Shareholder Information

Company Headquarters

Packaging Corporation of America
1 North Field Court
Lake Forest, IL 60045
(847) 482-3000

Stock Exchange

Symbol: PKG
New York Stock Exchange

Transfer Agent and Registrar

To transfer securities, change address or replace lost certificated, please contact:

Packaging Corporation of America Shareholder Services
c/o Computershare Trust Company N.A.
P.O. Box 505000
Louisville, Kentucky 40233-5000

(877) 282-1168 (North America)
(781) 575-2732 (outside North America)

Independent Auditors