Context: My mother passed away a few years ago. Last year in 2019, we were notified about unclaimed property belonging to my mother in Illinois. Upon filing a claim, I quickly sold the few shares of stock that was included. The 1099B I received doesn't have anything for box 1e.
1) Should the cost basis be the stock price at the time of my mother's passing?
2) If so, how should I notify the IRS of this?
