PROFESSIONALLY MANAGED PORTFOLIOS
N-30D, 1998-06-08
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June 6,1998


Securities and Exchange Commission
Attn: Filing Desk, Stop 1-4
450 Fifth Street, N.W.
Washington, DC 20549

                                           Re: Professionally Managed Portfolios
                                            File No. 811-5037
                                            CIK No. 811030

Dear Sir or Madam:

     On behalf of the above  Registrant  and  pursuant  to Rule 30b-2  under the
Investment  Company Act of 1940,  I enclose for filing via EDGAR,  a copy of the
Annual Report to shareholders of the Osterweis Fund series of the Registrant for
the year ended March 31, 1998.

If you have any questions, please contact me at (602) 952-1100.

Sincerely yours,

/s/
Robert H. Wadsworth


<PAGE>
                               The Osterweis Fund

                                  Annual Report

                                 March 31, 1998

<PAGE>
                               The Osterweis Fund

                                 April 24, 1998


Dear Shareholders,

During the first quarter of 1998, The Osterweis  Fund (the "Fund")  enjoyed very
strong returns.  Net asset value per share increased 14.1%,  compared to a 13.9%
total return for the  Standard  and Poor's 500 Index.  Because the Fund was less
than  fully  invested  in  stocks,  its  above-average  performance  reflects  a
significant outperformance from the stocks it did hold.

While  the  stock  market,  in our  view,  cannot  continually  rise at the same
exceptional  rate that it has over the past three  years,  the factors that have
led to recent  market  strength  are still  intact.  These  include an expanding
economy, rising corporate profits, and a lack of inflationary pressure,  coupled
with easy credit and low or declining interest rates.  Eventually one or more of
these   conditions  will  change  and  the  market  will  suffer  an  inevitable
correction.

For a while last year, it appeared that the Asian turmoil would adversely affect
economic growth and corporate  profits.  This has proven  partially true as some
U.S.  companies  selling to Asia or  competing  with Asian goods have seen lower
profits. On balance though,  Asia's problems now appear to be a net positive for
the U.S.,  as they have not caused a slowdown in overall U.S.  growth,  but have
lessened inflationary  pressures. As a result, the Fed has been able to maintain
an accommodative U.S. domestic monetary policy and low interest rates.

So while some U.S. companies have reported  Asian-related  earnings problems and
typically have seen their stocks trashed,  in general,  U.S.  corporate  profits
have remained solid.  This,  coupled with benign interest rates, has allowed the
stock market to flourish.

While we are  certainly  a bit  cautious  in the face of  current  stock  market
valuations,  we  believe  that it is not  particularly  productive  to  focus on
macroeconomic  predictions,  which,  in our  experience,  are often  wrong,  but
instead to focus on specific  investment  opportunities.  Despite  the  market's
generally rich valuation level, we are able to identify a number of attractively
priced situations with improving fundamentals. As a result, we continue to build
our portfolio with stocks  specifically  chosen for a combination of strong free
cash flows,  excellent management and improving profit outlooks.  Such companies
should prove rewarding  investments  over time, even if the overall market turns
less ebullient.

<PAGE>
Please let us know if we can answer any  questions.  We appreciate the trust you
have placed in us and want to be responsive to your investment needs.

Sincerely,


/s/


John S. Osterweis


The Osterweis  Fund's  average annual total return from its inception on October
1, 1993 through  March 31, 1998 was 16.9%.  The twelve  months  ending March 31,
1998 provided a total return of 45.8%. Results shown are past performance, which
should not be regarded as an indicator of future results.  Investment return and
principal value will fluctuate so that an investor's  shares when redeemed,  may
be worth more or less than their cost.  The  Osterweis  Fund is  distributed  by
First Fund Distributors, Inc., Phoenix, AZ 85018.

