"I assume the taxes withheld would also be reported on the W-2 and we shouldn't expect a separate 1099-B from the broker?"
If the employer sold some of your shares to cover the tax withholding, normally you'll receive a 1099-B. The withheld tax amount will be reflected on the W-2.
**Answers are correct to the best of my ability but do not constitute tax or legal advice.
