Corporate Information

Corporate Governance

Corporate Information

Important corporate information for Aon plc, including mailing addresses, shareholder points of contact, and our registered public accounting firm, is provided below.

Aon plc

Fifteen George's Quay
Dublin 2
Ireland
D02 VR98

Aon Global Operational Headquarters

The Aon Centre
The Leadenhall Building
122 Leadenhall Street
London England EC3V 4AN
Tel: +44 (0) 20 7623 5500
Fax: +44 (0) 20 7621 1511

Contact Shareholder Relations

Aon plc
c/o Investor Relations
200 East Randolph
Chicago, IL 60601
847-442-0622
[email protected]

Stock Trading

Aon plc's common stock is listed on the New York Stock Exchange. Ticker symbol: AON

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