Accounting and consulting firms J.H. Cohn LLP and Reznick Group PC have combined to form CohnReznick LLP.

The combined firm, headquartered in New York, has 25 offices, 2,000 employees and revenues of $450 million.

J.H. Cohn’s chief executive, Thomas Marino, and Reznick’s chief executive, Kenneth Baggett, will serve as co-chief executives of the firm.