This article is for Irish startup founders and company directors who need to control who can own shares in their business.
If you're wondering how to prevent unwanted investors from buying into your company, protect founders from losing control, or set up the right restrictions before raising funding, this guide covers pre-emption rights, board approval mechanisms, and what your constitution must include to keep your cap table clean.
Key Takeaways
• Your constitution must include pre-emption rights and board approval requirements to prevent unwanted shareholders from acquiring shares.
• Transfers that breach constitutional restrictions are automatically void under Section 84(2), protecting your company without court intervention.
• Tag-along rights protect minority shareholders while drag-along rights let majority holders force minorities to join approved sales.
• Investment agreements layer additional restrictions onto constitutional provisions, creating multiple protection levels as you raise capital.
• Removing transfer restrictions requires special resolution approval and typically only happens for public listings or major funding rounds.

Why Do Share Transfer Restrictions Matter?
- Share transfer restrictions control who can become a shareholder in your company, which is fundamental to maintaining the right ownership structure.
- Without these restrictions in place, founders can lose control to unknown or unwanted investors who may not share the company's vision.
- Your early decisions about transfer restrictions will shape your company's ownership structure for years to come, affecting everything from funding rounds to eventual exits.
What Are Share Transfer Restrictions?
Share transfer restrictions are legal rules that limit how shareholders can sell or transfer their shares to other parties. These restrictions appear in your company constitution and sometimes in separate shareholders' agreements that create additional contractual obligations.
Section 84 of the Companies Act 2014 explicitly allows private companies to restrict share transfers in their constitution, giving you significant flexibility in designing your restrictions. The most common restrictions typically require board approval for transfers, offer shares to existing shareholders first through pre-emption rights, or combine both mechanisms.
How Do Pre-emption Rights Work?
Pre-emption rights give existing shareholders the first opportunity to buy shares before any external sales can proceed. When a shareholder wants to sell their shares, they must first offer those shares to other existing shareholders at the proposed price and terms.
The selling shareholder notifies the company of their intention to sell, and the company then circulates the offer to all other shareholders with a specified time period to accept (typically 14-30 days).
If existing shareholders decline the offer, the shares can then be offered to external buyers, but if the external terms differ materially from the internal offer, the pre-emption process must restart to protect existing shareholders. This process maintains existing shareholders' proportional ownership percentages and prevents unexpected dilution from external sales.
When Do You Need Board Approval?
Board approval requirements give directors control over who joins the shareholder register, which is crucial for maintaining strategic direction. Section 84(3) confirms that private company constitutions can restrict transfers freely, and most startup constitutions include board approval provisions for all transfers.
Directors should consider several factors when evaluating proposed transfers, including whether the proposed buyer aligns with the company's strategic direction, how the transfer might affect future funding relationships, and whether the new shareholder can work constructively with existing shareholders.
Directors must act in the company's best interests when making these decisions rather than acting on personal preferences or conflicts.
What Are the Risks of Unrestricted Transfers?
- Companies without proper transfer restrictions face significant control risks that can jeopardize the business's future.
- Shareholders can freely transfer shares to anyone without restriction, which means competitors or other problematic parties can acquire shares and gain access to confidential information.
- Founders lose the ability to manage shareholder composition, which makes it harder to maintain a cohesive vision and strategy for the company.
- Most venture capital investors refuse to invest in companies without proper transfer restrictions because messy cap tables create complexity during due diligence and exit negotiations.
What Are Tag-Along and Drag-Along Rights?
Tag-along and drag-along rights balance the interests of majority and minority shareholders during potential sales or exits. Tag-along rights protect minority shareholders by allowing them to sell their shares on the same terms if a majority shareholder decides to sell to a third party.
This prevents minorities from being left with illiquid stakes in companies that have been acquired or undergone significant ownership changes. Drag-along rights allow majority shareholders (typically those holding 50% or more) to force minority shareholders to join in approved sales to third parties.
