What Happens to ESOPs When a Startup Gets Acquired or Goes Public

The ESOP conversation in most Indian startups ends at grant, vesting, and exercise. The far end of the equity journey what actually happens to the shares and the unexercised options when a company is acquired or lists on a stock exchange is rarely discussed in detail until the event is imminent. By that point, founders are deep in transaction negotiations with limited bandwidth to educate their team on what is about to happen to their equity.

This guide covers both exit scenarios in detail: acquisition (full buyout and acqui-hire) and IPO (initial public offering). For each, it explains what happens to vested and unvested options, to already-exercised shares, to unissued pool options, and to employees who joined at different stages. It includes worked rupee examples, covers the negotiation points that determine employee outcomes, and identifies the risk scenarios that employees rarely anticipate. The goal is to give founders the information they need to explain the exit to their team honestly before the deal announcement, not after.

KEY TAKEAWAYS

• In an acquisition, the treatment of ESOPs is entirely negotiated the default is not always employee-friendly, and the outcome depends on how the ESOP provisions are handled in the definitive agreement.
• Vested options can be accelerated (exercise immediately before closing), assumed (converted to acquirer equity), or cancelled with a cash payment each has different tax implications.
• Unvested options are typically accelerated only in specific good leaver / single trigger / double trigger scenarios defined in the scheme document most unvested options are cancelled in an acqui-hire.
• In an IPO, all existing shares including exercised ESOP shares become listed securities, but employees are typically subject to a lock-in period of six to twelve months post-listing.
• The unissued ESOP pool in both scenarios is typically cancelled or dissolved the value stays with the company, not with employees who held no grant from that pool.

Part 1: What Happens to ESOPs in an Acquisition

The Three Outcomes for Vested Options

When a company is acquired, the treatment of vested ESOP options is one of the most heavily negotiated points in the definitive acquisition agreement. There are three principal outcomes, each negotiated by the founder (on behalf of employees) against the acquirer:

Outcome 1: Cash-Out (Most Common in Full Buyouts). The acquirer pays the difference between the acquisition price per share and the exercise price for each vested option. The option holder receives cash equal to the spread without needing to first exercise the option. This is called a net exercise or a cashless exercise. The employee receives cash, the option is cancelled, and the shares are never formally allotted. This is the cleanest outcome for employees no exercise cost, immediate liquidity, no holding period concern.

Outcome 2: Assumption by Acquirer. The acquirer assumes the ESOP scheme and converts each option into a right to receive acquirer equity. The vested options become options or restricted stock in the acquirer company, on terms that mirror the original vesting schedule. The employee does not receive immediate cash they now hold equity in the acquiring company, with whatever liquidity that company's shares have.

Outcome 3: Exercise Before Close. The company instructs option holders to exercise their vested options before the acquisition closes. The exercised shares are then included in the acquisition as ordinary shares, and the holders receive the acquisition consideration per share (minus the exercise price they paid). This is operationally more complex it requires demat allotments, potentially PAS-3 filings, and TDS processing before the close but it is sometimes used when the acquirer does not want to assume the ESOP scheme.

EXAMPLE :

Cash-Out vs Assumption in an Acquisition

Company acquired at Rs 500 crore.

Implied per-share price: Rs 250.

Employee holding: 2,000 vested options, exercise price Rs 30 per share.

Outcome A Cash-Out:

Cash received: (Rs 250 - Rs 30) x 2,000 = Rs 4,40,000

Tax: Perquisite at exercise (spread Rs 220 x 2,000 = Rs 4,40,000) taxed at 30% slab

Tax payable: Rs 1,32,000

Net after tax: Rs 3,08,000

Advantage: No capital out-of-pocket; immediate liquidity at acquisition close.

Outcome B Assumption (acquirer is a listed company):

Options converted to 2,000 acquirer restricted stock units (RSUs) vesting over 2 years

No immediate cash; no immediate tax event

When RSUs vest and are sold: taxed as equity compensation under acquirer's country's tax rules

Advantage: Potential for upside if acquirer's stock price rises; disadvantage: no liquidity until RSUs vest and can be sold.

