Renato Mariotti

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Renato Mariotti
Occupation Partner
Employer Thompson Coburn LLP
Location Chicago, IL

Renato Mariotti is a partner at the law firm Thompson Coburn LLP.

A former federal prosecutor, Mariotti currently represents a diverse group of clients in many types of high-stakes litigation, including securities class actions, derivative-related claims, and cybertheft.

Before joining Thompson Coburn, he was a federal prosecutor in the Securities and Commodities Fraud Section of the United States Attorney's Office. In that role, Mariotti was best known as the lead prosecutor in United States v. Coscia, the nation's first federal prosecution of a high-frequency trader for order entry and the first prosecution nationwide under the anti-spoofing provision of the Dodd-Frank Act.

He has also successfully defended the constitutionality of the spoofing and commodity fraud statutes. [1]

He was a candidate for Illinois Attorney General in 2017-2018 but lost to State Senator Kwame Raoul.

He is a legal analyst on CNN.


During his nine years at the U.S. Attorney's Office for the Northern District of Illinois, Mariotti tried more than a dozen criminal cases and prosecuted a wide array of white-collar crimes. He has argued numerous appeals before the United States Court of Appeals for the Second, Seventh, and Ninth Circuits.

Before he became a federal prosecutor, he practiced antitrust and securities litigation at a large law firm. He was part of the trial team in the then-largest civil antitrust class action in U.S. history.


Mariotti earned a bachelor's degree in political science from the University of Chicago in 1998 and a J.D. degree from Yale Law School in 2001.[2]


Mariotti sat for an interview with John Lothian News for a special report about spoofing in 2020.

John Lothian News Articles[edit]

A “Computer Guy From Naperville”: Closing Arguments in US v Thakkar

Closing arguments in the trial US v Thakkar took place Monday in a long morning for the jury, lasting about three hours. After the charge of conspiracy to spoof was dismissed by Judge Gettleman last week, Jitesh Thakkar still faces two charges of aiding and abetting the commission of a crime, for two separate occasions, February 25 and March 8, 2013.   

Read More

Defense rests in a “thin” case against Jitesh Thakkar

In a move that surprised the courtroom, the defense in the trial of U.S. v Jitesh Thakkar rested its case shortly before 1:00 p.m. on Thursday afternoon. Thakkar’s attorney, Renato Mariotti, had called no witnesses in his defense.

Read More

Data Day in the case of U.S. v. Jitesh Thakkar

In an abbreviated third trial day, the U.S. Department of Justice rested its case against Jitesh Thakkar and Edge Financial Technologies. Thakkar is on trial for allegedly facilitating the criminally fraudulent spoofing trading of Navinder Sarao, who pleaded guilty to two criminal counts related to his spoofing of E-mini S&P futures in the first half of this decade.  

Read More

US v Thakkar: “MasterChief” Day

The second day in US v Jitesh Thakkar and Edge Financial Technology began Tuesday morning with defense attorney Renato Mariotti’s cross examination of Navinder Sarao, the prosecution’s headline witness. Sarao, a cooperating witness, is awaiting sentencing for convictions on two criminal charges in a separate case, which could include up to 30 years jail time. The government is waiting to see how cooperative (effective?) Sarao turns out to be as a supporting player on Team USA and will condition his sentencing recommendations on his cooperation. Finishing up a few hours of cross examination, Mariotti struggled a bit to flesh out Sarao’s role as the mastermind. Sarao, for his part, struggled not to show impatience with the tedium of these proceedings that are so important for him and his prospects for freedom. Thakkar, the defendant, took notes and looked on.

Read More

US v. Jitesh Thakkar: An Exercise in Justice

April 1, 2019 was the first day in the criminal trial U.S. v Thakkar, in which the government charges that Jitesh Thakkar aided and abetted spoofing in a manipulative and deceptive scheme carried out by another person. It is a serious allegation and everyone is taking it seriously. There are four prosecuting and three defending attorneys. If things run as scheduled, yesterday was just the first of a half-dozen or so days of testimony and arguments as the Federal Government endeavors to right the wrongs allegedly perpetrated by Jitesh Thakkar, president of Edge Financial Technologies, a software development firm that programs applications for the trading industry.

Read More


  1. Renato Mariotti. Thompson Coburn.
  2. Renato Mariotti.
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