Simpson Thacher & Bartlett LLP

Simpson Thacher & Bartlett LLP combines regulatory insight with serious litigation firepower across the full spectrum of competition work. The group is led globally by Sara Razi from Washington, DC, whose FTC background underpins the firm’s strength in merger control, investigations, and counseling, alongside John Terzaken, a former DOJ criminal enforcement head also in DC with standout credentials in cartel, fraud, and follow-on litigation. Peter Guryan, operating out of New York, complements this leadership with experience in civil and criminal matters, particularly in high-stakes global transactions. The litigation platform is reinforced by Lynn Neuner and Jonathan Youngwood, both global litigation co-chairs, who bring heavyweight trial and appellate expertise and ensure antitrust matters benefit from the firm’s broader disputes capability, providing additional support from New York. In Washington, DC, Abram Ellis defends clients in class actions and antitrust litigation, particularly in the healthcare sector, but also in industries including food and beverage, chemicals, finance and real estate.