Which is better? Depends entirely on the employee's financial situation, the acquirer's stock quality, and the acquisition premium. There is no universal answer founders should present both scenarios with real numbers before employees must decide.

What Happens to Unvested Options in an Acquisition

Unvested options options that have not yet vested under the employee's schedule are the most contentious element of ESOP treatment in an acquisition. The default position in most acquisition agreements is that unvested options are cancelled. The acquirer does not want to assume an obligation to future employees who may not stay with the combined entity.

Three mechanisms can modify this default, and their presence in the scheme document and acquisition agreement determines whether long-tenured employees who are still mid-vest receive anything for their unvested equity:

• Single trigger acceleration: All unvested options vest immediately upon a change of control (the acquisition), regardless of whether the employee continues with the acquirer. This is the most employee-friendly provision and the hardest to negotiate with acquirers who want employee retention incentives to remain.
• Double trigger acceleration: Unvested options accelerate only if two events occur the change of control AND the employee's subsequent departure or termination within a defined period (typically 12–24 months). This protects employees from being fired post-acquisition without vesting benefit, while giving the acquirer the retention incentive of the unvested equity.
• No acceleration clause: Unvested options are cancelled at acquisition. If the acquirer offers replacement equity, it is on their own terms and timeline. Employees who were 18 months from full vesting at acquisition receive nothing for that unvested portion.

WARNING: Most Indian Startup ESOP Schemes Have No Acceleration Clause

The majority of Indian startup ESOP scheme documents particularly those created before 2022 do not include an explicit acceleration clause for change of control events. This means that at an acquisition, unvested options are cancelled by default.

For a senior employee who joined three years before an acquisition with a 4-year vest/1-year cliff schedule, this means they receive full value for their 3 years of vested options but lose the unvested options for the final year even though the company's success that generated the acquisition was built in part on their contribution.

Founders who want to protect their employees in an acquisition outcome should explicitly include a double trigger acceleration clause in the scheme document before or at the next scheme amendment. Adding it retroactively for a live scheme requires board and shareholder approval but is achievable.

The Acqui-Hire: The Worst Outcome for ESOP Holders

An acqui-hire is an acquisition where the acquirer is primarily buying the founding team and/or key employees, not the product or the company as a standalone business. In an acqui-hire, the acquisition price is typically low sometimes at or near the aggregate exercise price of all outstanding options because the acquirer is not paying for product value. The economics for ESOP holders are often deeply unfavourable.

In an acqui-hire, the common outcome is: the acquirer pays a headline number that is used to satisfy investor liquidation preferences (investors typically have preference shares that receive their investment back first). Once investor preferences are satisfied, any remaining consideration is distributed to ordinary shareholders which may include some ESOP holders who exercised. Unvested options are cancelled. Unexercised vested options may receive little or nothing if the acquisition price is at or below the preference liquidation waterfall. Employees who held options believing they were worth something often discover they are worth nothing or very little in an acqui-hire.

The Liquidation Waterfall: Why ESOP Holders Are Not Always Last But Often Get Less

In any acquisition, the proceeds are distributed according to a liquidation waterfall the order in which different classes of shareholders receive their consideration. For Indian startups that have raised institutional funding through CCPS (Compulsorily Convertible Preference Shares), the waterfall typically looks like this:

• Investors (CCPS holders) receive their liquidation preference. This is typically 1x the amount invested, sometimes with accrued returns. In a downside acquisition, investors may receive their full investment back before ordinary shareholders receive anything.
• Remaining consideration is distributed pro-rata to all shareholders founders, angels, and ESOP holders who have exercised their options into ordinary shares.
• Unexercised options receive the in-the-money spread (if the acquisition agreement provides for cash-out) or are cancelled.
• Unvested options are cancelled (unless an acceleration clause applies).

