Ian Simmons > O'Melveny & Myers LLP > Washington DC, United States > Lawyer Profile

O'Melveny & Myers LLP
United States
Ian Simmons photo

Work Department

Antitrust & Competition; Financial Technology


Practice Group Leader; Partner


  • University of Pennsylvania, J.D., 1991
  • Yale University, M.A., 1988
  • McGill University, B.A., 1986

Lawyer Rankings

United States > Antitrust > Cartel

O’Melveny & Myers LLP represents clients in civil and criminal cartel proceedings, including high-profile litigation, as well as handling government and regulatory investigations and internal compliance matters. Clients include corporates and executives involved in notable cartel investigations, such as the chicken broiler sector proceedings as well as those into technology and auto parts. The team is led by the Washington DC-based duo Ian Simmons, a successful cartel litigator with involvement in major multi-district and federal cases, alongside Ben Bradshaw. San Francisco’s Michael Tubach specializes in criminal cartel litigation, as well as representing clients in government investigations, while Anna Pletcher, also in San Francisco, is a former federal prosecutor with expertise in a broad range of cartel cases. DC-based counsel Scott Schaeffer has played a key role in several of the firm’s high-profile cartel defense proceedings, and has successfully resolved cartel claims against clients in a broad range of sectors.

United States > Antitrust > Civil litigation/class actions: defense

O’Melveny & Myers LLP focuses its antitrust practice on litigating complex matters including class actions, cartels, and unfair competition. In Washington DC, Ben Bradshaw leads the department together with Ian Simmons, whose expertise spans cartels and cases at the intersection of antitrust with intellectual property. Another name to note in DC is Katrina Robson with experience in the technology, transport, and telecom sectors, among others. New York-based antitrust litigation specialist Andrew Frackman and Stephen McIntyre, who was promoted to partner in January 2021, represent clients in antitrust matters from the firm’s New York and Los Angeles hubs, respectively. In February 2021, Julia Schiller returned to the DC group after having spent three years as counsel to the Assistant Attorney General of the DOJ’s Antitrust Division.