1099-B on vested Long Term Incentive Plan (LTIP)

Hi,

 

In 2021, I received 500 shares of stock as part of LTIP and the broker that holds my shares sold 200 shares to pay for taxes (State, Fed, and Medicare taxes). The broker sent me 1099-B form but list the proceed as Gross Proceeds reported to IRS but didn't list any tax withheld. Turbo Tax does have a form to list this but how do I report on my tax return? Should I list all 500 shares or just the shares the broker sold to cover taxes? And according to my W-2 box 12(a-d), it doesn't list LTIP shares as income reported on my W-2. In effect, I still have 300 shares but I haven't gain any cash value from them yet. Please help if you can.

 

Thanks,