John Doyle succeeds Dan Glaser as CEO of Marsh McLennan

29 September 2022 2 min. read
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John Doyle has been named president and chief executive officer of professional services firm Marsh McLennan, effective January 1, 2023. He will also join the New York-based company’s board of directors on January 1.

Doyle – currently COO of Marsh McLennan – will succeed Daniel Glaser, who has served as CEO since 2013.

Glaser will in January retire from his position as president and CEO, as well as from the board of directors. During his decade-long tenure, the company increased revenues from $12 billion to over $20 billion and completed the $5.6 billion acquisition of JLT.

“It’s been an honor to lead this great Company,” Glaser said. “Very few 150-year-old firms are as relevant, resilient, and successful as Marsh McLennan is today.”

Doyle has more than 30 years of management experience in commercial insurance underwriting and brokerage. Prior to being named COO of Marsh McLennan in January, he spent four years as CEO of Marsh, the firm’s risk advisory and insurance broking subsidiary.

John Doyle, CEO, MarshMcLennan

Doyle began his career at AIG and held several executive roles, including CEO of AIG Commercial Insurance, and president and CEO of AIG Property and Casualty in the US.

“John has been an indispensable partner to me and the other members of our Executive Committee in delivering on our strategy,” Glaser added. "He knows our businesses well and is focused on creating best-in-class solutions for our clients. I am confident that this organization’s extraordinary success will continue under John’s leadership.”

Marsh McLennan is comprised of Marsh (insurance); Guy Carpenter (reinsurance); Mercer (HR consulting and asset management); and Oliver Wyman (management consulting).

“I am thankful to Dan and to our Board for their support and confidence in me," Doyle said. "We have terrific momentum and the capabilities and expertise needed to drive innovation and growth, deliver critical client solutions, and create value for shareholders. I look forward to partnering with our 83,000 colleagues to write our next chapter.”

The company earlier this year appointed Moreland Murray as chief inclusion and diversity officer.