Our ESG philosophy Our commitment to ESG starts at home We model the behaviors we want to see in the world. Strong and effective corporate governance will help promote these behaviors and protect our culture. Our people are our greatest strength Our company's greatest strength is the collective talent of our people. Inclusion means more than acceptance — it means belonging. Every person has a unique knowledge and experience. Individually, that makes us valuable — and together, extraordinary. Our future requires climate resilience Climate change is a global issue and we all have a role to play in addressing it. A low-carbon future can support a sustainable, competitive business environment, while creating new opportunities for OUR ESG APPROACH Marsh McLennan and all of our stakeholders. Our company plays an important role Many issues of public importance cannot be solved Our ESG strategy is built on our ESG philosophy. At Marsh McLennan, ESG is fundamental to our without corporate leadership — from developing and identity and the way we show up for our clients and the communities we impact. supporting high-quality and accessible healthcare We have formally integrated environmental, social and governance factors into our decision- systems to building climate resilience, addressing making processes since 2008, and believe that transparent and consistent disclosure enables cyber risk and helping close the world's protection better-informed business and investment decisions. gaps. Marsh McLennan is uniquely positioned to help society take on these challenges. The Board ESG Committee oversees and supports the company’s commitment to social, Change is up to all of us environmental and other public policy initiatives. The Committee reports to the Marsh McLennan Board on a regular basis (typically each board meeting). No individual, no company and no country can effect Our Management ESG Committee supports the Marsh McLennan Board and the ESG Committee change alone. We will engage with our colleagues, in identifying and advancing ESG priorities. Members are drawn from senior management our clients, our shareholders, our communities and across our four global businesses and corporate departments, with our Deputy General Counsel governments around the world to take on the great & Corporate Secretary serving as Chair. challenges of our time. Overview Environment Social Governance Appendix 2022 ESG REPORT 8