WORKED EXAMPLE Liquidation Waterfall in a Moderate Exit

Company: Series A startup, Rs 10 crore raised at Rs 40 crore pre-money

Acquisition price: Rs 60 crore (Rs 20 crore above post-money valuation)

Fully diluted shares: 1,00,00,000 (1 crore)

Implied per-share price at acquisition: Rs 60

Capital structure:

• CCPS (investor, 20% post-money): 20,00,000 shares | Liquidation preference: Rs 10 crore (1x invested)
• Ordinary shares (founders + angels, 72%): 72,00,000 shares
• ESOP pool (8%, partially exercised): 8,00,000 shares (4,00,000 exercised as ordinary shares; 4,00,000 as outstanding options)

Waterfall:

Step 1: Investor liquidation preference: Rs 10 crore paid to CCPS holders

Remaining for distribution: Rs 60Cr - Rs 10Cr = Rs 50 crore

Step 2: CCPS converts to ordinary shares for pro-rata participation

Total ordinary + exercised ESOP shares: 72,00,000 + 20,00,000 + 4,00,000 = 96,00,000 shares

Per-share amount from remaining Rs 50 crore: Rs 52.08 per share

Step 3: Unexercised vested options cash-out at (Rs 52.08 - exercise price) per option

ESOP holder with 800 exercised options (treated as ordinary shares):

Receives: 800 x Rs 52.08 = Rs 41,664

ESOP holder with 1,200 unexercised vested options (exercise price Rs 20):

Cash-out value: (Rs 52.08 - Rs 20) x 1,200 = Rs 38,496

Negotiating ESOP Provisions in an Acquisition What Founders Can Push For

Push 1: Full Cash-Out for All Vested Options at Acquisition Price

The cleanest outcome for employees. Every vested option is cashed out at the acquisition per-share price minus the exercise price, without requiring employees to first exercise and fund the exercise cost. This is the standard in most venture-backed acquisitions where the acquirer is buying a successful company it is less available in distressed or acqui-hire situations where there is limited acquisition consideration to distribute.

Push 2: Double Trigger Acceleration for Unvested Options

If the acquirer insists on retaining unvested options as a retention incentive, negotiate a double trigger clause: if the employee is terminated without cause within 18–24 months of the acquisition, all unvested options vest immediately. This protects employees who are retained initially but then let go as the combined entity restructures, which is the most common pattern in post-acquisition integration.

Push 3: Retention Bonus for Key Employees Not Covered by Unvested Equity

For employees who are fully vested at acquisition and therefore have no remaining unvested equity to serve as a retention incentive negotiate a cash retention bonus tied to continued employment for 12–24 months post-acquisition. This is often more achievable than extending the vesting schedule, and it addresses the specific retention risk for the employees the acquirer actually cares most about keeping.

Push 4: Extended Exercise Window for Existing Vested Holders

If employees are not being immediately cashed out, negotiate an extended exercise window giving employees adequate time to evaluate whether to exercise and participate in the acquisition proceeds versus letting their options lapse. A 90-day window is standard; 180 days is more generous and more appropriate for complex acquisition structures where the tax implications need time to be properly assessed.

Part 2: What Happens to ESOPs at an IPO

The Core Mechanics

When a company goes public through an IPO on BSE or NSE, all existing shares including shares that employees have acquired by exercising their ESOP options become listed securities. The IPO price per share determines the value at which all existing shareholders' holdings are priced at listing.

For employees who have already exercised their options and hold shares, the IPO is a liquidity event: their shares, previously illiquid and unlisted, become tradeable on the stock exchange. However, this tradability is subject to a lock-in period that prevents immediate selling.

The Lock-In Period

SEBI regulations require that certain categories of shareholders observe a lock-in period after an IPO during which they cannot sell their shares. For ESOP holders, the applicable lock-in under SEBI (ICDR) Regulations depends on whether the shares were allotted within one year before the IPO date. Generally, shares allotted under ESOP within one year of the IPO filing date are subject to a one-year lock-in from the IPO listing date. Shares allotted more than one year before the IPO are not subject to this additional lock-in (though they may be subject to the standard promoter/pre-IPO investor lock-in if the employee is classified as a promoter).

For most employee ESOP holders who are not founders or key management, shares exercised more than a year before the IPO are freely tradeable from listing day. Shares exercised within a year of the IPO are locked in for one year post-listing.

What Happens to Unexercised Vested Options at IPO?

An IPO does not automatically exercise outstanding options. Employees who hold vested but unexercised options at the time of IPO must exercise those options to participate in the listing liquidity. They can exercise at any point during the exercise window (which continues as defined in the scheme), but any options not exercised before the IPO cannot be included in the public offering.

