less than 3 years of continuous operation;
 
    (d) The Portfolio may not  invest more than 25%  of its assets in  companies
        within   a  single  industry;  however,  there  are  no  limitations  on
        investments made  in  instruments  issued  or  guaranteed  by  the  U.S.
        Government and its agencies;
 
    (e) The Portfolio may not make loans except by purchasing debt securities in
        accordance  with its investment objective  and policies or entering into
        repurchase agreements or by lending  its portfolio securities to  banks,
        brokers,  dealers or other  financial institutions as  long as the loans
        are made in compliance with the 1940 Act and the rules, regulations  and
        interpretations of the Commission;
 
    (f) The  Portfolio  may  not  borrow  except  from  banks  in  extraordinary
        circumstances for temporary  or emergency purposes.  In this  situation,
        the  Portfolio may not (1) borrow more  than 33 1/3% of its gross assets
        and (2) cannot buy additional securities  if it borrows more than 5%  of
        its total assets; and
 
    (g) Pledge, mortgage or hypothecate more than 33 1/3% of its total assets at
        fair market value.
 
    The  Portfolio's investment  objective and investment  limitations (a), (b),
(d), (e) and  (f)(1) listed above  are fundamental policies  and may be  changed
only  with the approval of  the holders of a  majority of the outstanding voting
securities of the Portfolio. The other investment limitations described here and
those not specified as fundamental in the Statement of Additional Information as
well as the Portfolio's investment policies are not fundamental, and the  Fund's
Board of Trustees may change them without shareholder approval.
 
                                       7
<PAGE>
PORTFOLIO TRANSACTIONS
 
    The  Portfolio's  Investment Advisory  Agreement  authorizes the  Adviser to
select the  brokers or  dealers that  will execute  the purchases  and sales  of
investment  securities for the  Portfolio. The Agreement  directs the Adviser to
use its  best efforts  to obtain  the best  available price  and most  favorable
execution for all the Portfolio's transactions.
 
    It  is not  the Fund's  practice to  allocate brokerage  or effect principal
transactions with dealers  on the basis  of sales  of shares which  may be  made
through  broker-dealer firms.  However, the  Adviser may  place Portfolio orders
with qualified broker-dealers who recommend the  Portfolio or who act as  agents
in the purchase of shares of the Portfolio for their clients.
 
    Some  securities  considered for  investment by  the  Portfolio may  also be
appropriate for other clients served  by the Adviser. If  a purchase or sale  of
securities  consistent with the investment policies  of the Portfolio and one or
more of these other clients served by the Adviser is considered at or about  the
same time, transactions in such securities will be allocated among the Portfolio
and  clients in  a fair  and reasonable manner.  Although there  is no specified
formula for allocating such transactions, the various allocation methods used by
the Adviser, and the result of such allocations, are subject to periodic  review
by the Fund's Board of Trustees.
 
                     BUYING, SELLING AND EXCHANGING SHARES
 
    Shares of the Portfolio are offered through UAM Fund Distributors, Inc. (the
"Distributor")  to investors at net asset  value without a sales commission. The
minimum initial  investment is  $1,000,000, with  certain exceptions  determined
from  time  to time  by the  officers of  the Fund.  The minimum  for subsequent
investments is $1,000.
 
    Shares of the Portfolio may be  purchased by customers of broker-dealers  or
other  financial intermediaries ("Service Organizations") which have established
shareholder servicing relationships with the Fund on behalf of their  customers.
Those  Service Organizations  may impose  additional or  different conditions or
other account fees  on the  purchase and  redemption of  Portfolio shares.  Each
Service Organization is responsible for transmitting to its customers a schedule
of  any  such  fees  and  information  regarding  any  additional  or  different
conditions regarding purchases and  redemptions. Shareholders who are  customers
of   Service  Organizations  should  consult   their  Service  Organization  for
information regarding these fees and conditions. Some Service Organizations  may
receive  compensation from the Fund, the Fund's Distributor, the Adviser, or any
of the Adviser's  affiliates. A  salesperson and  any other  person entitled  to
receive  compensation  for selling  or  servicing Portfolio  shares  may receive
different compensation  with respect  to  one particular  class of  shares  over
another in the Fund.
 
    Service  Organizations  may enter  confirmed  purchases on  behalf  of their
customers. If  you buy  shares of  the  Portfolio in  this manner,  the  Service
Organization  must receive your investment order  before the close of trading on
the NYSE,  generally 4:00  p.m. (Eastern  Time) and  transmit it  to the  Fund's
Transfer Agent (prior to the close of the Transfer Agent's business day) and the
Distributor to receive that day's share price with proper payment to the Fund to
follow.  Proper payment for the order must  be received by the Transfer Agent no
later than the time when the Portfolio is priced on the following business  day.
Service  Organizations  are responsible  to their  customers,  the Fund  and the
Fund's Distributor for  timely transmission of  all subscription and  redemption
requests, investment information, documentation and money
 
HOW TO BUY SHARES BY MAIL
 
    If you have not invested in this Portfolio before, you will have to fill out
an  Account Registration  Form, which  can be  obtained by  calling the  Fund at
1-800-638-7983. Once you have filled out  the information on the form,  separate
the  two copies and sign both. We  require an original signature on both copies.
Mail the original copy. together with a check payable to UAM Funds Trust, to:
 
                                   UAM Funds
                            UAM Funds Service Center
                    c/o Chase Global Funds Services Company
                                 P.O. Box 2798
                             Boston, MA 02208-2798
 
                                       8
<PAGE>
    Mail the other copy, without the check, to:
 
                          UAM Fund Distributors, Inc.
                      One International Place, 44th Floor
                               100 Oliver Street
                                Boston, MA 02110
 
    To make additional investments to  an account you have already  established,
simply  mail your check to  UAM Funds Service Center  at the address above. Make
sure that your account number, account name,  and the name of the Portfolio  are
clearly indicated on the check so that we can properly credit your account.
 
    For  both initial and additional investments, your funds will be credited to
your account at the next share price calculated for the Portfolio after receipt.
Investments received by 4  p.m. will be invested  at the share price  calculated
after  the market closes on the same day. (For example, if your check arrives on
Tuesday morning, you  will purchase  shares at  the price  calculated after  the
market close on Tuesday.)
 
HOW TO BUY SHARES BY WIRE
 
    To  make an initial investment by wire, you must first telephone the Fund at
1-800-638-7983. A representative will then ask you to provide the account number
from which you plan to  wire the funds, the  bank or financial institution,  its
address,  phone  number  and  your social  security  or  taxpayer identification
number. You will then tell the representative which Portfolio you wish to invest
in and how much  you want to  invest. The representative  will then provide  you
with an account number. Please write it down and keep it for your records.
 
    Once  you have an account number, call your bank and instruct them to wire a
specified amount to the Fund's custodian,  Morgan Guaranty Trust Company of  New
York ("Custodian Bank"). You will be asked to provide the following information:
 
                   Morgan Guaranty Trust Company of New York
                               New York, NY 10015
                                ABA# 0210-0023-8
                             DDA Acct. #001-73-353
                             F/B/O UAM Funds Trust
      Ref: BHM&S Total Return Bond Portfolio (Institutional Class Shares)
               Your account number: ____________________________
                Your account name: ____________________________
 
    After  you have instructed  the bank to  wire the money,  you must forward a
completed Account Registration Form to the  UAM Funds Service Center as soon  as
possible.  You  can obtain  forms by  calling  the UAM  Funds Service  Center at
1-800-638-7983. Federal Funds purchases will be  accepted only on days when  the
NYSE and the Custodian Bank are open for business.
 
    Once  you have made the  initial purchase, you may  buy additional shares by
wire at any time  by following the instructions  above. On all wired  purchases,
funds  will be  invested at  the share  price calculated  after the  next market
close.
 
OTHER PURCHASE INFORMATION
 
    Non-securities dealer  Service Organizations  may receive  transaction  fees
that are the same as distribution fees paid to dealers.
 
    The Fund reserves the right, in its sole discretion, to suspend the offering
of  shares or reject purchase orders of  the Portfolio when, in the judgement of
management, such suspension or rejection is in the best interests of the Fund.
 
    Purchases of shares will be made in full and fractional shares calculated to
three decimal places. In the  interest of economy and convenience,  certificates
for  shares will not be issued except at the written request of the shareholder.
Certificates for fractional shares, however, will not be issued.
 
IN-KIND PURCHASES
 
    Under certain circumstances,  investors who  own securities may  be able  to
exchange  them directly  for shares  of the  Portfolio without  converting their
investments into cash first.  The Portfolio will  accept such in-kind  purchases
only  if the  securities offered  for exchange  meet the  Portfolio's investment
criteria which are set forth in the "Details on Investment Policies" section  of
this    Prospectus.   Once    accepted,   the   securities    will   be   valued
 
                                       9
<PAGE>
according to the process described in  "How Share Prices are Determined" at  the
same  time the Portfolio's shares  are valued. Once a  value has been determined
for both, an exchange  will be made. All  dividends, interest, subscription,  or
other  rights pertaining to these securities  become the Fund's property; if you
receive any  such  items,  you  must  deliver  them  to  the  Fund  immediately.
Securities  acquired  by  the  Portfolio through  an  in-kind  purchase  will be
acquired for investment and not for resale.
 
    The Fund  will not  accept  securities for  exchange  unless they  meet  the
following criteria:
 
       -The  securities are eligible to be  included in the Portfolio and
        market quotes can readily be obtained for them.
 
       -The investor assures the Fund that the securities are not subject
        to any restrictions under the Securities Act of 1933 or any other
        law or regulation.
 
       -The value  of  the securities  exchanged  does not  increase  the
        Portfolio's  position in  any specific issuer's  security to more
        than 5% of the Portfolio's total net assets.
 
    For tax purposes, the  IRS generally treats any  exchange of securities  for
Portfolio  shares as a sale  of the securities. This  means that if you exchange
securities which  have appreciated  in value  since you  bought them,  you  will
realize  capital gains and incur a tax  liability. If you are interested in such
an exchange, we suggest  you discuss any potential  tax liability with your  tax
adviser before proceeding.
 
RETIREMENT PLANS
 
    The  Portfolio is also suitable for individual tax-deferred retirement plans
including 401(k) Defined Contribution Plans and IRA Contributions or Rollovers.
 
HOW TO SELL SHARES
 
    You may sell shares by telephone or  mail at any time, free of charge.  Your
shares  will  be valued  at  the next  price  calculated after  we  receive your
instructions to sell.
 
    Your request should be addressed to:
 
                            UAM Funds Service Center
                    c/o Chase Global Funds Services Company
                                 P.O. Box 2798
                             Boston, MA 02208-2798
 
BY MAIL
 
    To redeem by mail, you should include the following:
 
       -your share certificates, if we have issued them to you;
 
       -a letter which tells  us how many shares  you wish to redeem  or,
        alternatively, what dollar amount you wish to receive;
 
       -a  signature guaranteed by  your bank, broker  or other financial
        institution (see "Signature Guarantees" below); and
 
       -any other  necessary legal  documents, in  the case  of  estates,
        trusts,  guardianships, custodianships, corporations, pension and
        profit-sharing plans and other organizations.
 
    If you are not sure  which documents to send,  please contact the UAM  Funds
Service Center at 1-800-638-7983.
 
BY TELEPHONE
 
    To   redeem  shares  by  telephone,  you  must  have  completed  an  Account
Registration Form and returned it to the Fund. Once this form is on file, simply
call the Fund and request the redemption amount to be mailed to you or wired  to
your  bank.  The  Fund and  the  Fund's  Transfer Agent  will  employ reasonable
precautions to make  sure that  the instructions communicated  by telephone  are
genuine.  You will be asked to  provide certain personal identification when you
open an  account,  and  again,  when you  request  a  telephone  redemption.  In
addition, all telephone transaction requests will be recorded, and investors may
be  required  to  provide  additional telecopied  written  instructions  of such
transaction  requests.  Neither  the  Fund  nor  the  Transfer  Agent  will   be
responsible  for any loss, additional cost or expense for following instructions
received by telephone  that it reasonably  believes are genuine.  To change  the
name  of the  commercial bank  or the  account designated  to receive redemption
proceeds, a written
 
                                       10
<PAGE>
request must be sent to the Fund at the address on the cover of this Prospectus.
Requests to change the bank or account  must be signed by each shareholder,  and
each  signature must be guaranteed. You cannot redeem shares by telephone if you
hold stock  certificates for  these shares.  Please contact  one of  the  Fund's
representatives at 1-800-638-7983 for further details.
 
SIGNATURE GUARANTEES
 
    To  protect your account, the Fund and the Fund's Transfer Agent from fraud,
signature guarantees are required for certain redemptions. Signature  guarantees
are  used to verify that the person who authorizes a redemption is, in fact, the
registered shareholder. They are required whenever you:
 
       -redeem shares and request  that the proceeds  be sent to  someone
        other  than the registered shareholder(s)  or to an address which
        is not the registered address; or
 
       -transfer shares from one Portfolio to another.
 
    Signatures must  be guaranteed  by an  "eligible guarantor  institution"  as
defined  in Rule  17Ad-15 under  the Securities Exchange  Act of  1934. (The UAM
Funds Service Center can provide  you with a full  definition of the term.)  You
can  obtain a  signature guarantee at  almost any  bank as well  as through most
brokers, dealers,  credit  unions,  national  securities  exchanges,  registered
securities   associations,   clearing   agencies   and   savings   associations.
Broker-dealers  guaranteeing  signatures  must  be   a  member  of  a   clearing
corporation  or maintain net capital of at least $100,000. Credit unions must be
authorized to issue signature guarantees. Signature guarantees will be  accepted
from  any  eligible  guarantor  institution which  participates  in  a signature
guarantee program. A notary public can not provide a signature guarantee.
 
    The signature guarantee must appear either:
 
       -on the written request for redemption; or
 
       -on a separate instrument for  assignment (a "stock power")  which
        should specify the total number of shares to be redeemed; or
 
       -on all stock certificates tendered for redemption, and, if shares
        held  by the Fund are also being  redeemed, then on the letter or
        stock power.
 
