Edward C. O’Callaghan’s distinguished career in senior government roles and significant private practice experience position him to successfully advise and defend public companies, global financial institutions, asset management firms and executives in international and domestic regulatory investigations, criminal prosecutions and congressional inquiries, including matters involving securities fraud, insider trading and market manipulation, bank fraud, money laundering, accounting fraud, criminal antitrust, healthcare fraud, US export controls and sanctions regimes, corruption, RICO, and FCPA.  

Mr. O’Callaghan joined the firm in 2020 after serving as DOJ’s principal associate deputy attorney general where he acted as the principal counselor to the department’s second highest official, the deputy attorney general, and a key advisor to the Attorney General. In that role, Mr. O’Callaghan helped manage 113,000 attorneys, agents, investigators, and administrators, 93 US attorney offices, and all DOJ law enforcement agencies such as the Federal Bureau of Investigation; Drug Enforcement Agency; Bureau of Alcohol, Tobacco and Firearms; US Marshals Service; and the Bureau of Prisons. He also worked regularly with various committees, leadership members and staffers in both chambers of Congress. He supervised the DOJ’s responses to constant Hill inquiries, including daily negotiations with committee leadership and staffers, and the preparation of DOJ leadership for hearings and briefings before Senate Judiciary, Senate Finance, Senate Permanent Select Committee on Intelligence, Senate Committee on Homeland Security and Government Affairs, the “Gang of Eight,” House Judiciary, House Oversight and Government Reform, and House Permanent Select Committee on Intelligence.

During his most recent DOJ tenure from November 2017 to December 2019, Mr. O’Callaghan also served as acting deputy attorney general, the principal deputy assistant attorney general in DOJ’s National Security Division and the acting assistant attorney general in charge of the National Security Division. In this latter role, Mr. O’Callaghan supervised all units and components within the NSD, including the Counterterrorism Section, Counterintelligence and Export Control Section, Office of Intelligence, Office of Law & Policy, Foreign Investment Review Staff, and Office of Justice for the Victims of Overseas Terrorism.

Mr. O’Callaghan was a partner in two international law firms from 2009 to November 2017, during which his practice focused on representing financial institutions, public companies, asset management firms and executives in an array of international and domestic regulatory investigations and criminal prosecutions.

From 1998 until 2008, Mr. O’Callaghan was an Assistant US Attorney for the Southern District of New York and Co-Chief of the Terrorism & National Security Unit during the last three years of his tenure.