which tax forms do you file for restricted stock units?

I need to start this with the caveat that my expertise is financial reporting, not tax. But here's my understanding of tax reporting for RSU's:

RSU's are reported as taxable income when they vest. The amount of taxable income is the number of shares vesting multiplied by their fair market value on the vesting date. Many RSU grants are subject to a repurchase right by the company at the grant date value. The lapsing of this repurchase right is equivalent to vesting in the stock.

The taxable income is reported on the W-2 for employees and on a 1099 for non-employees.