FURTHER INFORMATION ON SELLING SHARES
 
    Normally, the  Fund  will  make  payment for  all  shares  sold  under  this
procedure  within one business day after we  receive a request. In no event will
payment be  made more  than seven  days  after receipt  of a  redemption  (sale)
request  in good order. The Fund may suspend the right of redemption or postpone
the date at times when both the NYSE and Custodian Bank are closed or under  any
emergency circumstances as determined by the Commission.
 
    If  the Fund's Board of Trustees determines  that it would be detrimental to
the best interests of  the remaining shareholders of  the Fund to make  payments
wholly  or partly in cash, the Fund may  pay the redemption proceeds in whole or
in part by  a distribution in-kind  of liquid securities  held by the  Portfolio
instead of cash in conformity with applicable rules of the Commission. Investors
may  incur brokerage  charges when  they sell  portfolio securities  received in
payment of redemptions.
 
HOW TO EXCHANGE SHARES
 
    You may exchange Institutional Class Shares  of the Portfolio for any  other
Institutional  Class Shares of  a Portfolio included  in the UAM  Funds which is
comprised of the Fund and UAM Funds, Inc. (See the list of Portfolios of the UAM
Funds -- Institutional  Class Shares at  the end of  this Prospectus.) When  you
exchange  shares you sell  your old shares and  buy new ones,  both at the price
calculated after the next market close. There is no sales charge for  exchanges.
Exchange  requests may be  made by phone  or letter. Telephone  exchanges may be
made only if the Fund  holds all share certificates  and if the registration  of
the  two  accounts  is identical.  Telephone  exchanges received  before  4 p.m.
Eastern Time will be processed at the share price set after the market close the
same day. Exchanges received after 4 p.m.  Eastern Time will be executed at  the
share  price determined at the market close on the following day. For additional
information  regarding  responsibility  for   the  authenticity  of   telephoned
transaction  instructions, see "How  to Sell Shares --  By Telephone" above. The
exchange privilege  is  only  available  with respect  to  Portfolios  that  are
registered for sale in a shareholder's state of residence.
 
                                       11
<PAGE>
    Neither  the Fund nor the Fund's Transfer Agent will take responsibility for
ensuring it is indeed the shareholder  issuing the exchange orders; however,  we
may use some of the precautions described above for selling shares. The Fund may
also  limit both the frequency and the amount of exchanges permitted if it is in
the interest of the Fund's shareholders.
 
    Please review a Portfolio's investment objectives before shifting money into
it. Make  sure its  objectives and  strategies fit  with your  long-term  goals.
Before  exchanging into a Portfolio, read its Prospectus. You may obtain one for
the Portfolio(s) you are interested in  by calling the UAM Funds Service  Center
at 1-800-638-7983. Remember, every time you exchange shares of one Portfolio for
another,  your transaction  is counted  as a  sale of  the first  security and a
purchase of the second. As a result, you may incur a tax liability by exchanging
shares if your investment has appreciated since you bought it. Consult your  tax
adviser to determine your liability for capital gains taxes.
 
                        HOW SHARE PRICES ARE DETERMINED
 
    The  value of each class of shares  of the Portfolio is calculated every day
that the NYSE is open. This means that shares are valued after the market close,
generally at 4  p.m. Eastern  Time on Monday  through Friday,  except for  major
holidays when the NYSE is closed.
 
    The value of each share is determined by adding up the total market value of
all  the  securities in  the  Portfolio plus  cash  and other  assets, deducting
liabilities, then dividing  by the  total number  of shares  outstanding of  the
class.  Net  asset  value includes  interest  on  bonds and  other  fixed income
securities which is accrued daily. Bonds  and other fixed income securities  are
valued  according  to the  broadest and  most  representative market  which will
ordinarily be the over-the-counter  market. In addition,  bonds and other  fixed
income  securities may be  valued on the  basis of prices  provided by a pricing
service when such prices are believed to  reflect the fair market value of  such
securities.
 
    The value of other assets and securities for which no quotations are readily
available  (including restricted securities) is determined in good faith at fair
value using methods determined by the Fund's Board of Trustees.
 
                DIVIDENDS, CAPITAL GAINS DISTRIBUTIONS AND TAXES
 
DIVIDENDS
 
    Bonds generate  income  in  the  form of  periodic  interest  payments.  The
Portfolio  will  normally distribute  substantially  all of  its  net investment
income from these payments to shareholders  in the form of quarterly  dividends.
This  means that the amount of income net of expenses each share has earned over
the past quarter will be determined  and subtracted from the total share  value.
The  net  income is  then either  distributed to  you in  cash or  reinvested in
Portfolio shares at the new after-dividend price, depending on your instructions
to the Portfolio. Unless you specifically tell us to distribute dividend  income
in  cash, however, we will  assume you want this  income reinvested. By law, you
must pay  taxes  on  any  dividend  or  interest  income  you  receive  on  your
investments whether distributed in cash or reinvested in shares. The interest on
municipal  obligations will normally be exempt from federal taxes. The Portfolio
will send you a statement  at the end of the  year telling you exactly how  much
dividend income you have earned for tax purposes.
 
CAPITAL GAINS
 
    Capital   gains  are  another  source  of  appreciation  to  the  Portfolio.
Basically, a capital gain is  an increase in the value  of a bond. However,  for
tax purposes, the Portfolio does not need to "realize" or declare a capital gain
unless it sells a bond which has appreciated.
 
    You can incur capital gains in two ways. First, if the Portfolio buys a bond
at  one price, then sells it at a  higher price, it will realize a capital gain.
At the end of the  year, the capital gains the  Portfolio has made are added  up
and  capital losses are subtracted.  If any net capital  gains are realized, the
Portfolio will  normally distribute  such  gains annually.  You will  receive  a
statement  at the end of the year informing you of your share of the Portfolio's
capital gains.
 
    The second way to incur capital gains is to sell or exchange your shares. If
you sell shares at a higher price than you bought them, you will be  responsible
for  paying taxes  on your gain.  There are  several ways to  determine your tax
liability, and we suggest you contact a qualified tax adviser to help you decide
which is best for you.
 
                                       12
<PAGE>
TAXES
 
    The Portfolio  intends  to qualify  each  year as  a  "regulated  investment
company"  under Federal tax law, and if  it qualifies, the Portfolio will not be
liable for Federal  income taxes because  it will have  distributed all its  net
investment  income and net realized  capital gains to shareholders. Shareholders
will then have to pay taxes on  dividends, whether they are distributed as  cash
or  are reinvested in shares, and on net short-term capital gains. Dividends and
short-term capital gains  will be  taxed as ordinary  income. Long-term  capital
gains distributions are taxed as long-term capital gains.
 
    Dividends  declared  in October,  November and  December to  shareholders of
record in such a month will be treated as if they had been paid by the Fund  and
received  by the shareholders on December 31 of the same calendar year, provided
that the dividends are paid before February of the following year.
 
    The Fund is required by Federal  law to withhold 31% of reportable  payments
(which  may include dividends, capital gains distributions and redemptions) paid
to shareholders who have  not complied with IRS  regulations. In order to  avoid
this  withholding requirement, you must certify on the Account Registration Form
or on a separate form supplied by the Fund that your Social Security or Taxpayer
Identification Number  you  have  provided  is correct  and  that  you  are  not
currently  subject  to backup  withholding or  that you  are exempt  from backup
withholding.
 
    Dividends  and  interest  received  by  the  Portfolio  may  give  rise   to
withholding and other taxes imposed by foreign countries. These taxes reduce the
Portfolio's  dividends but are  included in the taxable  income reported on your
tax statement if the  Portfolio qualifies for this  tax treatment and elects  to
pass  it through to  you. You may be  able to claim an  offsetting tax credit or
itemized deduction for foreign  taxes paid by the  Portfolio Your tax  statement
will  generally show the amount  of foreign tax for  which a credit or deduction
may be available.
 
                       FUND MANAGEMENT AND ADMINISTRATION
 
THE INVESTMENT ADVISER
 
    The Adviser is a registered investment adviser formed in 1979. Its  business
offices  are located  at One McKinney  Plaza, 3232 McKinney  Avenue, 15th Floor,
Dallas, Texas 75204. It is a wholly-owned subsidiary of United Asset  Management
Corporation and provides and offers investment management services to corporate,
public  and Taft-Hartley employee benefit plans, foundations, endowments, health
care and other institutions and investors. The Adviser currently has $15 billion
in assets under management.
 
    The Portfolio pays an annual fee in monthly installments to the Adviser  for
advisory  services.  This  fee  is  accrued daily  and  paid  every  month  as a
percentage of  the average  net assets  in  the Portfolio  for that  month.  The
percentage  fee on an annual basis is  0.35%. The Adviser has voluntarily agreed
to waive a  portion of  its advisory  fees and to  assume as  the Adviser's  own
expense  certain  operating  expenses  otherwise payable  by  the  Portfolio, if
necessary, in order  to keep  the Portfolio's Institutional  Class Shares  total
operating  expenses from exceeding 0.55% through  December 31, 1997. The Adviser
will not be reimbursed  by the Fund  for any advisory fees  which are waived  or
expenses which the Adviser may bear on behalf of the Fund.
 
    The  Adviser may compensate its affiliated companies for referring investors
to the Portfolio. The Adviser and its  parent company may also make payments  to
unaffiliated  brokers who perform distribution, marketing, shareholder and other
services with respect to the Portfolio.
 
    The investment professionals at the  Adviser responsible for the  day-to-day
management of the Portfolio and their qualifications are as follows:
 
    JOHN  S.  WILLIAMS --  Fixed  Income Principal  and  the first  fixed income
portfolio manager at the Adviser in 1983. Mr. Williams has also managed balanced
and municipal portfolios during his 19 year investment career. Prior to  joining
the Adviser, he was responsible for the management of all fixed income assets at
Southland  Trust, Dallas, Texas, and  prior to that was  a portfolio manager and
securities analyst at InterFirst Bank Dallas Trust Department. Mr. Williams  has
served on the Advisory Committee for the Texas Teachers Retirement System and is
an  active member in the  Dallas Investment Analysts Society.  He is a Chartered
Financial Analyst, earning his MBA in 1976 and BBA in 1975 from Texas  Christian
University.
 
    DAVID  R. HARDIN --  Fixed Income Principal and  portfolio manager. Prior to
joining the Adviser in 1987, Mr. Hardin  was the Vice President and Director  of
the  Fixed  Income  Group  of  RepublicBank  Dallas  Trust  Department.  In that
position, he was responsible  for the management of  all taxable and  tax-exempt
fixed  income assets  of the  Trust Division,  including all  separately managed
accounts, collective investment fund products, and
 
                                       13
<PAGE>
the creation  of and  management  of an  SEC-registered  mutual fund.  Prior  to
attaining  the Director's position,  Mr. Hardin was  a taxable portfolio manager
and also served as  the credit analyst  for the Trust  Division. He started  his
investment  career  as  a private  placement  credit analyst  while  employed by
American General Insurance Co. in Houston in 1976. Mr. Hardin received an  M.Sc.
from  The London  School of  Economics in  1975 and  a BBA  from Texas Christian
University in 1973.
 
    STEPHEN M. MILANO -- Fixed Income Principal and portfolio manager. Prior  to
joining  the Adviser in 1990, Mr. Milano  was employed at Salomon Brothers, Inc.
in New York as a Vice President of the Fixed Income Strategy Group. In that role
he was a specialist in developing portfolio structure and strategies for  active
management  of taxable assets. While at Salomon  he also served as Product Sales
Manager for  International  Fixed  Income  Securities  and  as  a  Mortgage  and
Government  Specialist. Prior to  joining Salomon, Mr. Milano  was employed as a
portfolio manager and trader  at Equitable Life  Assurance Society. He  received
his  BS in Economics with a concentration  in Finance from the Wharton School of
the University of Pennsylvania in 1980.
 
    J. SCOTT MCDONALD  -- Fixed  Income Portfolio  Analyst/Trader. Mr.  McDonald
joined  the Adviser in 1995 to serve  as a security and portfolio specialist for
the Fixed Income  Group. In addition  to security and  portfolio analyst, he  is
responsible  for systems  analytics used  in the  evaluation of effective/option
adjusted yield measurements for all securities and portfolios. He also serves as
compliance monitor  of all  fixed  income portfolios  to ensure  commonality  of
structure and diversification. Mr. McDonald previously served as the Senior Vice
President  and Portfolio  Manger at Life  Partners Group, Inc.  in Dallas. While
with Life Partners, he was responsible for implementing investment strategy  for
$3  billion in assets. Additionally, he has been employed by Texas Commerce Bank
Houston as a Credit Supervisor and Lending Officer. He received his MBA in  1991
from  the University  of Texas  at Austin  and his  BBA from  Southern Methodist
University in 1986.
 
    DEBORAH  J.  ANDERSON  --  Senior  Portfolio  Assistant.  Ms.  Anderson   is
responsible  for all administrative  staff and their  duties associated with the
fixed  income  product  management,  including  communication/liaison  with  all
clients,  custodial  banks,  and  brokerage  relationships.  She  supervises all
operational aspects of fixed income security trading and works extensively  with
reporting requirements for all clients and regulatory agencies. Prior to joining
the  Adviser in 1988, Ms. Anderson served  as a Trust Officer with Trust Company
of Texas  and  its  predecessor, Southland  Trust  Co.  She received  a  BBA  in
Accounting from the University of Texas at Arlington in 1974.
 
THE ADMINISTRATOR
 
    The  Chase Manhattan Bank, N.A., through  its subsidiary, Chase Global Funds
Services Company,  provides all  administrative, fund  accounting, transfer  and
dividend disbursing agent services to the Fund.
 
    According  to  the Fund  Administration  Agreement, the  Portfolio  pays the
administrator a fee for  its services. This  fee is a portion  of the total  fee
paid  by all the Portfolios of the UAM Funds. On an annualized basis, this total
fee equals:
 
       0.20% of the first $200 million in combined Fund assets
       0.12% of the next $800 million in combined Fund assets
       0.08% on assets over $1 billion but less than $3 billion
       0.06% on assets over $3 billion
 
    Fees are  allocated among  the Portfolios  on the  basis of  their  relative
assets  and are subject to a designated minimum fee schedule per Portfolio which
ranges from $2,000 per month upon  inception of a Portfolio to $70,000  annually
after two years.
 
