CBIZ set to go private in $5bn Grant Thornton deal

Grant Thornton's $5bn all-cash takeover of CBIZ signals a wave of private-equity-backed consolidation reshaping mid-market professional services.

By Disrupts Editorial Team Wed, 21 October 2026 AI level 2 of 5

AI level 2 of 5: drafted by our AI editorial assistant from the company's announcement; fact-checked, edited and signed off by Mark Walker, Editorial Director. What the levels mean

A brightly lit modern office features a foreground desk with four monitors displaying blue and teal abstract network patterns and line graphs, with identical workstations arranged in receding rows.

CBIZ, the Cleveland-based professional services group listed on the New York Stock Exchange, is on the cusp of exiting the public markets after agreeing to a $5bn all-cash acquisition by Grant Thornton, itself backed by private equity firm New Mountain Capital. The deal, at $55.00 per share, is expected to close in Q4 2026, pending shareholder and regulatory sign-off. Once completed, CBIZ will delist from the NYSE and become a private company, removing one of the more substantial mid-market accounting and advisory platforms from the quoted universe.

Third-quarter results published alongside the announcement showed the business in reasonable operational health. Revenue reached $702m in the three months to 30 September 2026, up 1.2% year-on-year, with net income rising sharply to $47m, a 56.7% increase. Adjusted EBITDA came in at $132m, up 6.3%, and adjusted diluted earnings per share grew 14.2% to $1.21. For the nine months to end-September, revenue was $2.23bn, up 0.8%, while free cash flow surged by $91m, reaching $125m. The company has declined to issue full-year guidance, citing the pending transaction.

The private-equity playbook in professional services

The Grant Thornton-CBIZ combination is not an isolated event. It reflects a broader private equity thesis: that large, fragmented professional services networks, spanning accounting, tax, benefits, and insurance advisory, can generate durable cash flows that support leveraged buyout structures, while also offering a consolidation runway through bolt-on acquisitions. New Mountain Capital's involvement is consistent with PE's appetite for businesses that have already done much of the integration heavy lifting. CBIZ spent the past two years absorbing Marcum LLP's non-attest business in a major transaction that expanded its headcount to more than 9,500 across 23 markets. That deal generated significant one-off costs, visible in the nine-month adjusted EBITDA figure of $479m, which was down 1.2% year-on-year, even as GAAP net income rose. The Marcum integration costs have weighed on the adjusted numbers while boosting the underlying asset base that Grant Thornton is acquiring.

Grant Thornton, ranked among the larger US audit and advisory networks, gains immediate scale and geographic density in middle-market advisory at the moment when that segment is under the most pressure from technology-enabled disruption. Automation of compliance and tax workflows, the proliferation of AI-assisted audit tools, and the emergence of cloud-native accounting platforms are compressing margins and forcing mid-tier firms to either grow or be absorbed.

Convergence pressures reshaping advisory markets

The broader significance for cross-sector investors lies in what the transaction reveals about professional services as an asset class. Mid-market accounting and advisory firms sit at the intersection of the fintech wave and the enterprise-software revolution. The digitisation of tax, payroll, and benefits administration is turning what were once labour-intensive service lines into platform businesses. A combined Grant Thornton and CBIZ entity, operating under private ownership and away from quarterly earnings scrutiny, would be better positioned to invest in technology transformation without the pressure of managing short-term EPS expectations.

For sovereign wealth and institutional investors tracking the consolidation of back-office and professional-infrastructure businesses, this deal is a data point in a larger pattern: private capital is systematically taking advisory and compliance-heavy businesses private to rebuild them around technology platforms before any potential re-listing. The question for capital allocators watching the space is whether the Grant Thornton-CBIZ combination signals an acceleration of similar plays among the remaining mid-tier accounting networks, and whether the regulatory appetite for further concentration in audit markets, which remains a live concern for the SEC and the Public Company Accounting Oversight Board, will ultimately constrain the strategy.

The transaction is subject to customary closing conditions and CBIZ shareholder approval. No revised financial guidance will be issued prior to completion.