Dell Computer Chief Executive Michael Dell sold 4.16 million shares of stock in the personal computer company last Thursday, a U.S. regulatory filing Monday showed. The filing, which was made with the Securities and Exchange Commission, also showed that another 1.36 million shares were sold by his spouse while a trust for their children also sold 4.48 million shares. The shares were sold at prices ranging from $28.67 to $29.09 each, the SEC filing showed. Read the SEC filing here.