LAWYER PROFILE
Jeremy Calsyn

Jeremy Calsyn

USA 2026

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Ranked in 2 practice areas

About

Provided by Cleary Gottlieb Steen & Hamilton LLP

Practice Areas

Jeremy Calsyn’s practice focuses on the full range of antitrust matters. Jeremy has represented clients in their most high-profile and sophisticated matters, including mergers and acquisitions requiring regulatory approval in dozens of jurisdictions, numerous global and U.S.-focused cartel investigations, and in litigation in federal, state and administrative courts. He was co-lead trial counsel to Juul Labs in defeating the FTC’s challenge of Altria’s investment in Juul Labs. He is counsel to Pinnacle in the RealPage class action litigation, is handling numerous merger investigations, and is representing clients in several confidential cartel investigations.

Career

Joined Cleary in 1999; became partner in 2008; J.D., magna cum laude, Georgetown University Law Center (1999); B.S., summa cum laude, Southwest Missouri State University (1995); Law clerk, Judge Louis F. Oberdorfer of the U.S. District Court for the District of Columbia (2000-2001).

Professional Memberships

Member, California and District of Columbia Bars.

Chambers Review

Provided by Chambers

Chambers Guide to the USA

Antitrust: Cartel - USA - Nationwide

Band 2
Band 2

Individual Editorial
Jeremy Calsyn is accomplished in criminal antitrust litigation, particularly cases concerning price-fixing investigations. He is well known for his work on behalf of automotive parts suppliers.

Antitrust - District of Columbia

Band 3
Band 3

Individual Editorial

Jeremy Calsyn is well known in the market for his representation of multinational companies in antitrust litigation and merger proceedings. He is particularly expert in defense of price-fixing allegations.

Strengths

Provided by Chambers

  • Jeremy is incredibly responsive and commercial. He understands that we are looking for a path forward and helps us understand our options.

    Antitrust: CartelChambers Guide to the USA
  • Jeremy is very practical, efficient and strategic. He gets great results.

    Antitrust: CartelChambers Guide to the USA
  • Jeremy is incredibly smart and practical. He is willing to take positions and stand behind them. He knows the law and agencies.

    Antitrust: CartelChambers Guide to the USA
  • Jeremy is really someone who can do it all.

    Antitrust: CartelChambers Guide to the USA
  • Jeremy is very practical, efficient and strategic. He gets great results.

    AntitrustChambers Guide to the USA
  • Jeremy is incredibly responsive and commercial. He understands that we are looking for a path forward and helps us understand our options.

    AntitrustChambers Guide to the USA

Ranked Individuals at Cleary Gottlieb Steen & Hamilton LLP (119)

California

California: Northern

California: San Francisco, Silicon Valley & Surrou

District of Columbia

New York

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