THE DISTRIBUTOR
 
    The  Distributor,  a  wholly-owned  subsidiary  of  United  Asset Management
Corporation, distributes the shares of  the Fund. Under the Fund's  Distribution
Agreement  (the "Agreement"), the  Distributor, as agent of  the Fund, agrees to
use its best efforts as sole  distributor of the Fund's shares. The  Distributor
does  not receive any fee or other compensation under the Agreement with respect
to the Portfolio's Institutional  Class Shares offered  in this Prospectus.  The
Agreement continues in effect as long as the Fund's Board of Trustees, including
a  majority of the Trustees  who are not parties  to the Agreement or interested
persons of  any  such party,  approve  it on  an  annual basis.  This  Agreement
provides  that the Fund  will bear the  costs of the  registration of its shares
with the Commission  and various states  and the printing  of its  prospectuses,
statements of additional information and reports to shareholders.
 
                                       14
<PAGE>
CUSTODIAN
 
    Morgan  Guaranty Trust Company of New York serves as custodian of the Fund's
assets.
 
ACCOUNTANTS
 
    Price Waterhouse LLP acts  as the independent accountants  for the Fund  and
audits its financial statements annually.
 
ADMINISTRATOR, TRANSFER AND DIVIDEND DISBURSING AGENT
 
    Chase  Global Funds Services  Company, 73 Tremont  Street, Boston, MA 02108,
acts as  administrator, transfer  agent and  dividend disbursing  agent for  the
Fund.
 
REPORTS
 
    Investors will receive unaudited semi-annual financial statements and annual
financial statements audited by Price Waterhouse LLP.
 
SHAREHOLDER INQUIRIES
 
    Shareholder  inquiries may  be made  by writing to  the Fund  at the address
listed on the cover of this Prospectus or by calling 1-800-638-7983.
 
LITIGATION
 
    The Fund is not involved in any litigation.
 
PRINCIPAL BUSINESS ADDRESS OF DISTRIBUTOR
 
    UAM Fund Distributors, Inc.
    One International Place, 44th Floor
    100 Oliver Street
    Boston, Massachusetts 02110
 
                            GENERAL FUND INFORMATION
 
    The Portfolio is one of a series of investment portfolios available  through
UAM  Funds Trust, an open-end investment company  known as a "mutual fund." Each
of the Portfolios which  make up the Fund  have different investment  objectives
and  policies. Together, the Portfolios  offer a diverse set  of risk and return
characteristics to suit a wide range  of investor needs. The Fund was  organized
under the name "The Regis Fund II" on May 18, 1994 as a Delaware business trust.
On October 31, 1995, the name of the Fund was changed to "UAM Funds Trust."
 
DESCRIPTION OF SHARES AND VOTING RIGHTS
 
    The   Officers  of  the  Fund  manage  its  day-to-day  operations  and  are
responsible to the Fund's Board of Trustees. The Trustees set broad policies for
the Fund and elect its Officers.
 
    The Fund's Agreement and Declaration of  Trust permits the Fund to issue  an
unlimited  number  of  shares of  beneficial  interest, without  par  value. The
Trustees have  the power  to  designate one  or  more series  ("Portfolios")  or
classes of shares of beneficial interest without further action by shareholders.
 
    The  shares of  each Portfolio and  class have  noncumulative voting rights,
which means that  the holders  of more  than 50% of  the shares  voting for  the
election  of Trustees can elect 100% of the  Trustees if they choose to do so. A
shareholder is entitled to one vote for  each full share held (and a  fractional
vote  for each fractional share held), then standing in his name on the books of
the Fund.  Both  Institutional  Class  and Service  Class  Shares  represent  an
interest  in the same  assets of a  Portfolio and are  identical in all respects
except  that  the  Service  Class  Shares  bear  certain  expenses  related   to
shareholder  servicing, may  bear expenses related  to the  distribution of such
shares and have exclusive voting rights with respect to matters relating to such
distribution  expenditures.  The  Fund  will  not  ordinarily  hold  shareholder
meetings  except as required by the 1940 Act and other applicable laws. The Fund
has undertaken that its Trustees will call  a meeting of shareholders if such  a
meeting  is requested  in writing  by the holders  of not  less than  10% of the
outstanding shares of the Fund. To  the extent required by the undertaking,  the
Fund will assist shareholder communications in such matters.
 
    NO  PERSON  HAS BEEN  AUTHORIZED  TO GIVE  ANY  INFORMATION OR  TO  MAKE ANY
REPRESENTATIONS OTHER  THAN  THOSE  CONTAINED  IN  THIS  PROSPECTUS  OR  IN  THE
PORTFOLIO'S  STATEMENT OF ADDITIONAL INFORMATION IN CONNECTION WITH THE OFFERING
MADE BY  THIS  PROSPECTUS  AND,  IF  GIVEN OR  MADE,  SUCH  INFORMATION  OR  ITS
REPRESENTATIONS  MUST NOT BE RELIED UPON AS  HAVING BEEN AUTHORIZED BY THE FUND.
THIS PROSPECTUS DOES NOT CONSTITUTE AN OFFERING BY THE FUND IN ANY  JURISDICTION
IN WHICH SUCH OFFERING MAY NOT BE LAWFULLY MADE.
 
                                       15
<PAGE>
                    UAM FUNDS -- INSTITUTIONAL CLASS SHARES
 
ACADIAN ASSET MANAGEMENT, INC.
  Acadian Emerging Markets Portfolio
  Acadian International Equity Portfolio
 
BARROW, HANLEY, MEWHINNEY & STRAUSS, INC.
  BHM&S Total Return Bond Portfolio
 
CHICAGO ASSET MANAGEMENT COMPANY
  Chicago Asset Management Value/Contrarian Portfolio
  Chicago Asset Management Intermediate Bond Portfolio
 
COOKE & BIELER, INC.
  C&B Balanced Portfolio
  C&B Equity Portfolio
 
C.S. MCKEE & COMPANY, INC.
  McKee Domestic Equity Portfolio
  McKee International Equity Portfolio
  McKee U.S. Government Portfolio
 
DEWEY SQUARE INVESTORS CORPORATION
  DSI Disciplined Value Portfolio
  DSI Limited Maturity Bond Portfolio
  DSI Money Market Portfolio
 
FIDUCIARY MANAGEMENT ASSOCIATES, INC.
  FMA Small Company Portfolio
 
INVESTMENT COUNSELORS OF MARYLAND, INC.
  ICM Equity Portfolio
  ICM Fixed Income Portfolio
  ICM Small Company Portfolio
 
MURRAY JOHNSTONE INTERNATIONAL LTD.
  MJI International Equity Portfolio
 
NEWBOLD'S ASSET MANAGEMENT, INC.
  Newbold's Equity Portfolio
 
NWQ INVESTMENT MANAGEMENT COMPANY
  NWQ Balanced Portfolio
  NWQ Value Equity Portfolio
 
RICE, HALL, JAMES & ASSOCIATES
  Rice, Hall, James Small Cap Portfolio
 
SIRACH CAPITAL MANAGEMENT, INC.
  Sirach Equity Portfolio
  Sirach Fixed Income Portfolio
  Sirach Short-Term Reserves Portfolio
  Sirach Special Equity Portfolio
  Sirach Strategic Balanced Portfolio
 
SPECTRUM ASSET MANAGEMENT, INC.
  SAMI Preferred Stock Income Portfolio
  Enhanced Monthly Income Portfolio
 
STERLING CAPITAL MANAGEMENT COMPANY
  Sterling Partners' Balanced Portfolio
  Sterling Partners' Equity Portfolio
  Sterling Partners' Short-Term Fixed Income Portfolio
 
THOMPSON, SIEGEL & WALMSLEY, INC.
  TS&W Equity Portfolio
  TS&W Fixed Income Portfolio
  TS&W International Equity Portfolio
 
                                       16
<PAGE>
                     (This page intentionally left blank.)
<PAGE>

                                 UAM FUNDS TRUST
                        BHM&S TOTAL RETURN BOND PORTFOLIO
                       INSTITUTIONAL SERVICE CLASS SHARES

       SUPPLEMENT DATED MAY 1, 1996 TO THE PROSPECTUS DATED APRIL 25, 1995
                           AS REVISED OCTOBER 31, 1995

                              FINANCIAL HIGHLIGHTS
                                   (Unaudited)

     The following table provides financial highlights for the BHM&S Total
Return Bond Portfolio (the "Portfolio") throughout the period presented and is
part of the Portfolio's unaudited financial statements for the period ended
March 31, 1996 which is included in the Portfolio's Statement of Additional
Information. The Statement of Additional Information and the financial
statements therein are available at no cost and can be requested by writing to
the address or calling the telephone number on the cover of the Prospectus. The
following should be read in conjunction with the financial statements including
the notes thereto.

<TABLE>
<CAPTION>

                                                       November 1, 1995**
                                                        to March 31, 1996
                                                           (Unaudited)
- -------------------------------------------------------------------------
<S>                                                          <C>
NET ASSET VALUE, BEGINNING OF PERIOD . . . . . . . . . .     $10.00
- -------------------------------------------------------------------------
INCOME FROM INVESTMENT OPERATIONS
Net Investment Income+ . . . . . . . . . . . . . . . . .       0.13
Net Realized and Unrealized Gain (Loss)
   on Investments. . . . . . . . . . . . . . . . . . . .      (0.07)
- -------------------------------------------------------------------------
   Total from Investment Operations. . . . . . . . . . .       0.06
- -------------------------------------------------------------------------
DISTRIBUTIONS
Net Investment Income. . . . . . . . . . . . . . . . . .      (0.08)
- -------------------------------------------------------------------------
NET ASSET VALUE, END OF PERIOD . . . . . . . . . . . . .     $ 9.98
- -------------------------------------------------------------------------
- -------------------------------------------------------------------------
TOTAL RETURN++ . . . . . . . . . . . . . . . . . . . . .      (1.77)%
- -------------------------------------------------------------------------
- -------------------------------------------------------------------------
RATIOS AND SUPPLEMENTAL DATA
Net Assets, End of Period (Thousands). . . . . . . . . .     $2,806
Ratio of Net Expenses to Average Net Assets. . . . . . .       0.80%*
Ratio of Net Investment Income to Average
   Net Assets. . . . . . . . . . . . . . . . . . . . . .       5.21%*
Portfolio Turnover Rate. . . . . . . . . . . . . . . . .         60%
- -------------------------------------------------------------------------
</TABLE>

*   Annualized
**  Commencement of Operations
+   Net of voluntarily waived fees and reimbursed expenses of $.06 per share for
    the period ended March 31, 1996.
++  Total return would have been lower had the Adviser not waived and assumed
    certain expenses during the period.
<PAGE>
                                   UAM FUNDS
                            UAM FUNDS SERVICE CENTER
                    C/O CHASE GLOBAL FUNDS SERVICES COMPANY
                                 P.O. BOX 2798
                             BOSTON, MA 02208-2798
                                 1-800-638-7983
 
- --------------------------------------------------------------------------------
 
                       BHM&S TOTAL RETURN BOND PORTFOLIO
                       INSTITUTIONAL SERVICE CLASS SHARES
         INVESTMENT ADVISER: BARROW, HANLEY, MEWHINNEY & STRAUSS, INC.
- --------------------------------------------------------------------------------
 
            PROSPECTUS -- APRIL 25, 1995 AS REVISED OCTOBER 31, 1995
 
    The  BHM&S Total Return Bond Portfolio seeks  to provide a maximum long term
total return  consistent  with reasonable  risk  to principal  by  investing  in
investment grade fixed income securities of varying maturities. Income return is
expected  to  be a  predominant  portion of  the  Portfolio's total  return. Any
capital return on the Portfolio is dependent upon, among other factors, interest
rate changes as well as the average maturity and duration of the Portfolio.  The
Adviser  believes that by investing in undervalued securities with above average
effective yields and capital appreciation potential, the Portfolio will generate
superior returns over the long term while minimizing volatility and,  therefore,
downside  risk. There can  be no assurance  that the Portfolio  will achieve its
stated objective.
 
    The BHM&S  Total Return  Bond Portfolio  is one  of a  series of  investment
portfolios available through UAM Funds Trust (hereinafter defined as "UAM Funds"
or the "Fund"), an open-end investment company known as a "mutual fund." Each of
the  Portfolios that make  up the Fund have  different investment objectives and
policies. In  addition, several  of  the Fund's  Portfolios offer  two  separate
classes  of shares, Institutional  Class Shares and  Institutional Service Class
Shares ("Service Class Shares"). Shares of each class represent equal, pro  rata
interests in a Portfolio and accrue dividends in the same manner except that the
Service Class Shares bear fees payable by the class (at the maximum rate of .25%
per  annum) to financial institutions for services they provide to the owners of
such shares. The BHM&S Total Return Bond Portfolio currently offers two  classes
of shares. The securities offered in this Prospectus are Service Class Shares of
the BHM&S Total Return Bond Portfolio.
 
    Please   keep  this  Prospectus  for  future  reference  since  it  contains
information that you should understand before  you invest. You may also wish  to
review  the  BHM&S  Total  Return  Bond  Portfolio's  "Statement  of  Additional
Information" dated April 25, 1995, as revised October 31, 1995, which was  filed
with  the  Securities  and  Exchange Commission  and  has  been  incorporated by
reference into this Prospectus. (It is legally  considered to be a part of  this
Prospectus.)  Please call or  write UAM Funds  at the above  address to obtain a
free copy of this Statement.
 
