<sod >Ã¢ÂÂ The lawsuit charged a former chairman of Dean Foods Co and a professional Las Vegas gambler with engaging in a years-long insider trading scheme, which included a tip that benefited the professional golfer, Reuters said.< eod>< sod > The complaint filed by the SEC in US District Court for the Southern District of New York, charged a former chairman of Dean Foods Co and a professional Las Vegas gambler with engaging in a years-long insider trading scheme, which included a tip that benefited the professional golfer, Reuters said.< eod>