The Osterweis Fund
Vaslue of $10,000 vs. the S&P 500 Index
Average Annual Total Return
Period Ended March 31, 1998
1 Year.....................45.77%
Since Inception (10/1/93)..16.85%

Qtr               Adj Fund Adj S&P
10/1/93           10000    10000
12/31/93          10444    10179.15
3/31/94           10303.7  9789.359
6/30/94           10354.8  9823.736
9/30/94           10760.9  10313.23
12/31/94          10323.3  10308.93
3/31/95           10706.8  11311.74
6/30/95           11401.3  12390.81
9/30/95           12106.1  13374.64
12/31/95          11849    14178.14
3/31/96           12376.1  14942.03
6/30/96           12990.7  15602.23
9/30/96           13268.9  16091.02
12/31/96          13758.4  17437.85
3/31/97           13812.1  17899.76
6/30/97           15903.2  21018.91
9/30/97           17350.9  22596.06
12/31/97          17645.4  23252.44
3/31/98           20134    26493.87

Past performance is not predictive of future performance.

      The  S&P  500  is a  broad  market-weighted  average  of U.  S.  blue-chip
companies. The index is unmanaged and returns include reinvested dividends.
<PAGE>
                               The Osterweis Fund
<TABLE>
<CAPTION>

SCHEDULE OF INVESTMENTS at March 31, 1998
- ------------------------------------------------------------------------------------------------------------------------------------
      Shares         COMMON STOCKS: 89.7%                                                             Market Value
- ------------------------------------------------------------------------------------------------------------------------------------
                     Banks: 3.1%
<S>    <C>                                                                                               <C>      
       9,500         NationsBank Corp........................................................            $ 692,906
                                                                                                         ---------

                     Beverages - Alcoholic: 2.2%
      10,800         Anheuser-Busch Companies, Inc...........................................              500,175
                                                                                                           -------

                     Building and Heavy Construction: 3.2%
      25,800         CalMat Company..........................................................              712,725
                                                                                                           -------

                     Business Services: 2.8%
      23,666         A.C. Nielsen Corp.......................................................              625,670
                                                                                                           -------

                     Computer Services: 2.7%
      13,200         Electronic Data Systems Corp............................................              605,550
                                                                                                           -------

                     Consumer Products: 6.1%
      11,400         Kimberly-Clark Corp.....................................................              571,425
      54,000         Playtex Products, Inc...................................................              796,500
                                                                                                           -------
                                                                                                         1,367,925
                                                                                                         ---------
                     Cosmetics: 3.2%
       9,240         Avon Products, Inc......................................................              720,720
                                                                                                           -------

                     Energy: 9.4%
      38,400         Calpine Corp............................................................              684,000
      22,000         Pioneer Natural Resources Company.......................................              547,250
      42,729         Snyder Oil Corp.........................................................              870,603
                                                                                                           -------
                                                                                                         2,101,853
                                                                                                         ---------
                     Financial Services: 3.3%
       9,400         Associates First Capital Corp., Class A.................................              742,600
                                                                                                           -------

                     Insurance:  3.8%
      12,700         HSB Group, Inc..........................................................              854,075
                                                                                                           -------
See accompanying Notes to Financial Statements.
<PAGE>
                               The Osterweis Fund

SCHEDULE OF INVESTMENTS at March 31, 1998, Continued
- ------------------------------------------------------------------------------------------------------------------------------------
      Shares                                                                                          Market Value
- ------------------------------------------------------------------------------------------------------------------------------------
                     Manufacturing - Diversified: 2.2%
       5,900         W.R. Grace & Company....................................................            $ 493,756
                                                                                                         ---------

                     Media and Broadcasting: 9.5%
      29,119         CBS Corp................................................................              988,226
      12,500         Scandinavian Broadcasting System SA, ADR*...............................              412,500
      23,400         Westwood One, Inc.......................................................              725,400
                                                                                                           -------
                                                                                                         2,126,126
                                                                                                         ---------
                     Newspapers and Publishing: 2.8%
      43,100         PRIMEDIA, Inc...........................................................              633,031
                                                                                                           -------

