Irish startup founders, CEOs, and CFOs negotiating with investors or lenders requesting share warrants in venture debt, bridge rounds, or partnerships.
Readers will gain insights into warrant mechanics, dilution modeling, essential negotiation terms, and compliance with Irish company law to safeguard equity and structure deals effectively.
Key Takeaways
- Share warrants grant the right to purchase shares at a fixed price, creating potential future dilution overhang on the cap table until exercised.
- Most common in Irish startups for venture debt sweeteners (0.5-2% coverage), bridge incentives, advisory pay, and partnerships.
- Key negotiable terms: exercise price, period (5-10 years), vesting, anti-dilution, cashless exercise to manage dilution risk.
- Model fully diluted cap table including warrants before deals; they impact investor assessments.
- Irish Companies Act 2014 requires allotment authority, pre-emption handling, constitutional checks, and CRO Form B5 filings on exercise.

If an investor or lender has asked for warrants as part of your deal, you need to understand what you are giving away. Share warrants in Irish startup fundraising give the holder the right to buy shares at a fixed price in the future, and their impact on your cap table can be significant if you do not structure them carefully. This article covers how warrants work, when they are used, the key terms to negotiate, and the legal requirements under Irish company law.
What are share warrants?
A share warrant is a contractual right that allows the holder to purchase a specified number of shares in a company at a predetermined price, known as the exercise price, before a set expiration date. No shares change hands when the warrant is issued. The holder only acquires equity if and when they choose to exercise.
While similar, warrants differ from share options in a practical way. Options are typically used to compensate employees, directors, and advisors under the company's employee share schemes like the KEEP (Key Employee Engagement Programme). Warrants are generally issued to external parties, usually investors, lenders, or strategic partners, as part of a commercial transaction.
They also differ from convertible loan notes, which are debt instruments that convert into equity automatically on a trigger event. Warrants are standalone rights that the holder can choose to exercise or let expire.
Warrants can be issued as standalone instruments or attached to other securities, such as a venture debt facility or a bridge round note. When attached, they act as a "sweetener" that compensates the other party for taking on additional risk.
When are warrants used in practice?
Warrants appear most frequently in four scenarios in Irish startup fundraising:
- Venture debt sweeteners. Lenders providing venture debt typically request warrant coverage of 0.5-2% of the company's fully diluted share capital. The warrant compensates them for lending to a company that may not yet be profitable and lacks hard assets as collateral. This is where warrants most commonly arise in the Irish startup market.
- Bridge round incentives. Investors participating in a bridge round may receive warrants in addition to, or instead of, a discount on the next priced round. This gives them upside exposure if the company's valuation recovers.
- Advisory and service provider compensation. While options would be more common, warrants are sometimes issued to advisors, consultants, or service providers in lieu of cash fees, particularly in early-stage companies conserving runway.
- Strategic partnerships. Companies entering distribution, licensing, or co-development agreements may issue warrants to align incentives with the partner.
In each case, the warrant serves the same purpose: it gives the recipient a stake in the company's future success without requiring an immediate equity issuance. The warrant holder will have the benefit of seeing the company's future success, before deciding if it will exercise the warrant and pay the exercise price to do so.
What key terms should founders negotiate?
The terms of a warrant agreement determine how much dilution you face and when. These are the clauses that matter most:
Exercise price. This is the price per share the holder pays when exercising the warrant. It is usually set at the share price of the most recent funding round, though lenders sometimes negotiate a discount. A lower exercise price means more dilution for existing shareholders on exercise.
Exercise period and expiry. Most warrants have an exercise window of 5 to 10 years. Shorter periods limit the holder's optionality. Longer periods extend the overhang on your cap table.
Vesting conditions. Some warrants vest immediately on issuance, while others are tied to milestones, such as the lender disbursing the full loan facility. Milestone-based vesting gives you more control over when the dilution risk materialises.
Anti-dilution adjustments. Warrant agreements often include provisions that adjust the exercise price or the number of shares if the company issues new equity at a lower price. Review these carefully, as they can amplify dilution in a down round.
Cashless exercise. A cashless exercise provision allows the holder to convert warrants into shares without paying the exercise price in cash. Instead, the number of shares issued is reduced to reflect the difference between the current share value and the exercise price. This is common in venture debt warrants.
How do warrants affect founder dilution?
Warrants do not cause immediate dilution. They represent potential future dilution that sits on the cap table as an "overhang" until exercised or expired.
The dilution impact becomes concrete when warrants are exercised. The more warrants outstanding, the greater the dilution on exercise. When calculating fully diluted share capital, outstanding warrants are included alongside unexercised options and convertible instruments (such as loan notes or SAFEs). This is the number investors care about when assessing your ownership structure and pricing new rounds.
Founders should model the cap table impact of warrants before agreeing to any deal. Run scenarios that include full exercise of all warrants alongside conversion of any outstanding convertible instruments. This gives you the true fully diluted picture.
What does Irish company law require?
Issuing warrants in Ireland involves several legal requirements under the Companies Act 2014:
Board and shareholder authority. The directors must have authority to allot shares on exercise of the warrants. This authority is granted by the company's constitution or by ordinary resolution of the shareholders. Check that your existing allotment authority covers the shares that may be issued on exercise.
Pre-emption rights. Statutory pre-emption rights under the Companies Act 2014, or contractual (if contained in the shareholders' agreement) may apply when new shares are issued meaning existing shareholders have the right to subscribe for those shares first, unless pre-emption has been disapplied by a shareholder resolution, waiver or in the constitution. This point should be addressed as the time of issuing the warrants, not left until the warrants are being exercised.
Constitutional and contractual provisions. If the warrants require the creation of a new share class, an amendment to the company's constitution may be needed. Review the company's constitution, and shareholders' agreement to confirm the company has the flexibility to issue warrants without requiring further shareholder approval.
CRO filings. When warrants are exercised and new shares are issued, file a Form B5 (return of allotments) with the CRO within 30 days. Update the register of members accordingly.
How should a warrant agreement be documented?
A warrant instrument should cover the following essential elements:
- Number of shares and exercise price. State the maximum number of shares that can be acquired and the price per share.
- Exercise mechanics. Define how and when the holder can exercise, including whether cashless exercise is permitted and what notice is required.
- Expiry date. Set a clear deadline after which the warrant lapses.
- Transferability. Specify whether the warrant can be assigned or transferred to a third party. Most startup warrants restrict transfer to protect the cap table.
- Anti-dilution and adjustment provisions. Detail what happens to the warrant terms if the company issues new shares, splits shares, or pays dividends.
- Exit events. Define what happens to unexercised warrants on a company sale, IPO, or winding up. Common approaches include automatic exercise, accelerated expiry, or conversion at the exit price.
- Drag-along and tag-along interactions. Clarify whether warrant holders have tag-along rights on a sale, and whether the company can drag unexercised warrants into a transaction.
The warrant instrument should be reviewed alongside your shareholders' agreement to ensure there are no conflicts between the warrant terms and existing investor rights.
Where this leaves you
Share warrants are a standard part of venture debt and bridge financing in Ireland. They give lenders and investors upside exposure without immediate equity issuance, but the dilution impact on other shareholders, including founders, can be material if the terms are not negotiated carefully.
Before agreeing to any warrant arrangement, model the fully diluted cap table, negotiate caps on warrant coverage, and ensure your company's constitution supports the issuance. If you need help structuring or reviewing warrant terms, Open Forest can walk you through the legal requirements and the numbers.

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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