Understanding Vesting, Exercise, and Lock-In in ESOPs

What founders and employees often get wrong about how ESOPs actually work

By Prashant Kumar

Introduction

Most founders proudly announce their ESOP policy. Most employees celebrate their grant letter. But very few understand what actually happens between receiving ESOPs and owning real shares.

The three core pillars of every ESOP — vesting, exercise, and lock-in — determine how and when ownership truly materialises. Misunderstanding even one can lead to tax errors, forfeited options, or disputes during exits or due diligence.

This guide explains each stage under Indian company law and highlights practical lessons from real startup advisory experience.

What Does “Vesting” Really Mean in an ESOP?

Vesting is the process by which an employee earns the right to exercise stock options over time or upon achieving milestones. It ensures that ownership is tied to contribution — not merely employment.

Under Rule 12(6) of the Companies (Share Capital and Debentures) Rules, 2014, every ESOP issued by an Indian company must have a minimum one-year vesting period from the date of grant. This is mandatory.

Most Indian startups use the 4-year vesting cycle with a 1-year cliff:

After 12 months, 25% of the options vest (the “cliff”).
The remaining 75% vest monthly or quarterly over the next three years.

For example, if an employee is granted 1,200 options, 300 vest after one year, and the rest vest evenly over 36 months. If they leave before completing a year, all unvested options lapse.

Insight
During a Series A restructuring for a fintech client, we introduced a graded vesting model — 40% time-based and 60% milestone-based. This tied ESOP value directly to business KPIs like customer retention and transaction volume. Within 18 months, performance tracking improved, and early attrition dropped significantly.

The Exercise Stage: Turning Options into Ownership

Once options have vested, the employee gets the right — not obligation — to “exercise” them by paying the exercise price to acquire equity shares.

This stage legally transforms an “option” into an actual shareholding.
The exercise window (typically 30 to 180 days post-vesting or exit) is critical. Missing this window means losing vested rights.

Exercise prices in Indian startups usually range from nominal face value (₹10 or ₹20 per share) to FMV-linked prices, depending on valuation strategy.

Case Snapshot
A Delhi-based SaaS company we advised offered employees a 6-month post-exit exercise window instead of the typical 90 days. This minor policy revision greatly reduced anxiety among mid-level employees and improved the perceived fairness of the ESOP scheme.

What Happens Legally During Exercise

When an employee exercises vested ESOPs:

The company issues new shares, increasing its paid-up capital.
The employee becomes a legal shareholder, gaining voting and dividend rights.
The company must file Form PAS-3 (Return of Allotment) with the Registrar of Companies (ROC) within 30 days, attaching valuation and allotment details.

At this stage, taxation is triggered under Section 17(2)(vi) of the Income Tax Act, 1961.
The difference between Fair Market Value (FMV) (certified by a merchant banker) and the exercise price becomes a taxable perquisite.

For DPIIT-recognised startups, this perquisite tax can be deferred for up to 48 months, until the employee sells the shares or leaves the company — whichever comes first.

Regulatory Note
The deferred taxation benefit applies only if the startup is DPIIT-registered and recognised under Section 80-IAC of the Income Tax Act. Regular unlisted companies cannot defer TDS and must deposit it at the time of exercise.

Lock-In: Why Shares Aren’t Immediately Tradable

After exercise, shares may still be locked in for a certain period before they can be sold or transferred.
A lock-in period protects the company’s shareholding stability and prevents premature dilution.

Unlisted Indian startups commonly impose 1–3 year lock-ins after exercise or until a liquidity event (funding, buyback, or acquisition). The goal isn’t restriction — it’s alignment.

“ESOPs are designed to make employees think like owners — but ownership without patience defeats the purpose.”
— Prashant Kumar, Partner, Pratham Legal

Regulatory Note
The Companies Act, 2013 does not mandate a lock-in period for unlisted companies, but Rule 12(7) allows flexibility for companies to define one in their ESOP scheme or grant letters.
For listed entities, SEBI regulations specify a one-year lock-in post-exercise for certain share categories.

Common Mistakes Founders and Employees Make

Many ESOP complications arise not from bad intent, but from misunderstanding the timeline between grant and liquidity. Some recurring issues include:

Treating grant as ownership before vesting occurs.
Missing exercise windows, causing vested options to lapse.
Ignoring PAS-3 filings after allotment.
Misaligned valuation certificates between MCA and income tax filings.
Overlooking tax deferral eligibility for DPIIT startups.

Advisor’s Corner
In a growth-stage startup we reviewed, over 25% of granted ESOPs had expired unnoticed because employees were unaware of the exercise deadline. The company’s ESOP register still listed them as active, causing cap table discrepancies during due diligence. Rectifying it required extensive MCA updates and auditor confirmations.

Best Practices for Founders and Boards

Communicate clearly: Every grant letter should define vesting, exercise, and lock-in timelines.
Align ESOP policy with liquidity planning: Plan buybacks or secondary windows well in advance.
Ensure valuation parity: FMV used for taxation and for PAS-3 filings should match to avoid scrutiny.
Educate employees: Regular ESOP sessions demystify ownership, tax, and exit processes.
Review annually: Revisit vesting and lock-in conditions after major funding rounds.

When these elements align, ESOPs become not just motivational tools but governance assets.

For More Clarity, See Our Related Articles

Conclusion

Vesting, exercise, and lock-in aren’t just legal terms — they form the heartbeat of an ESOP.
Each stage defines how ownership is earned, realised, and eventually monetised.

For founders, understanding this sequence ensures compliance and clarity.
For employees, it bridges the gap between promise and payoff.

In a maturing Indian startup ecosystem, transparent ESOP structures build not just wealth — but trust.

About the Author

Prashant Kumar is a Company Secretary, Published Author, and Partner at Pratham Legal, a full-service Indian law firm advising on corporate, regulatory, and transactional matters.

He is a subject matter expert on ESOP design, implementation, and exit strategy, having advised numerous Indian and cross-border startups on ESOP compliance, valuation, and taxation under the Companies Act, 2013 and Income Tax Act, 1961.

He can be reached for ESOP and equity structuring consultations at:
📞 +91-9821008011
📧 prashant@prathamlegal.com