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Senior Leadership

Margaret Garnett
Deputy United States Attorney

Margaret Garnett is the Deputy United States Attorney for the Southern District of New York.  Ms. Garnett returned to the Office to assume that role on November 29, 2021.

Ms. Garnett was previously an Assistant United States Attorney in the Office for over twelve years, from 2005 to 2017, serving in the Criminal Division.  Ms. Garnett had numerous supervisory roles during her previous tenure in the Office, including Chief of the Violent & Organized Crime Unit and Chief of Appeals.  Ms. Garnett received the Justice Department’s Director’s Award for Superior Performance, as well as the 2016 Stimson Medal, which is awarded annually by the New York City Bar Association to one outstanding Assistant in the Criminal Division and Civil Division.  From 2017 to 2018, Ms. Garnett was the Executive Deputy Attorney General for Criminal Justice in the New York State Attorney General’s Office, leading the prosecutors, investigators, and other personnel in that Office’s Criminal Division.  From 2018 to 2021, Ms. Garnett was the Commissioner of the New York City Department of Investigation, which is the oldest municipal anti-corruption agency in the country and serves as Inspector General for all of New York City government.

Ms. Garnett graduated from the University of Notre Dame in 1992, earned a masters degree in Political Science from Yale University, and earned her law degree from Columbia Law School in 2000, where she was a James Kent Scholar. Upon graduation from law school, Ms. Garnett was an associate at Wachtell, Lipton, Rosen & Katz, and then served as a law clerk to the Honorable Gerard E. Lynch, then a judge in the United States District Court for the Southern District of New York.

Andrea Griswold
Chief Counsel to the United States Attorney

Since March 2013, Ms. Griswold has served as an Assistant U.S. Attorney in the Southern District of New York. Beginning in June 2020, she served as the Deputy Chief and then the Chief of the Securities and Commodities Fraud Task Force. Prior to assuming a supervisory position in that unit, Ms. Griswold investigated and prosecuted a wide variety of significant securities fraud and public corruption cases, and also served as an Acting Chief of the Narcotics Unit.  Prior to her public service, she worked for more than five years as an associate at Simpson Thacher & Bartlett.  Ms. Griswold received her B.A. cum laude from Georgetown University and her J.D. from New York University School of Law. She is currently also serving as Co-Chief of the Securities and Commodities Fraud Task Force.

Daniel M. Gitner
Chief, Criminal Division

Daniel M. Gitner is the Chief of the Criminal Division in the United States Attorney’s Office for the Southern District of New York. Mr. Gitner returned to the Office to assume that role on November 22, 2021.

Mr. Gitner was previously an Assistant United States Attorney in the Office for approximately eight years, from 1997 to 2005, serving in the Criminal Division.  From 2003 to 2005, Mr. Gitner was Chief of the General Crimes Unit.  During his tenure, Mr. Gitner received the Justice Department’s Director’s Award for Superior Performance, and in 2003 the Federal Law Enforcement Foundation named him the Federal Prosecutor of the Year.  From 2005 to 2021, Mr. Gitner was a partner at Lankler Siffert & Wohl LLP, where he represented individuals and entities in white collar criminal and regulatory matters.  He is a fellow of the American College of Trial Lawyers.

Mr. Gitner graduated cum laude from Cornell University in 1992 and as a Harlan Fiske Stone Scholar from Columbia Law School in 1995.  Upon graduation from law school, Mr. Gitner served as a law clerk to the Honorable Naomi Reice Buchwald and then to the Honorable Barbara S. Jones, both of the United States District Court in the Southern District of New York.

Jeffrey Oestericher
Chief, Civil Division

Jeffrey Oestericher is the Chief of the Civil Division for the United States Attorney’s Office for the Southern District of New York.  Mr. Oestericher has been with the Office of the United States Attorney for the Southern District of New York for 22 years, and has been a Deputy Chief in the Civil Division since March 2003. 

Mr. Oestericher began his career as an Assistant United States Attorney for the Southern District of New York in the Civil Division in June 1994.  Five years later, he became the Deputy Chief of Appeals in 1999.  During his tenure, Mr. Oestericher played an important role in many significant civil cases, including as lead attorney in U.S. v. Wells Fargo et al., a mortgage fraud case that resulted in a $1.2 billion judgment and admissions.  He received the Henry L. Stimson Medal from the New York City Bar Association in 2003.

He is a 1987 graduate from the University of Rochester and a 1990 graduate from Yale Law School.

Updated April 8, 2022

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