MRSH: Material agreement · Termination of an agreement

Item 1.01. Entry into a Material Definitive Agreement On June 2, 2026, Marsh & McLennan Companies, Inc. (the “Company”) and certain of its domestic and foreign subsidiaries entered into a new Amended and Restated 5 Year Credit Agreement, dated as of June 2, 2026, among the Company, as borrower, the designated subsidiaries party thereto as borrowers, Citibank, N.A., as administrative agent, and the lenders from time to time party thereto (the “Credit Agreement”). The Credit Agreement provides for a multi-currency unsecured $4.25 billion five-year revolving credit facility (the “New Facility”). The interest rate on the New Facility is based on Term SOFR plus a fixed margin which varies with the Company’s credit ratings. The New Facility expires in June 2031 and requires the Company to maintain certain coverage and leverage ratios which are tested quarterly. The foregoing summary of the Credit Agreement is only a summary and is subject to, and qualified in its entirety by, the full text of the Credit Agreement, which is filed as Exhibit 10.1 hereto and incorporated by reference herein. Item 1.02 Termination of a Material Definitive Agreement In connection with the New Facility, on June 2, 2026, the Company terminated its multi-currency unsecured $3.5 billion five-year revolving credit facility under the Amended and Restated 5 Year Credit Agreement, dated as of October11, 2023, among the Company, as borrower, the designated subsidiaries party thereto, as borrowers, Citibank, N.A., as administrative agent, and the lenders from time to time party thereto. Item 2.03. Creation of a Direct Financial Obligation or an Obligation under an Off-Balance Sheet Arrangement of a Registrant. On June 2, 2026 the Company entered into the Credit Agreement as described under Item 1.01 above.