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Andrew Z. Michaelson

New York

t: 212.446.2382
f: 212.446.2350
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Areas of Practice


Crisis Management and Government Response

Global Investigations and White Collar Defense

Privacy, Cybersecurity & Technology

Securities Litigation


Harvard Law School, J.D., cum laude, 2002

Princeton University, A.B., cum laude, Politics, 1997


Hon. Sarah S. Vance, United States District Court for the Eastern District of Louisiana, 2002-2003


New York

Andrew Michaelson is a partner in the firm’s New York City office and a member of the firm’s Global Investigations and White Collar Defense group. His practice focuses on regulatory enforcement proceedings, white-collar criminal defense, internal investigations, and complex civil litigation. 

Mr. Michaelson represents companies and individuals in connection with investigations by the U.S. Department of Justice, the U.S. Securities and Exchange Commission, the U.S. Commodity Futures Trading Commission, and numerous U.S. Attorneys' and state Attorney Generals' offices.  He conducts internal investigations and is an experienced civil litigator. 

From 2006 to 2012, Mr. Michaelson served in government with the SEC and then the Office of the U.S. Attorney, Southern District of New York (SDNY).  As profiled in The Wall Street Journal and The New Yorker, Mr. Michaelson uncovered and then led the SEC's investigation into insider trading by Raj Rajaratnam, the founder and owner of the Galleon Group family of hedge funds.  In the middle of the investigation, Mr. Michaelson transferred to SDNY to continue to develop the case, and he served as trial counsel in U.S. v. Rajaratnam.  He also successfully prosecuted numerous other criminal securities and wire fraud cases.  While at the SEC, Mr. Michaelson led investigations into a wide variety of federal securities law violations including market manipulation, front-running, cherry-picking, unlawful short-selling, specialist trading ahead, and other unlawful conduct. 

Mr. Michaelson has guest lectured at Harvard Law School.  He has been recognized by Lawdragon as one of the 500 leading lawyers in America, and by Super Lawyers as a “Rising Star.” 

Selected Representations:

  • HSBC in RMBS-related investigations and civil litigation, including civil litigation brought by the Federal Housing Finance Agency, as conservator for Fannie Mae and Freddie Mac.
  • A Fortune 500 company in connection with a bribery and honest services fraud investigation by the Office of the U.S. Attorney, Eastern District of New York. 
  • A registered investment adviser with $20+bn in AUM, in connection with an SEC investigation.
  • Barclays in LIBOR- and ISDAFIX-related matters, including government investigations and related civil litigation.
  • Individuals in connection with government investigations into alleged manipulation of the FX markets.
  • Individuals in connection with government investigations into alleged fraud in connection with the sale of RMBS on the secondary market. 
  • Numerous registered investment advisers in connection with SEC investigations into potential violations of federal securities laws.

Related News

Boies, Schiller & Flexner Attorneys Recognized as New York-Metro Super Lawyers (October 2015)

Boies, Schiller & Flexner Attorneys Recognized as New York Metro Super Lawyers (October 19, 2014)

54 BSF Attorneys Recognized as Top Lawyers in 2013 Super Lawyers Magazine (2013 Super Lawyers)

The BSF Report: Spring 2013 (03.08.2013)

Government Service

Senior Counsel, United States Securities and Exchange Commission, Division of Enforcement (2006-2012) Special Assistant U.S. Attorney, Office of the United States Attorney, Southern District of New York (2008-2012)