I hear FB is every 3 months and zendesk/snap are monthly. Any others come to mind?
Why not? You work every day in increments. Doing it yearly is usually to try keep people around. But anyone halfway smart knows it's worse to have people around who don't want to be around than to let them go.
Microsoft is every 3 months
But only after the first year.
Amazon 6 months after first 2 years
Oracle is every year...
Wayfair every 3 months
Snap is every month
Apple every 6 months
Vest Schedule can be daily if you get 0.
G is monthly depending on the grant size
IIRC the grant has to be like 250k to get monthly so it's easy to get for your sign on grant but harder for refreshers. They should really recast the vest schedules because the limits are in share counts and we're computed when the price was lower; the goal was simply you should vest an entire share after tax each vest event.