Marsh McLennan announces rebranding

Marsh McLennan announced Tuesday that it will rebrand as Marsh across its business starting in January 2026 and has launched a new unit combining its technology, data and operations teams.

The company’s stock ticker symbol will change from MMC to MRSH in January 2026. Its four businesses will change to the new Marsh brand starting in 2027, after a transition period.

Marsh, its main broking arm and Mercer, its consulting business, will each be branded Marsh, and Guy Carpenter & Co., its reinsurance broking arm, will become Marsh Re.

Marsh McLennan Agency, the small and mid-sized brokerage unit of Marsh, will become Marsh Agency by 2027.

Oliver Wyman will become “Oliver Wyman, a Marsh business,” while its operating unit Oliver Wyman Group will become Marsh Management Consulting.

“In an increasingly complex environment, clients are seeking advice, solutions and insights that draw on expertise from across our firm,” Marsh McLennan President and CEO John Doyle said in a statement. “The changes we announce today reflect the way we continue to bring our company together to better help our clients overcome challenges and find opportunity.”

The new unit, called Business and Client Services, is led by Paul Beswick, Marsh McLennan’s chief information and operations officer. The unit will create a data and technology ecosystem that uses AI and other tools to improve results for clients and increase operational efficiency.

At year-end 2024, Marsh had approximately 48,800 employees and Guy Carpenter had 3,600. The brokerage’s consulting business, comprising Mercer and Oliver Wyman Group, had around 30,500 employees.