PRESS RELEASE
6 January 2025

Mayer Brown Advises Blackstone On Its Acquisition Of A Stake In SIA Partners

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Mayer Brown

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Mayer Brown is a distinctively global law firm, uniquely positioned to advise the world’s leading companies and financial institutions on their most complex deals and disputes. We have deep experience in high-stakes litigation and complex transactions across industry sectors, including our signature strength, the global financial services industry.
Paris - Mayer Brown advises Blackstone, on the structuring of its acquisition in global management and AI consulting firm Sia Partners, through a minority investment of up to €250 million, to support the Company’s continued growth.
France

Paris-Mayer Brown advises Blackstone, on the structuring of its acquisition in global management and AI consulting firm Sia Partners, through a minority investment of up to €250 million, to support the Company’s continued growth.

Founder and Chief Executive Officer, Matthieu Courtecuisse, retains a significant majority stake in Sia and will continue to lead the company. It marks the Company’s first partnership with a financial investor since its inception.

With 3,000 employees across 20 countries and 50 offices, the Company works with over 1,000 clients, including Fortune 500 and major tech clients, Sia Partners has become a leading player in the global consulting market, recognised for its deep expertise in strategy, management consulting and AI and ability to leverage technology and data to drive business transformation.

The partnership with Blackstone will support Sia’s acceleration of its expansion across the US market, as well as support strategic M&A.

Contributor

Mayer Brown is a distinctively global law firm, uniquely positioned to advise the world’s leading companies and financial institutions on their most complex deals and disputes. We have deep experience in high-stakes litigation and complex transactions across industry sectors, including our signature strength, the global financial services industry.

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