Vesting date

An Employee Stock Ownership Plan (ESOP) does not usually hand an employee shares on day one. The right to buy is granted first, and only becomes exercisable later — often in stages. The vesting date is when that right actually opens up.

The workbook is clear that the right may vest fully or partially over what it calls the vesting period, so a single ESOP grant can carry several vesting dates rather than one.

The workbook's own worked illustration: "an employee is given 1000 options on 31st March, 2016 which can be exercised in phases like 30% on completion of one year, 30% on completion of second year and the balance on completion of the third year from the date of such grant."

Worked through: 1,000 options granted on 31 March 2016. On 31 March 2017 (one year), 300 options (30%) vest. On 31 March 2018 (two years), a further 300 options (30%) vest. On 31 March 2019 (three years), the balance of 400 options (40%) vests. By the third anniversary of the grant, all 1,000 options have vested, in three separate tranches on three separate vesting dates.

The workbook also notes that the option can generally be exercised only after a lock-in period, generally more than one year — consistent with the first vesting tranche in the example falling exactly at the one-year mark.

Ms Priyanka Nair, a software engineer at Deccan Software Ltd, is granted 1,000 stock options on 31 March 2016 under the company's ESOP scheme, exercisable at a fixed price of Rs 150 per share, vesting 30% / 30% / 40% over three years exactly as the workbook's illustration describes.

On 31 March 2017, 300 options vest and become exercisable. Illustrative share price, not from the workbook: if Deccan's shares are then trading at Rs 220, Ms Nair could exercise those 300 options for a gain of Rs 70 per share (Rs 220 − Rs 150), or Rs 21,000 before tax, if she chooses to exercise immediately — though she is free to wait, since vesting only opens the right to exercise, it does not force her to use it.

On 31 March 2018, a further 300 options vest. On 31 March 2019, the final 400 vest, completing the grant. Each tranche is a separate vesting date with its own exercise decision, even though all 1,000 options were granted on the same day three years earlier.

Chapter 2 (Introduction to Securities Markets), in the discussion of Employee Stock Ownership Plans among other equity-linked instruments, defines vesting date directly and gives the 1,000-option, three-tranche worked illustration. Expect a straightforward definitional question, and occasionally a numeric question applying a stated vesting schedule to a given option count.

• Grant date, vesting date and exercise date are three different dates. The grant date is when the options are awarded; the vesting date is when the right to exercise opens up; the exercise date is whenever the employee actually chooses to use that right, which can be any time after vesting.
• Vesting can be partial and staggered — the workbook's own example vests in three unequal tranches (30% / 30% / 40%), not a single all-at-once vesting date.
• The lock-in before the first vesting is described as "generally more than one year" — treat it as typical practice from the workbook's example, not a fixed statutory minimum stated in this chapter.
• Vesting only creates the right to exercise — it does not force the employee to buy the shares, and does not by itself create any tax event.