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Jeffrey Knox
Lawyers profile
USA 2026
Lawyers profile | USA 2026: FCPA, Litigation: White-Collar Crime & Government Investigations
Jeffrey Knox
Ranked in 2 Practice Areas
1

Band 1

FCPA

USA - Nationwide

8 Years Ranked

2

Band 2

Litigation: White-Collar Crime & Government Investigations

District of Columbia

8 Years Ranked

Ranked in Guides
Global 2026

About

Provided by Jeffrey Knox

USA

Practice Areas

Jeff Knox, former head of the U.S. DOJ Fraud Section, is Co-Managing Partner of Simpson Thacher’s Washington, D.C. office and Global Co-Head of the Firm’s Government and Internal Investigations Practice. He represents multinational corporations and independent board committees in high-stakes investigations by the DOJ, SEC, State Attorneys General, and other federal and state enforcement regulators. He has advised some of the world’s leading companies in the financial services, private equity, energy, life sciences, technology and cryptocurrency industries in navigating criminal and civil investigations relating to the to the federal securities and commodities laws, anti-corruption and anti-money laundering statutes, the False Claims Act, antitrust laws, and economic sanctions and other trade control regulations. Jeff also represents senior executives and government officials who are subjects of enforcement investigations. Jeff represents companies subject to government and court-mandated monitorships, and has served as a government-appointed independent compliance consultant. Prior to joining the Firm, Jeff served as a federal prosecutor for more than a decade including as the Chief of the DOJ’s Fraud Section in Washington, D.C., and before then, as the Chief of the National Security Section of the U.S. Attorney’s Office for the Eastern District of New York.

Career

Simpson Thacher (1999-2003; 2014-present); Department of Justice (2003-2014)

Personal

J.D., cum laude, Northwestern University School of Law; B.S., magna cum laude, University of Arizona

Chambers Review

Provided by Chambers

Chambers Guide to the USA

FCPA - USA - Nationwide

1
Band 1
Individual Editorial

Jeffrey Knox is the global co-head of Simpson Thacher's government and internal investigations practice. He is recognized for his impressive FCPA expertise, with recent standout mandates for global financial institutions and energy companies among other corporates, as well as individual executives.

Learn more about this team❖View ranking table

Litigation: White-Collar Crime & Government Investigations - District of Columbia

2
Band 2
Individual Editorial

Jeffrey Knox of Simpson Thacher & Bartlett LLP is called upon by public and private companies, as well as individuals, facing regulatory proceedings and investigations, with a client base including financial services, pharmaceutical and technology companies.

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Strengths

Provided by Chambers

Jeff brings a broad international experience, solving complex cases with innovative and professional solutions.

FCPA respondent
Chambers Guide to the USA

Jeff is a strong FCPA lawyer who has a lot of experience from his time in government and private practice.

FCPA respondent
Chambers Guide to the USA

Jeff is an excellent attorney and a strong practitioner.

FCPA respondent
Chambers Guide to the USA

Jeff is articulate and strategic. He is appropriately aggressive yet well rounded. His flexible thinking allows him to provide sound strategic advice on a wide range of subject matter.

FCPA respondent
Chambers Guide to the USA

Jeff is both thoughtful and smart. He brings a tremendous amount of experience and credibility.

FCPA respondent
Chambers Guide to the USA

Jeffrey is incredibly versatile. He is equally adept at representing high powered execs and the largest companies in the world.

Litigation: White-Collar Crime & Government Investigations respondent
Chambers Guide to the USA

Jeffrey is a strategic thinker, appropriately aggressive and someone who is super well rounded.

Litigation: White-Collar Crime & Government Investigations respondent
Chambers Guide to the USA

He has broad international experience of solving complex cases with innovative solutions.

Litigation: White-Collar Crime & Government Investigations respondent
Chambers Guide to the USA

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