                     Pharmaceuticals: 6.6%
      22,000         Forest Laboratories, Inc................................................              794,750
      50,000         Sequus Pharmaceuticals, Inc.............................................              528,125
      13,000         VIVUS, Inc..............................................................              152,750
                                                                                                           -------
                                                                                                         1,475,625
                                                                                                         ---------
                     Real Estate: 7.9%
      49,800         Catellus Development Corp...............................................              924,413
      23,800         Crescent Real Estate Equities Company...................................              856,800
                                                                                                           -------
                                                                                                         1,781,213
                                                                                                         ---------
                     Retail: 13.8%
      28,600         Rite Aid Corp...........................................................              979,550
      95,000         Sunglass Hut International, Inc.........................................              997,500
      23,704         Tandy Corp..............................................................            1,114,088
                                                                                                         ---------
                                                                                                         3,091,138
                                                                                                         ---------
                     Telecommunications: 7.1%
       7,900         Cellular Communications International, Inc..............................              537,200
      15,320         CoreComm, Inc...........................................................              255,174         
      18,267         NTL Inc.................................................................              790,048
                                                                                                           -------
                                                                                                         1,582,422
                                                                                                         ---------

                     Total Common Stocks (cost $12,005,990)..................................           20,107,510
                                                                                                        ----------
See accompanying Notes to Financial Statements.
<PAGE>
                               The Osterweis Fund

SCHEDULE OF INVESTMENTS at March 31, 1998, Continued
- ------------------------------------------------------------------------------------------------------------------------------------
      Shares                                                                                          Market Value
                     Telecommunications: 1.4%
       7,785         AirTouch Communications, Inc., 6.00%, Class B (cost $193,727)...........            $ 321,131
                                                                                                         ---------

                     WARRANTS: 0.2%
- ------------------------------------------------------------------------------------------------------------------------------------
                     Oil/Gas - Exploration: 0.2%
      25,928         Patina Oil & Gas Corp., Exp. 5/2/2001 (cost $46,994)....................               37,272
                                                                                                            ------

                     U.S. GOVERNMENT AND
Principal Amount     GOVERNMENT AGENCY OBLIGATIONS: 4.2%
- ------------------------------------------------------------------------------------------------------------------------------------
   $ 350,000         FFCB, 5.47%, 4/1/1998...................................................              350,000
     300,000         FHLD, 5.50%, 6/10/1998..................................................              296,862
     300,000         FFCB, 5.46%, 10/1/1998..................................................              300,000
                                                                                                           -------

                     Total U. S. Government and Government Agency Obligations
                     (cost $946,792).........................................................              946,862
                                                                                                           -------

                     CONVERTIBLE CORPORATE BONDS: 1.8%
- ------------------------------------------------------------------------------------------------------------------------------------
                     Oil/Gas - Exploration: 1.8%
     414,000         Kelley Oil & Gas Partners, 7.875%, 12/15/1999 (cost $368,217)...........              405,720
                                                                                                           -------

                     REPURCHASE AGREEMENT: 4.1%
- ------------------------------------------------------------------------------------------------------------------------------------
     928,000         Star Bank Repurchase Agreement, 5.00%, dated 3/31/1998,
                     due 4/1/1998, collateralized by $949,763 GNMA, due
                     5/20/2024 (proceeds $928,129) (cost $928,000)...........................              928,000
                                                                                                           -------


                     Total Investment in Securities (cost $14,489,720+): 101.4%..............           22,746,495
                     Liabilities in excess of Other Assets: (1.4)%...........................             (305,613)
                                                                                                          -------- 
                     Total Net Assets: 100.0% ...............................................          $22,440,882
                                                                                                       ===========
<FN>

*Non-income producing security.


