Marsh McLennan Appoints David Liston as US and Canada Chief Commercial Officer

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Marsh McLennan, a leading professional services firm specializing in risk, strategy, and people, has announced the appointment of David Liston as Chief Commercial Officer (CCO) for the US and Canada, effective immediately. Reporting to Pat Tomlinson, CEO of Marsh McLennan US and Canada, and President of Mercer, as well as Hans van Heukelum, Marsh McLennan’s global CCO, Liston will play a pivotal role in driving collaboration and innovation across Marsh, Mercer, Guy Carpenter, and Oliver Wyman, with a focus on maximizing client impact and fostering business growth in the region.

Mr. Tomlinson expressed confidence in Liston’s ability to deliver value to colleagues, clients, and the business, citing his client-centric approach, extensive leadership background, and collaborative mindset.

Liston brings a wealth of experience to his new position, having previously served as Marsh US and Canada Corporate Segment Leader and spearheaded mid-market offerings across Marsh and Mercer. His appointment follows Susan Potter’s transition to President of Mercer US and Canada earlier this year.

With over 30 years at Marsh, Liston has held various client-facing and leadership roles, including US Sales and Marketing Leader, New York Office Head, Seattle Office Head, and roles in Florida specializing in production and client executive responsibilities. He will continue to be based in New York.

Commenting on his appointment, Liston expressed enthusiasm about Marsh McLennan’s breadth of expertise and actionable solutions across its four businesses. He looks forward to collaborating with colleagues to provide clients with innovative solutions that empower them to navigate today’s complex business landscape effectively.