What Are Tag-along Rights? A Complete Guide for Founders and Investors

Key takeaways

• Tag-along rights give minority shareholders an exit path by entitling them to sell on the same price and terms when a majority shareholder sells their stake in the company.
• The right is protective, not compulsory. Minority shareholders decide independently whether to participate in a qualifying sale.
• If tag-along obligation is ignored, the enforcement mechanism in common law jurisdictions is a put option that entitles the minority to require the majority to buy their shares at the transaction price.
• Full tag-along rights allow the minority to sell their entire holding while pro-rata tag-along rights allow the minority to sell a proportional percentage of shares alongside the majority shareholder.
• Unexercised option holders under an ESOP are not shareholders and cannot exercise tag-along rights unless the ESOP documentation provides for accelerated vesting and exercise upon a qualifying sale event.
• Permitted transfer carve-outs exempt internal transfers from triggering the right, but well-drafted agreements ensure that shares transferred under these exemptions remain subject to tag-along obligations if subsequently sold to third parties.

What are tag-along rights?

Tag-along rights (also known as co-sale rights) are contractual provisions that give minority shareholders the right, but not the obligation, to participate in a share sale initiated by a majority or controlling shareholder, on the same price and terms as that majority shareholder.

The right is protective by design. Without it, a majority shareholder can sell their stake to a third party at a premium, transfer control of the company, and leave minority shareholders behind in a business they no longer control and may not be able to exit from on favourable terms. Tag-along rights prevent that outcome by giving the minority an exit option whenever control changes hands.

Unlike drag-along rights, which compel minority shareholders to sell, tag-along rights impose no obligation. The minority shareholders decide whether to participate. If they choose not to exercise the right, the majority sale proceeds without them.

These rights are a feature of shareholders' agreements and investment term sheets. 

How tag-along rights work

Step 1: A triggering event occurs

A tag-along right is typically triggered when a specified shareholder (often a majority or controlling shareholder) agrees to sell shares above a defined threshold to a third party. The agreement determines what level of sale activates the right. For example, a 30% sale may trigger it, while a smaller sale may not. Certain transfers, such as those to affiliates, for estate planning, or between founders, are usually excluded through carve-outs.

Step 2: Notice is issued to minority shareholders

Once the triggering threshold is met, the selling shareholder must notify all shareholders who hold tag-along rights. The notice typically includes the identity of the proposed buyer, the number of shares being sold, the price per share, the form of consideration (cash, stock, or a combination), and the proposed closing timeline. Notice periods vary by agreement but typically range from 10 to 30 business days. A notice period that is too short prevents minority shareholders from making an informed decision.

Step 3: Minority shareholders decide whether to participate

After receiving the notice, each minority shareholder holding tag-along rights can elect to exercise the right by notifying the selling shareholder within the prescribed period. The decision is entirely at the minority shareholder's discretion. They may choose to sell some or all of their eligible shares, or not to participate at all.

Step 4: The buyer acquires the minority's shares on the same terms

If minority shareholders elect to participate, the buyer is obligated to purchase their shares on the same price and terms as the majority's shares. The majority's sale may be conditional on the buyer agreeing to acquire the tagging shareholders' shares as well, which means the buyer knows from the outset that exercising a tag-along could increase the total number of shares being sold.

Step 5: If the right is ignored, enforcement mechanisms engage

Tag-along rights are contractual, so enforcement depends on the remedies specified in the agreement. If a sale occurs in breach of these rights, the selling shareholder is typically required to compensate the minority—either by purchasing their shares on equivalent terms or indemnifying them for the lost opportunity.

The two types of tag-along rights: full and pro-rata

• Full tag-along rights allow the minority shareholder to sell their entire holding whenever a majority sale occurs, regardless of how many shares the majority is selling. 
• Pro-rata tag-along rights allow minority shareholders to sell a proportional amount of their shares alongside the majority seller.

Consider a buyer who is willing to purchase 150 shares. The majority seller wants to sell 100 shares, and two minority holders each want to sell 50 shares, bringing the total participating shares to 200. Because the buyer's limit is 150, each seller can only sell 150/200 (75%) of their intended shares. The majority seller sells 75 shares, and each minority holder sells 37.5 shares. Everyone is reduced by the same proportion.

