Transaction Details

Footnotes

Vesting and distribution to reporting person of 4,826 shares underlying restricted stock units of which 2,464 were withheld by Marsh & McLennan Companies to cover applicable taxes. These 4,826 shares underlying restricted stock units relate to performance stock units that were granted on February 23, 2023 for the performance period 2023-2025. | Reflects shares acquired by the Marsh & McLennan Companies 401(k) Savings & Investment Plan (SIP) Custodian at prevailing market prices. Information reported herein is based on reporting person's Plan Statement as of February 28, 2026. | The security converts to Marsh & McLennan Companies common stock on a 1-for-1 basis. | Not applicable. | Reflects additional stock units acquired by the Supplemental Savings & Investment Plan (SSIP) Custodian at prevailing market prices. Information reported herein is based on Reporting Person's Plan Statement as February 28, 2026.