“Jonathan possesses the rare combination of great technical expertise, compassion and a steady temperament that is highly effective in guiding clients through difficult situations.”
“He is a tremendous lawyer who goes above and beyond to represent his clients.”
— Chambers USA 2024
A former assistant U.S. attorney, Department of Justice Fraud Section trial attorney and Securities and Exchange Commission senior counsel, Jon Barr is a seasoned advocate who vigorously defends and advises public companies, corporate executives, board members and individuals in complex civil, regulatory and criminal law enforcement investigations and litigation. Clients have entrusted Jon to defend the most challenging of SEC enforcement and DOJ criminal investigations. With more than 30 years of experience in government investigations, Jon is regularly retained by corporations, and executive management to conduct internal investigations into whether securities law, False Claims Act, OFAC sanctions, Foreign Corrupt Practices Act (FCPA) or other violations have occurred and to advise clients on remedial measures, compliance programs, training and self-disclosure. Jon has also advised corporate boards and board committees.
Jon’s engagements include representing clients in investigations involving the False Claims Act, complex accounting and securities issues, market manipulation restrictions, fraud allegations, insider trading restrictions, health care law issues, government contracting and procurement issues, the FCPA, the Federal Anti-Kickback Statutes, sanctions and export control restrictions, customs evasion allegations, money laundering allegations, federal criminal tax issues, asset forfeiture claims, the Commodity Exchange Act, the Martin Act and antitrust price fixing.
The Securities Docket named Jon to its “Enforcement 40” list of the “40 best and brightest securities enforcement defense lawyers in the business” in each year that it compiled this list, as well as its “Enforcement Elite” in 2024 and 2025. He is ranked in Chambers USA for Litigation: White Collar Crime & Government Investigations in the District of Columbia. Jon’s skill as a lawyer has been recognized by his inclusion, since 2013, in The Best Lawyers in America®, and by his designation as a “Super Lawyer” in Washington, D.C., since 2012. He has also been rated AV Preeminent®, the highest peer review rating available in the Martindale-Hubbell register for lawyers. Jon is a member of the firm’s Policy Committee.
