Cathay Capital completes sale of its minority stake in Diot-Siaci
November 20, 2025
Europe
Paris, November 20, 2025 – The Diot-Siaci Group, the European leader in corporate insurance and reinsurance consulting and brokerage, announced today the completion of its new ownership structure, following the signing of the agreement in August 2025.
With this closing, Cathay Capital is selling its minority stake of approximately 5% in the Group’s capital, which it has held since 2021, following the merger between Diot-LSN and Siaci Saint Honoré.
Under the leadership of Co-Chairmen Pierre Donnersberg and Christian Burrus and CEO Cédric Charpentier, Diot-Siaci has grown very significantly over the past four years, both organically and through mergers and acquisitions.
Since 2021, the Diot-Siaci Group has consolidated its position as the leader in France and Europe in corporate insurance and reinsurance consulting and brokerage, and has expanded its international footprint in Asia, the Middle East, and Africa.
“Cathay Capital is proud to have supported Diot-Siaci’s international growth as an active minority shareholder alongside the founders and management, and leading institutional investors (Ontario Teachers’ Pension Plan Board, Bpifrance, and Mubadala). We are delighted with the success of this transaction and are confident that the Group will continue on its growth trajectory under its new shareholding structure.” said Bruno Bézard, Managing Partner at Cathay Capital.
About Diot-Siaci
Diot-Siaci is a leading insurance and reinsurance consulting and brokerage group in France and Europe, with strong positions in Asia, the Middle East and Africa. It designs and develops innovative, tailor-made solutions for its clients, including large corporations, mid-sized companies, SMEs and professionals, in both personal insurance and property and liability insurance, in line with its CSR commitments. DiotSiaci has a stable and independent shareholder base, enabling it to support its clients in their development and transformation. It meets their needs across the entire value chain in property and liability insurance, social protection (health, personal protection, retirement), HR consulting and international mobility, credit insurance, surety and financing, captive management and reinsurance. With more than 7,000 employees and revenue of over €1 billion in 2024, the group operates worldwide through its own offices and its Diot-Siaci Global Partners network.
Find out more at www.diot-siaci.com
About Cathay Capital
Cathay Capital is a private equity and venture capital firm that supports companies in Europe, North America, and Asia. Cathay Capital helps companies at all stages of development, from start-ups to mid-sized companies, to unlock growth opportunities, drive international expansion, and enable sustainable transformation. With its international reach and deep local expertise, its platform connects people – investors, entrepreneurs, management teams, and leading corporations – to share knowledge and resources, fostering the evolution and transformation of businesses. Founded in 2006 with a strong entrepreneurial heritage, Cathay Capital now manages more than 6 billion euros in assets and has completed more than 280 investments in sectors such as healthcare, technology, and consumer goods from its offices in Paris, New York, San Francisco, Munich, Berlin, Madrid, Shanghai, Beijing, and Singapore.
For more information, please visit www.cathaycapital.com