See accompanying Notes to Financial Statements.
<PAGE>
                               The Osterweis Fund


SCHEDULE OF INVESTMENTS at March 31, 1998, Continued
- ------------------------------------------------------------------------------------------------------------------------------------

- ------------------------------------------------------------------------------------------------------------------------------------
+At March 31, 1998, the cost of securities for Federal tax purposes was the same
as the basis for financial reporting.  Unrealized  appreciation and depreciation
of securities were as follows:

                     Gross unrealized appreciation...........................................          $ 8,671,778
                     Gross unrealized depreciation...........................................             (415,003)
                                                                                                          -------- 
                              Net unrealized appreciation....................................          $ 8,256,775
                                                                                                       ===========
</FN>
</TABLE>

See accompanying Notes to Financial Statements.
<PAGE>
                               The Osterweis Fund
<TABLE>
<CAPTION>

STATEMENT OF ASSETS AND LIABILITIES at March 31, 1998
- ------------------------------------------------------------------------------------------------------------------------------------

ASSETS
<S>                                                                                                    <C>        
      Investments in securities, at value (cost $14,489,720).................................          $22,746,495
      Cash  .................................................................................                   35         
      Dividends and interest receivable  ....................................................               30,775
      Deferred organization costs............................................................                3,930
                                                                                                             -----
                  Total assets ..............................................................           22,781,235
                                                                                                        ----------

LIABILITIES
      Payables:
            Advisory fees....................................................................               18,613
            Administration fee...............................................................                3,667
            Securities purchased.............................................................              300,000
      Accrued expenses ......................................................................               18,073
                                                                                                            ------
                  Total liabilities..........................................................              340,353
                                                                                                           -------


NET ASSETS  ................................................................................           $22,440,882
                                                                                                       ===========

      Net asset value, offering and redemption price per share
            ($22,440,882/1,320,805 shares outstanding;
            unlimited number of shares authorized without par value) ........................               $16.99
                                                                                                            ======

COMPONENTS OF NET ASSETS
      Paid-in capital........................................................................          $13,743,133
      Undistributed net realized gain on investments.........................................              440,974
      Net unrealized appreciation on investments.............................................            8,256,775
                                                                                                         ---------
            Net assets ......................................................................          $22,440,882
                                                                                                       ===========
</TABLE>




See accompanying Notes to Financial Statements.
<PAGE>
                               The Osterweis Fund
<TABLE>
<CAPTION>

STATEMENT OF OPERATIONS - For the Year Ended March 31, 1998
- ------------------------------------------------------------------------------------------------------------------------------------

INVESTMENT INCOME
      Income
<S>                                                                                                      <C>      
            Dividends........................................................................            $ 201,711
            Interest ........................................................................              140,229
            Other ...........................................................................               14,726
                                                                                                            ------
                  Total income ..............................................................              356,666
                                                                                                           -------
      Expenses
            Advisory fees....................................................................              190,006
            Administration fee...............................................................               38,001
            Fund accounting fees.............................................................               17,301
            Audit fee........................................................................               15,501
            Custody fees.....................................................................               10,674
            Transfer agent fees..............................................................                9,885
            Amortization of deferred organization costs......................................                7,753
            Trustee fees.....................................................................                6,102
            Registration fees................................................................                5,177
            Reports to shareholders..........................................................                5,001
            Miscellaneous....................................................................                5,001
            Legal fees.......................................................................                4,501
            Insurance........................................................................                2,226
                                                                                                             -----
                  Total expenses.............................................................              317,129
                  Add: reimbursement to Advisor..............................................               15,381
                                                                                                            ------
                  Net expenses...............................................................              332,510
                                                                                                           -------
                        Net investment income   .............................................               24,156
                                                                                                            ------

REALIZED AND UNREALIZED GAIN ON INVESTMENTS
      Net realized gain from security transactions ..........................................            1,814,280
      Net change in unrealized appreciation on investments ..................................            5,323,212
                                                                                                         ---------
                  Net realized and unrealized gain on investments ...........................            7,137,492
                                                                                                         ---------
                        Net increase in net assets resulting from operations ................          $ 7,161,648
                                                                                                       ===========
</TABLE>

See accompanying Notes to Financial Statements.
<PAGE>
                               The Osterweis Fund
<TABLE>
<CAPTION>

