Martin Shkreli, the former drug company CEO and hedge fund operator colloquially known as “Pharma Bro,” pleaded not guilty Monday to a conspiracy charge, Reuters reported.Both Shkreli and his lawyer were arrested last December and charged with scheming to steal money from Retrophin Inc., the pharmaceutical company Shkreli ran, and plotting to defraud investors. Investigators said he planned to use the stolen money to cover up losses in one of the hedge funds he operated, and that he misled potential investors by hiding his ownership of the company’s stock. Shkreli, 33, has pleaded not guilty to seven criminal counts of securities fraud...