Marsh mclennan announces john q. doyle to succeed daniel s.

New york--(business wire)--marsh mclennan (nyse: mmc), the world's leading professional services firm in the areas of risk, strategy and people, announced today that john q. doyle, 58, has been named president and chief executive officer, effective january 1, 2023. daniel s. glaser, 62, will retire from marsh mclennan at year end following a decade leading the company through a period of extraordinary growth and change. mr. doyle has served as group president and chief operating officer of mars
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