This provision prevents small shareholders from blocking valuable exit opportunities, which is essential because acquirers often require 100% ownership to complete transactions.
How Do Investment Agreements Add Restrictions?
Investment agreements typically layer additional restrictions onto the constitutional provisions that form the baseline framework. These agreements create contractual obligations between specific shareholders and often address specific investor concerns about exit opportunities and control mechanisms.
Typical investment agreement restrictions include right of first refusal provisions giving investors priority over other shareholders in purchases, co-sale rights allowing investors to participate in founder sales proportionally, and transfer approval requirements for certain types of transfers. These provisions supplement but don't replace constitutional restrictions, creating multiple layers of protection for different stakeholder groups.
What Should Your Constitution Include?
Your company constitution should establish clear, comprehensive transfer restrictions that balance protection with practical administration.
Section 84(1) allows you to draft restrictions that suit your specific business needs and shareholder composition.
Essential constitutional provisions include a clear transfer process defining exact steps for any proposed transfer, notice requirements specifying what information transferring shareholders must provide, and response timeframes setting reasonable deadlines for board and shareholder responses.
Your constitution should also establish valuation mechanisms for determining share prices, define exception categories for transfers exempt from restrictions (such as inheritance or spouse transfers), and include dispute resolution procedures for transfer disagreements.
How Are Restricted Shares Valued?
Valuation mechanisms prevent disputes when shareholders exercise pre-emption rights or when the company exercises buy-back options.
Your constitution should specify how share prices are determined, with common methods including fair market value determined by independent valuation, formula methods based on recent financial results, or the price from the most recent arms-length share sale.
Most constitutions require independent valuation by a qualified accountant to ensure fairness between buying and selling shareholders. The valuation must occur within specified timeframes to prevent delays that could frustrate legitimate transfers or create commercial uncertainty.
What Transfers Are Typically Exempt?
Most constitutions exempt certain transfers from pre-emption and approval requirements to balance control with legitimate transfer needs. Common exemptions include transfers upon death to personal representatives or beneficiaries, transfers between spouses during marriage, transfers to the settlor's own family trust, transfers within affiliated company groups during corporate reorganizations, and transfers required by court orders.
These exemptions should be narrowly drafted to prevent abuse while accommodating genuine family succession planning and estate administration needs.
What Happens When Someone Breaches Restrictions?
- Transfers that breach constitutional restrictions are void under Section 84(2), providing automatic protection without requiring court intervention.
- The company can refuse to register the transfer in its share register, which means the purported transferee never becomes a registered shareholder with voting or dividend rights.
- The original shareholder retains all rights and obligations despite the attempted transfer, and the breaching party may face liability for legal costs incurred by the company in preventing or unwinding the breach.
- Clear, well-drafted restrictions make enforcement straightforward and reduce the likelihood of disputes requiring expensive litigation.
How Do Restrictions Change During Funding Rounds?
Investment rounds typically require amending transfer restrictions to accommodate investor requirements and protection mechanisms. Investors negotiate specific rights tailored to their investment thesis, which often include exemptions for transfers to affiliated funds, enhanced pre-emption rights giving investors priority over other shareholders, and lower thresholds for drag-along provisions.
Each funding round adds complexity to your restriction framework, so maintaining consistency between the constitution and various investment agreements becomes increasingly important as you raise capital.
Can You Remove Transfer Restrictions Later?
Yes, but removing restrictions requires a special resolution approval from shareholders under Section 85.
The decision affects all shareholders and requires careful consideration of the implications for different shareholder groups.
Removal typically happens only for specific strategic reasons such as preparing for a public listing (which requires freely transferable shares), corporate simplification to remove outdated restrictions, or meeting new investor requirements during significant funding rounds.

Stuart Connolly is a corporate barrister in Ireland and the UK since 2012.
He spent over a decade at Ireland's top law firms including Arthur Cox & William Fry.









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