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 OF  THIS PROSPECTUS. ANY
               REPRESENTATION TO THE CONTRARY IS A CRIMINAL OFFENSE.
<PAGE>
                               TABLE OF CONTENTS
 
<TABLE>
<CAPTION>
                                                                 PAGE
                                                                 ----
 <S>                                                             <C>
 Fees and Expenses...........................................       1
 
 Summary: About the Portfolio................................       2
 
 Risk Factors................................................       2
 
 Performance Calculations....................................       3
 
 Details on Investment Policies..............................       3
 
 Buying, Selling and Exchanging Shares.......................       8
 
 Service and Distribution Plans..............................      12
 
 How Share Prices are Determined.............................      13
 
 Dividends, Capital Gains Distributions and Taxes............      13
 
 Fund Management and Administration..........................      14
 
 General Fund Information....................................      17
</TABLE>
<PAGE>
                               FEES AND EXPENSES
 
    Investors will be charged various fees and expenses incurred in managing the
BHM&S Total Return Bond Portfolio ("the Portfolio") including:
 
    SHAREHOLDER  TRANSACTION EXPENSES:  These are  the costs entailed in buying,
selling or exchanging  shares of the  Portfolio. The Portfolio  does not  charge
investors for shareholder transaction expenses. However, transaction fees may be
charged if you are a customer of a broker-dealer or other financial intermediary
who has established a shareholder servicing relationship with the Fund on behalf
of  their  customers. Please  see "Buying,  Selling  and Exchanging  Shares" for
further information.
 
<TABLE>
<CAPTION>
                                                     SERVICE CLASS SHARES  INSTITUTIONAL CLASS SHARES
                                                     --------------------  --------------------------
 <S>                                                 <C>                   <C>
 Sales Load Imposed on Purchases:..................              NONE                      NONE
 Sales Load Imposed on Reinvested Dividends:.......              NONE                      NONE
 Deferred Sales Load:..............................              NONE                      NONE
 Redemption Fees:..................................              NONE                      NONE
 Exchange Fees:....................................              NONE                      NONE
</TABLE>
 
    ESTIMATED ANNUAL FUND OPERATING EXPENSES:   These expenses, which cover  the
cost of administration, marketing and shareholder communication, and are usually
quoted  as a percentage of  net assets, are factored  into the Portfolio's share
price and not billed directly to shareholders. They include:
 
<TABLE>
<CAPTION>
                                                     SERVICE CLASS SHARES   INSTITUTIONAL CLASS SHARES
                                                     --------------------   --------------------------
 <S>                                                 <C>                    <C>
 Investment Advisory Fees:.........................          0.35%                    0.35%
 Administrative Fees:..............................          0.13%                    0.13%
 12b-1 Fees: (Including Shareholder Servicing
  Fees)+:..........................................          0.25%                     NONE
 Other Expenses:...................................          0.22%                    0.22%
 Advisory Fees Waived..............................         (0.15)%                  (0.15)%
                                                            -----                  -------
 Total Operating Expenses:.........................          0.80%*                   0.55%**
                                                            -----                  -------
                                                            -----                  -------
</TABLE>
 
- ------------------------
 +See "Service and Distribution Plans."
 *Barrow, Hanley, Mewhinney & Strauss, Inc., the Adviser, has voluntarily agreed
  to waive a portion  of its advisory  fees and to assume  as the Adviser's  own
  expense  certain  operating expenses  otherwise payable  by the  Portfolio, if
  necessary, in  order  to  keep  the Portfolio's  Service  Class  Shares  total
  operating expenses (excluding interest, taxes and extraordinary expenses) from
  exceeding  0.80% of its average daily net assets through December 31, 1997. It
  is estimated that without the Adviser's fee waiver the total annual  operating
  expenses of the Portfolio's Service Class Shares would be 0.95% of its average
  daily net assets.
**The  Adviser has also  voluntarily agreed to  waive a portion  of its advisory
  fees and to  assume as the  Adviser's own expense  certain operating  expenses
  otherwise  payable  by  the Portfolio,  if  necessary,  in order  to  keep the
  Portfolio's Institutional Class Shares'  total annual operating expenses  from
  exceeding  0.55% of its average daily net assets through December 31, 1997. It
  is estimated that without the Adviser's fee waiver the total annual  operating
  expenses  of the Portfolio's Institutional Class  Shares would be 0.70% of its
  average daily net assets.
 
    The fees  and  expenses  set  forth above  are  estimated  amounts  for  the
Portfolio's  first year of  operations assuming average daily  net assets of $25
million.
 
    The Adviser will not be reimbursed by  the Fund for any advisory fees  which
are waived or expenses which the Adviser may bear on behalf of the Portfolio.
 
    Investors  can get a  better idea of how  the Portfolio's operating expenses
will affect their own  investments by examining the  following chart. The  chart
shows  how much a hypothetical investor would  pay in expenses, assuming that he
or she made an initial investment of  $1,000, earned a 5% annual rate of  return
and redeemed his or her investment at the end of the time period indicated.
 
<TABLE>
<CAPTION>
                                                               1 YEAR   3 YEARS
                                                               ------   -------
 <S>                                                           <C>      <C>
 Service Class Shares........................................    $8       $26
 Institutional Class Shares..................................    $6       $18
</TABLE>
 
THIS  EXAMPLE  SHOULD  NOT BE  CONSIDERED  A  REPRESENTATION OF  PAST  OR FUTURE
EXPENSES OR PERFORMANCE.  ACTUAL EXPENSES MAY  BE GREATER OR  LESSER THAN  THOSE
SHOWN ABOVE.
 
NOTE TO EXPENSE TABLE
 
    Service  Organizations  may charge  other fees  to  their customers  who are
beneficial owners of shares of the  Portfolio in connection with their  customer
accounts. (See "Service and Distribution Plans.")
 
                                       1
<PAGE>
                       SUMMARY: ABOUT THE PORTFOLIO . . .
 
OBJECTIVE:
 
    The  Portfolio seeks to provide a  maximum long term total return consistent
with reasonable risk to principal by investing in investment grade fixed  income
securities  of varying maturities. Income return is expected to be a predominant
portion of the Portfolio's total return. Any capital return on the Portfolio  is
dependent  upon,  among others  factors, interest  rate changes  as well  as the
average maturity and duration of the Portfolio.
 
    The Adviser believes that by investing in undervalued securities with  above
average  effective yields and capital appreciation potential, the Portfolio will
generate superior returns over  the long term,  while minimizing volatility  and
therefore downside risk.
 
    There  can  be  no assurance  that  the  Portfolio will  achieve  its stated
objective.
 
HOW IS THE PORTFOLIO MANAGED?
 
    Barrow, Hanley, Mewhinney &  Strauss, Inc. ("the  Adviser") seeks to  reduce
the  risk that is inherent in the  fast-changing bond market while adding to the
return  available  from  a  bond  market  index.  (See  "Details  on  Investment
Policies.")
 
WHO MANAGES THE PORTFOLIO?
 
    The  Adviser is a  registered investment adviser  specializing in the active
management of stock, bond and balanced portfolios for institutional,  tax-exempt
clients.  Founded in 1979, the firm is a wholly-owned subsidiary of United Asset
Management Corporation. The Adviser  currently has $15  billion in assets  under
management. (See "Fund Management and Administration.")
 
WHO SHOULD INVEST IN THE PORTFOLIO?
 
    The  Portfolio is suitable  for investors who seek  high current income from
their  investments  and  who  wish  to  have  moderate  exposure  to   principal
fluctuation. (See "Retirement Plans.")
 
HOW TO INVEST
 
    The  Fund offers shares of beneficial interest of the Portfolio to investors
without a sales commission at net asset value next determined after the purchase
order is received in proper form. Share  purchases may be made through UAM  Fund
Distributors,  Inc., broker-dealers  and financial intermediaries  or by sending
investments directly  to  the  Fund.  The minimum  initial  investment  for  the
Portfolio  is $1,000,000; the minimum for  subsequent investments is $1,000. The
officers of  the Fund  may make  certain exceptions  to the  minimum  investment
amounts. (See "Buying, Selling and Exchanging Shares.")
 
DIVIDENDS AND DISTRIBUTIONS
 
    The  Portfolio  will  normally  distribute  substantially  all  of  its  net
investment income in the form of  quarterly dividends. Any realized net  capital
gains will also be distributed annually. Distributions will be reinvested in the
Portfolio's  shares  automatically unless  an  investor elects  to  receive cash
distributions. (See "Dividends, Capital Gains Distributions and Taxes.")
 
HOW TO REDEEM
 
    Shares of the Portfolio  may be redeemed  on any business  day when the  New
York  Stock Exchange ("NYSE") is  open, without cost, at  the net asset value of
the Portfolio  next determined  after  receipt of  the redemption  request.  The
Portfolio's  share  price will  fluctuate with  market and  economic conditions.
Therefore, your investment  may be worth  more or less  when redeemed than  when
purchased. (See "Buying, Selling and Exchanging Shares.")
 
                                  RISK FACTORS
 
    Investing  in the  Portfolio entails  a number  of risks.  As with  any bond
investment, shares of the Portfolio will rise in value when interest rates  fall
and  vice versa.  In addition,  you should  consider the  following factors that
could effect the Portfolio's rate of return:
 
    - The fixed income  securities held  by the  Portfolio will  be affected  by
      general  changes in interest rates resulting  in increases or decreases in
      the value of the securities. The  value of fixed income securities can  be
      expected  to vary inversely  to the changes  in prevailing interest rates,
      i.e., as  interest  rates  decline,  the  market  value  of  fixed  income
      securities tends to increase and vice versa.
 
                                       2
<PAGE>
    - The  Portfolio may purchase securities on a when-issued basis which do not
      earn interest until issued and may  decline or appreciate in market  value
      prior to their delivery to the Portfolio.
 
    - The  Portfolio  will  invest  in  investment  grade  debt  securities, but
      reserves the right to hold  securities that have been downgraded.  Adverse
      economic  and corporate changes  and changes in interest  rates may have a
      greater impact  on  issuers  of  lower rated  debt  securities  which  the
      Portfolio  may hold,  which may  lead to  greater price  volatility. Also,
      lower rated securities may be more  difficult to value accurately or  sell
      in the secondary market.
 
    - The  Portfolio may invest in repurchase  agreements which entail a risk of
      loss should the seller default on its transaction.
 
    - The Portfolio may lend its investment  securities which entails a risk  of
      loss should a borrower fail financially.
 
    Further information about these risk factors is contained in the "Details on
Investment Policies" section of this Prospectus.
 
                            PERFORMANCE CALCULATIONS
 
    The  Portfolio measures performance  by calculating yield  and total return.
Both yield and total return figures are based on historical earnings and are not
intended to indicate future performance.
 
    Yield refers to the income generated by an investment in the Portfolio  over
a  given period  of time,  expressed as  an annual  percentage rate.  Yields are
calculated according to a standard that is required for all bond funds. As  this
differs from other accounting methods, the quoted yield may not equal the income
actually paid to shareholders.
 
    Total return is the change in value of an investment in the Portfolio over a
given  period,  assuming  reinvestment of  any  dividends and  capital  gains. A
cumulative or aggregate total return  reflects actual performance over a  stated
period  of time. An average annual total return is a hypothetical rate of return
that, if achieved annually, would have produced the same cumulative total return
if performance had been  constant over the entire  period. Average annual  total
returns  smooth out variations in  performance; they are not  the same as actual
year-by-year results.
 
    Performance will  be  calculated  separately  for  Institutional  Class  and
Service   Class  Shares.  Dividends  paid  by  the  Portfolio  with  respect  to
Institutional Class and Service  Class Shares, to the  extent any dividends  are
paid, will be calculated in the same manner at the same time on the same day and
will  be  in the  same  amount, except  that  service fees  and  any incremental
transfer agency costs relating to Service Class Shares will be borne exclusively
by that class.  The Fund will  include performance data  for both  Institutional
Class  and  Service  Class  Shares  of the  Portfolio  in  any  advertisement or
information including performance data of the Portfolio.
 
    The Portfolio's performance may be compared to data prepared by  independent
services which monitor the performance of investment companies, data reported in
financial and industry publications, and various indices as further described in
the Portfolio's Statement of Additional Information.
 
    Since  this  is a  new Portfolio,  we  can offer  no information  about past
portfolio investment performance. When  this information becomes available,  you
will  find  it,  together  with  comparisons  to  appropriate  indices,  in  the
Portfolio's Annual Report to Shareholders, which may be obtained without charge.
 
    Write to "UAM Funds" at the address on the front cover of this Prospectus or
call  1-800-638-7983  to  obtain  your  free  copy  of  the  Annual  Report   to
Shareholders.
 
                         DETAILS ON INVESTMENT POLICIES
 
INVESTMENT STRATEGY
 
    The  Portfolio seeks to achieve  its objective by investing  at least 90% of
its total assets in a diversified portfolio of the following  dollar-denominated
investment  grade issues  of varying  maturities: U.S.  Treasuries and Agencies;
zero coupon  obligations; mortgage-backed  securities; asset-backed  securities;
corporate  bonds;  municipal bonds;  and  domestic, Yankeedollar  and Eurodollar
bonds. These issues  may have  fixed, variable  or floating  rates of  interest.
Therefore,  10% or less  of the Portfolio's  assets will be  invested in various
short-term investments. Please
 
                                       3
<PAGE>
see "Short-Term Investments" for a list  of the short-term instruments in  which
the  Portfolio may invest. As a matter of policy, the Adviser does not intend to
invest in or utilize futures, options or other complex derivative instruments or
securities.
 
    The Adviser expects to  actively manage the Portfolio  in order to meet  the
investment  objective. To produce favorable returns,  the Adviser will invest in
securities that it  believes to  be undervalued, generating  an effective  yield
advantage versus the market. To control the volatility of returns, the Portfolio
will  exhibit a high current  yield, a high quality  and a conservative maturity
structure.
 
    The Adviser's  decision process  will focus  on security  selection,  sector
concentration  and  yield  curve positioning.  The  Adviser will  not  engage in
economic forecasts in  an attempt to  "time the market"  since it believes  that
there  are  too  many  economic  and  political  variables  on  a  domestic  and
international basis to do so successfully on a consistent basis. Therefore,  the
Portfolio will maintain a conservative maturity structure, with securities being
diversified  along the  yield curve.  The Portfolio's  average weighted maturity
will generally  be  ten  years  or less,  with  the  average  weighted  duration
comparable  to that of the Salomon  Brothers' Broad Investment Grade Index which
is approximately  five  years.  Duration compares  interest  rate  risk  between
securities  with different  coupons and  different maturities,  summarizing in a
single number the price sensitivity of a bond--how a bond's maturity and  coupon
rate   affect  its  exposure  to  interest  rate  risk.  Duration  involves  the
application of several principles: as the maturity of a bond increases, duration
increases; as the coupon of a bond increases, duration decreases; generally, the
lower the coupon payment, the higher the duration; and duration decreases as the
frequency of the coupon payment increases.
 
