Mercer names Deborah Wardle international investment chief
Wardle reports to global chief investment officer Niall O'Sullivan and stays in London, completing a wider reshaping of the consultant's investment bench.
Mercer on 22 July appointed Rebecca Wardle to lead its international investment leadership, in a move that also completes a wider reshaping of the consultant’s investment bench. Wardle will report to Mercer global chief investment officer Niall O’Sullivan and remain based in London.
The new role covers Mercer’s international investment leadership and replaces Garvan McCarthy, who continues as global alternatives chief investment officer. Mercer said the appointment takes effect immediately.
The move sits alongside a broader leadership buildout that has seen Hooman Kaveh move into the newly created role of Executive Chair for Mercer’s Investment Platform from 1 May 2026, after serving as global CIO. Mercer said Kaveh will continue to chair the Investment Governance Committee, while O’Sullivan will lead the full range of investment capabilities and all asset class teams will report to him.
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