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Government and Internal Investigations

Government and internal investigations can be a highly sensitive, time-consuming ordeal for any company. Large and small companies and their boards, audit and special committees, officers and directors, and other individuals regularly turn to us for advice on a wide range of criminal, regulatory, congressional and other sensitive government inquiries and internal investigations.

“The advice from the Simpson Thacher white-collar team is always very thoughtful and thorough. They do an extremely good job handling complex situations during high-stakes investigations.”
Legal 500 U.S. 2024, quoting a source

Financial institutions, professional services firms, multinational companies, market participants, and executives and other professionals rely on our guidance in investigations by the DOJ, U.S. Attorneys’ Offices, the SEC, the CFTC, the CFPB, state attorneys general, district attorneys, the Federal Reserve Bank, FINRA, the Senate Permanent Subcommittee on Investigations and other regulators throughout the world. We also have extensive experience in investigations relating to the offering and trading of crypto and other digital assets.

Our matters have included allegations of:

  • Securities, accounting and financial fraud
  • Investment advisor fraud
  • Violations of OFAC, economic sanctions and trade controls
  • Anti-money laundering violations
  • Consumer fraud and deceptive practices
  • Violations of the False Claims Act and FIRREA
  • Bid rigging, price fixing, and other civil and criminal antitrust violations
  • FCPA and anti-corruption violations
  • Violations of regulations governing the offering and trading of crypto and other digital assets
  • Intellectual property theft, computer hacking and data breaches
  • Misconduct by senior executives (including fraud, expense account abuse, and sexual misconduct)
  • Insurance and healthcare fraud
Establishing effective compliance programs has become increasingly important to help mitigate risk. We work proactively with our clients to design and implement effective policies and procedures. Our practical, integrated advice “sees” beyond the issue immediately at hand and takes into account potential reputational, institutional, and other collateral issues that might impact our clients.  
Top Band Rankings
Corporate Crime and Investigations: The Elite,
Securities: Regulation, and FCPA
Chambers USA
2025
“GIR 30”
Global Investigations Review
2024

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