    The Adviser's security selection process begins by analyzing a bond's  yield
to maturity premium (or spread) versus the most recently issued U.S. Treasury of
similar  maturity. Having  identified bonds  with an  above-average premium, the
Adviser will then evaluate those factors  that will influence the bond's  future
premium  (i.e., credit quality, security structure, supply/demand relationships,
etc.). The objective  of this process  is to identify  those issues whose  yield
premium  will compress or  narrow over a  wide range of  potential interest rate
change, supporting superior long term performance. Furthermore, the Adviser will
concentrate the Portfolio's  holdings in  industry sectors  and maturity  ranges
that   it  believes   are  undervalued   while  seeking   a  prudent   level  of
diversification.
 
    The investment grade  bonds in  which the  Portfolio will  invest are  those
having  one of the four highest rating  categories at the time of purchase (i.e.
Aaa, Aa, A or Baa by Moody's Investors Service, Inc. ("Moody's) or AAA, AA, A or
BBB by  Standard &  Poor's Corporation  ("S&P")). Bonds  rated Baa  or BBB  have
speculative  characteristics and may be more sensitive to changes in the economy
and the financial condition of issuers than higher rated bonds. The Adviser also
reserves the right to retain securities which  are downgraded by one or both  of
the  rating agencies if, in the Adviser's judgement, retention of the securities
is  warranted.  Please  refer  to   the  Portfolio's  Statement  of   Additional
Information for a more detailed description of bond ratings.
 
MORTGAGE-BACKED SECURITIES
 
    Mortgage-backed   securities  are  collateralized   by  pools  of  mortgages
assembled for subsequent sale to investors by various governmental agencies  and
sponsored  organizations as  well as by  private issuers.  The underlying assets
collateralizing  the  mortgage-backed  securities  may  include   single-family,
multifamily   and   commercial  properties.   The   two  fundamental   forms  of
mortgage-backed  securities  are   pass-throughs  and  collateralized   mortgage
obligations  ("CMOs"). Pass-throughs  produce monthly payments  of principal and
interest from the  underlying mortgages.  CMOs divide the  cash flows  generated
from the underlying mortgages or mortgage pass-through securities into different
segments  known as "tranches"  which are then retired  sequentially over time in
order of priority. The market value and yield of mortgage-backed securities will
fluctuate due  to market  interest  rate change  and  early prepayments  of  the
underlying  mortgages.  As  prepayment rates  on  mortgages vary  widely,  it is
difficult to accurately  predict the average  maturity of a  particular pool  of
mortgages  or tranches  of CMOs.  Although mortgage-backed  securities may offer
higher  yields   than  those   available  from   other  types   of   securities,
mortgage-backed  securities may be less effective than other types of securities
as a means of "locking in" an attractive rate for an extended period because  of
the  prepayment feature. The majority of  the mortgage-backed securities held by
the Portfolio will carry a  guarantee from an agency  of the U.S. Government  of
the eventual payment of principal and interest.
 
ASSET-BACKED SECURITIES
 
    Asset-backed  securities are collateralized by  short maturity loans such as
automobile receivables, credit card receivables,  other types of receivables  or
assets.  Credit  support  for  asset-backed  securities  may  be  based  on  the
 
                                       4
<PAGE>
underlying assets and/or provided through credit enhancements by a third  party.
Credit  enhancement  techniques  include  letters  of  credit,  insurance bonds,
limited guarantees  (which  are  generally  provided  by  the  issuer),  senior-
subordinated structures and over-collateralization.
 
YANKEEDOLLAR AND EURODOLLAR SECURITIES
 
    Yankeedollar  securities are U.S. dollar-based obligations issued inside the
United States by foreign entities.  Eurodollar securities are U.S.  dollar-based
obligations  issued outside the  United States by  domestic or foreign entities.
Investment in these  securities involve  certain risks which  are not  typically
associated  with investing in  domestic securities. For  example, non U.S.-based
issuers are not subject to the same accounting, auditing and financial reporting
standards  as  are  domestic  issuers.  There  may  be  less  publicly-available
information  about non-U.S.-based  issuers which may  make it  difficult to make
investment decisions.  Political factors  may  have an  impact  in the  form  of
confiscatory  taxation, expropriation or  political instability in international
markets. Some foreign governments also  levy withholding taxes against  dividend
and  interest  income. Although  in some  countries  a portion  of the  taxes is
recoverable, the non-recovered portion of foreign withholding taxes will  reduce
the income the Portfolio receives from the companies comprising its investments.
 
WHEN-ISSUED, FORWARD DELIVERY AND DELAYED SETTLEMENT SECURITIES
 
    Occasionally,  the  Portfolio  will  invest in  securities  whose  terms and
characteristics are already known but which have not yet been issued. These  are
called  "when-issued" or "forward delivery" securities. Usually these securities
are purchased within a  month of their issue  date. "Delayed settlements"  occur
when  the Portfolio agrees to buy or sell securities at some time in the future,
making no payment until the transaction is actually completed.
 
    The Portfolio  will maintain  a separate  account of  cash, U.S.  Government
securities  or other high-grade debt obligations at  least equal to the value of
the purchase commitments until payment is made. Typically, no income accrues  on
securities  purchased on a delayed delivery basis  prior to the time delivery of
the securities is made although the  Portfolio may earn income on securities  it
has deposited in a segregated account.
 
    The Portfolio engages in these types of purchases in order to buy securities
that fit with its investment objective at attractive prices, not to increase its
investment leverage.
 
    Securities  purchased on  a when-issued basis  may decline  or appreciate in
market value prior to their actual delivery to the Portfolio.
 
MUNICIPAL OBLIGATIONS
 
    Municipal obligations include notes, bonds and other securities issued by or
on behalf of states, territories and possessions of the U.S. and the District of
Columbia and their political  subdivisions, agencies and instrumentalities.  The
interest  on such  municipal obligations  will normally  be exempt  from federal
income tax. These bonds may be general obligation bonds secured by the  issuer's
pledge  of its full faith, credit and  taxing power for the payment of principal
and interest,  or  they may  be  revenue  bonds payable  from  specific  revenue
sources, but not generally backed by the issuers taxing power. These obligations
may  include private activity  bonds where payment is  the responsibility of the
private industrial user of the facility  financed by the bonds. Municipal  notes
are  issued to  meet short-term funding  requirements of the  issuer and include
construction loan notes, short-term discount notes, tax-exempt commercial paper,
demand notes and similar instruments.  Municipal bonds will be rated  investment
grade  by Moody's and S&P, as  described above. Investment grade municipal notes
will be rated  MIG1, MIG2 or  MIG3 by  Moody's, or SP-1  or SP-2 by  S&P or,  if
unrated,  determined by the Adviser to be of comparable quality. Please refer to
the Portfolio's Statement of Additional  Information for a detailed  description
of municipal note ratings.
 
ZERO COUPON SECURITIES
 
    A  portion of the Portfolio may be  invested in zero coupon securities which
are fixed income securities that do not make regular interest payments. Instead,
zero coupon securities are sold at substantial discounts from their face  value.
The  difference between a zero coupon security's issue or purchase price and its
face value  represents  the  imputed  interest an  investor  will  earn  if  the
obligation  is  held  until  maturity.  Zero  coupon  securities  may  offer the
Portfolio the opportunity to earn higher yields than those available on ordinary
interest paying obligations of similar credit quality and maturity. However, the
prices of zero coupon securities may also exhibit greater price volatility  than
ordinary  fixed income securities because of the manner in which their principal
and interest are returned to the investor.
 
RESTRICTED AND ILLIQUID SECURITIES
 
    The Portfolio may purchase restricted securities that are not registered for
sale to  the general  public but  which  are eligible  for resale  to  qualified
institutional  investors  under  Rule  144A  of  the  Securities  Act  of  1933.
 
                                       5
<PAGE>
Under the supervision of  the Fund's Board of  Trustees, the Adviser  determines
the  liquidity of such investments by considering all relevant factors. Provided
that a dealer or institutional trading  market in such securities exists,  these
restricted securities are not treated as illiquid securities for purposes of the
Portfolio's  investment  limitations.  Certain  restrictions  applicable  to the
Portfolio limit its investment in securities that are illiquid by virtue of  the
absence  of  a  readily available  market  or  because of  legal  or contractual
restrictions on  resale to  no more  than  15% of  the Portfolio's  net  assets.
However,  the Portfolio does not intend to invest in private placements or other
illiquid securities.  The prices  realized from  the sales  of these  securities
could  be less than those originally paid by the Portfolio or less than what may
be considered the fair value of such securities.
 
OTHER INVESTMENT POLICIES
 
    The Portfolio may  also invest  in the following  securities and  investment
techniques:
 
SHORT-TERM INVESTMENTS
 
    Under  normal circumstances,  the Portfolio  may invest  10% or  less of its
assets in short-term investments in order to earn a return on uninvested  assets
or  to meet  anticipated redemptions.  The short-term  investments in  which the
Portfolio  will  invest   are  domestic  money   market  instruments   including
certificates  of deposit,  bankers acceptances,  time deposits,  U.S. Government
obligations,  U.S.  Government  agency  securities,  short-term  corporate  debt
securities,  and commercial paper rated A-1 or  A-2 by S&P or Prime-1 or Prime-2
by Moody's  or,  if unrated,  determined  by the  Adviser  to be  of  comparable
quality. Please refer to the Portfolio's Statement of Additional Information for
a detailed description of commercial paper ratings.
 
REPURCHASE AGREEMENTS
 
    The  Portfolio may invest up  to 10% of its  assets in repurchase agreements
collateralized by U.S. Government  securities, certificates of deposit,  bankers
acceptances  and other short-term securities as outlined above under "Short-Term
Investments." In a repurchase agreement, the Portfolio purchases a security and,
at the  same  time, arranges  to  sell  it back  to  the original  seller  on  a
predetermined  date. The repurchase  agreement states the  price that the seller
will pay for the security plus the interest rate that the purchaser will receive
while holding it. In effect, the Portfolio is lending its funds to the seller at
an agreed upon  interest rate  and receiving a  security as  collateral for  the
loan. Repurchase agreements can range from overnight to a fixed term. They are a
common way to earn interest on short-term funds.
 
    The  seller under  a repurchase agreement  will be required  to maintain the
value of  the securities  subject to  the agreement  at not  less than  (1)  the
repurchase  price if such securities mature in one  year or less, or (2) 101% of
the repurchase  price if  such securities  mature  in more  than one  year.  The
Administrator  and  the Adviser  will  mark to  market  daily the  value  of the
securities purchased, and the Adviser will, if necessary, require the seller  to
maintain  additional securities to  ensure that the value  is in compliance with
the previous sentence.
 
    There are  some  risks involved  in  repurchase agreements.  If  the  seller
defaults  on its  agreement to buy  back the  securities and the  value of those
securities falls, the Portfolio may incur losses in selling these securities  on
the open market. Also, if the seller enters bankruptcy, the bankruptcy court may
decide  that  the  securities  are  collateral not  within  the  control  of the
Portfolio and therefore are  subject to sale by  the trustee in the  bankruptcy.
Finally,  it  is  possible that  the  Portfolio may  not  be able  to  prove its
ownership of the underlying  securities. The Adviser  believes that these  risks
can be controlled by carefully reviewing the securities involved in a repurchase
agreement as well as the credit rating of the other party in the transaction.
 
LENDING OF PORTFOLIO SECURITIES
 
    The  Portfolio may lend its investment securities to qualified institutional
investors  who  need  to  borrow   securities  in  order  to  complete   certain
transactions,  such  as  covering  short  sales,  avoiding  failures  to deliver
securities or  completing  arbitrage operations.  The  Portfolio will  not  loan
portfolio  securities to the extent that greater than one-third of its assets at
fair market  value  would be  committed  to  loans. By  lending  its  investment
securities, the Portfolio attempts to increase its income through the receipt of
interest  on the loan.  Any gain or loss  in the market  price of the securities
loaned that might occur during the term of the loan would be for the account  of
the  Portfolio. The  Portfolio may lend  its investment  securities to qualified
brokers, dealers, domestic and foreign banks or other financial institutions, so
long as the terms, the structure and the aggregate amount of such loans are  not
inconsistent  with the  Investment Company Act  of 1940, as  amended, (the "1940
Act") or the  Rules and  Regulations or  interpretations of  the Securities  and
Exchange  Commission (the "Commission") thereunder, which currently require that
(a) the borrower pledge and maintain with the Portfolio collateral consisting of
cash, an  irrevocable  letter  of credit  issued  by  a domestic  U.S.  bank  or
securities  issued or guaranteed  by the U.S.  Government having a  value at all
times not  less  than 100%  of  the value  of  the securities  loaned,  (b)  the
 
                                       6
<PAGE>
borrower  add to  such collateral  whenever the  price of  the securities loaned
rises (i.e., the borrower "marks to the market" on a daily basis), (c) the  loan
be  made  subject to  termination  by the  Portfolio at  any  time, and  (d) the
Portfolio receives  reasonable  interest on  the  loan (which  may  include  the
Portfolio   investing  any  cash  collateral   in  interest  bearing  short-term
investments).   All   relevant   facts   and   circumstances,   including    the
creditworthiness  of the  broker, dealer or  institution, will  be considered in
making decisions with respect to the lending of securities, subject to review by
the Fund's Board of Trustees.
 
    At the present  time, the  Staff of  the Commission  does not  object if  an
investment  company pays  reasonable negotiated  fees in  connection with loaned
securities so long as such fees are set forth in a written contract and approved
by the investment company's  Board of Trustees. In  addition, voting rights  may
pass  with the loaned  securities, but if  a material event  occurs affecting an
investment on a loan, the loan must be called and the securities voted.
 
