>Or they could sell some of the shares in the multibillion-dollar secondary market when they exercise to pay for the taxes.
Effectively you can't unless the startup allows for it. I have stock and when I tried to sell on the secondary market exchanges all said that there's a lot of interest but due to the company always exercising right of first refusal no one will bother.
Effectively you can't unless the startup allows for it. I have stock and when I tried to sell on the secondary market exchanges all said that there's a lot of interest but due to the company always exercising right of first refusal no one will bother.