Chiasson made about $10 million in illegal profits for Level Global by trading on Nvidia insider information, the DOJ said.
In addition to the prison term, Newman was also ordered to forfeit $737,724 and to pay a $1 million fine.
Chiasson, of New York, was convicted of one count of conspiracy to commit securities fraud, and five counts of securities fraud. He is scheduled to be sentenced May 13.
Tortora, Goyal, Kuo and Adondakis have pleaded guilty to securities fraud charges and await sentencing.
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