Mark tries cases and specializes in matters that are preparing for trial. He handles bet-the-company investigations and litigation, but some of his most significant successes have come in cases where he has been able to shut down a prosecution. In almost 20 years as a criminal defense attorney, Mark has handled a wide array of matters across the United States and around the world. He has represented individuals in some of the largest fraud cases in history, as well as a wide array of traditional criminal cases.

Mark’s practice also involves all manner of enforcement matters. He has significant experience before the Securities and Exchange Commission and a myriad of federal regulatory agencies, dealing with formal actions and investigations by the inspectors general of nearly every government agency.

Mark regularly represents companies and boards of directors, while maintaining a significant number of individual representations in a wide array of criminal, civil and administrative matters. He is also very experienced in representing individuals in Foreign Corrupt Practice Act matters, having representing individuals in some of the largest FCPA investigations in Department of Justice history.

Mark’s representative experience list is familiar to many, as so many of his clients draw significant media coverage because of the nature of the matter and/or the client itself. Mark’s ability to manage public relations is something that has come from years of high-profile representations taken from the headlines.

Mark also handles civil matters in a wide variety of settings. From government regulatory enforcement matters to ancillary civil suits that arise from his other representations.

Mark has been recognized as a Super Lawyers honoree in the area of White Collar Criminal Defense consistently since 2011. In one of the most competitive legal markets in the country, Mark was also recognized as one of the Washington Magazine’s Top 100 lawyers in 2016. Mark is also a regular contributor to local and national television and print as an expert. He is regularly quoted in the Washington Post, New York Times and Associated Press, as well as on CNN, Fox News, NBC and local affiliates.

In addition to his proven track record as a trial lawyer, Mark is also an adjunct professor at The George Washington University School of Law and serves as an elected member of the Board of Directors for the National Association of Criminal Defense Lawyers (NACDL), where he is a member of the White Collar Crime Committee, the Sentencing Committee and has been appointed as the NACDL representative to the American Bar Association twelve-member Committee on Standards and Policy. Mark also serves on the Board of Directors of the Brockport Foundation.

Professional Activities

  • American Bar Association, Criminal Justice Standards Committee
  • Member, White Collar Crime Committee, National Association of Criminal Defense Lawyers (NACDL)
  • Member, Sentencing Committee, NACDL
  • Member, New York State Bar Association Committee on Professional Discipline
  • Member, American Constitution Society
  • Past President, Washington, D.C. Chapter of the Boston University School of Law Young Alumni Association
  • Board Member, The Sparkle Effect

Honors and Awards

  • Chambers USA Ranked Lawyer, Litigation: White-Collar Crime & Government Investigations, District of Columbia, 2018-Present
  • Super Lawyers: Super Lawyers Honoree, 2011-Present
  • Washington Magazine’s Top 100 Lawyers, 2016

Any result the lawyer or law firm may have achieved on behalf of clients in other matters does not necessarily indicate similar results can be obtained for other clients.

  • Lead counsel in a federal criminal matter in Maryland. Took over representation after client was convicted of multiple fraud counts following a four-week trial. Successfully set aside the verdict and obtained a new trial, which was ultimately dismissed by the Court on the eve of retrial, after exposing government misconduct that “shocked the conscience” of the Court.
  • Led team in multi-jurisdictional representation for a software company targeted in multiple states for violating state gambling and money laundering statutes. Successfully prevented an indictment in Massachusetts and obtained the return of hundreds of thousands in seized funds and millions more sought civilly. Successfully defeated multiple superseding indictments in Ohio seeking over $100 million in forfeiture and 75 years in prison.
  • Led the defense in a month-long trial in federal court in Ohio for a business owner under indictment for campaign finance violations, obtaining “not guilty” in nineteen of twenty charges.
  • Lead counsel in a month-long murder trial of a federal agent in the United States Virgin Islands resulting in an acquittal on motion at the conclusion of the prosecution case.
  • Lead counsel in the first criminal charges against individuals in a nationwide sales seminar company. Full acquittal on all charges following a month-long trial in federal court in Virginia.
  • Represented multiple professional athletes in a number of criminal, civil and administrative matters in a wide-ranging number of investigations by the professional league, as well as local and federal authorities.

Bar admissions

1999, District of Columbia

2005, Maryland

2006, New York

Admitted to practice before:

  • United States District Court for the District of Maryland
  • Southern District of New York and the District of Columbia
  • Fourth Circuit Court of Appeals
  • United States Supreme Court


  • J.D., 1998, Boston University School of Law
  • B.S., 1995, State University of New York at Brockport
    • with honors
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