STATEMENT OF CHANGES IN NET ASSETS
- ------------------------------------------------------------------------------------------------------------------------------------
                                                                                   Year Ended         Year Ended
                                                                                 March 31, 1998     March 31, 1997
- ------------------------------------------------------------------------------------------------------------------------------------

INCREASE (DECREASE) IN NET ASSETS FROM:
OPERATIONS
<S>                                                                                   <C>               <C>      
Net investment income.........................................................        $ 24,156          $ 109,972
Net realized gain from security transactions .................................       1,814,280            576,542
Net change in unrealized appreciation on investments..........................       5,323,212          1,224,750
                                                                                     ---------          ---------
      Net increase in net assets resulting from operations ...................       7,161,648          1,911,264
                                                                                     ---------          ---------

DISTRIBUTIONS TO SHAREHOLDERS
Net investment income.........................................................         (57,823)          (113,260)
Net realized gain from security transactions..................................      (1,810,405)          (188,621)
                                                                                    ----------           -------- 
      Total distributions to shareholders ....................................      (1,868,228)          (301,881)
                                                                                    ----------           -------- 

CAPITAL SHARE TRANSACTIONS
Net increase (decrease) in net assets derived from net change in
   outstanding shares (a) ....................................................         597,520         (1,943,533)
                                                                                       -------         ---------- 
      Total increase (decrease) in net assets ................................       5,890,940           (334,150)

NET ASSETS
Beginning of year.............................................................      16,549,942         16,884,092
                                                                                    ----------         ----------
End of year .................................................................      $22,440,882        $16,549,942
                                                                                   ===========        ===========
<FN>

(a) A summary of capital shares transactions is as follows:

                                                                Years Ended                     Year Ended
                                                              March 31, 1998                  March 31, 1997
                                                          Shares           Value          Shares          Value
Shares sold .........................................     107,150      $ 1,649,762          329,346    $ 4,104,926
Shares issued in reinvestment of distribution........     127,199        1,834,205         24,407         297,077
Shares redeemed .....................................    (198,090)      (2,886,447)      (507,580)     (6,345,536)
                                                         --------       ----------       --------      ---------- 
Net increase (decrease) .............................      36,259        $ 597,520       (153,827)    $(1,943,533)
                                                           ======        =========       ========     =========== 

</FN>
</TABLE>


See accompanying Notes to Financial Statements.
<PAGE>
                               The Osterweis Fund
<TABLE>
<CAPTION>

FINANCIAL HIGHLIGHTS
For a capital share outstanding throughout each period
- ------------------------------------------------------------------------------------------------------------------------------------
                                                           Year Ended March 31,                    October 1, 1993*
                                                                                                        through
                                            1998           1997            1996           1995      March 31, 1994
- ------------------------------------------------------------------------------------------------------------------------------------

<S>                                        <C>            <C>             <C>            <C>            <C>   
Net asset value, beginning of period       $12.88         $11.74          $10.33         $10.28         $10.00
                                           ------         ------          ------         ------         ------
Income from investment operations:
   Net investment income ............        0.02           0.08            0.12           0.28           0.08
   Net realized and unrealized
      gain on investments ...........        5.61           1.27            1.48           0.11           0.22
                                             ----           ----            ----           ----           ----
Total from investment operations.....        5.63           1.35            1.60           0.39           0.30
                                             ----           ----            ----           ----           ----
Less distributions:
   From net investment income........       (0.05)         (0.08)          (0.19)         (0.25)         (0.02)
   From net capital gains ...........       (1.47)         (0.13)           0.00          (0.09)          0.00
                                            -----          -----            ----          -----           ----
Total distributions..................       (1.52)         (0.21)          (0.19)         (0.34)         (0.02)
                                            -----          -----           -----          -----          ----- 
Net asset value, end of period ......      $16.99         $12.88          $11.74         $10.33         $10.28
                                           ======         ======          ======         ======         ======

