Ardian has agreed to acquire a controlling interest in Diot-Siaci, purchasing stakes from Ontario Teachers’ Pension Plan, Bpifrance, Cathay Capital, and other minority investors.

The Burrus Group will remain a significant shareholder, with Ardian and Burrus jointly controlling the European corporate insurance brokerage leader alongside the management team.

The transaction, which remains subject to regulatory and competition approvals, will support Diot-Siaci’s global growth strategy. The group plans to expand its footprint in industrial risks, marine and personal insurance, HR consulting, credit insurance, international mobility, and reinsurance. It already operates across Continental Europe, the UK, Asia, the Middle East, and Africa.

Co-Chairs Pierre Donnersberg and Christian Burrus, together with CEO Cédric Charpentier, will continue to lead the company, with management making a significant reinvestment in the business. Ardian has also secured more than €700m from institutional partners, including sovereign wealth funds such as Mubadala, to co-invest in the deal.

“In addition to the commitment from our Buyout fund, we have successfully raised more than €700 million in less than two months from institutional partners to co-invest in this deal, including several sovereign wealth funds and international investors,” emphasized Olivier Personnaz, Managing Director and Head of Buyout Equity Capital Markets at Ardian.

Ontario Teachers’ highlighted that since its 2021 investment, Diot-Siaci has grown revenues 1.6x to €1bn, with significant expansion in the Middle East and Africa.

Advisors on the transaction included Evercore as M&A advisor, BCG for commercial and operational due diligence, and PwC for financial due diligence alongside Weil Gotshal & Manges for legal. Morgan Stanley acted as financial advisor, with Messier and Newco also serving as M&A advisors. 8Advisory provided financial due diligence, while Roland Berger led commercial due diligence.

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