Hard to believe this happened. A Broker transferred stock from my deceased Step Father to my deceased Mother(I am the Executor), then one week later, realized it was an' illegal' transfer that should never have been done, so reversed the entire transaction as if it never happened. The Estate just received a 1099B for selling the stock. How do I correct this. If the Estate could not own this stock legally, how could the Estate have sold it? The Broker claims that my Mother was not the beneficiary of the stock, even though they were the ones who decided to transfer it to her initially. It was their error, and I believe they are not willing to admit it because of concerns about SEC laws. Will this affect the Estates taxes. Value is about $30,000. Total Estate value only about $60,000.