Total return ........................       45.77%         11.60%          15.59%          3.91%          3.04%

Ratios/supplemental data:
Net assets, end of period (millions).      $ 22.4         $ 16.5         $ 16.9           $ 9.8          $ 5.1
Ratio of expenses to average net assets:
   Before expense reimbursement/
      recoupment....................         1.67%          1.75%           1.77%          2.32%          3.73%+
   After expense reimbursement/
      recoupment....................         1.75%          1.75%           1.75%          1.74%          1.75%+
Ratio of net investment income to
   average net assets:
   Before expense reimbursement/
      recoupment...................          0.21%          0.63%           1.47%          2.74%          0.42%+
   After expense reimbursement/
      recoupment....................         0.13%          0.63%           1.49%          3.32%          2.40%+
Portfolio turnover rate .............       26.27%         41.30%          57.32%         28.65%         34.97%
Average commission rate paid
   per share++........................     $.0709          $.0551            -               -              -
<FN>

*Commencement of operations.

+Annualized.

++For fiscal years  beginning on or after  September 1, 1995, a fund is required
to disclose its average  commission  rate paid per share for security  trades on
which  commissions  are charged.  This amount may vary from period to period and
fund to fund  depending on the mix of trades  executed in various  markets where
trading practices and commission rate structures may differ.
</FN>
</TABLE>

See accompanying Notes to Financial Statements.
<PAGE>
                               The Osterweis Fund

NOTES TO FINANCIAL STATEMENTS at March 31, 1998
- --------------------------------------------------------------------------------


NOTE 1 - ORGANIZATION

      The  Osterweis  Fund (the  "Fund")  is a  diversified  series of shares of
beneficial interest of Professionally Managed Portfolios (the "Trust"), which is
registered  under the  Investment  Company  Act of 1940 (the  "1940  Act") as an
open-end management  investment company. The Fund began operations on October 1,
1993. The investment objective of the Fund is to attain long-term total returns.
The Fund  seeks to  achieve  its  objective  by  investing  primarily  in equity
securities.

NOTE 2 - SIGNIFICANT ACCOUNTING POLICIES

      The following is a summary of significant accounting policies consistently
followed by the Fund.  These policies are in conformity with generally  accepted
accounting principles.

      A.   Security  Valuation.  Investments in securities  traded on a national
           securities  exchange or included in the NASDAQ National Market System
           are valued at the last  reported  sales price at the close of regular
           trading on the last business day of the period;  securities traded on
           an  exchange  or NASDAQ for which  there have been no sales and other
           over-the-counter  securities  are  valued  at the last  reported  bid
           price.  Securities for which quotations are not readily available are
           valued at their respective fair values as determined in good faith by
           the Board of  Trustees.  Short-term  investments  are stated at cost,
           which when combined with accrued interest, approximates market value.

      B.    Federal   Income  Taxes.   The  Fund  intends  to  comply  with  the
            requirements  of the Internal  Revenue Code  applicable to regulated
            investment  companies and to distribute all of its taxable income to
            its  shareholders.  Therefore,  no federal  income tax  provision is
            required.

      C.    Security  Transactions,  Investment Income and Distributions.  As is
            common in the industry,  security  transactions are accounted for on
            the  trade  date.   The  cost  of   securities   owned  on  realized
            transactions are relieved on a first-in,  first-out basis.  Dividend
            income  and  distributions  to  shareholders  are  recorded  on  the
            ex-dividend date.

      D.    Deferred  Organization  Costs.  All of the expenses  incurred by the
            Advisor in connection with the  organization and registration of the
            Fund's  shares will be borne by the Fund and are being  amortized to
            expense on a straight-line basis over a period of five years.

      E.   Use  of  Estimates.   The  preparation  of  financial  statements  in
           conformity with generally  accepted  accounting  principles  requires
           management to make estimates and assumptions that affect the reported
           amounts  of  assets  and  liabilities  at the  date of the  financial
           statements. Actual results could differ from those estimates.

