Share Sale Agreements and Constitutions in New Zealand: Key Issues for Business Sales

Selling shares in a New Zealand company can look simple on paper. The buyer pays, the seller signs a share sale agreement, and ownership changes hands. In practice, this is where founders and SME owners often get caught. Common mistakes include signing a sale agreement without checking the company constitution, overlooking pre-emptive rights or director approval requirements, and relying on verbal promises about debt, customers, or key contracts that never make it into the document.

A proper share sale agreement & constitution review helps you spot those issues before you sign. It also helps you work out whether the company can legally transfer the shares on the proposed terms, what approvals are needed, and how risk should be allocated between buyer and seller. If you are buying or selling a business through a share sale in New Zealand, this guide explains the main legal issues, where the constitution can change the deal, and the mistakes that cause delays, price disputes, or claims after completion.

Overview

A share sale transfers ownership of the company itself, not just selected business assets. That means the buyer usually takes on the company with its contracts, liabilities, records, disputes, and history, subject to what the sale documents say and what due diligence reveals.

The constitution matters because it can restrict share transfers, require approval steps, or give existing shareholders rights that override assumptions in the draft agreement.

• Whether the constitution restricts share transfers or requires board or shareholder approval
• Whether existing shareholders have pre-emptive rights or rights of first refusal
• Who is actually selling the shares, and whether title to those shares is clear
• What warranties and indemnities the buyer wants, and how far the seller should agree
• Whether key contracts, leases, finance documents, or licences are affected by a change of control
• How completion will work, including payment timing, resignations, records, and Companies Office updates
• What happens if the business position changes between signing and completion
• Whether restraint, confidentiality, and handover obligations are properly covered

What Share Sale Agreement & Constitution Review Means For New Zealand Businesses

A share sale agreement & constitution review means checking that the proposed sale matches the company’s internal rules and that the contract properly deals with commercial risk. For New Zealand businesses, this usually sits alongside due diligence, shareholder discussions, finance arrangements, and practical completion planning.

Founders often focus on the purchase price first. The legal structure matters just as much. A buyer in a share sale usually acquires the company with all its existing legal relationships, including supplier contracts, employment arrangements, leases, customer disputes, and regulatory obligations.

That is why a buyer usually asks for detailed promises from the seller, often called warranties. These statements cover things like ownership of shares, accuracy of financial information, compliance issues, disputes, employment matters, and key contracts. If those promises turn out to be untrue, the buyer may seek compensation, subject to the contract terms.

On the seller side, the main concern is limiting post-sale exposure. Sellers usually want warranties narrowed, disclosure protections included, time limits imposed, and liability caps negotiated. The right approach depends on the business, the sale price, and what the buyer already knows.

Why the constitution matters in a share sale

The constitution is not just a filing document sitting in the background. It can directly affect whether the shares can be transferred and what process must be followed.

Many constitutions include rules about:

• pre-emptive rights, where shares must first be offered to existing shareholders
• board approval for a transfer
• restrictions on transfers to competitors or related parties
• requirements for signing transfer documents
• different rights attaching to different share classes
• drag-along or tag-along rights in some cases

If the share sale agreement says one thing and the constitution says another, that mismatch can create delay or invalidity risk. This is where founders often get caught, especially in companies that started with a basic constitution and then added shareholders later without fully tidying governance.

How this differs from an asset sale

A share sale is different from an asset sale because the company remains the contracting party. The legal entity stays the same, but its owners change.

That can be attractive if the business has valuable contracts, licences, employees, goodwill, or operating history that the buyer wants to keep in place. But it also means the buyer needs to be more careful about hidden liabilities. Historic tax issues, unresolved employee claims, customer complaints, compliance gaps, or poor records can stay inside the company after completion. An accountant or tax adviser should advise on tax treatment and financial structuring.

For SMEs, the practical question is simple: does the buyer want the company as it stands, or only selected assets? The answer shapes the risk profile and the sale documents.

Who should care about this review

This review matters for more than large M&A transactions. It is relevant when:

• a founder is selling some or all of their shares
• co-owners are exiting
• an investor is buying into an existing company
• a family business is being sold
• a competitor is acquiring the company
• a management buyout is happening

Even where the deal is friendly, documents still matter. Relationships are often strongest before the contract is tested.

Legal Issues To Check Before You Sign

The key legal issue is whether the company can transfer the shares on the proposed terms and whether the agreement properly allocates risk. Before you sign a contract, the constitution, shareholders agreement, and the company’s wider obligations all need to line up.

1. Share transfer restrictions and approvals

Start with the constitution and any shareholders agreement. Check whether the transfer needs approval from directors, shareholders, or another class of investor.

Look closely for:

• pre-emptive rights requiring an offer to existing shareholders first
• notice periods and formal offer steps
• board discretion to refuse registration of a transfer
• consent rights held by investors or minority shareholders
• special processes for shares held on trust or by a company

If those steps are missed, the transaction can be delayed or challenged. A buyer should not assume that a signed sale agreement automatically means registered ownership will follow.

2. Title to shares and share capital history

The seller needs to actually own the shares being sold, free of problems that affect transfer. That sounds obvious, but issues are common in founder-led companies.

Check the share register, allotment history, shareholder resolutions, and Companies Office records. If previous share issues were not documented properly, if vesting arrangements were left unresolved, or if share numbers do not match the register, the parties may need to fix these issues before completion.

Where there are different share classes, confirm what rights attach to them. Voting rights, dividend rights, and liquidation preferences can materially affect value.

