Jessica Delbaum is a partner in Shearman & Sterling’s Antitrust Group. Her practice focuses on defending multinational companies’ mergers and acquisitions before the Federal Trade Commission and Department of Justice as well as coordinating the multi-jurisdictional antitrust defense of transactions. Ms. Delbaum also counsels clients on an extensive array of antitrust issues such as competitor collaborations, cartel leniency applications, and Hart-Scott-Rodino Act compliance, including integration planning. Ms. Delbaum has defended substantive merger investigations involving a wide variety of industries, including health care, industrial gases, mining and finance. Prior to joining Shearman & Sterling, Ms. Delbaum was an Attorney General’s Honors Program Attorney in the Antitrust Division of the Department of Justice. While at the Division, Ms. Delbaum investigated possible violations of the antitrust laws involving mergers and acquisitions, the reporting and waiting requirements of the Hart-Scott-Rodino Act and civil price-fixing.