I've sold vested RSU shares and they are reported in a 1099-B. Why doesn't my 1099-B report how many shares were held for tax paying purposes?

[subrebost2020]

All of my vested RSU shares were sold and converted to cash.  I know tax was withheld since I have less than the total number of shares x market price at settlement.  Unfortunately the 1099-B mentions $0 taxes under Box 4 (Federal Income Tax Withheld).  Where can I find the number of shares held for paying taxes on a 1099-B?

[NCperson]

it doesn't work that way....

1) the RSU vested and were given to you in the form of shares.  The income was reported in your W-2 and shares were sold to pay the taxes, which is also in your W-2.   Nothing special to put into Turbo tax - it's all in your W-2

2) then you have shares which have a cost basis based on the price at the time the RSU's converted into shares.  Your broker or your employer should know that number

3)  then you sell the shares and that is reported on 1099-B.  You will report the sales price on those shares and compare it to the cost basis from #2 above..... that will determine your gain or loss.  there was no taxes withhold on this transaction (that is typical). 

the point is nothing that occured in #1 has anything to do with #3. does that make sense? 

[subrebost2020]

Yes, thank you.  That makes sense.  I found the trade confirmation document that mentions the number of shares kept for tax purposes.