Ben Singer

O'Melveny & Myers LLP

Benjamin D. Singer represents multinational corporations and their boards and executives in high-stakes criminal and civil investigations by the U.S. Department of Justice, Securities and Exchange Commission, and other federal and state agencies.  Ben joined O’Melveny after a decade at DOJ, where he most recently served as Chief of the Department of Justice’s Securities & Financial Fraud Unit.

In this role, Ben was the lead prosecutor on several of the largest cross-border cases in DOJ history, including Volkswagen’s alleged evasion of U.S. emissions standards, the foreign exchange manipulation cases, and cases alleging LIBOR manipulation.

Prior to that, Ben was the Chief of the DOJ’s Health Care Fraud Unit, where he supervised corporate health care prosecutions involving major health care providers, pharmaceutical manufacturers, and medical device manufacturers.

As Chief of the DOJ’s Securities & Financial Fraud Unit, Ben oversaw approximately 50 federal prosecutors investigating complex securities, commodities, and other corporate fraud and corruption offenses, including market manipulation, spoofing, insider trading, accounting fraud, procurement fraud, money laundering, environmental crimes, antitrust offenses, and bribery.

As Chief of the DOJ’s Health Care Fraud Unit, Ben supervised a team of over thirty prosecutors that prosecuted offenses in the health care industry, including fraud, kickbacks, money-laundering, and FCPA-related offenses.

Ben is a formidable trial lawyer, having served as first-chair trial counsel in eight felony white-collar jury trials during his time at the DOJ. His work twice earned him the DOJ’s highest honor: the Attorney General’s Award.

Prior to his government service, Ben worked in the New York office of two international law firms.


  • In Government:
    • Lead counsel for the United States in investigation of Volkswagen, Audi, and their current and former executives for fraud, violations of the Clean Air Act, and obstruction of justice in the “Dieselgate” emissions case, including negotiation of one of the largest fines in U.S. history.
    • Lead trial counsel for the United States in investigation and trial of CEO, CFO, and other key executives of a publicly-traded medical device manufacturer in a $750 million accounting fraud case.
    • Co-lead counsel for the United States in investigation of five global financial institutions for alleged manipulation in the foreign-exchange markets.
    • Trial counsel for the United States in trial of a senior executive of a health care company who participated in a $205 million billing fraud.
    • Lead trial counsel for the United States in trial of health care executive who participated in $70 million fraud on Medicare.
    • Supervised investigation of major financial institutions for alleged manipulation of LIBOR and related benchmark interest rates in the Southern and Eastern Districts of New York and negotiated related corporate resolutions.
    • Supervised investigation and extradition of Navinder Sarao, the so-called “Flash Crash Trader” for fraud and spoofing in the commodities markets.
    • Supervised investigation of the largest bribery scandal in the history of the U.S. Navy, involving a Malaysian defense contractor known as “Fat Leonard” Francis, and his company, Glenn Defense Marine Asia.
    • Supervised investigation of two former employees of a global financial institution for defrauding one of its customers in a multi-billion dollar foreign exchange transaction through front-running and ramping.
    • Supervised investigation of a global pharmaceutical manufacturer for allegedly bribing physicians and government health officials in China in violation of the Foreign Corrupt Practices Act (FCPA).
  • In Private Practice:
    • Representation of a major financial institution in a DOJ investigation relating to insider trading.
    • Representation of a national managed-care organization in an internal review of its compliance with Medicare Advantage risk-adjustment reimbursement rules.
    • Representation of a national managed-care organization in a qui tam False Claims Act investigation into compliance with Medicare Advantage regulations, including allegations related to inflated premiums resulting from inaccurate risk-adjustment submissions.
    • Representation of a Japanese manufacturer and its senior executives in international price-fixing cartel investigations by worldwide antitrust authorities, including the DOJ, the European Commission, and the U.K.’s Office of Fair Trading.
    • Representation of a corporate executive in DOJ and SEC cases alleging a $1 billion accounting fraud.
    • Representation of the board of a publicly-traded company in a DOJ and SEC investigation into alleged “channel stuffing” accounting fraud by senior executives.

Government Experience:

  • Chief, Securities & Financial Fraud Unit, Fraud Section, Criminal Division, U.S. Department of Justice (2014–2018)
  • Chief, Health Care Fraud Unit, Fraud Section, Criminal Division, U.S. Department of Justice (2013–2014)
  • Assistant Chief, Fraud Section, Criminal Division, U.S. Department of Justice (2011–2014)
  • Trial Attorney, Fraud Section, Criminal Division, U.S. Department of Justice (2009–2011)


  • New York*
  • US District Court, Southern District of New York
  • US District Court, Eastern District of New York


  • Cornell Law School, J.D., 2002
  • The College of William & Mary, B.A., 1999: with honors


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What types of cases Attorney Ben Singer & O'Melveny & Myers LLP can handle?
O'Melveny & Myers LLP can handle cases related to laws concerning Corporate, Litigation, White Collar Crime. We manually verify each attorney’s practice areas before approving their profiles and reviews on our website.
Where is O'Melveny & Myers LLP located?
O'Melveny & Myers LLP is located at 1625 Eye Street, Washington, DC 20006, USA. You can reach out to O'Melveny & Myers LLP using their phone line 202-383-5201. You can also check their website or email them at [email protected].
How much would it cost to hire O'Melveny & Myers LLP?
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