Simpson Thacher & Bartlett LLP

Simpson Thacher & Bartlett LLP’s antitrust and trade regulation practice boasts a robust team of former enforcement attorneys, prosecutors, and trial lawyers from the FTC and DOJ, offering comprehensive support across a wide range of cartel matters. Serving clients in sectors such as software, transportation, defense, and insurance, the team handles internal investigations, leniency applications, criminal and regulatory probes, and dawn raid preparedness. With expertise spanning allegations of price fixing, market allocation, bid rigging, and no-poach conduct, the group is co-led by Peter Guryan in New York and Washington DC-based John Terzaken and Sara Razi. Terzaken, who is praised for his 'level headedness and sound judgment', is a key port of call for corporate and individual clients involved in government enforcement of antitrust, fraud and other white collar violations, while Razi regularly represents clients in antitrust investigations by the DOJ, FTC, and States. Abram Ellis stands out for his work in cartel-related civil litigation, and Jeffrey Knox is highly regarded for representing multinational corporations, independent board committees, and senior executives in investigations by federal and state regulators. Unless otherwise noted, all attorneys are based in Washington DC.