Grant Thornton to acquire CBIZ for $5B
Grant Thornton will acquire CBIZ in an all-cash $5 billion deal expected to close in Q4. Grant Thornton expects to have over $5B domestic and $7.5B global revenue and 34,500+ employees. CBIZ shareholders will receive $55 per share, about a 54% premium; CBIZ stock will delist. The CBIZ board approved the deal.
How this was made

The 30-second read
Why it matters
For CBIZ, the key tradable inputs are the $55 all-cash price, the ~54% premium to 30-day VWAP, unanimous board approval, and the go-shop window until Aug. 27, all of which shape deal-spread and closing-probability expectations.
Market read
This is a primary M&A disclosure with explicit per-share cash consideration, premium, board approval, and a defined go-shop period, making it actionable for deal-spread and closing-risk trading.
What to watch
Execution risk around separating CBIZ’s benefits and insurance segment into a new independent company could affect perceived deal complexity and timing.
Background
CBIZ is described as the only publicly traded accounting firm, while Grant Thornton is backed by New Mountain Capital and has been expanding its multiplatform footprint.
Market effects
Signals continued private-equity consolidation in public accounting, with emphasis on AI capabilities and multinational expansion.
Primarily US-focused revenue expansion, with stated global revenue growth and multinational platform scaling.
Moderate, as the deal is framed around expanding multinational reach and industry specialization rather than cross-border regulatory changes.
Counterpoint
The go-shop provision means a superior proposal could emerge, so the premium may not fully de-risk the spread until closing certainty improves.
Key entities
- public companyCBIZ
Only publicly traded accounting firm in the article, being acquired for $55 per share in an all-cash deal.
- acquirerGrant Thornton
Private accounting firm acquiring CBIZ, backed by New Mountain Capital, targeting Q4 closing.
- private equity investorNew Mountain Capital
Backs the transaction and is cited as supporting AI capability enhancement and platform growth.