For DPIIT-eligible employees who exercised pre-IPO: the DPIIT deferral expires at the earlier of five years, departure, or sale. An IPO and subsequent sale of shares after listing constitutes a sale the DPIIT deferral expires when the employee sells post-IPO. The perquisite tax from the original exercise becomes due at that point.

What Happens to Unvested Options at IPO

Unlike an acquisition, an IPO does not trigger any default acceleration of unvested options. The vesting schedule continues post-IPO exactly as it was pre-IPO. An employee who was 18 months into a 4-year vest at the time of IPO continues vesting for the remaining 30 months under the same schedule. The only change is that when they eventually exercise those options, the shares they receive are listed securities tradeable on the exchange (subject to any lock-in).

Some ESOP schemes include a pre-IPO exercise window a period before the IPO filing date during which all vested options must be exercised (or a special exercise opportunity is offered). This simplifies the cap table at IPO by converting all vested options to shares before the listing, rather than having outstanding options on a listed company's register. Founders planning an IPO should review their scheme document for whether a pre-IPO exercise provision exists and communicate the timeline clearly to employees well in advance.

Risks That Employees Rarely Anticipate

Risk 1: The Liquidation Preference Wipes Out ESOP Value

In an acquisition where the headline price sounds impressive but investor liquidation preferences consume most of the consideration, ESOP holders may receive far less than the headline price implies. An acquisition at Rs 80 crore sounds like a significant exit. If the company has Rs 60 crore in preference liquidation obligations from three rounds of funding, ordinary shareholders including ESOP holders divide Rs 20 crore, not Rs 80 crore. At a 10% ESOP pool ownership, that is Rs 2 crore for all employees combined, not Rs 8 crore.

Risk 2: The Post-IPO Lock-In Creates a Forced Hold

An employee who exercised options one month before the IPO filing date is locked in for a full year after listing during which the share price may fall significantly from the listing price. An employee who exercised the same options 13 months before the filing date has no lock-in and can sell on listing day. The timing of exercise relative to the IPO filing date can be worth lakhs of rupees, and most employees do not know this distinction exists until it is too late to act on it.

Risk 3: The DPIIT Deferral Creates a Surprise Tax Bill at Sale

An employee who has been holding DPIIT-deferred perquisite tax since an exercise event three years ago may not fully appreciate that the deferred amount becomes immediately payable when they sell their shares post-IPO. For an employee who exercised 5,000 shares at a Rs 100 spread, the deferred perquisite is Rs 5 lakh. When they sell after IPO, they owe this Rs 5 lakh (at 30% slab = Rs 1.5 lakh tax) plus capital gains tax on the appreciation above the exercise FMV. Without advance planning, the tax bill can exceed the cash available if the employee sells only a portion of their holding.

Risk 4: Acqui-Hire Retention Packages May Not Be Comparable to Unvested Equity

In an acqui-hire, the acquirer typically offers the retained team a new compensation package including new equity grants in the acquiring company. The optics look generous 'we are offering you equity in a Rs 500 crore company'. The reality may be that the new grant, vesting over four years, is worth less than the unvested equity from the previous company that was cancelled at acquisition. Employees should have their CA model both scenarios before accepting or rejecting an acqui-hire retention offer.

What Founders Should Do Before Either Exit Scenario

Review the Scheme Document for Acceleration Clauses Now

If your scheme document does not include a double trigger acceleration clause, add one at the next scheme amendment. This is most cost-effectively done as part of a pool top-up (which already requires board and shareholder approval) rather than as a standalone amendment. Waiting until an acquisition is imminent to add this clause gives the acquirer grounds to argue that the acceleration was added specifically to benefit employees at the acquirer's expense which reduces the negotiating position.

Prepare Employee Communication Materials in Advance

Before any exit event is announced, founders should have pre-prepared communication materials that explain in plain language with specific rupee examples what will happen to each category of employee's equity. These materials should cover the three vested option outcomes, the acceleration clause status, the tax implications at sale, and the timeline for receiving proceeds. Employees who are informed before the announcement trust the process more than those who receive the information simultaneously with the deal announcement and feel they are being managed.

