Liberty Mutual Names Gareth Rees Global Lines Leader for Global Transaction Solutions

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By: | July 17, 2026
Gareth Rees

Liberty Mutual Insurance Group has appointed Gareth Rees as global lines leader for its Global Transaction Solutions (GTS) business, effective July 1. Rees, who is based in London, reports to Thomas Leahy, global product leader – Financial Lines, Liberty Mutual.

“We are delighted to announce Gareth’s new role as leader of GTS,” Leahy said. “He has spent the past decade helping to build out our global team of industry-leading transactional risk experts. Under his leadership, we are confident GTS will continue to provide specialist expertise and agile solutions to its clients and brokers in an increasingly complex transactional risk environment.”

A former corporate lawyer with extensive M&A experience across multiple industry sectors, Rees joined GTS in 2015 and most recently served as chief underwriting officer for six years. In his new role, he will work closely with GTS’ leadership team across EMEA, APAC and the Americas to drive the business’s strategic priorities and maintain its market-leading transactional liability offering. Rees succeeds Rowan Bamford, who left the business to pursue new opportunities. &

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