William Blair International Growth Fund Class I

Over

The fund normally invests at least 80% of its total assets in a diversified portfolio of equity securities, including common stocks and other forms of equity investments, issued by companies of all sizes domiciled outside the U.S. that the adviser believes have above-average growth, profitability and quality characteristics. Its investments are normally allocated among at least six different countries and no more than 50% of the fund's equity holdings may be invested in securities of issuers in one country at any given time.