Key Takeaways
- • Grant Thornton Advisors is acquiring CBIZ in an all-cash transaction valued at $5 billion, with CBIZ shareholders receiving $55 per share, representing a 17.8% premium to previous closing price.
- • The deal, backed by New York-based private equity firm New Mountain Capital, is expected to close in the fourth quarter of 2026 and represents one of the largest professional services acquisitions in more than a generation.
- • The transaction will position Grant Thornton as a top-five accounting and advisory firm in the U.S., combining two top-ten firms and creating a combined platform with approximately 25,000 professionals across multiple service lines including accounting, tax, advisory, benefits, and insurance.
- • Grant Thornton Advisors, a multinational platform within Grant Thornton International Limited, currently operates across nearly 20 aligned firms spanning the Americas, Europe, Middle East, and Asia-Pacific regions.
- • CBIZ operates with more than 9,500 team members across 23 major U.S. markets and provides services in accounting, tax, advisory, benefits, insurance, and technology solutions.
Summary
Grant Thornton Advisors has agreed to acquire CBIZ in a landmark all-cash transaction valued at $5 billion, with the deal expected to close by the end of the fourth quarter of 2026. Under the agreement, CBIZ shareholders will receive $55 per share, representing a significant 17.8% premium over the company's previous closing price. The acquisition represents one of the largest professional services deals in more than a generation and signals intensified consolidation within the accounting and advisory sector.
The transaction is backed by New Mountain Capital, a New York-based private equity firm managing approximately $60 billion in assets under management across private equity, credit, and net lease investment strategies. New Mountain Capital's involvement underscores the growing role of institutional capital in reshaping the professional services landscape, particularly as mid-market accounting firms pursue scale and cross-border capabilities to compete with the "Big Four" accounting firms.
The combined entity will emerge as a top-five U.S. accounting and advisory firm, uniting two established top-ten players. CBIZ currently operates with more than 9,500 team members across 23 major markets nationwide, offering services in accounting, tax, advisory, benefits, insurance, and technology solutions. Grant Thornton Advisors operates as part of a multinational platform spanning nearly 20 aligned firms with approximately 25,000 professionals across the Americas, Europe, Middle East, and Asia-Pacific regions. The merger will consolidate these capabilities, enabling the combined platform to deliver enhanced cross-border solutions and expanded service breadth to mid-market and enterprise clients.
The strategic combination reflects ongoing industry consolidation driven by client demand for integrated, technology-enabled advisory services and the ability to execute on complex, multi-jurisdictional engagements. By leveraging Grant Thornton's international platform and CBIZ's deep U.S. market presence and specialized expertise, the acquisition positions the combined firm to compete more effectively in high-value service categories and geographic markets, while providing institutional investors with exposure to the resilient professional services sector.
The transaction is backed by New Mountain Capital, a New York-based private equity firm managing approximately $60 billion in assets under management across private equity, credit, and net lease investment strategies. New Mountain Capital's involvement underscores the growing role of institutional capital in reshaping the professional services landscape, particularly as mid-market accounting firms pursue scale and cross-border capabilities to compete with the "Big Four" accounting firms.
The combined entity will emerge as a top-five U.S. accounting and advisory firm, uniting two established top-ten players. CBIZ currently operates with more than 9,500 team members across 23 major markets nationwide, offering services in accounting, tax, advisory, benefits, insurance, and technology solutions. Grant Thornton Advisors operates as part of a multinational platform spanning nearly 20 aligned firms with approximately 25,000 professionals across the Americas, Europe, Middle East, and Asia-Pacific regions. The merger will consolidate these capabilities, enabling the combined platform to deliver enhanced cross-border solutions and expanded service breadth to mid-market and enterprise clients.
The strategic combination reflects ongoing industry consolidation driven by client demand for integrated, technology-enabled advisory services and the ability to execute on complex, multi-jurisdictional engagements. By leveraging Grant Thornton's international platform and CBIZ's deep U.S. market presence and specialized expertise, the acquisition positions the combined firm to compete more effectively in high-value service categories and geographic markets, while providing institutional investors with exposure to the resilient professional services sector.
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