If this was employee stock, or inherited stock, yes, you have to get the value somewhere else.
If employee stock, it was the cost you paid for the stock when you purchased/were awarded it. This should be on your employer records or forms regarding the vesting of your stock.
If inherited stock, it would be the FMV on the date of death of the grantor.
Here's more info on Cost Basis of Employee Stock and Finding a Stock Cost Basis.
**Say "Thanks" by clicking the thumb icon in a post
**Mark the post that answers your question by clicking on "Mark as Best Answer"
