Similarly , in the event of a liquidation of EchoStar , holders of shares of EchoStar Class A common stock , EchoStar Class B common stock and the EchoStar Tracking Stock are entitled to receive their respective proportionate interests in the net assets of EchoStar , if any , remaining for distribution upon liquidation , pro rata based upon the aggregate market value of outstanding shares of the EchoStar Tracking Stock ( determined by an independent appraisal to the extent such shares are not then listed or quoted on any U.S. national or regional securities exchange or quotation system ) as compared to the aggregate market value of outstanding shares of EchoStar Class A common stock and EchoStar Class B common stock .