Example: A company issues an employee 200 shares upon starting with the firm, 100 shares after 3 months and 100 shares after 9 months. At the one year point, the employee has 400 shares. Assuming a 1 year cliff and a 4 year total vesting period how many shares have vested after 12 months? Is it simply 400/4=100 or does the 4 year vesting period restart for each issuance? (I know it depends, but typically what is the answer)