SusanY1
Expert Alumni

After you file

Yes, if the stocks were from a grant the cost basis is the stock value on the date of the grant.  This was likely included as income on your W-2 at that time, which gives us your basis in the stock.  Your W-2 from the year of the stock grant should contain the information that is necessary to prove that basis, should you be asked at a later date. 

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