On October 19, 2023, Aon plc (?Parent?), Aon Corporation (?Aon US?), Aon Global Holdings plc (?AGH?), Aon Global Limited (?AGL?) and Aon North America, Inc. (?ANA?) entered into a Credit Agreement (the ?Revolving Credit Agreement?) with Citibank, N.A. (?Citibank?), as administrative agent, the lenders party thereto (collectively, the ?Revolving Lenders?), Morgan Stanley Senior Funding, Inc. and HSBC Bank USA, National Association, as syndication agents, and Citibank, Morgan Stanley Senior Funding, Inc. and HSBC Securities (USA) Inc., as joint lead arrangers and joint bookrunners, pursuant to which, subject to the conditions set out in the Revolving Credit Agreement, the Revolving Lenders committed to provide a $1,000,000,000 unsecured revolving credit facility. The Revolving Credit Agreement replaces the $750,000,000 revolving credit facility of Parent, Aon US, AGH, and AGL dated as of October 19, 2017, which was scheduled to mature on October 19, 2024. Borrowings under the Revolving Credit Agreement may be made by Parent, Aon US, AGH, AGL or any other subsidiary designated as a borrower in U.S. dollars, pounds sterling or euros.

Borrowings (i) in U.S. dollars will bear interest, at the borrower?s option, at an adjusted term SOFR rate or an alternate base rate, in each case, plus an applicable margin, (ii) in euros will bear interest at the eurocurrency rate plus an applicable margin and (iii) in pounds sterling will bear interest at SONIA plus an applicable margin, in each case, as set forth in the Revolving Credit Agreement. A facility fee owed on the aggregate commitments under the Revolving Credit Agreement is also based on the public debt rating of Parent?s long-term senior unsecured debt and may change in connection with a change to Parent?s debt ratings. The Revolving Credit Agreement has a maturity date of October 19, 2028, subject to optional one-year extensions, and contains covenants with respect to the ratio of consolidated adjusted EBITDA to consolidated interest expense (which may not be less than 4.0 to 1.0) and the ratio of consolidated funded debt to consolidated adjusted EBITDA (which may not be more than 3.25 to 1.00, subject to certain exceptions), as well as other customary covenants, undertakings and events of default.