Boston — Sidley Austin LLP announced today that Jack W. Pirozzolo, former First Assistant United States Attorney for the District of Massachusetts, has joined Sidley’s Boston office as a partner and member of the firm’s White Collar: Government Litigation & Investigations practice.

Prior to joining Sidley, Mr. Pirozzolo served for more than 10 years in the U.S. Attorney’s Office, first as an Assistant U.S. Attorney and then, since late 2009, as the First Assistant U.S. Attorney. As First Assistant, Mr. Pirozzolo was a principal litigator for the United States in the District of Massachusetts overseeing hundreds of criminal and civil matters handled by the U.S. Attorney’s Office, including matters of national and international significance, such as the investigation, apprehension and still ongoing prosecution of the Boston Marathon Bombing defendant, Djokhar Tsarnaev; the apprehension and prosecution of James J. “Whitey” Bulger; and the largest health care fraud resolution in U.S. history.  While First Assistant, Mr. Pirozzolo also directly prosecuted various matters involving white collar offenses, primarily securities fraud. He also was the lead prosecutor in the harboring investigation and prosecution of James Bulger’s longtime girlfriend, Catherine Greig.          

“The experience Jack has gained at the U.S. Attorney’s office will allow him to immediately provide value and insight to our clients in a range of industries,” said Mark Hopson, managing partner of Sidley’s Washington, D.C. office, member of the firm’s Management Committee and co-global coordinator of Sidley’s White Collar practice. “We are pleased that Jack chose our firm as the place to continue his distinguished career.”

Before becoming First Assistant, Mr. Pirozzolo served as an Assistant U.S. Attorney in the Economic Crimes Unit, where he primarily prosecuted securities, tax, and bank fraud matters. In 2006 and 2007, he received recognition from the Department of Justice for his role in prosecuting a series of mutual fund trading abuse cases. Prior to joining the U.S. Attorney’s Office, he was a partner with a Boston law firm where he specialized in securities and corporate litigation, accountant’s professional liability, and insider trading matters. Mr. Pirozzolo received his undergraduate degree, cum laude, from Yale University. He attended the University of Chicago Law School, where he was comment editor of the University of Chicago Law Review, graduated with honors and was elected to the Order of the Coif. He also clerked for Chief Judge Sandra L. Lynch on the United States Court of Appeals for First Circuit and Judge Edward R. Becker on the United States Court of Appeals for the Third Circuit.

“Jack is a well-respected federal prosecutor and we welcome him to Sidley,” said Neal Sullivan, a co-global coordinator of the firm’s Securities & Derivatives, Enforcement and Regulatory practice. “His experience handling securities enforcement matters in an important jurisdiction will further strengthen our global practice, and we look forward to his many contributions.”

With more than 1,800 lawyers in 19 offices worldwide, Sidley has built a reputation as a premier legal adviser for global businesses and financial institutions. For the fourth consecutive year, and every year since the survey’s inception, Sidley received the most first-tier national rankings of any U.S. law firm in the 2014 U.S. News – Best Lawyers® “Best Law Firms” survey. On Law360’s list of Global 20 Firms, Sidley was ranked among the top law firms “with the greatest global reach and expertise.” To stay up-to-date with the latest Sidley news, please follow us on Twitter at @SidleyNewsroom or download the Sidley Mobile App.