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Guy Singer
Lawyers profile
USA 2026
Lawyers profile | USA 2026: FCPA, Litigation: White-Collar Crime & Government Investigations
Guy Singer
Ranked in 3 Practice Areas
2

Band 2

FCPA

USA - Nationwide

10 Years Ranked

4

Band 4

Litigation: White-Collar Crime & Government Investigations

District of Columbia

4 Years Ranked

5

Band 5

Litigation: White-Collar Crime & Government Investigations

New York

2 Years Ranked

Ranked in Guides
Global 2026

About

Provided by Guy Singer

USA

Practice Areas

A former federal prosecutor and distinguished trial lawyer, Guy centers his practice on complex white collar criminal defense, regulatory enforcement and compliance matters, and internal investigations. He advises clients across a broad range of industries, including healthcare, life sciences, energy, technology, and maritime.

As a trial lawyer in the fraud section of the U.S. Department of Justice (DOJ) Criminal Division, Guy investigated and prosecuted all forms of white collar crime and public corruption throughout the United States. Drawing on his extensive experience, he advises clients on their most high-stakes white collar fraud matters and routinely represents companies and individuals in both internal and government-led investigations, including matters involving the Foreign Corrupt Practices Act (FCPA), earnings management investigations, scientific fraud allegations, and other types of alleged corporate misconduct. Guy has appeared before numerous federal agencies, among them the DOJ, the U.S. Securities and Exchange Commission (SEC), and other state agencies and attorneys general. ple/guy-singer/

Chambers Review

Provided by Chambers

Chambers Guide to the USA

FCPA - USA - Nationwide

2
Band 2
Individual Editorial
Guy Singer maintains a broad practice encompassing corporate monitorship roles, compliance programs and criminal investigations.
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Litigation: White-Collar Crime & Government Investigations - District of Columbia

4
Band 4
Individual Editorial

Guy Singer of Winston & Strawn has notable experience in white-collar crime, regulatory and compliance matters, as well as internal investigations. He represents clients across a broad range of industries including healthcare and life sciences.

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Litigation: White-Collar Crime & Government Investigations - New York

5
Band 5
Individual Editorial

Guy Singer is noted for his expertise in complex white-collar criminal defense, regulatory enforcement, compliance matters, and internal investigations across various industries, including healthcare, life sciences, oil and gas and technology. He is able to drawn on his experience as a former federal prosecutor with the US Department of Justice's Fraud Section.

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Strengths

Provided by Chambers

Guy is an extremely responsive lawyer. He does a good job of understanding his clients, which makes him effective at all levels.

FCPA respondent
Chambers Guide to the USA

Guy shows excellent judgment. He is a reliable and trusted adviser.

FCPA respondent
Chambers Guide to the USA

Guy is a very seasoned lawyer. He has seen and done it all – a very safe pair of hands.

FCPA respondent
Chambers Guide to the USA

Guy brings the added experience of being a former DOJ prosecutor. He understands what we are trying to achieve and works to create a workable plan.

FCPA respondent
Chambers Guide to the USA

What sets Guy apart is his ability to translate enforcement-side experience into practical, risk-calibrated advice. He finds the right balance and communicates it clearly to both legal teams and business leadership.

FCPA respondent
Chambers Guide to the USA

Guy brings outstanding judgment and is a valued advisor on thorny questions.

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

Guy is outstanding and a true class act in all he does.

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

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