PORTFOLIO TURNOVER
 
    This Portfolio is managed for long-term appreciation rather than  short-term
trading  profits. As a result,  the Adviser seeks to  keep portfolio turnover as
low as possible  depending on  market conditions  and generally  below 150%.  (A
turnover  rate of 100% would mean that  all securities in the Portfolio would be
replaced within  a  one-year  period.)  Occasionally,  when  the  market  shifts
suddenly  or when the prospects for individual bonds change quickly, the Adviser
may find it necessary to  sell securities which have  not been in the  Portfolio
for  very long. High  rates of portfolio turnover  necessarily result in heavier
brokerage and portfolio  trading costs which  is paid by  the Portfolio.  Higher
rates  of turnover may result in the realization of capital gains. To the extent
net short-term capital gains are realized, any distributions resulting from such
gains are  considered  ordinary income  for  federal income  tax  purposes.  The
Portfolio  will not normally  engage in short-term trading,  but it reserves the
right to do so.
 
INVESTMENT LIMITATIONS
 
    To help reduce the Portfolio's exposure  to risk in specific situations,  it
has  adopted certain limitations associated  with its investments and investment
practices. These  policies  and  limitations  are  considered  at  the  time  of
purchase.  The sale of instruments is not  required in the event of a subsequent
change in circumstances.
 
    The Portfolio's limitations are as follows:
 
    (a) With respect to 75% of its assets,  the Portfolio may not own more  than
        5% of the securities of any single issuer (other than investments issued
        or  guaranteed  by  the  U.S.  Government  or  any  of  its  agencies or
        instrumentalities);
 
    (b) With respect to 75% of its assets,  the Portfolio may not own more  than
        10% of the outstanding voting securities of any one issuer;
 
    (c) The Portfolio may not invest more than 5% of its assets in securities of
        issuers  (other  than securities  issued or  guaranteed  by the  U.S. or
        foreign governments  or their  political subdivisions)  that have  (with
        predecessors) less than 3 years of continuous operation;
 
    (d) The  Portfolio may not invest  more than 25% of  its assets in companies
        within  a  single  industry;  however,  there  are  no  limitations   on
        investments  made  in  instruments  issued  or  guaranteed  by  the U.S.
        Government and its agencies;
 
    (e) The Portfolio may not make loans except by purchasing debt securities in
        accordance with its investment objective  and policies or entering  into
        repurchase  agreements or by lending  its portfolio securities to banks,
        brokers, dealers or other  financial institutions as  long as the  loans
        are  made in compliance with the 1940 Act and the rules, regulations and
        interpretations of the Commission;
 
    (f) The  Portfolio  may  not  borrow  except  from  banks  in  extraordinary
        circumstances  for temporary  or emergency purposes.  In this situation,
        the Portfolio may not (1) borrow more  than 33 1/3% of its gross  assets
        and  (2) cannot buy additional securities if  it borrows more than 5% of
        its total assets; and
 
    (g) Pledge, mortgage or hypothecate more than 33 1/3% of its total assets at
        fair market value.
 
    The Portfolio's investment  objective and investment  limitations (a),  (b),
(d),  (e) and (f)(1)  listed above are  fundamental policies and  may be changed
only with  the  approval  of  the  holders of  a  majority  of  the  outstanding
 
                                       7
<PAGE>
voting  securities of the Portfolio.  The other investment limitations described
here and  those not  specified as  fundamental in  the Statement  of  Additional
Information  as well as the Portfolio's investment policies are not fundamental,
and the Fund's Board of Trustees may change them without shareholder approval.
 
PORTFOLIO TRANSACTIONS
 
    The Portfolio's  Investment Advisory  Agreement  authorizes the  Adviser  to
select  the brokers  or dealers  that will  execute the  purchases and  sales of
investment securities for the  Portfolio. The Agreement  directs the Adviser  to
use  its best  efforts to  obtain the  best available  price and  most favorable
execution for all the Portfolio's transactions.
 
    It is not  the Fund's  practice to  allocate brokerage  or effect  principal
transactions  with dealers  on the basis  of sales  of shares which  may be made
through broker-dealer firms.  However, the  Adviser may  place Portfolio  orders
with  qualified broker-dealers who recommend the  Portfolio or who act as agents
in the purchase of shares of the Portfolio for their clients.
 
    Some securities  considered for  investment  by the  Portfolio may  also  be
appropriate  for other clients served  by the Adviser. If  a purchase or sale of
securities consistent with  the investment policies  of a Portfolio  and one  or
more  of these other clients served by the Adviser is considered at or about the
same time, transactions in such securities will be allocated among the Portfolio
and clients in  a fair  and reasonable manner.  Although there  is no  specified
formula for allocating such transactions, the various allocation methods used by
the  Adviser, and the result of such allocations, are subject to periodic review
by the Fund's Board of Trustees.
 
                     BUYING, SELLING AND EXCHANGING SHARES
 
    Service Class  Shares of  the Portfolio  may be  purchased without  a  sales
commission directly through UAM Fund Distributors, Inc. (the "Distributor"), and
through   broker-dealers,  registered   representatives,  and   other  financial
intermediaries ("Service Organizations") having  selling or shareholder  service
agreements  with the  Distributor. The  shares are sold  at net  asset value per
share next  determined after  an order  is received  by the  Fund or  designated
Service  Organization.  (See "Service  and  Distribution Plans"  and  "How Share
Prices are  Determined.") The  minimum initial  investment is  $1,000,000,  with
certain exceptions determined from time to time by the officers of the Fund. The
minimum for subsequent investments is $1,000.
 
    The  Portfolio issues two classes of shares: Institutional Class and Service
Class. The two classes of shares each represent interests in the same  portfolio
of  investments, have the same rights and  are identical in all respects, except
that the  Service  Class Shares  offered  by this  Prospectus  bear  shareholder
servicing  expenses, may in the future bear distribution plan expenses, and have
exclusive voting  rights  with  respect  to the  Rule  12b-1  Distribution  Plan
pursuant  to  which the  distribution  fee may  be  paid. The  two  classes have
different exchange privileges. (See  "How to Exchange  Shares.") The net  income
attributable  to Service Class Shares and the dividends payable on Service Class
Shares  will  be  reduced  by  the  amount  of  the  shareholder  servicing  and
distribution  fees; accordingly, the net asset value of the Service Class Shares
will be reduced by such amount to the extent the Portfolio has undistributed net
income.
 
    Certain Service  Organizations may  have established  shareholder  servicing
relationships  with  the  Fund  on  behalf  of  their  customers.  Those Service
Organizations may impose  additional or  different conditions  or other  account
fees   on  the  purchase  and  redemption  of  Portfolio  shares.  Each  Service
Organization is responsible for transmitting to its customers a schedule of  any
such  fees  and information  regarding  any additional  or  different conditions
regarding purchases and redemptions. Shareholders  who are customers of  Service
Organizations   should  consult  their   Service  Organization  for  information
regarding these  fees and  conditions. Some  Service Organizations  may  receive
compensation  from the Fund, the Fund's Distributor,  the Adviser, or any of the
Adviser's affiliates. A  salesperson and  any other person  entitled to  receive
compensation  for selling  or servicing  Portfolio shares  may receive different
compensation with respect to one particular class of shares over another in  the
Fund.
 
    Service  Organizations  may enter  confirmed  purchases on  behalf  of their
customers. If  you buy  shares of  the  Portfolio in  this manner,  the  Service
Organization  must receive your investment order  before the close of trading on
the NYSE,  generally 4:00  p.m. (Eastern  Time) and  transmit it  to the  Fund's
Transfer Agent (prior to the close of the Transfer Agent's business day) and the
Distributor to receive that day's share price with proper payment to the Fund to
follow.  Proper payment for the order must  be received by the Transfer Agent no
later than the time
 
                                       8
<PAGE>
when  the  Portfolio  is   priced  on  the   following  business  day.   Service
Organizations  are  responsible  to their  customers,  the Fund  and  the Fund's
Distributor for timely transmission of all subscription and redemption requests,
investment information, documentation and money
 
HOW TO BUY SHARES BY MAIL
 
    An  account  may  also  be  opened  with  the  assistance  of  your  Service
Organization  by completing and signing an Account Registration Form. We require
an original signature  on both  copies. The  original copy  should be  forwarded
together  with  a  check  payable  to  UAM  Funds  Trust,  through  your Service
Organization, to:
 
                                   UAM Funds
                            UAM Funds Service Center
                    c/o Chase Global Funds Services Company
                                 P.O. Box 2798
                             Boston, MA 02208-2798
 
    Mail the other copy, without the check, to:
 
                          UAM Fund Distributors, Inc.
                      One International Place, 44th Floor
                               100 Oliver Street
                                Boston, MA 02110
 
    To make additional investments to  an account you have already  established,
simply  mail your check directly or through your Service Organization to the UAM
Funds Service Center at the address  above. Make sure that your account  number,
account  name, and the name of the Portfolio and the name of the class of shares
are clearly indicated on the check so that we can properly credit your account.
 
    For both initial and additional investments, your funds will be credited  to
your account at the next share price calculated for the Portfolio after receipt.
Investments  received by 4 p.m.  will be invested at  the share price calculated
after the market closes on the same day. (For example, if your check arrives  on
Tuesday  morning, you  will purchase  shares at  the price  calculated after the
market close on Tuesday.)
 
HOW TO BUY SHARES BY WIRE
 
    To make  an initial  investment by  wire, your  Service Organization  should
telephone  the Fund's Transfer Agent (toll-free 1-800-638-7983), and provide the
account  name,   address,  telephone   number,  social   security  or   taxpayer
identification  number, the  name of the  Portfolio (Service  Class), the amount
being wired and the name of the bank wiring the funds. (Investors with  existing
accounts  should notify the Fund prior to  wiring funds.) An account number will
then be provided to you.
 
    Once you have an account number, call your bank and instruct them to wire  a
specified  amount to the Fund's custodian,  Morgan Guaranty Trust Company of New
York ("Custodian Bank"). You will be asked to provide the following information:
 
                   Morgan Guaranty Trust Company of New York
                               New York, NY 10015
                                ABA# 0210-0023-8
                             DDA Acct. #001-73-353
                             F/B/O UAM Funds Trust
         Ref: BHM&S Total Return Bond Portfolio (Service Class Shares)
              Your account number: ______________________________
               Your account name: ______________________________
 
    After you have instructed  the bank to  wire the money,  you must forward  a
completed  Account Registration  Form to  your Service  Organization or  the UAM
Funds Service Center as soon  as possible. You can  obtain forms by calling  the
UAM  Funds Service  Center at  1-800-638-7983. Federal  Funds purchases  will be
accepted only  on  days when  the  NYSE and  the  Custodian Bank  are  open  for
business.
 
    Once  you have made the  initial purchase, you may  buy additional shares by
wire at any time  by following the instructions  above. On all wired  purchases,
funds  will be  invested at  the share  price calculated  after the  next market
close.
 
                                       9
<PAGE>
OTHER PURCHASE INFORMATION
 
    Non-securities dealer  Service Organizations  may receive  transaction  fees
that are the same as distribution fees paid to dealers.
 
    The Fund reserves the right, in its sole discretion, to suspend the offering
of  shares or reject purchase orders of  the Portfolio when, in the judgement of
management, such suspension or rejection is in the best interests of the Fund.
 
    Purchases of shares will be made in full and fractional shares calculated to
three decimal places. In the  interest of economy and convenience,  certificates
for  shares will not be issued except at the written request of the shareholder.
Certificates for fractional shares, however, will not be issued.
 
IN-KIND PURCHASES
 
    Under certain circumstances,  investors who  own securities may  be able  to
exchange  them directly  for shares  of the  Portfolio without  converting their
investments into cash first.  The Portfolio will  accept such in-kind  purchases
only  if the  securities offered  for exchange  meet the  Portfolio's investment
criteria which are set forth in the "Details on Investment Policies" section  of
this  Prospectus. Once accepted, the securities  will be valued according to the
process described in  "How Share  Prices are Determined"  at the  same time  the
Portfolio's  shares are valued.  Once a value  has been determined  for both, an
exchange will be made.  All dividends, interest,  subscription, or other  rights
pertaining  to these securities  become the Fund's property;  if you receive any
such items, you must deliver them  to the Fund immediately. Securities  acquired
by the Portfolio through an in-kind purchase will be acquired for investment and
not for resale.
 
    The  Fund  will not  accept  securities for  exchange  unless they  meet the
following criteria:
 
        - The securities are eligible to be included in the Portfolio and
          market quotes can readily be obtained for them.
 
        - The investor  assures  the Fund  that  the securities  are  not
          subject to any restrictions under the Securities Act of 1933 or
          any other law or regulation.
 
        - The  value of  the securities  exchanged does  not increase the
          Portfolio's position in any specific issuer's security to  more
          than 5% of the Portfolio's total net assets.
 
    For  tax purposes, the  IRS generally treats any  exchange of securities for
Portfolio shares as a sale  of the securities. This  means that if you  exchange
securities  which  have appreciated  in value  since you  bought them,  you will
realize capital gains and incur a tax  liability. If you are interested in  such
an  exchange, we suggest you  discuss any potential tax  liability with your tax
adviser before proceeding.
 
RETIREMENT PLANS
 
    The Portfolio is also suitable for individual tax-deferred retirement  plans
including 401(k) Defined Contribution Plans and IRA Contributions or Rollovers.
 
HOW TO SELL SHARES
 
    You  may sell shares by telephone or mail  at any time, free of charge. Your
shares will  be  valued at  the  next price  calculated  after we  receive  your
instructions to sell.
 
    Your request should be addressed to:
 
                            UAM Funds Service Center
                    c/o Chase Global Funds Services Company
                                 P.O. Box 2798
                             Boston, MA 02208-2798
 
or to your Service Organization.
 
BY MAIL
 
    To redeem by mail, you should include the following:
 
        - your share certificates, if we have issued them to you;
 
        - a  letter which tells us how many shares you wish to redeem or,
          alternatively, what dollar amount you wish to receive;
 
                                       10
<PAGE>
        - a signature guaranteed by your bank, broker or other  financial
          institution (see "Signature Guarantees" below); and
 
        - any  other necessary legal  documents, in the  case of estates,
          trusts, guardianships,  custodianships,  corporations,  pension
          and profit-sharing plans and other organizations.
 
