Gannon Van Dyke faces landmark Polymarket insider trading trial

The U.S. government’s first insider trading prosecution involving a prediction market has advanced after a Manhattan court scheduled a Dec. 7 trial for Army soldier Gannon Van Dyke.

According to courtroom reporting from Inner City Press, U.S. District Judge Margaret Garnett scheduled the trial on Monday in Manhattan, where Van Dyke appeared in court after being released earlier this year on a $250,000 personal recognizance bond.

Federal prosecutors have accused the 38-year-old active-duty service member of using classified military intelligence connected to the January operation involving Venezuelan President Nicolás Maduro to place profitable wagers on Polymarket.

Court filings cited by prosecutors allege that Van Dyke made 13 Venezuela-related bets over a seven-day period beginning in late December, turning an initial investment of about $33,000 into more than $410,000.

As described in the government’s case, Van Dyke faces three counts of violating the Commodity Exchange Act, along with wire fraud and engaging in an unlawful monetary transaction. He entered a not guilty plea during his April arraignment.

Defense prepares challenge to government case

Details from the latest hearing indicate that Van Dyke’s legal team is preparing to contest the prosecution before the case reaches trial. According to ABC News, defense attorneys told the court they expect to file a motion seeking dismissal of the charges by the end of next month.

Prosecutors have also alleged that Van Dyke attempted to conceal his activity after the wagers were settled. Court documents cited by the government claim he requested the deletion of his Polymarket account following the trades.

The case has drawn attention because federal authorities have described it as the first U.S. insider trading prosecution involving a prediction market platform.

As regulators continue examining how such markets operate, the outcome could provide one of the earliest judicial tests of how existing commodities and fraud laws apply to blockchain-based event betting platforms.

Polymarket faces scrutiny beyond the courtroom

Outside the criminal proceedings, Polymarket has become the subject of growing regulatory and political attention in multiple jurisdictions.

On Capitol Hill, House Oversight Committee Chairman James Comer requested documents and internal communications from Polymarket related to wagers connected to the U.S. operation targeting Maduro.

According to reports, lawmakers are examining activity surrounding the market and the information available to participants before the event’s outcome became public.

Regulatory pressure has also emerged overseas. As crypto.news previously reported, the Gangwon Provincial Police Agency in South Korea has opened what is believed to be the country’s first investigation into domestic Polymarket users.

South Korean authorities are examining whether participation on the platform violated South Korean gambling laws after a request from the national police headquarters.

Speaking to Chosun Biz, attorney Ahn Chang-bo, who represents some of the users under investigation, said the legal elements required for a gambling offense appear to be present. At the same time, he noted that South Korea has no established legal precedent involving punishment for Polymarket users, making the final outcome difficult to predict.

Separate from the criminal charges against Van Dyke, the Commodity Futures Trading Commission has filed its own civil complaint.

CFTC Chair Mike Selig said anyone engaging in fraud, manipulation, or insider trading in regulated markets would face enforcement action regardless of ongoing debates surrounding prediction market regulation.