Marsh & McLennan amends bylaws to reflect DGCL updates and universal proxy rules

On and effective January 14, 2026, the Board of Directors of Marsh & McLennan Companies, Inc. (the “Company”) approved amended and restated bylaws of the Company (the “Amended and Restated Bylaws”). Among other things the amendments (i) update and conform various provisions to reflect the latest amendments to the Delaware General Corporation Law (the “DGCL”), including related to the stockholder list and quorum for committee meetings, (ii) update certain procedural and informational requirements under the advance notice provisions related to director nominations and other proposals, including related to the requirement to provide certain disclosures and information to the Company, the number of nominees the stockholder can nominate and reflecting the universal proxy rules under Rule 14a-19, (iii) clarify the voting standard for matters submitted to the stockholders and (iv) clarify the authority of the chair of the meeting of stockholders.