Mathew S. Rosengart

Mathew S. Rosengart: Attorney with Greenberg Traurig, LLP
  • Shareholder at Greenberg Traurig, LLP (2021 Attorneys)
  • 1840 Century Park East, Suite 1900, Los Angeles, CA 90067-2121
    View Mathew S. Rosengart's other office locations
  • Peer Reviews

    No Reviews
  • Profile Visibility [ i ]
    • #855 in weekly profile views out of 37,659 Attorneys in Los Angeles, CA
    • #46,947 in weekly profile views out of 1,822,215 total attorneys Overall


Mathew S. Rosengart is a shareholder in the Litigation Practice with a focus on commercial, media and entertainment, and white collar defense litigation.

Mathew is a former federal prosecutor, with substantial civil and criminal trial experience. A former law clerk to Justice David H. Souter on the Supreme Court of New Hampshire, he also served as a Supervisory Assistant United States Attorney and Justice Department Trial Attorney, where he prosecuted a broad array of cases ranging from violent crimes to public corruption.

Mathew has served as lead counsel in more than a dozen trials and conducted numerous complex federal grand jury investigations, including several of national and international significance, such as the investigation and prosecution of a United States Cabinet Officer and a central figure in the China-Gate federal campaign contribution/espionage cases. He further prosecuted a public corruption case commenced at the request of former Attorney General Janet Reno, in which he conducted examinations of several high-ranking government officials, including senior members of the United States Senate, the Justice Department, and The White House.

Among other honors, Mathew has perennially been recognized as one of the nation’s preeminent entertainment litigators by both The Hollywood Reporter (in its 2014, 2015, 2016, and 2017 “Power Lawyer Report,” listing the industry’s Top-100 attorneys) and Variety (in its 2014, 2015, 2016, 2017, 2018, and 2019 prestigious “Legal Impact Report,” spotlighting the world's leading attorneys in the entertainment industry).

Mathew has represented a number of well-known and high-profile entertainment and other clients in matters ranging from defamation to breach of contract and related matters, including several Academy-Award-nominated and winning writers, directors, and actors, as well as several noted production companies. He has, for example, obtained the complete, pre-trial dismissal of $100 million of claims against the Touring Company of a major Broadway show; resolved an invasion of privacy and right of publicity lawsuit against an internationally-renowned photographer; represented a noted producer in an internal investigation; obtained the complete, pre-trial dismissal of a breach of contract case brought against an Academy-Award nominated director/producer; obtained the dismissal (in the middle of trial) of an $8 million dollar breach of contract case against an Academy Award-winning writer/director; and resolved a motion picture “cutting rights” dispute on behalf of an Academy Award-winning actor/director.

Additionally, Mathew has represented global financial institutions in various matters, including arbitrations before the NASD and AAA; handled complex FCA cases; conducted complex internal investigations on behalf of Fortune 500 companies; and advised and represented members of senior management in FBI and SEC investigations. He obtained the complete dismissal of a $25 million securities fraud case brought against a major global bank by a large group of investors (after a multi-week trial), served as lead counsel in trials and arbitrations on behalf of an international asset management company, and represented a prominent hedge fund manager in a case involving allegations of fraud and breach of fiduciary duty (which was dismissed).


•Media and entertainment litigation
•White collar criminal defense

Recognition & Leadership

Awards & Accolades

•Listed, Variety, Legal Impact Report, 2014, 2015, 2016, 2017, 2018, and 2019
•Listed, The Hollywood Reporter, Power Lawyers: Top 100 Most Influential Entertainment Lawyers in America, 2014, 2015, 2016, and 2017
•Named one of California's Top 100 Trial Lawyers, The National Trial Lawyers
•Featured, Los Angeles Confidential Magazine, Power Player
•Special Achievement Award for Meritorious Acts of Service, United States Department of Justice
•Federal Bar Association’s Younger Lawyer Award - Awarded by Panel of Federal Judges to the Top 5 government litigators under age 36
•Special Act Awards for Outstanding Performance, United States Department of Justice, 1995-1996
•Commendation, federal prosecution and conviction of defendant in United States v. Sheffield, United States Department of Justice, Bureau of Alcohol Tobacco & Firearms, Internal Affairs
•Commendation, federal prosecution and conviction of defendant in United States v. Brisbane, United States Department of Justice

(Also at New York, New York Office)

Areas of Practice (3)

  • Litigation
  • Media & Entertainment Litigation
  • White Collar Defense & Special Investigations

Education & Credentials

Contact Information:
310.586.3889  Phone
310.586.7800  Fax
University Attended:
Tulane University, B.A., 1984
Law School Attended:
Boston College Law School, J.D., cum laude, 1987
Year of First Admission:
U.S. District Court for the Central District of California; U.S. District Court for the Eastern District of New York; U.S. District Court for the Southern District of New York; California; New York

Professional & Community Involvement

•Adjunct Professor of Law, Criminal Procedure: Grand Jury Law & Practice, Fordham Law School, 2004-2006
•Adjunct Professor of Law, White Collar Crime, Pepperdine University School of Law, 2007
•Faculty, United States Attorney General's National Advocacy Center, lecturing in Trial Practice, 2000
•Dean's Advisory Council, Tulane University
•Member, Association of Business Trial Lawyers Los Angeles

Birth Information:
New York, N.Y.
Reported Cases:
Experience: Previous Federal Government Employment: Trial Attorney, Civil and Criminal Divisions of the United States Department of Justice; Supervisory Assistant United States Attorney, United States Department of Justice; Senior Associate Independent Counsel/Supervisory Assistant United States Attorney, Office of Independent Counsel; Trial Attorney, United States Department of Justice, Criminal Division Campaign Finance Task Force

Peer Reviews

This lawyer does not have peer reviews.

*Peer Reviews provided before April 15, 2008 are not displayed.

Los Angeles, California

Contact Mathew S. Rosengart

Required Fields

Required Fields

By clicking on the "Submit" button, you agree to the Terms of Use, Supplemental Terms and Privacy Policy. You also consent to be contacted at the phone number you provided, including by autodials, text messages and/or pre-recorded calls, from Martindale and its affiliates and from or on behalf of attorneys you request or contact through this site. Consent is not a condition of purchase.

You should not send any sensitive or confidential information through this site. Emails sent through this site do not create an attorney-client relationship and may not be treated as privileged or confidential. The lawyer or law firm you are contacting is not required to, and may choose not to, accept you as a client. The Internet is not necessarily secure and emails sent though this site could be intercepted or read by third parties.