Mr John Terzaken > Simpson Thacher & Bartlett LLP > Washington DC, United States > Lawyer Profile

Simpson Thacher & Bartlett LLP‘s highly active practice represents clients on multiple major new and ongoing cartel matters, leveraging the deep in-house experience of the team to represent clients in international and domestic investigations and subsequent litigation. Internal investigations, leniency applications, and multijurisdictional compliance programs are particular strengths of the group. The practice is jointly overseen by Washington DC-based John Terzaken, DC’s Sara Razi, as well as Peter Guryan in the New York office. Terzaken, the former director of criminal enforcement at the DOJ’s Antitrust Division and a leading name in the field, concentrates on market sector investigations and litigations across all major industries with an emphasis on financial services and fintech. Razi is a former senior official at the FTC, while Guryan formerly served as a trial attorney in the Antitrust Division. Jeffrey Knox, also based in DC, advises multinational corporations and independent board committees in high-stakes investigations by the DOJ, SEC, CFTC, and other federal and state enforcement regulators. Another key DC name is Abram Ellis, who regularly acts on follow-on cartel litigation.

Simpson Thacher & Bartlett LLP is known for advising and representing both plaintiffs and defendants in antitrust litigation concerning monopolization, price fixing and tying claims across major industries such as chemicals, insurance, pharma, agricultural products, finance, and telecoms. The team is led by antitrust co-chair Sara Razi who has extensive private-sector and government antitrust experience, fellow co-chair John Terzaken, a leading antitrust litigator with a broad antitrust practice including investigations and follow-on litigation and litigation co-chair Jonathan Youngwood in New York, who co-chairs the litigation department. Other heads of team include New York-based antitrust co-chair Peter Guryan and litigation co-chair Lynn Neuner. Abram Ellis is highly regarded in the market and is especially experienced in antitrust litigation involving financial instruments, the healthcare industry and employment matters. All attorneys are based in Washington DC unless otherwise specified.