William Blair Small Cap Value Fund Class I Fonds

The investment seeks long-term capital appreciation. Under normal market conditions, the fund invests at least 80% of its net assets (plus the amount of any borrowings for investment purposes) in equity securities of small capitalized (“small cap”) companies. For purposes of the fund, the Adviser considers a company to be a small cap company if it has a market capitalization no larger than the largest capitalized company, included in the Russell 2000® Index at the time of its investment.