Ask HN: Snapchat employee vesting schedule

After the first year 10% vests; by the end of the second year, another 20% has vested in gradually increasing allotments; another 30% vests through the course of the third year. The final 40% vests through the fourth year.

Source: https://www.theinformation.com/loyalty-pays-off-for-snapchat-employees?shared=73eee1