Model the Outcomes at Different Acquisition Prices

Before entering any acquisition negotiation, model the ESOP outcomes at the likely range of acquisition prices what do different employees receive if the deal closes at Rs 40 crore vs Rs 60 crore vs Rs 80 crore? This modelling serves two purposes: it informs the founder's own negotiating position (knowing the employee impact at each price point) and it prepares the communication for employees when the deal price is announced.

The Bottom Line

The exit event acquisition or IPO is the moment the ESOP programme either delivers on its promise or reveals how far the reality diverged from the expectation. The outcome is almost never uniformly positive for all employees. Liquidation preferences reduce proceeds for ordinary shareholders. Lock-in periods delay liquidity for post-IPO holders. Unvested options are cancelled in most acquisitions without an acceleration clause. DPIIT deferrals create tax obligations at the point of sale that employees may not have budgeted for.

Founders who understand these outcomes in advance and who design their ESOP schemes with acceleration clauses, communicate the exit mechanics honestly to their team, and model the specific rupee outcomes before negotiations begin arrive at the exit event with a team that trusts the process. Founders who discover these complexities at the term sheet stage and try to manage them under time pressure, often while simultaneously managing the deal itself, deliver a worse outcome for their employees and a harder negotiation for themselves. Prepare for the exit before it arrives.

Also Read: How ESOPs Are Taxed in India for Employees and Companies

Also Read: Complete Guide to ESOPs for Indian Startups

Frequently Asked Questions

Can employees refuse to participate in an acquisition if they do not like the ESOP treatment?

Individual employees cannot block an acquisition the decision is made at the shareholder level, where investors and founders hold the majority of votes. However, employees who hold exercised shares are shareholders and may have certain rights under the shareholder agreement (such as tag-along rights that entitle them to participate in the acquisition on the same terms as other sellers). Employees who hold only unexercised options are not shareholders and have no vote in the acquisition decision their outcome depends entirely on what the founders negotiate on their behalf in the acquisition agreement.

In an IPO, can employees sell their shares on day one of listing?

It depends on when they acquired the shares. Employees who exercised their options more than one year before the IPO filing date generally have no lock-in and can sell on listing day, subject to the standard SEBI open market trading rules. Employees who exercised within one year of the filing date are subject to a one-year lock-in from the listing date. Key management personnel (KMPs) may face additional lock-in requirements. Founders should communicate the lock-in applicability to each employee based on their exercise date well before the IPO is publicly announced.

What happens to options that are still unvested at the time the company files for an IPO?

Unvested options continue to vest on their original schedule post-IPO. An employee who is 6 months into a 48-month vest at the time of IPO will continue vesting for the remaining 42 months. When options vest post-listing, the employee can exercise them and receive listed shares which are tradeable (subject to any applicable lock-in) immediately after exercise and allotment. The company continues to operate its ESOP scheme post-IPO under the same scheme document, though SEBI's ESOP regulations for listed companies (SEBI ESOP Regulations 2014) may require certain scheme modifications.

Can a startup run an ESOP buyback as a way to provide liquidity before an acquisition or IPO?

Yes, and this is increasingly common in Indian startups approaching a Series B or pre-IPO stage. A buyback allows employees to convert a portion of their vested equity to cash before the exit event, reducing the concentration of their net worth in a single illiquid asset. A well-run buyback also gives the company useful data about employee appetite for liquidity, which informs exit planning. The buyback price must be set at or near the current FMV, and the tax implications (perquisite at exercise, capital gains at buyback) apply as described in the ESOP taxation blog.

In a share-swap acquisition (where the acquirer pays in their own shares rather than cash), how are ESOP options treated?

In a share-swap acquisition, existing shares are exchanged for acquirer shares at a defined exchange ratio. ESOP option holders who exercise and receive the company's shares before or at close then exchange those shares for acquirer shares at the same ratio. The tax treatment is complex the exchange of shares may be treated as a transfer for capital gains purposes, though certain Indian tax provisions provide relief for approved share swaps in specific structures. Employees should consult a CA before any exercise decision in a share-swap transaction.