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Grant Thornton Advisors expands multinational platform to include Grant Thornton New Zealand

11.06.25

Simpson Thacher is representing Grant Thornton Advisors LLC (“Grant Thornton Advisors”) in connection with the further expansion of Grant Thornton’s multinational platform through the pending acquisition of Grant Thornton New Zealand. The transaction is expected to close later this year.

With over US$40 million in annual revenue and a team of 300+ dedicated professionals, Grant Thornton Advisors’ most recent planned addition of New Zealand will further expand the platform’s reach across 20 time zones into the Asia-Pacific region. 

The transaction bolsters the rapid growth of the multinational, muti-disciplinary platform that Grant Thornton Advisors established in January 2025 with the support of an investor group led by New Mountain Capital. The platform already integrates more than a dozen high-performing firms across the Americas, Europe and the Middle East into an integrated advisory and tax practice, complemented by independent audit practices.

The platform currently includes Grant Thornton firms in the US, Ireland, France, the United Arab Emirates, the Netherlands, the Channel Islands and the Cayman Islands, and will include previously announced transactions with Grant Thornton firms in Spain, Switzerland, Liechtenstein, Belgium and Luxembourg that are anticipated to close in the coming weeks. Further, Grant Thornton Advisors has also announced transactions to enhance its advisory offerings with Auxis, a pioneer in outsourcing and business modernization services, and Stax, which specializes in commercial due diligence and value creation. Simpson Thacher has represented Grant Thornton Advisors in connection with each of these transactions.

The Simpson Thacher team includes Ben Schaye, Daisy Wu, Malik Ladhani, Carolina Vieira and Darcy James (M&A); Linda Barrett, Andrew Blau, Allison Sutherland, John O’Neill, Nicolas Deguines, Taylor Nicole Todd and Benjamin Faber (Executive Compensation and Employee Benefits); Andrew Purcell, Adam Hersch and Roberto Arza (Tax); Ben Persina, Janhvi Barthwal, Alexandra Cullen and Jordon Pollard (Credit).