(CNN) -- Five top executives of Insys Therapeutics maker of Subsys, a version of the extremely powerful synthetic opioid fentanyl, were found guilty Thursday on federal racketeering charges for bribing doctors to prescribe the painkiller to people who didn't need it.
They were also convicted of defrauding Medicare and private insurance.
The trial put on display sales tactics such as lap dances to lure doctors and a company vice president who dressed as a Subsys bottle and rapped during a company promo.
The jury took 15 days to reach its verdict against the executives, including founder and one-time billionaire John Kapoor.
Besides Kapoor, the defendants were Richard Simon, 48, the former national director of sales; Sunrise Lee, 38, a former regional sales director; Joseph Rowan, 45, a former regional sales director; and Michael Gurry, 55, the former vice president of managed markets.
Kapoor, 76, and the other four could be sentenced to up to 20 years in prison. He remains out on bail.