    If  you are not sure  which documents to send,  please contact the UAM Funds
Service Center at 1-800-638-7983.
 
BY TELEPHONE
 
    To  redeem  shares  by  telephone,  you  must  have  completed  an   Account
Registration  Form and have returned it to the  Fund. Once this form is on file,
simply call the Fund and  request the redemption amount to  be mailed to you  or
wired  to  your  bank.  The  Fund and  the  Fund's  Transfer  Agent  will employ
reasonable precautions  to  make  sure that  the  instructions  communicated  by
telephone   are  genuine.  You  will  be   asked  to  provide  certain  personal
identification when you open an account, and again, when you request a telephone
redemption. In addition,  all telephone transaction  requests will be  recorded,
and   investors  may  be  required  to  provide  additional  telecopied  written
instructions of such  transaction requests.  Neither the Fund  nor the  Transfer
Agent will be responsible for any loss, additional cost or expense for following
instructions  received by telephone that it  reasonably believes are genuine. To
change the name  of the  commercial bank or  the account  designated to  receive
redemption  proceeds, a written request must be  sent to the Fund at the address
on the cover of this Prospectus. Requests to change the bank or account must  be
signed  by each shareholder,  and each signature must  be guaranteed. You cannot
redeem shares by  telephone if  you hold  stock certificates  for these  shares.
Please  contact one of the Fund's  representatives at 1-800-638-7983 for further
details.
 
SIGNATURE GUARANTEES
 
    To protect your account, the Fund and the Fund's Transfer Agent from  fraud,
signature  guarantees are required for certain redemptions. Signature guarantees
are used to verify that the person who authorizes a redemption is, in fact,  the
registered shareholder. They are required whenever you:
 
        - redeem  shares and request that the proceeds be sent to someone
          other than the registered shareholder(s) or to an address which
          is not the registered address; or
 
        - transfer shares from one Portfolio to another.
 
    Signatures must  be guaranteed  by an  "eligible guarantor  institution"  as
defined  in Rule  17Ad-15 under  the Securities Exchange  Act of  1934. (The UAM
Funds Service Center can provide  you with a full  definition of the term.)  You
can  obtain a signature  guarantee at almost  any bank, as  well as through most
brokers, dealers,  credit  unions,  national  securities  exchanges,  registered
securities   associations,   clearing   agencies   and   savings   associations.
Broker-dealers  guaranteeing  signatures  must  be   a  member  of  a   clearing
corporation  or maintain net capital of at least $100,000. Credit unions must be
authorized to issue signature guarantees. Signature guarantees will be  accepted
from  any  eligible  guarantor  institution which  participates  in  a signature
guarantee program. A notary public can not provide a signature guarantee.
 
    The signature guarantee must appear either:
 
        - on the written request for redemption; or
 
        - on a separate instrument for assignment (a "stock power") which
          should specify the total number of shares to be redeemed; or
 
        - on all  stock certificates  tendered  for redemption,  and,  if
          shares  held by the  Fund are also being  redeemed, then on the
          letter or stock power.
 
FURTHER INFORMATION ON SELLING SHARES
 
    Normally, the  Fund  will  make  payment for  all  shares  sold  under  this
procedure  within one business day after we  receive a request. In no event will
payment be  made more  than seven  days  after receipt  of a  redemption  (sale)
request  in good order. The Fund may suspend the right of redemption or postpone
the date at times when both the NYSE and Custodian Bank are closed, or under any
emergency circumstances as determined by the Commission.
 
    If the Fund's Board of Trustees  determines that it would be detrimental  to
the  best interests of the  remaining shareholders of the  Fund to make payments
wholly or  partly  in  cash,  the  Fund  may  pay  the  redemption  proceeds  in
 
                                       11
<PAGE>
whole  or in  part by a  distribution in-kind  of liquid securities  held by the
Portfolio instead of cash in conformity with applicable rules of the Commission.
Investors may  incur  brokerage  charges when  they  sell  portfolio  securities
received in payment of redemptions.
 
HOW TO EXCHANGE SHARES
 
    You may exchange Service Class Shares of the Portfolio for any other Service
Class  Shares of a Portfolio included in the UAM Funds which is comprised of the
Fund and UAM Funds, Inc. (For those Portfolios currently offering Service  Class
Shares,  please call the UAM Funds Service Center.) When you exchange shares you
sell your old shares and  buy new ones, both at  the price calculated after  the
next market close. There is no sales charge for exchanges. Exchange requests may
be  made by phone  or letter. Telephone exchanges  may be made  only if the Fund
holds all share  certificates and  if the registration  of the  two accounts  is
identical.  Telephone  exchanges received  before 4  p.m.  Eastern Time  will be
processed at the share price set after the market close the same day.  Exchanges
received  after  4  p.m.  Eastern  Time will  be  executed  at  the  share price
determined at the market close on the following day. For additional  information
regarding   responsibility  for  the   authenticity  of  telephoned  transaction
instructions, see  "How to  Sell Shares  -- By  Telephone" above.  The  exchange
privilege  is only available with respect  to Portfolios that are registered for
sale in a shareholder's state of residence.
 
    Neither the Fund nor the Fund's Transfer Agent will take responsibility  for
ensuring  it is indeed the shareholder  issuing the exchange orders; however, we
may use some of the precautions described above for selling shares. The Fund may
also limit both the frequency and the amount of exchanges permitted if it is  in
the interest of the Fund's shareholders.
 
    Please review a Portfolio's investment objectives before shifting money into
it.  Make  sure its  objectives and  strategies fit  with your  long-term goals.
Before exchanging into a Portfolio, read its Prospectus. You may obtain one  for
the  Portfolio(s) you are interested in by  calling the UAM Funds Service Center
at 1-800-638-7983. Remember, every time you exchange shares of one Portfolio for
another, your transaction  is counted  as a  sale of  the first  security and  a
purchase of the second. As a result, you may incur a tax liability by exchanging
shares  if your investment has appreciated since you bought it. Consult your tax
adviser to determine your liability for capital gains taxes.
 
                         SERVICE AND DISTRIBUTION PLANS
 
    Under the Service Plan  for Service Class Shares,  adopted pursuant to  Rule
12b-1  under  the 1940  Act, the  Fund  may enter  into service  agreements with
Service Organizations  (broker-dealers  or  other  financial  institutions)  who
receive  fees  with  respect  to  the  Fund's  Service  Class  Shares  owned  by
shareholders for  whom the  Service  Organization is  the  dealer or  holder  of
record,  or for  whom the  Service Organization  performs Servicing,  as defined
below. These fees are paid out of  the assets allocable to Service Class  Shares
to  the  Distributor or  to the  Service Organizations  directly or  through the
Distributor. The Fund reimburses the Distributor or the Service Organization, as
the case may be, for payments made at an annual rate of up to 0.25 of 1% of  the
average  daily value of  Service Class Shares  owned by clients  of such Service
Organization during the period payments for Servicing are being made to it. Such
payments are borne exclusively by the Service Class Shares. Each item for  which
a payment may be made under the Service Plan constitutes personal service and/or
shareholder  account maintenance and  may constitute an  expense of distributing
Fund shares as  the Commission construes  such term under  Rule 12b-1. The  fees
payable for Servicing are payable without regard to actual expenses incurred.
 
    Servicing  may include,  among other  things, one  or more  of the following
rendered with  respect  to  the Service  Class  shareholders:  answering  client
inquiries  regarding the Fund;  assisting clients in  changing dividend options,
account designations and addresses;  performing subaccounting; establishing  and
maintaining shareholder accounts and records; processing purchase and redemption
transactions;  investing client  cash account balances  automatically in Service
Class Shares; providing periodic statements  showing a client's account  balance
and integrating such statements with those of other transactions and balances in
the  client's other accounts serviced by the Service Organization; arranging for
bank wires; and such other services as  the Fund may request, to the extent  the
Service Organization is permitted by applicable statute, rule or regulation.
 
    The   Glass-Steagall  Act  and  other  applicable  laws  prohibit  federally
chartered or supervised banks from engaging  in certain aspects of the  business
of  issuing, underwriting, selling  and/or distributing securities. Accordingly,
banks  will  be  engaged  to  act  as  Service  Organization  only  to   perform
administrative  and shareholder servicing  functions. If a  bank were prohibited
from so  acting, its  shareholder  clients would  be  permitted to  remain  Fund
shareholders  and  alternative  means  for  continuing  the  Servicing  of  such
shareholders would be sought.
 
                                       12
<PAGE>
    The Distributor promotes  the distribution  of the Service  Class Shares  in
accordance  with the terms of a Distribution Plan adopted pursuant to Rule 12b-1
under the 1940 Act. The  Distribution Plan provides for  the use of Fund  assets
allocable to Service Class Shares to pay expenses of distributing such shares.
 
    The  Distribution Plan and  Service Plan (the "Plans")  were approved by the
Board, including a majority of the Trustees who are not "interested persons"  of
the  Fund as defined in the 1940 Act (and each of whom has no direct or indirect
financial interest in the  Plans or any agreement  related thereto, referred  to
herein  as the "12b-1 Trustees"). The Plans may be terminated at any time by the
vote of the Board  or the 12b-1 Trustees,  or by the vote  of a majority of  the
outstanding Service Class Shares of the Portfolio involved.
 
    While  the Plans continue in effect, the  selection of the 12b-1 Trustees is
committed to the discretion  of such persons then  in office. The Plans  provide
generally  that a Portfolio  may incur distribution and  service costs under the
Plans which may not exceed in the aggregate 0.75% per annum of that  Portfolio's
net  assets. The Board has currently  limited aggregate payments under the Plans
to 0.50% per annum of a Portfolio's net assets. The Service Class Shares offered
by this  Prospectus currently  are not  making payments  under the  Distribution
Plan.  Upon implementation, the  Distribution Plan would  permit payments to the
Distributor, broker-dealers, other financial institutions, sales representatives
or other third  parties who  render promotional and  distribution services,  for
items  such  as advertising  expenses, selling  expenses, commissions  or travel
reasonably intended  to result  in sales  of Service  Class Shares  and for  the
printing  of prospectuses sent to prospective purchasers of Service Class Shares
of the Portfolio.
 
    Although the Plans may be amended by  the Board of Trustees, any changes  in
the  Plans which  would materially  increase the  amounts authorized  to be paid
under the Plans  must be  approved by shareholders  of the  Class involved.  The
total  amounts paid under the foregoing  arrangements may not exceed the maximum
limits specified above, and the amounts  and purposes of expenditures under  the
Plans  must be reported  to the 12b-1 Trustees  quarterly. The amounts allowable
under the Plans  for each Class  of Shares  of the Portfolios  are also  limited
under certain rules of the National Association of Securities Dealers, Inc.
 
    In addition to payments by the Fund under the Plans, United Asset Management
Corporation,  the parent company of the Adviser,  or the Adviser may, at its own
expense, compensate  a  Service  Organization or  other  person  for  marketing,
shareholder  servicing and other services performed  with respect to a Portfolio
or any class of shares of a Portfolio. The Adviser may make such payments out of
its investment advisory fee, its past  profits or any other source available  to
it.
 
                        HOW SHARE PRICES ARE DETERMINED
 
    The  value of each class of shares  of the Portfolio is calculated every day
that the NYSE is open. This means that shares are valued after the market close,
generally at 4  p.m. Eastern  Time on Monday  through Friday,  except for  major
holidays  when the  NYSE is  closed. The  net asset  value of  the Service Class
Shares may be lower than the net  asset value of the Institutional Class  Shares
reflecting  the daily expense accruals of  the shareholder servicing fee and any
distribution and transfer agency fees applicable to the Service Class Shares.
 
    The value of each share is determined by adding up the total market value of
all the  securities in  the  Portfolio plus  cash  and other  assets,  deducting
liabilities,  then dividing  by the  total number  of shares  outstanding of the
class.
 
    Net asset value includes interest on bonds and other fixed income securities
which is  accrued daily.  Bonds and  other fixed  income securities  are  valued
according  to the broadest and most  representative market which will ordinarily
be the  over-the-counter  market. In  addition,  bonds and  other  fixed  income
securities  may be valued on  the basis of prices  provided by a pricing service
when such  prices  are  believed  to  reflect the  fair  market  value  of  such
securities.
 
    The value of other assets and securities for which no quotations are readily
available  (including restricted securities) is determined in good faith at fair
value using methods determined by the Fund's Board of Trustees.
 
                DIVIDENDS, CAPITAL GAINS DISTRIBUTIONS AND TAXES
 
DIVIDENDS
 
    Bonds generate  income  in  the  form of  periodic  interest  payments.  The
Portfolio  will  normally distribute  substantially  all of  its  net investment
income from  these  payments  to shareholders  of  each  Class in  the  form  of
quarterly  dividends. This means that the amount  of income net of expenses each
share has earned over the past
 
                                       13
<PAGE>
quarter will be determined  and subtracted from the  total share value. The  per
share  dividends and  distributions on  Service Class  Shares generally  will be
lower than  the per  share dividends  and distributions  on Institutional  Class
Shares  as a result of the  shareholder servicing, distribution and any transfer
agency fees  applicable to  the Service  Class Shares.  The net  income is  then
either  distributed to you in cash or  reinvested in Portfolio shares at the new
after-dividend price, depending  on your instructions  to the Portfolio.  Unless
you specifically tell us to distribute dividend income in cash, however, we will
assume  you  want this  income reinvested.  By law,  you must  pay taxes  on any
dividend or interest income you receive on your investments whether  distributed
in  cash or  reinvested in  shares. The  interest on  municipal obligations will
normally be exempt from federal taxes.  The Portfolio will send you a  statement
at  the end of  the year telling you  exactly how much  dividend income you have
earned for tax purposes.
 
CAPITAL GAINS
 
    Capital  gains  are  another  source  of  appreciation  to  the   Portfolio.
Basically,  a capital gain is  an increase in the value  of a bond. However, for
tax purposes, the Portfolio does not need to "realize" or declare a capital gain
unless it sells a bond which has appreciated.
 
