TL;DR: Tag-along rights are the minority shareholder's emergency exit - and without them, you can find yourself trapped in a company you never agreed to be part of. When a majority shareholder sells their stake, tag-along rights (also called co-sale rights) give minority holders the right to join the transaction on the same terms and conditions. This sounds simple, but the mechanics matter enormously: trigger thresholds determine when the right activates, pro-rata calculations determine how much the minority can sell, and notice periods determine whether the minority has enough time to actually exercise. In the venture capital and private equity world, tag-along provisions are a foundational term in virtually every shareholders' agreement - the mirror image of drag-along rights that force minorities to sell. Get the balance wrong between these two, and you have either a majority that cannot exit cleanly or a minority that gets left behind with a new controlling shareholder they never chose.
What Is a Tag-Along Right?
A tag-along right (also known as a co-sale right) is a contractual provision that entitles minority shareholders to participate in a sale of shares by a majority or controlling shareholder, on the same price, terms, and conditions as the selling shareholder's transaction. When the tag-along right is triggered, the minority shareholder may elect to sell some or all of their shares to the proposed buyer as part of the same transaction, typically on a pro-rata basis.
The fundamental purpose of tag-along rights is protective: they prevent a majority shareholder from selling control of the company to a third party while leaving minority shareholders stranded with a new controlling shareholder they did not select and may not trust. Without tag-along rights, a minority shareholder in a private company has essentially no liquidity path — they hold illiquid shares in a company whose control has changed hands, often with no market for their position and no leverage to negotiate an exit.
Tag-along rights are the conceptual mirror of drag-along rights. Where drag-along rights empower the majority to compel the minority to sell (ensuring the majority can deliver 100% of the company to a buyer), tag-along rights empower the minority to participate in the majority's sale (ensuring the minority is not excluded from a liquidity event). Well-drafted shareholders' agreements include both mechanisms, calibrated to balance the majority's need for transactional flexibility with the minority's need for exit protection.
Why It Matters
Key Elements of a Well-Drafted Tag-Along Clause
Market Position & Benchmarks
Where Does Your Clause Fall?
Market Data
Sample Language by Position
Minority-Favorable: "If any Key Holder proposes to Transfer any Shares to any Person (other than a Permitted Transfer), each Investor shall have the right to participate in such Transfer on the same terms and conditions as the Key Holder. The Key Holder shall not consummate any such Transfer unless the proposed Transferee agrees to purchase from each participating Investor the number of Shares equal to such Investor's Tag-Along Proportion. If the proposed Transferee declines to purchase the Tag-Along Shares, the Key Holder shall not consummate the proposed Transfer."
Balanced: "If a Selling Shareholder proposes to Transfer Shares representing more than [10]% of the outstanding Shares in a single transaction or series of related transactions, each Tag-Along Eligible Holder shall be entitled to participate in such Transfer on a pro rata basis. The Selling Shareholder shall deliver written notice to each Tag-Along Eligible Holder not less than twenty (20) days prior to the proposed closing, setting forth the identity of the Transferee, the price per Share, and the material terms of the Transfer. The Selling Shareholder shall use best efforts to cause the Transferee to purchase the Tag-Along Shares on terms no less favorable than those applicable to the Selling Shareholder's Shares."
Majority-Favorable: "If a Transfer by a Shareholder would result in the Transferee acquiring more than fifty percent (50%) of the outstanding Shares, each other Shareholder may elect to participate in such Transfer on a pro rata basis by delivering written notice within ten (10) business days of receipt of the Tag-Along Notice. The Selling Shareholder shall use commercially reasonable efforts to include the Tag-Along Shares in the Transfer, provided that the Selling Shareholder may consummate the Transfer without the Tag-Along Shares if the Transferee is unwilling to acquire them."
Example Clause Language
Venture Capital Shareholders' Agreement: "Tag-Along Right. If at any time a Key Holder proposes to Transfer any Shares (other than in a Permitted Transfer), such Key Holder (the 'Tag-Along Seller') shall deliver to the Company and each Investor a written notice (the 'Tag-Along Notice') stating: (i) the name and address of the proposed Transferee; (ii) the number and class of Shares proposed to be Transferred; (iii) the proposed price per Share and form of consideration; and (iv) the other material terms of the proposed Transfer. Each Investor may elect to participate by delivering an exercise notice within fifteen (15) days of receipt of the Tag-Along Notice. Each participating Investor may include in the Transfer, at the same price per Share and on the same terms, a number of Shares equal to the product of (x) the total number of Shares proposed to be Transferred, multiplied by (y) a fraction, the numerator of which is the number of Shares held by such Investor and the denominator of which is the total number of Shares held by the Tag-Along Seller and all participating Investors. The Tag-Along Seller shall not consummate the proposed Transfer unless the Transferee agrees to acquire the Shares of all participating Investors in accordance with this Section."
