> As to why they don't allow everyone to be monthly - it's probably because they get to claw back a fair amount of the equity if people leave. I may be being a

> As to why they don't allow everyone to be monthly - it's probably because they get to claw back a fair amount of the equity if people leave. I may be being a little cynical, but if you vest annually or bi-annually you can get a pretty good idea of when your employees are going to leave and use that to plan your crunch periods accordingly. People are rather unlikely to quit the month before the annual vesting date.