    You can incur capital gains in two ways. First, if the Portfolio buys a bond
at one price, then sells it at a  higher price, it will realize a capital  gain.
At  the end of the year,  the capital gains the Portfolio  has made are added up
and capital losses are  subtracted. If any net  capital gains are realized,  the
Portfolio  will  normally distribute  such gains  annually.  You will  receive a
statement at the end of the year informing you of your share of the  Portfolio's
capital gains.
 
    The second way to incur capital gains is to sell or exchange your shares. If
you  sell shares at a higher price than you bought them, you will be responsible
for paying taxes  on your gain.  There are  several ways to  determine your  tax
liability, and we suggest you contact a qualified tax adviser to help you decide
which is best for you.
 
TAXES
 
    The  Portfolio  intends  to qualify  each  year as  a  "regulated investment
company" under Federal tax law, and if  it qualifies, the Portfolio will not  be
liable  for Federal income  taxes because it  will have distributed  all its net
investment income and net realized  capital gains to shareholders.  Shareholders
will  then have to pay taxes on  dividends, whether they are distributed as cash
or are reinvested in shares, and on net short-term capital gains. Dividends  and
short-term  capital gains  will be taxed  as ordinary  income. Long-term capital
gains distributions are taxed as long-term capital gains.
 
    Dividends declared  in October,  November and  December to  shareholders  of
record  in such a month will be treated as if they had been paid by the Fund and
received by the shareholders on December 31 of the same calendar year,  provided
that the dividends are paid before February of the following year.
 
    The  Fund is required by Federal law  to withhold 31% of reportable payments
(which may include dividends, capital gains distributions and redemptions)  paid
to  shareholders who have not  complied with IRS regulations.  In order to avoid
this withholding requirement, you must certify on the Account Registration  Form
or on a separate form supplied by the Fund that your Social Security or Taxpayer
Identification  Number  you  have  provided  is correct  and  that  you  are not
currently subject  to backup  withholding or  that you  are exempt  from  backup
withholding.
 
    Dividends   and  interest  received  by  the  Portfolio  may  give  rise  to
withholding and other taxes imposed by foreign countries. These taxes reduce the
Portfolio's dividends but are  included in the taxable  income reported on  your
tax  statement if the Portfolio  qualifies for this tax  treatment and elects to
pass it through to  you. You may be  able to claim an  offsetting tax credit  or
itemized  deduction for foreign  taxes paid by the  Portfolio Your tax statement
will generally show the amount  of foreign tax for  which a credit or  deduction
may be available.
 
                       FUND MANAGEMENT AND ADMINISTRATION
 
THE INVESTMENT ADVISER
 
    The  Adviser is a registered investment adviser formed in 1979. Its business
offices are located  at One McKinney  Plaza, 3232 McKinney  Avenue, 15th  Floor,
Dallas,  Texas 75204. It is a wholly-owned subsidiary of United Asset Management
Corporation and provides and offers investment management services to corporate,
public and Taft-Hartley employee benefit plans, foundations, endowments,  health
care and other institutions and investors. The Adviser currently has $15 billion
in assets under management.
 
                                       14
<PAGE>
    The  Portfolio pays an annual fee in monthly installments to the Adviser for
advisory services.  This  fee  is  accrued  daily and  paid  every  month  as  a
percentage  of  the average  net assets  in  the Portfolio  for that  month. The
percentage fee on an annual basis  is 0.35%. The Adviser has voluntarily  agreed
to  waive a  portion of  its advisory fees  and to  assume as  the Adviser's own
expense certain  operating  expenses  otherwise payable  by  the  Portfolio,  if
necessary, in order to keep the Portfolio's Service Class Shares total operating
expenses from exceeding 0.80% through December 31, 1997. The Adviser will not be
reimbursed  by the Fund for any advisory fees which are waived or expenses which
the Adviser may bear on behalf of the Fund.
 
    The Adviser may compensate its affiliated companies for referring  investors
to  the Portfolio. The Adviser and its  parent company may also make payments to
unaffiliated brokers who perform distribution, marketing, shareholder and  other
services with respect to the Portfolio.
 
    The  investment professionals at the  Adviser responsible for the day-to-day
management of the Portfolio and their qualifications are as follows:
 
    JOHN S.  WILLIAMS --  Fixed  Income Principal  and  the first  fixed  income
portfolio manager at the Adviser in 1983. Mr. Williams has also managed balanced
and  municipal portfolios during his 19 year investment career. Prior to joining
the Adviser, he was responsible for the management of all fixed income assets at
Southland Trust, Dallas, Texas,  and prior to that  was a portfolio manager  and
securities  analyst at InterFirst Bank Dallas Trust Department. Mr. Williams has
served on the Advisory Committee for the Texas Teachers Retirement System and is
an active member in  the Dallas Investment Analysts  Society. He is a  Chartered
Financial  Analyst, earning his MBA in 1976 and BBA in 1975 from Texas Christian
University.
 
    DAVID R. HARDIN --  Fixed Income Principal and  portfolio manager. Prior  to
joining  the Adviser in 1987, Mr. Hardin  was the Vice President and Director of
the Fixed  Income  Group  of  RepublicBank  Dallas  Trust  Department.  In  that
position,  he was responsible  for the management of  all taxable and tax-exempt
fixed income  assets of  the Trust  Division, including  all separately  managed
accounts,   collective  investment  fund  products,  and  the  creation  of  and
management of an SEC-registered mutual  fund. Prior to attaining the  Director's
position,  Mr. Hardin  was a  taxable portfolio manager  and also  served as the
credit analyst for  the Trust Division.  He started his  investment career as  a
private  placement credit analyst  while employed by  American General Insurance
Co. in Houston in 1976. Mr. Hardin  received an M.Sc. from The London School  of
Economics in 1975 and a BBA from Texas Christian University in 1973.
 
    STEPHEN  M. MILANO -- Fixed Income Principal and portfolio manager. Prior to
joining the Adviser in 1990, Mr.  Milano was employed at Salomon Brothers,  Inc.
in New York as a Vice President of the Fixed Income Strategy Group. In that role
he  was a specialist in developing portfolio structure and strategies for active
management of taxable assets. While at  Salomon he also served as Product  Sales
Manager  for  International  Fixed  Income  Securities  and  as  a  Mortgage and
Government Specialist. Prior to  joining Salomon, Mr. Milano  was employed as  a
portfolio  manager and trader  at Equitable Life  Assurance Society. He received
his BS in Economics with a concentration  in Finance from the Wharton School  of
the University of Pennsylvania in 1980.
 
    J.  SCOTT MCDONALD  -- Fixed  Income Portfolio  Analyst/Trader. Mr. McDonald
joined the Adviser in 1995 to serve  as a security and portfolio specialist  for
the  Fixed Income Group.  In addition to  security and portfolio  analyst, he is
responsible for systems  analytics used  in the  evaluation of  effective/option
adjusted yield measurements for all securities and portfolios. He also serves as
compliance  monitor  of all  fixed income  portfolios  to ensure  commonality of
structure and diversification. Mr. McDonald previously served as the Senior Vice
President and Portfolio  Manger at Life  Partners Group, Inc.  in Dallas.  While
with  Life Partners, he was responsible for implementing investment strategy for
$3 billion in assets. Additionally, he has been employed by Texas Commerce  Bank
Houston  as a Credit Supervisor and Lending Officer. He received his MBA in 1991
from the  University of  Texas at  Austin and  his BBA  from Southern  Methodist
University in 1986.
 
    DEBORAH   J.  ANDERSON  --  Senior  Portfolio  Assistant.  Ms.  Anderson  is
responsible for all administrative  staff and their  duties associated with  the
fixed  income  product  management,  including  communication/liaison  with  all
clients, custodial  banks,  and  brokerage  relationships.  She  supervises  all
operational  aspects of fixed income security trading and works extensively with
reporting requirements for all clients and regulatory agencies. Prior to joining
the Adviser in 1988, Ms. Anderson served  as a Trust Officer with Trust  Company
of  Texas  and  its predecessor,  Southland  Trust  Co. She  received  a  BBA in
Accounting from the University of Texas at Arlington in 1974.
 
                                       15
<PAGE>
THE ADMINISTRATOR
 
    The Chase Manhattan Bank, N.A.,  through its subsidiary, Chase Global  Funds
Services  Company, provides  all administrative,  fund accounting,  transfer and
dividend disbursing agent services to the Fund.
 
    According to  the  Fund Administration  Agreement,  the Portfolio  pays  the
administrator  a fee for  its services. This fee  is a portion  of the total fee
paid by all the Portfolios of the UAM Funds. On an annualized basis, this  total
fee equals:
 
       0.20% of the first $200 million in combined Fund assets
       0.12% of the next $800 million in combined Fund assets
       0.08% on assets over $1 billion but less than $3 billion
       0.06% on assets over $3 billion
 
    Fees  are  allocated among  the Portfolios  on the  basis of  their relative
assets and are subject to a designated minimum fee schedule per Portfolio  which
ranges  from $2,000 per month upon inception  of a Portfolio to $70,000 annually
after two years.
 
THE DISTRIBUTOR
 
    The Distributor,  a  wholly-owned  subsidiary  of  United  Asset  Management
Corporation,  distributes the shares of the  Fund. Under the Fund's Distribution
Agreement (the "Agreement"), the  Distributor, as agent of  the Fund, agrees  to
use  its best efforts as sole distributor  of the Fund's shares. The Distributor
does not receive any fee or other compensation under the Agreement with  respect
to  this Portfolio (except  as described under  "Service and Distribution Plans"
above). The  Agreement  continues in  effect  as long  as  the Fund's  Board  of
Trustees,  including  a majority  of the  Trustees  who are  not parties  to the
Agreement or  interested persons  of any  such party,  approve it  on an  annual
basis.  This  Agreement  provides that  the  Fund  will bear  the  costs  of the
registration of  its shares  with  the Commission  and  various states  and  the
printing  of its prospectuses, statements  of additional information and reports
to shareholders.
 
CUSTODIAN
 
    Morgan Guaranty Trust Company of New York serves as custodian of the  Fund's
assets.
 
ACCOUNTANTS
 
    Price  Waterhouse LLP acts  as the independent accountants  for the Fund and
audits its financial statements annually.
 
ADMINISTRATOR, TRANSFER AND DIVIDEND DISBURSING AGENT
 
    Chase Global Funds Services  Company, 73 Tremont  Street, Boston, MA  02108,
acts  as administrator,  transfer agent  and dividend  disbursing agent  for the
Fund.
 
REPORTS
 
    Investors will receive unaudited semi-annual financial statements and annual
financial statements audited by Price Waterhouse LLP.
 
SHAREHOLDER INQUIRIES
 
    Shareholder inquiries may  be made  by writing to  the Fund  at the  address
listed on the cover of this Prospectus or by calling 1-800-638-7983.
 
LITIGATION
 
    The Fund is not involved in any litigation.
 
PRINCIPAL BUSINESS ADDRESS OF DISTRIBUTOR
 
    UAM Fund Distributors, Inc.
    One International Place, 44th Floor
    100 Oliver Street
    Boston, Massachusetts 02110
 
                                       16
<PAGE>
                            GENERAL FUND INFORMATION
 
    The  Portfolio is one of a series of investment portfolios available through
UAM Funds Trust, an open-end investment  company known as a "mutual fund."  Each
of  the Portfolios which  make up the Fund  have different investment objectives
and policies. Together, the  Portfolios offer a diverse  set of risk and  return
characteristics  to suit a wide range of  investor needs. The Fund was organized
under the name "The Regis Fund II" on May 18, 1994 as a Delaware business trust.
On October 31, 1995, the name of the Fund was changed to "UAM Funds Trust."
 
DESCRIPTION OF SHARES AND VOTING RIGHTS
 
    The  Officers  of  the  Fund  manage  its  day-to-day  operations  and   are
responsible to the Fund's Board of Trustees. The Trustees set broad policies for
the Fund and elect its Officers.
 
    The  Fund's Agreement and Declaration of Trust  permits the Fund to issue an
unlimited number  of  shares of  beneficial  interest, without  par  value.  The
Trustees  have  the power  to  designate one  or  more series  ("Portfolios") or
classes of shares of beneficial interest without further action by shareholders.
 
    The shares of  each Portfolio  and class have  noncumulative voting  rights,
which  means that  the holders  of more than  50% of  the shares  voting for the
election of Trustees can elect 100% of the  Trustees if they choose to do so.  A
shareholder  is entitled to one vote for  each full share held (and a fractional
vote for each fractional share held), then standing in his name on the books  of
the  Fund.  Both  Institutional  Class and  Service  Class  Shares  represent an
interest in the same assets of the  Portfolio and are identical in all  respects
except   that  the  Service  Class  Shares  bear  certain  expenses  related  to
shareholder servicing and may bear expenses related to the distribution of  such
shares and have exclusive voting rights with respect to matters relating to such
distribution  expenditures.  The  Fund  will  not  ordinarily  hold  shareholder
meetings except as required by the 1940 Act and other applicable laws. The  Fund
has  undertaken that its Trustees will call  a meeting of shareholders if such a
meeting is requested  in writing  by the  holders of not  less than  10% of  the
outstanding  shares of the Fund. To the  extent required by the undertaking, the
Fund will assist shareholder communications in such matters.
 
    NO PERSON  HAS  BEEN AUTHORIZED  TO  GIVE ANY  INFORMATION  OR TO  MAKE  ANY
REPRESENTATIONS  OTHER  THAN  THOSE  CONTAINED  IN  THIS  PROSPECTUS  OR  IN THE
PORTFOLIO'S STATEMENT OF ADDITIONAL INFORMATION IN CONNECTION WITH THE  OFFERING
MADE  BY  THIS  PROSPECTUS  AND,  IF GIVEN  OR  MADE,  SUCH  INFORMATION  OR ITS
REPRESENTATIONS MUST NOT BE RELIED UPON  AS HAVING BEEN AUTHORIZED BY THE  FUND.
THIS  PROSPECTUS DOES NOT CONSTITUTE AN OFFERING BY THE FUND IN ANY JURISDICTION
IN WHICH SUCH OFFERING MAY NOT BE LAWFULLY MADE.
 
                                       17


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