LAWYER PROFILE
Ian Simmons

Ian Simmons

USA 2026

Chambers ranking badge
Share profile
Chambers ranking badge
O'Melveny & Myers LLP
 O'Melveny & Myers LLP

Ranked in 2 practice areas

Antitrust: Litigation Specialists

District of Columbia

8 years ranked

Antitrust: Cartel

USA - Nationwide

2 years ranked

Chambers Review

Provided by Chambers

Chambers Guide to the USA

Antitrust: Litigation Specialists - District of Columbia

Band 3
Individual Editorial

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.

View ranking table

Antitrust: Cartel - USA - Nationwide

Band 3
Individual Editorial

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.

Learn more about this teamView ranking table

Strengths

Provided by Chambers

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

    Antitrust: Litigation SpecialistsChambers Guide to the USA

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

    Antitrust: Litigation SpecialistsChambers Guide to the USA

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

    Antitrust: CartelChambers Guide to the USA

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

    Antitrust: CartelChambers Guide to the USA

Ranked Individuals at O'Melveny & Myers LLP (123)

California

What success is built on

Chambers is the leading data and intelligence partner for the legal sector.

Explore thought leadership