Matthew Lanahan focuses his practice on commercial litigation, securities enforcement, and white collar defense. In particular, Mr. Lanahan has extensive recent experience in conducting internal investigations, and defending enforcement actions brought by the US Department of Justice (DOJ) and the US Securities & Exchange Commission (SEC). He also has extensive experience managing complex dockets and high-stakes matters, including MDLs. He has defended a major pharmaceutical company in regards to multiple product liability actions in state and federal court. In addition, he has represented a major energy company in regards to a class action settlement totaling billions of dollars. Mr. Lanahan has also maintained an active Pro Bono practice focused on civil rights litigation.

Prior to joining the firm, Mr. Lanahan attended the University of Michigan Law School, from which he graduated cum laude. Mr. Lanahan earned his BA in English from Virginia Tech, graduating summa cum laude, Honors Baccalaureate.


The Supreme Court Unanimously Finds That SLUSA Did Not Strip State Courts of Jurisdiction Over Class Actions Asserting Violations of the Securities Act of 1933
Global Anti-Corruption Insights: Summer 2017
Update on Recent Enforcement, Litigation, and Compliance Developments
Global Anti-Corruption Insights: Winter 2017
Update on Recent Enforcement, Litigation, and Compliance Developments


  • JD, University of Michigan Law School, 2014, cum laude
  • BA, English, Virginia Tech, 2007, summa cum laude, Honors Baccalaureate
  • District of Columbia
  • Virginia

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