<PAGE>
                               The Osterweis Fund

NOTES TO FINANCIAL STATEMENTS, Continued
- --------------------------------------------------------------------------------

NOTE 3 - COMMITMENTS AND OTHER RELATED PARTY TRANSACTIONS

      For the year ended March 31, 1998, Osterweis Capital Management, Inc. (the
"Advisor")  provided  the Fund  with  investment  management  services  under an
Investment  Advisory  Agreement.  The Advisor  furnished all investment  advice,
office  space,  facilities,  and most of the  personnel  needed by the Fund.  As
compensation for its services,  the Advisor was entitled to a monthly fee at the
annual rate of 1.00% based upon the  average  daily net assets of the Fund.  For
the year ended March 31, 1998, the Fund incurred $190,006 in Advisory fees.

      The Fund is responsible  for its own operating  expenses.  The Advisor has
agreed to reduce  fees  payable  to it by the Fund to the extent  neccessary  to
limit the Fund's  aggregate  annual  operating  expenses to 1.75% of average net
assets.  Any such  reductions  made by the  Advisor in its fees or  payments  or
reimbursement  of  expenses  which are the Fund's  obligation  may be subject to
reimbursement by the Fund within the following three years, provided the Fund is
able to effect  such  reimbursement  and remain in  compliance  with  applicable
limitations.  For the year ended March 31, 1998, the Advisor recouped $15,381 of
such expenses it previously  reimbursed to the Fund,  and at March 31, 1998, the
remaining contingent amount reimbursable to the Advisor totaled $53,881.

      Investment Company  Administration  Corporation (the "Administrator") acts
as the Fund's Administrator under an Administration Agreement. The Administrator
prepares various federal and state regulatory  filings,  reports and returns for
the Fund;  prepares  reports  and  materials  to be  supplied  to the  trustees;
monitors the activities of the Fund's custodian, transfer agent and accountants;
coordinates  the preparation and payment of Fund expenses and reviews the Fund's
expense accruals.  For its services, the Administrator receives a monthly fee at
the following annual rate:

      Under $15 million            $30,000
      $15 to $50 million           0.20% of average daily net assets
      $50 to $100 million          0.15% of average daily net assets
      $100 to $150  million        0.10%  of  average  daily  net assets 
      Over $150 million            0.05% of average  daily net assets

      For  the  year  ended  March  31,  1998,  the  Fund  incurred  $38,001  in
Administration fees.

      First  Fund  Distributors,  Inc.  (the  "Distributor")  acts as the Fund's
principal  underwriter in a continuous public offering of the Fund's shares. The
Distributor is an affiliate of the Administrator.

      Certain  officers  and  trustees  of the  Trust are also  officers  and/or
directors of the Administrator  and Distributor.  As of March 31, 1998, the Fund
shares owned by the Fund's Advisor and its affiliates  totaled  181,120  shares,
out of 1,320,805.
<PAGE>
                               The Osterweis Fund

NOTES TO FINANCIAL STATEMENTS, Continued
- --------------------------------------------------------------------------------

NOTE 4 - PURCHASES AND SALES OF SECURITIES

      The cost of purchases  and the proceeds  from sales of  securities,  other
than  U.S.   Government  and  Government   Agency   obligations  and  short-term
investments,  for the year ended March 31, 1998, were $4,770,652 and $5,324,086,
respectively.

      For the year ended March 31, 1998,  the cost of purchases and the proceeds
from sales of U.S.  Government  and  Government  Agency  obligations,  excluding
short-term securities, were $0 and $858,981, respectively.

