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    31.08.2025

    ADVANT Altana advises Mercer, a Marsh McLennan company, on the acquisition of ConvictionsRH, a French leading HR consulting firm

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    ADVANT Altana advises Mercer, a Marsh McLennan company, on the acquisition of ConvictionsRH, a French leading consulting firm in HR transformation, supporting companies of all sizes in their strategic, organizational, digital, technological, and cultural changes.

    ConvictionsRH employs more than 200 expert consultants in six different offices.

    Mercer, a Marsh McLennan (NYSE: MMC) company, is a leading global advisor that helps clients reimagine the world of work, rethink retirement and investment strategies, and improve employee health and well-being. Marsh McLennan is a global leader in professional services in risk, strategy, and human resources, advising clients in 130 countries through four companies: Marsh, Guy Carpenter, Mercer, and Oliver Wyman. With annual revenues of more than $24 billion and more than 90,000 employees, Marsh McLennan helps clients build confidence to succeed through the power of perspective.

    Once the acquisition is complete, ConvictionsRH's clients and employees will have access to Mercer's global capabilities, solutions, and expertise in the areas of HR management, pensions, employee benefits, and investments. In addition, they will benefit from the insurance, risk management, and strategy consulting expertise of Marsh McLennan's four entities to help them achieve their growth and transformation goals.

    This transaction is an illustration of ADVANT Altana’s ability to manage complex cross-border transactions for US clients investing in Europe and requiring the involvement of numerous practice areas. 

    The ADVANT Altana team was led by Jean-Nicolas Soret, Eleonore Vucher-Bondet and María Bacca-Perez (M&A) and included Mickaël d’Allende and Laura Beserman (Employment), Philippe de Saint-Bauzel, Marie Darcq and Alexandre Thuau-Renaudet (Tax), Jean-Guy de Ruffray, Camille Raclet and Clémence Aladjidi (IP/IT), Frédéric Manin and Delphine Laget (Contracts), Amélie Pinçon and Alexandre Majbruch (Real Estate).

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