Department profile
O'Melveny & Myers LLP

Antitrust: Cartel

USA Guide 2026 : USA - Nationwide


O'Melveny & Myers LLP

Rankings

About

Provided by O'Melveny & Myers LLP

Consistently ranked among the top global antitrust practices, we bring credibility and teamwork to everything we do, from precedent-setting courtroom victories to deft handling of merger reviews by agencies around the world.

Our litigation abilities range from extricating clients early and efficiently to achieving . And when it comes to shepherding transactions through global clearance processes, we are practice leaders. We routinely handle complex international mergers and obtain clearance in challenging situations.

We have a reputation for sophisticated, practical antitrust strategy that couples cutting-edge economic and doctrinal analyses with an adept reading of the regulatory and political environment, even under the tightest timeframes. And we are one of the few firms whose partners have tried—and won—cases for and against, the government.

With a team that includes veterans of the US Department of Justice’s Antitrust Division and the Federal Trade Commission, we offer clients an insider’s perspective, bolstered by our close partnerships with renowned economists and consultants.

Chambers Review

Provided by Chambers

Antitrust: Cartel - USA - Nationwide

Band 2

Band 2


What the Team is Known For

O'Melveny & Myers LLP has a sophisticated practice that combines cartel defense, criminal expertise and civil litigation expertise with a highly capable transactional antitrust offering. It is able to tap into global resources to advise on cross-jurisdictional competition matters for important clients. The firm is equally capable of representing both defendants and plaintiffs in complex litigation, and maintains client relationships in a range of sectors including airlines, financial services and natural resources.

Work Highlights

Provided by Chambers

  • O'Melveny & Myers represented Alaska Airlines in obtaining clearance from the Department of Justice after a second request investigation for Alaska Airlines' acquisition of Hawaiian Airlines.

Strengths

Provided by Chambers

  • O'Melveny & Myers are very practical and knowledgeable. They give business-oriented and straightforward advice. They have significant experience and expertise and regularly interact with the agencies to assist clients.

    Antitrust: Cartel respondentUSA
  • O'Melveny are subject matter experts on a wide array of issues and a go-to law firm for all complex and sophisticated matters. They relay complex concepts in an easily digestible manner and produce excellent work product.

    Antitrust: Cartel respondentUSA
  • O'Melveny & Myers have a strong understanding of the challenges and good insight on the market. They are always available, prepared and provided strategy throughout.

    Antitrust: Cartel respondentUSA
  • The team at O'Melveny have very good case analysis and provide strong arguments. They look at things from a business perspective and provide solid legal advice.

    Antitrust: Cartel respondentUSA
  • The team at O'Melveny & Myers bring a wealth of knowledge to our work; they are extremely thorough and trustworthy.

    Antitrust: Cartel respondentUSA

Notable Practitioners

Provided by Chambers

  • Band 1Michael Tubach
    Band 1Michael Tubach

    Michael Tubach

    Michael Tubach regularly acts in investigations relating to price manipulation and competition suppression.
    • Michael is extremely intelligent and has good business acumen.

      Antitrust: Cartel respondentUSA
    • Michael is purpose-driven and extremely knowledgeable in his craft.

      Antitrust: Cartel respondentUSA
    • Michael is extremely knowledgeable and does an excellent job. He is also a real trial lawyer, which is very helpful.

      Antitrust: Cartel respondentUSA
  • Band 3Ian Simmons
    Band 3Ian Simmons

    Ian Simmons

    Ian Simmons co-chairs the antitrust practice at the firm. He is a trial lawyer noted for his decades of experience litigating in the space. He has notable expertise in price-fixing cases and also handles governmental investigations.

    • Ian is phenomenal with the subject matter, and he leads the way in understanding tricky and very difficult areas.

      Antitrust: Cartel respondentUSA
    • Ian is a very strong advocate and master of antitrust law. He deploys his experience well in his strategy.

      Antitrust: Cartel respondentUSA

Ranked Individuals at O'Melveny & Myers LLP (2)

USA - Nationwide

Members

Provided by O'Melveny & Myers LLP

O'Melveny & Myers LLP has rankings in the following guides

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