NOTE 5 - YEAR 2000 ISSUE (Unaudited)

      Like  other  mutual  funds,   financial  and  business  organizations  and
individuals  around  the  world,  the Fund could be  adversely  affected  if the
computer  systems it uses and those used by the Fund's  brokers  and other major
service providers do not properly process and calculate date-related information
and data from and after  January 1, 2000.  This is  commonly  known as the "Year
2000  issue".  Management  is  assessing  its  computer  systems and the systems
compliance  issues  of  its  brokers  and  major  service  providers.  Based  on
information  available  to  management,  the Fund's  brokers  and major  service
providers are taking steps that they believe are reasonably  designed to address
the Year 2000 issue with  respect to  computer  systems  that they use.  At this
time,  however,  there can be no assurance  that these steps will be sufficient,
and the failure of a timely completion of all necessary  procedures could have a
material  adverse effect on the Fund's  operations.  Management will continue to
monitor the status of and the Fund's exposure to, this issue.
<PAGE>

Report of Independent Auditors
- --------------------------------------------------------------------------------

To the Shareholders of
The Osterweis Fund and the
Board of Trustees of Professionally Managed Portfolios

      We have audited the  accompanying  statement of assets and  liabilities of
The Osterweis Fund (the "Fund"), a series of Professionally  Managed Portfolios,
including  the schedule of  investments,  as of March 31, 1998,  and the related
statement of operations  for the year then ended and the statement of changes in
net assets for each of the two years in the period then ended and the  financial
highlights for each of the three years in the period then ended. These financial
statements  and  financial  highlights  are  the  responsibility  of the  Fund's
management.  Our  responsibility  is to express  an  opinion on these  financial
statements  and  financial   highlights  based  on  our  audits.  The  financial
highlights  for the year ended March 31, 1995 and for the period from October 1,
1993  (commencement of operations)  through March 31, 1994 were audited by other
auditors  whose report dated May 16, 1995  expressed an  unqualified  opinion on
those financial highlights.

      We conducted our audits in accordance  with  generally  accepted  auditing
standards.  Those standards require that we plan and perform the audit to obtain
reasonable  assurance  about  whether the  financial  statements  and  financial
highlights are free of material misstatement.  An audit includes examining, on a
test basis,  evidence  supporting  the amounts and  disclosures in the financial
statements. Our procedures included confirmation of securities owned as of March
31, 1998,  by  correspondence  with the  custodian  and  brokers.  An audit also
includes assessing the accounting principles used and significant estimates made
by  management,   as  well  as  evaluating  the  overall   financial   statement
presentation.  We believe  that our audits  provide a  reasonable  basis for our
opinion.

      In our opinion, the financial statements and financial highlights referred
to above present fairly, in all material respects, the financial position of The
Osterweis  Fund as of March 31, 1998, the results of its operations for the year
then  ended,  and the changes in its net assets for each of the two years in the
period then ended,  and the financial  highlights for each of the three years in
the  period  then  ended,  in  conformity  with  generally  accepted  accounting
principles.
                                                             ERNST & YOUNG LLP

Los Angeles, California
May 1, 1998

<PAGE>
                                     Advisor
                       Osterweis Capital Management, Inc.
                         One Maritime Plaza, Suite 1201
                         San Francisco, California 94111


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

                                   Distributor
                          First Fund Distributors, Inc.
                       4455 E. Camelback Road, Suite 261E
                             Phoenix, Arizona 85018


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

                                    Custodian
                                 Star Bank, N.A.
                                425 Walnut Street
                             Cincinnati, Ohio 45202


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

                                 Transfer Agent
                          American Data Services, Inc.
                                  P.O. Box 5536
                         Hauppauge, New York 11788-0132


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

                              Independent Auditors
                                Ernst & Young LLP
                       515 South Flower Street, 24th Floor
                          Los Angeles, California 90071


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

                                  Legal Counsel
                      Paul, Hastings, Janofsky & Walker LLP
                        345 California Street, 29th Floor
                         San Francisco, California 94104

     This report is intended for shareholders of the Fund and may not be used as
     sales literature unless preceded or accompanied by a current prospectus.

     Past  performance  results  shown in this report should not be considered a
     representation  of  future  performance.   Share  price  and  returns  will
     fluctuate so that  shares,  when  redeemed,  may be worth more or less than
     their original cost.  Statements and other information herein are dated and
     are subject to change.


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