Hmmm. On the Restricted Stock Unit Sale Results page, I show a cost basis of $1,706 while your screen showed a cost basis of $1,093.06. Other than that, I get the same Forms entries and the same Federal Review issue.
Aha! I see what has happened. You did not have any shares withheld for taxes. More correctly, it is shares withheld in lieu of taxes. This happens when a private company has no current market for their shares. You did have shares sold for taxes. So enter 0 shares withheld.
The call for 1 additional share information was because you had 5 shares to start with and told TurboTax that you both sold 3 shares and withheld 3 more shares, totaling 6 shares.