Joint Venture Agreement: "Co-Sale Right. In the event that either Party (the 'Transferring Party') proposes to Transfer all or any portion of its Interest in the Company to a Third Party, the other Party (the 'Non-Transferring Party') shall have the right, exercisable within thirty (30) days following receipt of the Transfer Notice, to Transfer to the proposed Transferee, on the same terms and conditions, a proportionate share of the Non-Transferring Party's Interest. For purposes of this Section, 'proportionate share' means the percentage determined by dividing the Non-Transferring Party's Interest by the aggregate Interests of both Parties. This co-sale right shall be in addition to, and shall not limit, the Non-Transferring Party's rights under Section [ROFR Section]."
Private Equity Co-Investment Agreement: "If the Sponsor proposes to Transfer any of its Shares to a Third Party Purchaser (other than a Transfer to a Sponsor Affiliate), each Co-Investor shall have the right to sell to such Third Party Purchaser, at the same price per Share (on an as-converted basis) and on the same terms and conditions, the Co-Investor's Pro Rata Portion of the Shares being sold. The Sponsor shall not consummate any Transfer subject to this Section unless (a) the Third Party Purchaser has agreed in writing to purchase the Co-Investors' Tag-Along Shares, and (b) at the closing of such Transfer, the Third Party Purchaser simultaneously purchases the Tag-Along Shares from all electing Co-Investors. If the Third Party Purchaser is unwilling to purchase all Tag-Along Shares, the number of Shares to be purchased from the Sponsor and each electing Co-Investor shall be reduced on a pro rata basis."
Common Contract Types
Negotiation Playbook
Key Drafting Notes
Common Pitfalls
Jurisdiction Notes
United States: Tag-along rights are a creature of contract, not statute, and are enforced under general state contract law. Delaware is the most common governing law for shareholders' agreements in venture and PE-backed companies, and its courts have a well-developed body of law on shareholder agreement interpretation. Specific performance is generally available as a remedy for breach of tag-along provisions, as courts recognize that the illiquidity of private company shares makes monetary damages inadequate. Tax considerations under IRC Sections 302 (redemptions), 304 (related corporation transactions), and 1202 (qualified small business stock) may be implicated depending on the structure of the tag-along sale. Securities law considerations include compliance with Rule 144 (for affiliates) and any applicable blue sky laws.
United Kingdom: Tag-along rights (commonly called "co-sale rights" or "piggyback rights") are standard features of UK shareholders' agreements and are enforceable as contractual provisions. The Companies Act 2006 provides a statutory framework for share transfers (Part 21, particularly the model articles), but tag-along rights are typically established by contract rather than in the articles of association. Where tag-along rights are included in the articles, they bind all shareholders (including future transferees) by operation of statute. HMRC guidance on the tax treatment of tag-along sales follows general capital gains principles, with particular attention to the "connected persons" rules and entrepreneurs' relief (now business asset disposal relief) eligibility.
European Union and Other Jurisdictions: Tag-along rights are recognized across EU Member States, though the mechanism and enforceability vary. In many civil law jurisdictions (France, Germany, Netherlands), tag-along rights can be established in shareholders' agreements but may require specific formalities to be enforceable against third-party buyers. French law explicitly recognizes tag-along clauses (clauses de sortie conjointe) in the Code de Commerce, and they are regularly enforced by French courts. German law permits tag-along rights in shareholders' agreements (Gesellschaftervereinbarungen), but their enforceability against the buyer depends on whether the buyer is a party to the agreement. In India, tag-along provisions are standard in venture capital and private equity transactions and are recognized under the Companies Act 2013, though enforcement through Indian courts can be slow, making arbitration the preferred dispute resolution mechanism. In Brazil, the Corporations Law (Law No. 6,404/76) provides statutory tag-along rights for certain minority shareholders in publicly traded companies, guaranteeing participation in change-of-control transactions at a minimum of 80% of the controlling shareholder's price per share.
Related Clauses
This glossary entry is provided for informational purposes only and does not constitute legal advice. Tag-along rights involve complex interactions among corporate law, securities regulation, and tax law that vary significantly by jurisdiction. The effectiveness of tag-along provisions depends on careful drafting tailored to the specific shareholder structure, share classes, and commercial context. Consult qualified legal counsel before drafting or negotiating tag-along provisions in any shareholders' agreement or investment transaction.
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