Kathy O'Neill

Partner
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I focus on antitrust and competition law, and I advise our clients on all aspects of government merger review, antitrust investigations, litigation and compliance.

Experience

Carmot Therapeutics Enters Definitive Merger Agreement With Roche

December 3, 2023

Cooley advised Carmot Therapeutics, a clinical-stage biotechnology company dedicated to developing life-changing therapeutics for people living with metabolic diseases including obesity and diabetes, on its definitive merger agreement in which Roche will acquire Carmot.

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Kathy O'Neill is incredibly analytical.

Chambers USA, 2024

Kathy is an outstanding lawyer. She has great judgment.

Chambers USA, 2024

Admissions and credentials

New York

Pennsylvania

District of Columbia

Rankings and accolades

Chambers USA: Antitrust – District of Columbia (2024)

Women@Competition: 40 in their 40s Notable Women Competition Professionals in Europe, the Americas and Africa (2019)

Global Competition Review: Women in Antitrust award (2016)

DOJ Antitrust Division: Assistant Attorney General Award for outstanding contributions to enforcement matters (eight-time winner)