[Cederfjard]

I think you’re assuming that it’s the value that’s variable, and not the units of stock. That already from the beginning the company has decided on how much stock to give in terms of units, not dollar value.

But the point that’s being made (as I understand it) is that certain companies, including Amazon, first decide on a dollar value, notify the employee of that value, and then later grant the commensurate number of stock units based on the price at that later time.