Common Contracts

350,000,000 4.500% Senior Notes due 2028 UNDERWRITING AGREEMENT

New York • July 8th, 2020

• Jurisdiction
  New York
• Filed
  July 8th, 2020

As Representatives (the “Representatives”) of the several Underwriters listed in Exhibit A hereto c/o J.P. Morgan Securities LLC

Aon Corporation Aon plc $350,000,000 4.500% Senior Notes due 2028 UNDERWRITING AGREEMENT

Aon PLC • December 3rd, 2018 • Insurance agents, brokers & service • New York

• Company
  Aon PLC
• Filed
  December 3rd, 2018
• Industry
  Insurance agents, brokers & service
• Jurisdiction
  New York

As Representatives of the several Underwriters set forth in Exhibit A of the below-referenced Underwriting Agreement