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Band 1 firm for Corporate Investigations/Anti-Corruption – Global-wide

Band 1 firm in the U.S. for Corporate Crime & Investigations and Investigations & Enforcement (International & Cross-Border).

—Chambers Global, 2025

Band 1 firm for Corporate Crime and Investigations – Nationwide.

Band 1 firm for White-Collar Crime & Government Investigations in New York.

Band 1 firm for Securities: Regulation: Enforcement – Nationwide.

Band 1 firm for FCPA – Nationwide.

Leading firm for White Collar Crime & Government Investigations in District of Columbia.

Leading firm for White Collar Crime & Government Investigations in California.

—Chambers USA, 2025

First tier firm in Corporate Investigations and White-Collar Criminal Defense: Advice to Corporates.

Leading firm in Corporate Investigations and White-Collar Criminal Defense: Advice to Individuals.

—The Legal 500 US, 2025

Ranked as a top-tier firm for Regulatory Investigations and Corporate Crime.

—The Legal 500 UK, 2025

Ranked as a leading firm for Financial Crime: Corporates.

—Chambers UK, 2025

Criminal Litigation Law Firm of the Year

—Chambers USA Awards, 2024

Most Impressive Investigations Practice of the Year

—Global Investigations Review, 2023

Named “Firm of the Year” in the Business Crime Defense category

—Who’s Who Legal, 2023 & 2024

White Collar Crime/Enforcement/Investigations Firm of the Year

—Benchmark Litigation U.S. Awards 2018, 2019, 2020, and 2022

White Collar Practice Group of the Year

—Law360, 2021

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White collar & regulatory defense counsel Nicholas Folly, and partners Josh Cohen and David Sarratt contributed a chapter to Global Investigation Review’s The Practitioner’s Guide to Global Investigations, entitled “Beginning an internal investigation: the US perspective.”

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On October 3, 2025, the U.S. Court of Appeals for the Sixth Circuit held the attorney-client privilege and work‐product doctrine applicable to a company’s internal investigation conducted by outside counsel. Read our update here.

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Debevoise regularly represents boards of directors, board committees and corporations in conducting internal investigations into alleged wrongdoing and in responding to the results of such investigations. Debevoise’s team includes a formidable bench of seasoned investigations lawyers, with deep experience and expertise, who are well respected for their credibility, judgment and practicality. The team conducts investigations with full appreciation of the wider regulatory and enforcement context – anticipating and responding to the risks posed in today’s increasingly regulated market – particularly in circumstances of parallel government investigations.Debevoise advises clients on their most sensitive and highly charged investigations, including headline-generating issues with potentially global reach, such as #MeToo-related issues, as well as smaller investigative matters that remain confidential. Debevoise’s investigations practice is particularly adept at creating tailored teams for tasks at hand, scaling its approach to match the size of any challenge and adjusting as an investigation progresses. Debevoise delivers advice in a commercial context, troubleshooting where necessary, and assisting clients to avoid future issues through appropriate remediation, including the development and implementation of risk-based compliance procedures.Debevoise’s practice features a truly global team, with unparalleled strength across the U.S., Europe and Asia. This global platform is especially valuable to clients given the often multijurisdictional nature of the most vexing investigative matters.

Internal Investigations

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