Carvana shares fell more than 3% to $67.81 by 12:32 p.m. Tuesday after two directors sold company stock last week. According to Sina Finance, citing a regulatory filing Carvana submitted to the U.S. Securities and Exchange Commission on Monday, director Danforth Quayle disposed of 14,525 shares on Friday last week, and director Ira Platt disposed of 30,000 shares on Thursday last week.