White Collar Defense, Regulatory and Investigations
Our lawyers handle sensitive internal and governmental investigations, regulatory proceedings, and related litigation for global public companies, financial institutions, boards, special committees, directors and senior executives, and develop comprehensive compliance programs to help our clients avoid unanticipated scrutiny and manage risk.
Notable Representations, Key Contacts
Weil’s global White Collar Defense, Regulatory and Investigations practice includes a number of former federal prosecutors and senior Department of Justice officials. While in government service, lawyers in our practice led the oversight of a wide range of investigations, including more than 50 DOJ prosecutions of FCPA matters and more than 60 prosecutions of insider trading matters, among others. We draw on this impressive substantive and case management experience to provide clients with effective, efficient, and discrete counsel.
We partner with clients to address and mitigate risks associated with a broad range of substantive issues and areas of the law, including:
- Securities Fraud
- Accounting issues
- Financial disclosures
- The Foreign Corrupt Practices Act
- Antitrust and Competition law issues
- Healthcare Fraud
- Tax Fraud
- Insider Trading
- Environmental regulations
- Qui tam/whistleblower complaints
- The False Claims Act
- Anti-Money Laundering and other economic crimes
In addition, working closely with lawyers across the Firm, we assist our clients at all phases of their compliance efforts, including review of compliance programs, development and implementation of compliance programs and audits, and coordination of internal and governmental investigations.
Selected Representations
American Realty Capital Properties Audit Committee Investigation
DOJ LIBOR Investigation
Weil represents a former senior trader at a major financial institution in connection with the U.S. Department of Justice’s criminal investigation into alleged manipulation of LIBOR.
Toyobo - DOJ False Claims Act Investigation
Weil served as lead counsel overseeing the defense of Toyobo, a major Japanese fiber manufacturer, in connection with False Claims Act litigation brought by the U.S. DOJ, class action litigation, multiple personal injury suits, and claims by multiple state attorneys general and foreign states, among others, relating to the performance of Toyobo’s Zylon fiber in bullet-resistant vests used by thousands of law enforcement agencies worldwide. In 2018, Weil negotiated a settlement of all remaining claims after securing a number of successful outcomes in the various lawsuits.
Multi-agency Investigation into the Financial Crisis: AIG
SEC and other Regulatory Investigations
- An SEC investigation into a failed IPO of an electronic trading platform
- An SEC investigation and related class action litigation involving the underwriting of a SaaS provider
- A CFTC investigation into a conspiracy to manipulate the ISDAFix, the International Swaps and Derivatives Association’s benchmark rate for the swaps market
FCPA and other Anti-Bribery and Corruption Investigations
Weil is advising a global pharmaceutical company in connection with DOJ and SEC investigations of alleged violations of the FCPA involving the company’s subsidiaries in a number of countries in emerging markets. In 2018, Weil secured a declination when the DOJ closed its investigation without bringing an enforcement action.
Healthcare Fraud/False Claims Act Investigation
Key Contacts



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Recent Announcement
- Weil Named a Top Investigations Firm by Global Investigations Review in 2024 Firm Announcement — November 18, 2024
- Weil Shortlisted for Top 2024 Benchmark Litigation Honors Firm Announcement — January 17, 2024
Ranked among the leading firms in New York for White Collar Crime and Government Investigations.
Chambers USA 2024
Weil’s White Collar practice is described as “adept at handling cross-border and multijurisdictional proceedings by the DOJ, SEC and international regulatory bodies” with “a strong, practical and experienced team that gets good results for its clients.”
Chambers USA
Ranked among the top investigations firms globally for ten consecutive years.
Global Investigations Review’s GIR 100 2015-2024
Weil has a track record of netting its client impressive results. It has proven time and again that it can secure declinations for companies.
Global Investigations Review
Weil is recognized among the leading firms in the U.S. for Corporate Investigations and White-Collar Criminal Defense for both Advice to Corporates and Advice to Individuals.
Legal 500 US 2024
Weil is “excellent on all levels” and offers “exceptional litigators with incredible bench strength and expertise who are “very knowledgeable [and] extremely responsive.”
Legal 500 US
Weil “has a respected litigation practice with a track record of handling criminal defense proceedings and investigations involving multiple regulatory bodies, drawing on extensive in-house prosecutorial experience.”
Chambers USA
Awards and Recognition, Speaking Engagements, Latest Thinking, Firm News & Announcements, Recent Announcement
Awards and Recognition
- Weil Named a Top Firm Globally for Investigations Award Brief — Global Investigations Review’s GIR 100 2015-2024
- Weil Named a “Leading Firm” for Litigation: White-Collar Crime & Government Investigations, New York Award Brief — Chambers USA 2024
- Weil Named a “Leading” Firm for Corporate Investigations and White-Collar Criminal Defense – Advice to Corporates Award Brief — Legal 500 US 2024
- Weil Named a “Leading” Firm for Corporate Investigations and White-Collar Criminal Defense – Advice to Individuals Award Brief — Legal 500 US 2024
Speaking Engagements
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Storming the Gatekeepers: When Compliance Officers and In-House Lawyers Are at Risk 2025
Speaker(s):
Robert Stern
July 16, 2025 — New York, NY — Weil Securities Litigation partner Robert Stern moderated the 2025 edition of PLI’s annual symposium, “Storming the Gatekeepers: When Compliance Officers and In-House Lawyers Are at Risk,” and also participated in several panels throughout the full-day event.
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Storming the Gatekeepers: When Compliance Officers and In-House Lawyers Are at Risk 2024
Speaker(s):
Robert Stern
January 17, 2024 — New York, NY — Weil Securities Litigation partner Robert Stern moderated the 2024 edition of PLI’s annual symposium, “Storming the Gatekeepers: When Compliance Officers and In-House Lawyers Are at Risk,” and also participated in several panels throughout the full-day event.
Latest Thinking
- Why A Rare SEC Dismissal May Not Reflect A New Approach Publication — Law360 — By Andrew B. Dean and Greg Burton — PDF — March 14, 2025
- What the SEC’s Revocation of Delegated Authority Means for Investigations: Key Takeaways Alert — Securities Litigation — By Sanjay Wadhwa, Robert Stern, Andrew B. Dean, Howard B. Dicker and Adé Heyliger — PDF — March 12, 2025
- Trump’s Federal Contracting Executive Order Seeks To Impose False Claims Act Liability On Contractors Promoting “Illegal” DEI Programs Alert — By John P. Barry, Chantale Fiebig, David J. Lender, Mark A. Perry, Greg Silbert and Daniel L. Stein — PDF — January 24, 2025
- Antitrust in Trump 2.0: Expect Gap Filling from State Attorneys General Publication — Corporate Counsel — By Bambo Obaro and Luke Sullivan — January 22, 2025
- High Court Holds That New Challenges Can Be Brought To Old Agency Rules Publication — By Mark A. Perry, Zack Tripp and Josh Wesneski — PDF — July 01, 2024
Firm News & Announcements
- Weil Welcomes Former Senior SEC Enforcement Official Sanjay Wadhwa Press Release — February 03, 2025
- Weil Adds Former SEC Leader Andrew Dean in New York Press Release — January 21, 2025