Mayer Brown announced today that Daniel L. Stein, former Chief of the Criminal Division in the US Attorney’s Office for the Southern District of New York (SDNY), will join the firm’s New York office as a partner in the Litigation & Dispute Resolution practice, where he will lead the firm’s global Regulatory & Investigations group and serve as a co-leader of the White Collar Defense & Compliance group.

“Dan’s wide-ranging trial and investigatory background, in which he served as the first-chair for more than a dozen criminal cases in both public and private practice, significantly enhances our worldwide roster of talented trial lawyers,” said Mike Lackey, leader of Mayer Brown’s global Litigation & Dispute Resolution practice. “His insight into and experience in representing clients in the financial services industry, in addition to his extensive experience prosecuting and defending cases in the SDNY, further expands the firm’s ability to represent our clients in the Southern District in particular and across the US and globe more generally. His arrival greatly benefits clients facing challenges involving corporate compliance, internal investigations, civil litigation and potential criminal exposure.”

Mr. Stein’s decade-long career with the US Attorney’s Office in New York included two terms of duty. He first joined in 2003, where, as an Assistant US Attorney, he investigated and prosecuted cases involving a wide range of federal crimes, including those involving companies in the financial services industry. In this role, he represented the US in several significant criminal public corruption cases. From 2009 to 2011, he served as Chief of the Office’s Public Corruption Unit, where he was the principal trial counsel in more than a dozen criminal trials and argued numerous appeals in the US Court of Appeals for the Second Circuit.

In 2014, at the request of Preet Bharara, Mr. Stein rejoined the US Attorney’s office, serving as Chief Counsel to the US Attorney before stepping into his most recent role for the past year, where he oversaw the SDNY’s criminal prosecutions and investigations, including those involving securities fraud, insider trading, public corruption, foreign corrupt practices, criminal tax offenses, money laundering, economic sanctions, cybercrime, narcotics trafficking, violent crimes and terrorism.

Between stints in the SDNY, Mr. Stein spent several years in private practice, where he handled criminal and regulatory matters for a number of major financial institutions and other clients.

“I’m pleased to join Mayer Brown’s extensive team of best-in-class litigators, who have an exceedingly strong reputation for handling sophisticated, high stakes disputes,” said Mr. Stein. “The firm’s geographic scope, broad and deep client base with financial institutions, collegial atmosphere and commitment to growing its investigatory and regulatory practice will enable me to leverage my experience to benefit our global clients.”

At Mayer Brown, Mr. Stein will focus his practice on representing and counseling financial services firms on regulatory enforcement, including securities enforcement, government and internal investigations, white collar criminal defense and complex civil litigation. He will counsel corporate and individual clients in a range of complex issues, including US Securities Exchange Commission and Financial Industry Regulatory Authority investigations and enforcement actions.

Richard Spehr, partner-in-charge of Mayer Brown’s New York office, added, “Dan’s proven track record in managing complex, high-profile white collar-related matters, particularly in the financial services sector, is a major asset for our clients. His arrival reinforces our focus on serving our major financial services clients in New York and elsewhere and continues the strategic expansion of our New York office.”

Earlier in his career, Mr. Stein clerked for the Honorable Leonard B. Sand of the United States District Court for the Southern District of New York. He earned a JD from Yale Law School and graduated Phi Beta Kappa from Columbia University.