
Derivatives: Mainly Regulatory
Global Guide 2026 : USA
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Ranked Individuals
Ranked Individuals
About
Provided by Sullivan & Cromwell LLP
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Work Highlights
Provided by Chambers
Sullivan & Cromwell LLP represented Uniswap in a CFTC inquiry involving whether it lists CFTC jurisdictional products and makes them available to US persons, in violation of CFTC rules.
Strengths
Provided by Chambers
Sullivan & Cromwell is the 800lb gorilla and represents all the major players.
Derivatives: Mainly Regulatory respondentGlobalThe team is extremely knowledgeable and have many excellent attorneys.
Derivatives: Mainly Regulatory respondentGlobal
Notable Practitioners
Provided by Chambers
Senior Statespeople 
Senior Statespeople 
Kenneth M Raisler
Kenneth Raisler has long been highly regarded for his regulatory practice and he is especially recommended for his expertise in matters involving the CFTC. Band 1 
Band 1 
Colin Lloyd
Colin Lloyd has a flourishing regulatory practice, regularly advising on matters impacting both the US and international jurisdictions. Colin is the best regulatory lawyer focused on derivatives for sure. His subject matter knowledge is the best and he has an ear to the ground for what is going on.
Derivatives: Mainly Regulatory respondentGlobal
Band 1 
Band 1 
David J Gilberg
David Gilberg has an impressive practice which sees him frequently advise on regulatory matters, including on the rules surrounding digital assets. Band 1 
Band 1 
James McDonald
James McDonald brings a wealth of experience in enforcement and is regularly seen representing clients in regulatory and compliance investigations related to their trading activities. He is super smart, insightful, thoughtful and strategic in his approach. He has become one of our go-to people, particularly for matters opposite the CFTC.
Derivatives: Mainly Regulatory respondentGlobalHe's one of the top lawyers at Sullivan on the enforcement side.
Derivatives: Mainly Regulatory respondentGlobalHe knows what regulators think and what they want. He also appreciates the internal pressures we face. His level headedness and experience have proven very helpful.
Derivatives: Mainly Regulatory respondentGlobal
Band 1 
Band 1 
Kathleen S. McArthur
Kathleen McArthur's regulatory, enforcement and investigations expertise make her well placed to handle cases involving market manipulation. Kathleen has got a good way of handling matters, she can cut to the chase.
Derivatives: Mainly Regulatory respondentGlobalKathleen is brilliant and her advice is client-friendly, pragmatic, sensible and I feel like I am in a safe pair of hands in a scary jurisdiction. She is excellent; I can't find fault at all.
Derivatives: Mainly Regulatory respondentGlobalKathleen has a great strategy, knows the law and is well spoken. She is one of the best that is out there.
Derivatives: Mainly Regulatory respondentGlobalKathleen has an encyclopedic knowledge of the complex regulations. When it comes to handling inquiries from the enforcement divisions of these two regulators, I think she is the best in the business.
Derivatives: Mainly Regulatory respondentGlobalShe does a great job identifying the central issues within the investigation and addressing them with the regulators in a way that clarifies complex issues.
Derivatives: Mainly Regulatory respondentGlobal
Band 1 
Band 1 
Rebecca J Simmons
Rebecca Simmons' broad regulatory knowledge makes her a popular choice for trading associations and financial services firms.
Ranked Individuals at Sullivan & Cromwell LLP (12)
Members
Provided by Sullivan & Cromwell LLP

Colin Lloyd
View profile of Colin Lloyd
David J Gilberg
View profile of David J Gilberg
Rebecca J Simmons
View profile of Rebecca J Simmons
Kathleen S. McArthur
View profile of Kathleen S. McArthur
James McDonald
View profile of James McDonald
Kenneth M Raisler
View profile of Kenneth M Raisler
Sullivan & Cromwell LLP has rankings in the following guides
Band 1
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