Back to rankings
Jessica Delbaum

Jessica Delbaum

More information
A&O Shearman

A&O Shearman

United States • Antitrust

1

Merger control

With antitrust expertise across Dallas, New York, San Francisco, Silicon Valley and Washington DC, the A&O Shearman merger control offering regularly handles complex, strategic transactions. The team’s international reach is particularly notable. David Higbee heads the global antitrust practice, with notable government experience and industry expertise across the defense, oil and gas, financial services, and technology sectors. The firm’s merger control offering is complemented by its antitrust litigation practice, headed by Todd Stenerson. For multi-national mergers, companies seek out Jessica Delbaum in New York, noted for her experience before the FTC and Department of Justice. Also in New York, Elaine Johnston  has longstanding experience of matters in the chemicals, pharma, and healthcare industries. The intersection of antitrust law and intellectual property is an area of interest for Noah Brumfield, who splits his time between DC and Silicon Valley. Puja Patel departed the team in January 2025. Team members are based in Washington DC unless otherwise stated.
Legal 500 Editorial commentary
Phone
+1 212 848 4815
Email
[email protected]
Profile
shearman.com
Social

Profile

Work Department
Antitrust
Position

Partner

Career

Jessica focuses on defending multi-national companies’ mergers and acquisitions before the Federal Trade Commission and the Department of Justice as well as coordinating the multi-jurisdictional antitrust defense of transactions. She 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.

Jessica has also defended substantive merger investigations involving a wide variety of industries, including agriculture, pharmaceuticals, medical devices, biotechnology, media, aviation, technology, chemicals and finance.

After graduating from law school, Jessica was an Attorney General’s Honors Program Attorney in the Antitrust Division of the Department of Justice. While at the Division, she 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.

Jessica is a Chambers-ranked practitioner, and her practice has also been recognized by various other publications including Legal 500. In 2021, Jessica was named to The BTI Consulting Group’s Client All-Stars List, a rare client-designated honor for excellence in client service as reflected in a survey of corporate America’s top decision makers.

Jessica is a regular speaker on a variety of antitrust-related topics.

Content supplied by A&O Shearman

Key clients

  • Paramount Global (formerly known as ViacomCBS) Dover Corporation Carbon Engineering Chevron Atrion Corporation Genmab A/S Chesapeake Utilities Corporation JetBlue Airways Corporation JDE Peet's N.V. Davide Campari–Milano N.V. SAP SE WillScot Mobile Mini Corp. RHI Magnesita N.V. Strategic Sports Group OCI N.V. Broadway Technology Fairfax Financial Holdings Limited

Work highlights

Advised SAP SE on the acquisition of LeanIX.
Advised Chevron Corp. on competition matters in its definitive agreement to acquire Hess Corp. in an all-stock transaction valued at $53 billion on October 20, 2023.
Represented JetBlue Airways Corporation in an investigation and then trial brought by the DOJ and several states seeking to enjoin the Northeast Alliance between JetBlue and American Airlines.