Ryan W. Mitsos


Ryan W. Mitsos has spent his career representing individuals in white-collar criminal defense and other complex criminal matters.

Ryan graduated from the University of Illinois at Urbana-Champaign in 2015, receiving a Bachelor of Arts in English. He earned his Juris Doctor from Boston University School of Law in 2019. While in law school, Ryan served as a law clerk at the Cook County State’s Attorney’s Office in Chicago, Illinois, as well as a judicial extern for former United States District Judge Samuel Der-Yeghiayan in the Northern District of Illinois.

Before joining Kaplan Marino, Ryan worked as a white-collar criminal defense attorney in Chicago, Illinois with the law firm of Monico & Spevack. In Chicago, Ryan defended John Hooker in the trial of the “ComEd Four,” a complex federal bribery case brought by the U.S. Attorney’s Office in the Northern District of Illinois. Ryan has represented individuals in all phases of the federal and state court proceedings involving charges of political corruption, healthcare fraud, wire fraud, SEC enforcement matters, and other financial crimes. He has also represented business executives and other individuals in federal sentencing proceedings, successfully averting prison time and obtaining otherwise favorable sentences for his clients.

Representative Matters

U.S. Attorney’s Office Elects Not to Prosecute

Convinced the U.S. Attorney’s Office in the Northern District of Illinois not to criminally prosecute a SEC matter involving allegations of a multi-year scheme to defraud investors through the sale of over 40 million dollars in unregistered securities and Ponzi-like payments to investors.

Client Sentenced to Time Served

Client was indicted on federal fraud charges for allegedly billing a private insurer approximately three million dollars for nonexistent therapeutic services as well as aggravated identity theft in the Northern District of Illinois. Client plead guilty to one count of health care fraud, and, after arguing in favor of our client’s unique personal circumstances, the client was sentenced to one day of time served.

Pretrial Diversion in PPP Loan Fraud

Successfully argued for pretrial diversion for our client despite allegations of wire fraud and PPP loan fraud of close to three million dollars in the Northern District of Illinois.

Deferred Prosecution in Domestic Violence Matter

Argued for deferred prosecution in a domestic violence matter in Cook County Circuit Court. The case was successfully dismissed.


  • Boston University School of Law, J.D.
  • University of Illinois Urbana-Champaign, B.A.

Bar Admissions

  • Illinois
  • California