Former Assistant United States Attorney David Siegal Joins New York Office of Haynes and Boone


Senior white collar federal prosecutor David Siegal has joined the New York office of Haynes and Boone, LLP as a partner in the White Collar Criminal Defense Practice Group, where his practice will focus on white collar defense and securities fraud litigation.

Mr. Siegal served for the last nine years as an Assistant United States Attorney in the Southern District of New York, where he acted as lead prosecutor on numerous complex white collar criminal investigations and prosecutions, federal criminal jury trials and Second Circuit appeals.

As a member of the Securities and Commodities Fraud Task Force since 2005, Mr. Siegal was responsible for investigating and prosecuting a wide variety of securities fraud related matters, including those involving accounting fraud, market manipulation, insider trading and investment adviser fraud. From 2002 to 2005, Mr. Siegal was a member of the Major Crimes Unit, handling corporate insurance, bank, tax and investment fraud, and crimes involving computer technology attacks and intellectual property theft. 

Mr. Siegal began his career with the law firms of Paul, Weiss, Rifkind, Wharton & Garrison LLP and Kronish Lieb Weiner & Hellman LLP (now Cooley Godward Kronish LLP), where he gained experience handling white collar criminal and commercial civil matters.

"In both public and private practice, David has compiled an impressive record as a financial fraud litigator," said Ron Breaux, partner and head of Haynes and Boone’s White Collar Criminal Defense Practice Group. “As the new presidential administration overhauls financial and regulatory offices, his experience will be invaluable in helping clients navigate the changing business environment."

The addition of Mr. Siegal complements the services provided through Haynes and Boone’s New York office. Kenneth Bezozo, managing partner of the New York office said, "Our New York litigation practice offers multi-disciplinary support to a wide range of corporate clientele, and David is an excellent addition to our current team."

Said Mr. Siegal: "Given the unprecedented challenges facing companies today, this is an ideal time for me to join Haynes and Boone. The firm has vast resources and possesses broad-based talent across numerous disciplines encompassing the entire range of corporate legal services."

The arrival of Mr. Siegal is one of several high profile lateral hires made recently by Haynes and Boone. Earlier this year, Paul Dickerson, the chief operating officer at the Department of Energy’s office of Energy Efficiency and Renewable Energy was hired to lead the firm’s new clean tech practice.

Haynes and Boone, LLP is an international corporate law firm with offices in Texas, New York, California, Washington, D.C., Mexico City and Moscow, providing a full spectrum of legal services. With almost 550 attorneys, Haynes and Boone is ranked among the largest law firms in the nation by The National Law Journal. The firm has been recognized as one of the "Best Corporate Law Firms in America" (Corporate Board Member Magazine, 2001-2008), as one of "The Best 20 Law Firms to Work For" (, 2008), and as a Top 100 law firm for both diversity (MultiCultural Law Magazine, 2008) and women (Women 3.0, 2008).

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