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The sanctions, effective from 28 August 2026 , bar Santos from any direct or indirect trading access on Kalshi.
Earlier this year, fellow prediction market platform Polymarket also ended its paid relationship with Santos amid a Department of Justice investigation over whether he had placed a wager on his appearance at the same State of Union address.
A federal judge sentenced Santos to 87 months in prison last April on felony wire fraud and check fraud charges. After Santos served several months in 2025, US President Donald Trump granted the former congressman clemency, resulting in his immediate release.
What is Stackem?
A source familiar with Raja’s gambling habits told The Telegraph he was a regular visitor to the upmarket Palm Beach Casino and Colony Club in Mayfair, one of London’s most affluent districts.
Raja was reportedly permitted to access as much as £600,000 ($800,000) a day from his bank account to finance his casino play, according to The Telegraph.
“He would play and play, drink and drink, and if he didn’t lose all his money at the Palm Beach, he would then get in a car and go around the corner to the Colony Club,” the source told the newspaper.
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For reference, Konstakis is no stranger to OpenBet’s business. He has been involved with the business for a while, serving as its president. In this role, he has been closely involved in “driving the operational and commercial execution of the business and shaping its strategic priorities.”
In his new role, Konstakis will be responsible not only for OpenBet’s strategy, but also for its day-to-day business, growth initiatives, and tech priorities. At the same time, he will be tasked with “raising the bar” in how OpenBet serves its clients.
OpenBet emphasized that this change comes at a strong moment for the company and follows its incredibly successful delivery for customers through the World Cup. Throughout the tournament, OpenBet processed 175 million bets totaling $3 billion.
