you did not buy a shares of a corporation. you bought units of a partnership though it's traded on a stock exchange and therefore you report your pro-rata share of partnership items as reported on the k-1. you will receive a k-1 every year including the year of sale. in the year of sale post back because you will most likely need help in properly reporting thee disposition. you need your adjusted tax basis which the broker does not have. the 1099-B will report as cost what you paid originally but will not report this to the iRS.
