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Corporate Information
Aon Corporation Global Headquarters
Aon Center
200 East Randolph Street
Chicago, IL 60601
(312) 381-1000
Contact Shareholder Relations
Aon Corporation
c/o Investor Relations
200 East Randolph
Chicago, IL 60601
1.866.657.8632 (within the U.S. and Canada)
Outside the U.S. and Canada: 312.381.1052
investors@asc.aon.com
Stock Trading
Aon Corporation's common stock is listed on the New York Stock Exchange.
Ticker symbol: AOC
Annual Stockholders' Meeting
The 2009 Annual Meeting of Stockholders of Aon Corporation will be held on Friday, 15 May 2009 at Chicago's Aon Center, Indiana Room.
Transfer Agent and Dividend Reinvestment Services Administrator
Computershare
P.O. Box 43069
Providence, RI 02940-3069
Within the U.S. and Canada: (800) 446-2617
Outside the U.S. and Canada: (781) 575-2723
TDD/TTY for hearing impaired: (800) 952-9245
www.computershare.com/Equiserve
Independent Registered Public Accounting Firm
Ernst & Young LLP