Comcast chairman and CEO Brian Roberts just sold $20.4 million worth of stock in the media giant. The circa 469.5 million Class A common shares were divested on Tuesday, according to an SEC filing. It’s not a significant part of his holdings and Deadline hears the sale is for year-end planning purposes, which is not unusual. Most of the shares sold were from awards of restricted stock units that were part of Robert’s compensation package this year, with a smaller portion from exercising options. Along with ...