"The co-founders, former BitMEX CEO Arthur Hayes, Benjamin Delo and Samuel Reed, and former head of business development Gregory Dwyer, previously pled guilty to one count of violating the Bank Secrecy Act related to failure to maintain anti-money laundering and know-your-customer programs," the report said on Friday, adding that prosecutors had accused the co-founders of using BitMEX as a "money laundering platform" and that withdrawing from the U.S. market was "a sham."