MMC 10-Q Quarter ended March 31, 2011

Business Experience: Ms. Ingram was Global Chairman of Wunderman Thompson, an international global advertising agency. Ms. Ingram held previous roles at WPP plc, a media conglomerate, including Global Chief Executive Officer of J. Walter Thompson, Grey UK’s Group Chief Executive Officer, Global Leader on their Procter & Gamble account, as well as roles at WPP’s wholly owned data investment division, Kantar. Prior to joining WPP plc, Ms. Ingram was Chief Executive Officer of McCann Worldgroup in London and Chief Executive Officer of Saatchi & Saatchi’s London office. Ms. Ingram previously served as a non-executive director of London Stock Exchange-listed companies Sage Group plc and Serco Group plc. She is a Trustee of Save the Children International (UK) and was awarded an OBE (Officer of the Most Excellent Order of the British Empire) for her services to tourism through her work as Chairman of Visit London. Ms. Ingram serves on the Board of Directors of Intertek plc, Marks & Spencer plc and Reckitt Benckiser Group plc.

At the 2025 annual meeting, stockholders will vote on the election of eleven (11) directors. H. Edward Hanway currently serves as the Board’s Independent Chair. In accordance with the mandatory retirement provisions in our Governance Guidelines, the Board has determined that Oscar Fanjul will not stand for re-election at the May 2025 annual meeting.

Lloyd Yates is President & Chief Executive Officer of NiSource Inc. Mercer was engaged by NiSource Inc. to provide consulting services in the ordinary course of its business for approximately $339,000 in 2024. Mark C. McGivney is the Company’s Chief Financial Officer. Sophie McGivney, Mr. McGivney’s daughter, is an Associate at Oliver Wyman. In 2024, Ms. McGivney received compensation totaling approximately $158,000.

Business Experience: Judith Hartmann is an Operating Partner at Sandbrook Capital, a private investment firm focused on transforming energy infrastructure. From 2015 to 2022, Judith Hartmann was Deputy CEO and Group Chief Financial Officer of ENGIE S.A., a French multi-national utility company operating in the fields of electricity generation, energy transportation and distribution and energy services. She was the interim Co-CEO in 2020. She held P&L responsibility for the North American and UK/Ireland business units and oversaw Procurement and Corporate Social Responsibility (CSR). Prior to ENGIE, Ms. Hartmann served as Chief Financial Officer and member of the Executive Board of the international media and services corporation Bertelsmann SE & Co. KGaA from 2012 to 2015. Prior to that, she served in a number of financial and operational roles at General Electric since 2000 in the US, Latin America and Europe, including at Global Service, GE Healthcare Clinical Systems, GE Water Europe, Middle East & Africa, GE Healthcare Latin America and GE Germany. Before that, she held positions in The Walt Disney Company and Transport Canada. Ms. Hartmann is expected to serve on the Board of Directors of Ørsted A/S, effective as of April 3, 2025, and was a Non-Executive Director of Unilever, Suez, Electrabel, International Power, RTL Group, Penguin Random House and Gruner + Jahr. She holds a PhD in Economics (Hons) and an MBA from the WU University of Business Administration and Economics.

Business Experience: Mr. Doyle is President and CEO of Marsh McLennan. Previously, Mr. Doyle served as Group President and Chief Operating Officer, responsible for the strategy and operational objectives of Marsh McLennan’s four global businesses. He joined the firm in 2016 as President of Marsh, then led Marsh as President and CEO from 2017 to 2021. An industry veteran with more than 35 years of management experience, Mr. Doyle began his career at AIG, where he held several executive positions. He is a Trustee of the Inner-City Scholarship Fund, a member of the Board of Overseers of the Maurice R. Greenberg School of Risk Management, Insurance and Actuarial Science at St. John’s University and a member of the Board of the New York Police and Fire Widows’ and Children’s Benefit Fund. Mr. Doyle serves as the Chairman of the US Federal Advisory Committee on Insurance.

Business Experience: Ms. Lute is the Former Deputy Secretary of Homeland Security. She serves as a Strategic Director for SICPA North America, a company that protects the integrity and value of products, processes, and documents, including most of the world’s banknotes. Ms. Lute also served as Special Advisor to the Secretary-General of the United Nations, where she has held several positions in peacekeeping, peace building and political affairs. Previously, Ms. Lute served as Chief Executive Officer of the Center for Internet Security, an operating not-for-profit organization providing cybersecurity services for state, local, tribal and territorial governments. She began her distinguished career in the United States Army serving in Europe, Desert Storm, as well as on the National Security Council staff under both Presidents George H.W. Bush and William Jefferson Clinton. Ms. Lute holds a Ph.D. in political science from Stanford University and a J.D. from Georgetown University. Ms. Lute serves on the Board of Directors of Union Pacific Corporation and Shell plc and previously served as Director of Atlas Worldwide Holding Corporation.

• On January 15, 2025, Paul Beswick’s role was expanded to Senior Vice President, Chief Information & Operations Officer. Mr. Beswick has served as Chief Information Officer of Marsh McLennan since 2021.

At the 2025 annual meeting, stockholders will vote on the election of eleven (11) directors. H. Edward Hanway currently serves as the Board’s Independent Chair. In accordance with the mandatory retirement provisions in our Governance Guidelines, the Board has determined that Oscar Fanjul will not stand for re-election at the May 2025 annual meeting.

Required Qualifications. The Board has determined that each of the Audit Committee members is independent within the meaning of applicable laws and listing standards. Additionally, all members of the Audit Committee are “financially literate,” as required by the NYSE and determined by the Board. The Board has determined that Anthony K. Anderson, Judith Hartmann and Jan Siegmund have the requisite qualifications to satisfy the SEC definition of “audit committee financial expert.”