Tag-along rights in a term sheet

In a term sheet, tag-along rights are typically framed as a high-level commercial agreement rather than a fully drafted clause. The term sheet establishes the principle, and the detailed mechanics are documented in the shareholders' agreement and, where required for enforceability, mirrored in the company's articles of association.

At the term sheet stage, founders and investors typically negotiate:

Who holds the right: Whether tag-along rights are available to all shareholders or only to specific classes such as preferred shareholders or investors holding above a minimum threshold.

The triggering threshold: The percentage of shares that, if sold, activates the tag-along right. Some agreements trigger the right on any third-party share sale; others set a threshold such as 30% or 50% of the company's issued share capital changing hands.

Whether the right is full or pro-rata: As discussed above, this distinction shapes how much of their holding a minority shareholder can exit in a tag-along sale.

Form of consideration: The agreement should explicitly address what happens when the buyer pays in non-cash consideration such as acquiring company shares or a mix of cash and equity. Minority shareholders should ensure that either they receive the same form of consideration as the majority, or the agreement grants them the right to elect a cash equivalent at fair market value where non-cash consideration is involved.

Exceptions and carve-outs: Internal transfers, transfers to affiliates, or transfers for estate planning purposes are often excluded. The specific permitted transfer list is agreed at this stage.

Tag-along rights vs drag-along rights

How tag-along rights affect ESOP and option holders

Employees who hold stock options under an Employee Stock Option Plan do not automatically benefit from tag-along rights when a majority sale occurs. Their position depends on the stage of their equity.

Unexercised options do not confer shareholder status. An employee holding options that have not yet been exercised holds a contractual right to purchase shares in the future, not the shares themselves. Because they are not shareholders at the time of the triggering event, they cannot exercise tag-along rights even if those rights are broadly granted to all shareholders. Whether the sale constitutes an acceleration event that allows or requires options to vest early and be exercised before closing depends on the ESOP documentation and the specific provisions of the shareholders' agreement. 

Exercised options, or shares issued to employees who have converted their options into actual shares, do qualify. Employees who hold shares directly are shareholders and are entitled to any tag-along rights that apply to their share class. 

Permitted transfer exceptions

Shareholders' agreements typically carve out a defined category of transfers that are treated as internal or administrative in nature rather than genuine third-party sales. 

Common permitted transfer exceptions include:

• Transfers to affiliated entities (such as a holding company, subsidiary, or fund vehicle managed by the same investor)
• Transfers to family members for estate planning purposes
• Transfers to a trust established for the benefit of the shareholder or their immediate family
• Transfers between founders under pre-agreed co-founder arrangements

The rationale for these exceptions is that they do not represent a genuine change in the economic or strategic control of the company. The transferee is sufficiently connected to the transferor that the minority shareholder's position is not materially affected.

However, permitted transfer provisions carry a risk that must be explicitly addressed in the agreement. If the transferred shares are subsequently sold from the permitted transferee to a genuine third party, without the original tag-along obligation attaching to those shares, the exemption has effectively been used to circumvent minority protections.  

FAQs on tag-along rights

Are tag-along rights legally enforceable?

Tag-along rights are contractual obligations. Their enforceability depends on how they are documented and, in some jurisdictions, whether they are reflected in the company's constitutional documents. In India, for example, a tag-along provision that appears only in a shareholders' agreement may not bind a third-party buyer who is not a party to that agreement. To be fully enforceable, the right should be mirrored in the articles of association.

Who holds tag-along rights?

Tag-along rights are typically held by minority shareholders, including early investors, founders who have been diluted through multiple funding rounds, and in some cases, employees who hold shares directly rather than unexercised options.

The specific allocation of tag-along rights across share classes is determined by the shareholders' agreement. Some agreements grant tag-along rights to all shareholders. Others limit the right to holders of preferred shares, or define eligibility by ownership threshold, for example, shareholders holding at least 2% of the issued share capital.

Do tag-along rights apply to ESOP holders?

Not automatically. Employees who hold unexercised stock options are not yet shareholders and cannot exercise tag-along rights even if the right is broadly available to all shareholders. Employees who have exercised their options and hold actual shares may qualify, depending on the share class provisions in the shareholders' agreement. ESOP plan rules sometimes provide for accelerated vesting and exercise upon a qualifying sale event, which would allow employees to convert their options into shares before the closing of the transaction and then participate in the tag-along.