Mayer Brown advised the Partnership Board of Grant Thornton, one of the leading providers of audit and assurance, tax, and advisory services in the U.S., on a significant investment by New Mountain Capital, LLC. The deal will accelerate Grant Thornton's business strategy.

The transaction is subject to regulatory approval and other standard closing conditions. Following the closing of the transaction, which is expected in the second calendar quarter of 2024, Grant Thornton will operate in an alternative practice structure: Grant Thornton LLP, a licensed CPA firm, will provide attest services, while Grant Thornton Advisors LLC will provide business advisory and non-attest services.

The team was led by Corporate & Securities/Mergers & Acquisitions partners Paul Theiss (Chicago) and Camila Panama (New York) and included Corporate & Securities associates Gina Chen and Ashleigh Carr (both New York); and Employment & Benefits partner Stephanie Vasconcellos (Chicago).