Jacqueline Liu Sesia

Jacqueline Liu Sesia is a senior litigation associate in the Los Angeles office of Gibson Dunn.  Her practice focuses on antitrust & competition litigation, merger clearance, and government investigations as well as leading high-stakes, complex litigation.  She frequently represents clients in the technology, financial services, healthcare, and oil and gas industries and has significant experience advocating for clients before regulators and courts.  Jacqueline has successfully represented clients before regulators resulting in no-action from antitrust enforcers as well as securing dismissals at various stages of litigation: on the pleadings, summary judgment, and trial.   She has also successfully counseled clients through complex discovery issues. 

Representative antitrust matters:

• Represented a leading technology company in high-profile antitrust lawsuit in the Northern District of California in 2024.  Key member of trial team, taking a senior executive through trial and key member of discovery team that handled complex e-discovery.  Currently representing the company in several related cases, including class actions and multi-district litigation.
• Represented a leading pharmaceutical company in an antitrust opt-out case from a high profile multi-district litigation.  Key member of the team, including first-chairing depositions. 
• Represented Pioneer Natural Resources in securing the FTC’s clearance of ExxonMobil’s $64.5 billion acquisition of Pioneer, which created the largest oil and gas producer in the Permian Basin
• Represented Amazon in securing the FTC’s unconditional clearance of Amazon’s acquisition of One Medical
• Represented a US technology company in a DOJ Antitrust Division criminal international leniency application in front of four regulators*
• Represented two industrial executives in a criminal price-fixing investigation by the DOJ, Antitrust Division resulting in no-action*
• Represented a US media company in a criminal bid-rigging investigation by the DOJ, Antitrust Division, resulting in no-action*
• Represented a US executive in a criminal no-poach investigation by the DOJ, Antitrust Division*

Jacqueline also maintains an active pro bono practice, including securing immigration relief for a client on an unprecedented appellate brief before the USCIS Administrative Appeals Office.

Jacqueline earned her law degree in 2018 from the University of Chicago Law School. She received a Bachelor of Arts in Political Science with honors in 2014 from the University of California, Berkeley.  She is a member of the State Bar of California and is admitted to practice before the United States District Court for Northern California.  Jacqueline has counseled clients in multiple jurisdictions, and speaks English and Mandarin.

*Includes matters handled prior to joining Gibson Dunn.

Capabilities

• Antitrust and Competition
• Litigation
• Privacy, Cybersecurity, and Data Innovation
• Tech and Innovation
• White Collar Defense and Investigations

Credentials

Education:

• University of Chicago Law School - 2018 Juris Doctor
• University of California, Berkeley - 2014 Bachelor of Arts

Admissions:

• California Bar