Key director statistics* 64% 65 8 93% Meet Diversity Average Age Years Average Independent Criteria Tenure  36% Women  40s  50s  60s  70s  0-6  7-14  15+  Independent  29% Racial/Ethnic diversity  Not independent *Key Director Statistics are as of May 18, 2023 We appointed our eighth In the past 5 years, we have appointed As of our 2023 annual meeting, consecutive director who meets 5 independent directors, all of whom we expect 36% of our board our diversity criteria in 2023 meet our diversity criteria to be women Board diversity Marsh McLennan has a strong history of Board diversity. Our first woman director, Adele Smith Simmons, joined the Board in 1978. Ms. Simmons served as the first chair of the Corporate Responsibility Committee of our Board, which was the predecessor to our Board ESG Committee and served as a foundation for today’s ESG initiatives. We are committed to maintaining an inclusive and diverse Board, and our first director meeting our racial and ethnic diversity criteria was appointed in 1998. Of the fourteen directors standing for re-election at our 2023 annual meeting, four are men who are racially or ethnically diverse and five are women. Overview Environment Social Governance Appendix 2022 ESG REPORT 47