股票类型RSU在Google，RSUs需要遵循4年归属时间表：
25% 归属于 1st-年 (6.25% 每季度)
25% 归属于 2nd-年 (6.25% 每季度)
25% 归属于 3rd-年 (6.25% 每季度)
25% 归属于 4th-年 (6.25% 每季度)
Google commonly refers to RSU as GSU (Google Stock Unit). Although the name is different, it is the same as RSU's. Google's Vesting Schedule may vary between monthly and quarterly vesting depending on the number of shares you recieve: less than 32 GSUs (Annually), 32 - 63 GSUs (Semi-annually), 64 - 159 GSUs (Quarterly) and 160+ GSUs (Monthly).