Key TakeawaysWarren Buffett's Berkshire Hathaway sold off more of its stake in Bank of America, and no longer will have to report that information in a timely manner.Berkshire sold 9.5 million shares over three days at an average price of around $40.Buffett began shedding Bank of America stock in mid-July. Warren Buffett's Berkshire Hathaway (BRK.A) won't have to report its transactions in Bank of America (BAC) stock promptly anymore. That's because Buffett continued his recent selloff of Berkshire's holdin ...