Vesting. You can't exercise unvested options - the company needs to have set up an early exercise option as a part of it's stock plan for this to work. But wh

Vesting. You can't exercise unvested options - the company needs to have set up an early exercise option as a part of it's stock plan for this to work. But whether they offer an early exercise program is a very good question to ask any early-stage company you're planning to join.