By phone:

William Blair Funds representatives are available Monday through Friday between 8:00 a.m. and 5:00 p.m. Central time.

Mail Correspondence:

William Blair Funds
222 West Adams Street
12th Floor
Chicago, Illinois 60606

Completed Fund Applications:

William Blair Funds
P.O. Box 8506
Boston, MA 02266-8506

OVERNIGHT MAIL ADDRESS:

William Blair Funds
30 Dan Road
Canton, MA 02021-2809

For assistance with Fund Applications, please call 1-800-636-2886.