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Global Leader

Competition 2019

Professional Biography

WWL Ranking: Recommended

WWL says

Jessica Delbaum “has encyclopaedic knowledge of her practice area” applaud sources who add, “She always makes sure she understands the business goals related to the transaction.”


Jessica Delbaum is partner in Shearman & Sterling's antitrust practice. Her practice focuses on defending multinational companies’ mergers and acquisitions before the Federal Trade Commission and Department of Justice, as well as coordinating the multijurisdictional antitrust defence 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 in the health care, agriculture, technology, chemicals, retail and finance sectors.

Prior to joining Shearman & Sterling, Ms Delbaum was an attorney general’s honours programme 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.

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