Grant Thornton Advisors announced Wednesday it has entered into a definitive agreement to acquire CBIZ (NYSE: CBZ), a professional services firm listed on the New York Stock Exchange, in an all-cash transaction with an enterprise value of $5 billion. Under the terms of the deal, CBIZ shareholders will receive $55.00 per share, representing a 54% premium to the company’s 30-day volume-weighted average price and roughly an 18% premium to CBIZ’s most recent closing price. The transaction is described as the largest of its kind in more than 25 years.
The deal is backed by New Mountain Capital, which previously led a May 2024 investment in Grant Thornton Advisors and has now committed $5.2 billion in financing to support this acquisition as well. CBIZ’s board unanimously approved the transaction and is recommending shareholders vote in favor of it. Closing is targeted for the fourth quarter of 2026, subject to shareholder and regulatory approval.
A Genuine Industry Heavyweight
The combination reshapes the upper tier of the professional services industry. CBIZ currently ranks No. 8 on Accounting Today’s 2026 Top 100 Firms list with $2.8 billion in revenue, while Grant Thornton sits at No. 9 with $2.5 billion. Once combined, the merged firm is expected to become the fifth-largest professional services provider in the United States, generating more than $5 billion in domestic revenue and nearly $7.5 billion globally, operating across more than 20 countries with a workforce exceeding 34,500 professionals.
CBIZ President and CEO Jerry Grisko called it a historic combination with a strong cultural and strategic fit, framing the deal as one that creates new opportunity for employees while delivering significant value to shareholders.
What the Deal Is Actually Built Around
The stated strategic rationale centers on three areas: expanding Grant Thornton’s AI-enabled service delivery capabilities, growing its multinational footprint, and deepening industry specialization across both firms’ combined client base. As part of the restructuring, CBIZ’s Benefits and Insurance Services segment will be spun off as an independent, growth-oriented company, a signal that the combined entity intends to sharpen its focus on core advisory, tax, and accounting services rather than retain every existing business line.
The deal includes a go-shop period running through August 27, 2026, during which CBIZ may solicit superior competing proposals, alongside standard no-shop and termination provisions once that window closes. CBIZ’s board also adopted change-in-control severance, retention, and transaction bonus programs the same day the deal was announced, a customary step designed to retain key personnel through the transition.
The Numbers Behind the Timing
The announcement landed alongside CBIZ’s own second quarter results. For the first half of 2026, the company reported revenue of $1.53 billion, up modestly year over year, with net income rising 4.1% to $171.4 million and adjusted diluted earnings per share increasing 3.6% to $3.44. CBIZ also repurchased approximately 2.5 million shares for roughly $70 million during the period, while reducing net leverage to 3.4 times, down from the prior year.
Why This Matters Beyond Accounting
For investors tracking consolidation trends across professional and business services, this deal reinforces a pattern playing out broadly this year. Private equity-backed platforms are aggressively pursuing scale in fragmented service industries, betting that combining AI capability, specialized talent, and multinational reach creates durable competitive advantages that smaller, standalone firms increasingly struggle to match on their own.
