Sidley Austin LLP frequently assists domestic and multinational corporations, trade associations, government entities, and individuals across the full spectrum of civil and criminal antitrust matters. The team operates under the leadership of Benjamin Nagin in New York, whose workload includes high-profile disputes and investigations related to payment systems, AI, and labor agreements. In Washington DC, Carie Mahan serves as an antitrust litigator, counselor, and risk advisor to her diverse client base. The team continues to expand, with Corey Roush joining from Akin in June 2024.
Legal 500 Editorial commentary
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Testimonials
Collated independently by Legal 500 research team.
- 'Sidley has one of the best antitrust teams in the market. While there have been some key changes in the last year or two, the addition of Corey Roush is the reason we worked with Sidley in this capacity most recently on a large transaction. I would call out Laura Collins in particular, and also Jason Semmes, for their excellent work in that transaction.'
Key clients
- PGA Tour
- Olin Corporation
- The Big 12 Conference
- Cantor Fitzgerald
- Stewart Title Guaranty Company
- CONAM Management Corporation
- Citibank
- Citigroup
- Accor Management
- Gucci America
Work highlights
- Represented the PGA Tour in a class action concerning its dispute with the LIV Tour.
- Representing The Big 12 Conference antitrust class action litigations involving student-athlete compensation issues.
- Representing CONAM Management Corporation in a consolidated antitrust MDL.
Lawyers
Practice head
Benjamin Nagin; Ken Daly
Other key lawyers
Carrie Mahan; Corey Roush; Lawrence Silverman; Scott Stein; Steven Horowitz; Mark Hopson; Benjamin Mundel; Jason Semmes; Laura Collins