The Wall Street Journal reported that the SEC filed insider trading charges against Mark Cuban (owner of the Dallas Mavericks basketball team): SEC Charges Mark Cuban With Insider Trading. You can read the full text of the complaint against Mark Cuban.
According to the complaint, Cuban owned 600,000 shares in Mamma.com Inc. (now called Copernic Inc.), whose shares are trded on NASDAQ. Cuban was told of an upcoming PIPE transaction. News of the transaction would likely have a substantial negative impact on the stock of the company. On the day prior to the announcement, Cuban sold all of his shares in the company and avoided losses in excess of $750,000.