RSU shares traded/withheld for taxes but no 1099-B issued

I see in etrade multiple RSU lots vested and each shows award shares / shares traded / shares issued. the tax payment method is Withhold Shares. It is reported in W2, but I did not get a 1099-B from eTrade, so my tax liability is high. How do I report this if I didn't get a 1099-B so I can report the cost basis correctly to lower my taxes??