THE OSTERWEIS FUND,
A SERIES OF PROFESSIONALLY MANAGED PORTFOLIOS
SUPPLEMENT DATED SEPTEMBER 2, 1999
TO PROSPECTUS DATED JULY 30, 1999
You may buy and sell shares of the Fund through certain brokers (and their
agents) that have made arrangements with the Fund to sell its shares. When you
place your order with such a broker or its authorized agent, your order is
treated as if you had placed it directly with the Fund's Transfer Agent, and you
will pay or receive the next price calculated by the Fund. The broker (or agent)
holds your shares in an omnibus account in the broker's (or agent's) name, and
the broker (or agent) maintains your individual ownership records. The Advisor
may pay the broker (or its agent) for maintaining these records as well as
providing other shareholder services. The broker (or its agent) may charge you a
fee for handling your order. The broker (or agent) is responsible for processing
your order correctly and promptly, keeping you advised regarding the status of
your individual account, confirming your transactions and ensuring that you
receive copies of the Fund's prospectus.
