Matthew P. Diehr

Matt has both first-chair and second-chair trial experience defending individual and corporate clients against alleged violations of United States criminal and civil laws.

As a member of Husch Blackwell’s Government Compliance, Investigations & Litigation team, Matt represents and advises clients in a wide variety of lawsuits and regulatory disputes across the United States. This practice has included defending individuals accused of securities fraud, healthcare fraud and public corruption. He has represented corporations combating allegations raised by qui tam relators, in asset forfeiture proceedings as to anti-money laundering issues, and in civil and criminal litigation. He also has significant experience representing individuals and corporations in alternative capacities, such as advocating for clients victimized by fraud. Recently, Matt successfully petitioned the Eighth Circuit Court of Appeals for a rare writ of mandamus compelling the U.S. District Court to recognize Husch Blackwell’s client as a victim of a Ponzi scheme.

Complementing Matt’s litigation practice, he has assisted a number of corporate clients in conducting independent investigations in response to allegations of corporate or individual wrongdoing. This experience has included allegations of corporate espionage and healthcare fraud, for example.

Matt is very active in public service and in local, state and federal bar associations. He has written several articles for the St. Louis Bar Journal, most recently on the Yates Memorandum and its effects on those accused of wrongdoing. He was recently selected as a member of the 2015-16 Missouri Bar Leadership Academy class, and he is active in the St. Louis chapter of the Federal Bar Association.