3. Warranties, indemnities, and disclosures

Warranties and indemnities are where much of the negotiation sits. The buyer wants broad protection. The seller wants clear limits.

Common warranty areas include:

• ownership and authority to sell the shares
• accuracy of accounts and records
• undisclosed liabilities
• material contracts
• employment matters
• intellectual property used by the business
• privacy compliance, data handling, and data protection obligations
• disputes, notices, and investigations
• compliance with laws and licences relevant to the business

An indemnity is usually more specific. For example, a buyer may ask for an indemnity covering a known dispute, a historical compliance issue, or a risk identified in due diligence.

Sellers should pay close attention to the disclosure process. If something is disclosed properly against a warranty, that can reduce the chance of a later claim. Vague disclosure is often not enough.

4. Conditions precedent and third party consents

Some deals should not complete until key conditions are met. If the company has bank finance, a major lease, regulated contracts, or customer agreements with change of control clauses, third party consent may be needed.

Check whether completion should depend on:

• bank consent or release of security
• landlord consent under a commercial lease
• counterparty consent under major supply or customer contracts
• regulatory or licence-related approvals where the business is in a regulated sector
• approval from existing shareholders or investors

This is especially important where the business depends on a handful of key relationships. A sale can lose value quickly if a major contract can be terminated because ownership changed.

5. Purchase price mechanics

The agreed price is only part of the story. The agreement should say how and when the price is paid, and whether any post-completion adjustments apply.

Points to settle include:

• deposit arrangements
• deferred payments or instalments
• earn-out terms tied to future performance
• adjustments for debt, cash, or working capital
• retention amounts held back for claims

These clauses often become dispute points because they mix legal drafting with accounting concepts. The legal wording should match the intended financial outcome.

6. Restraints, confidentiality, and handover

If the seller is involved in the business day to day, the buyer may want protection against the seller setting up nearby or taking customers and staff. Restraint clauses need to be drafted carefully to improve enforceability.

The agreement may also cover:

• confidentiality after completion
• non-solicitation of customers, suppliers, and employees
• transitional consulting or handover support
• return of company property and records
• director resignations and release documents

These clauses matter most where the business relies heavily on founder relationships and know-how.

7. Completion steps and records

Completion should be treated like a practical checklist, not just a date in the contract. Many delays come from missing documents rather than legal disagreement.

Completion items often include:

• signed share transfer forms
• board resolutions approving the transfer and registration
• updated share register
• director and shareholder resolutions where needed
• resignation letters and waivers
• release of securities or guarantees if agreed
• handover of company records, passwords, and statutory books

After completion, Companies Office filings and internal records should be updated promptly.

Common Mistakes With Share Sale Agreement & Constitution Review

The most common mistake is treating the constitution as background paperwork instead of a deal document. The second is assuming a friendly buyer or seller means the legal details can stay informal.

Ignoring pre-emptive rights

Many private companies have rules requiring shares to be offered to existing shareholders first. If a seller skips that step and signs with an outside buyer, the transaction can unravel.

This often happens in companies that have grown quickly and not revisited their governance documents since early fundraising or founder changes.

Using a generic template that does not fit the deal

A basic precedent may miss key New Zealand business issues, especially where there are minority shareholders, staged payments, known disputes, or a constitution with unusual transfer rules.

Templates also tend to understate disclosure mechanics and overstate broad warranty protections without proper liability limits. That creates false confidence on both sides.

Relying on verbal promises

If the seller says a customer contract will continue, a dispute is minor, or a director loan will be cleared, that should be reflected in the contract or completion steps. Before you rely on a verbal promise, ask whether it needs to be a warranty, indemnity, condition, or specific undertaking.

Memory and expectations change quickly once money has changed hands.

Forgetting change of control clauses

The company may keep the same legal identity after a share sale, but some contracts still treat a change in ownership as a trigger event. Finance documents, leases, franchise arrangements, software licences, and major supply agreements can all contain change of control wording.

If the buyer discovers this too late, the business may not be worth what it seemed.

Weak disclosure and poor records

Sellers sometimes attach a bundle of documents and assume everything has been disclosed. Buyers sometimes accept that without checking whether the disclosure is clear enough to qualify the warranties.

Good disclosure is specific and organised. Good records matter too. Missing resolutions, unsigned shareholder approvals, or a messy share register can create avoidable closing pressure.

Not aligning the sale agreement with the constitution and shareholders agreement

Where multiple governance documents exist, they need to be read together. A buyer may negotiate transfer terms in the sale agreement only to discover separate drag-along rights, investor consent rights, or appointment rights elsewhere.

This is where constitution review earns its place. The point is not just to summarise the document. The point is to test whether the deal can work as planned.

Overlooking post-completion exposure

Sellers often focus on getting completion done, but the real commercial risk may sit after the sale. Warranty claims, earn-out disputes, and indemnity issues can continue for months or years.

That is why limitation clauses matter. Check the claim periods, financial caps, thresholds, conduct of claims, and whether the seller’s liability is reduced if the buyer already knew about an issue.

FAQs

Does a company constitution override a share sale agreement?

Not exactly, but the constitution can restrict or control how shares are transferred. If the agreement ignores those rules, the parties may still have problems completing and registering the transfer properly.

Do all New Zealand companies need a constitution for a share sale?

No, not every company has a constitution. But if one exists, it must be reviewed carefully. If there is also a shareholders agreement, that should be checked as well.

Can a buyer rely only on due diligence instead of warranties?

Usually no. Due diligence helps identify issues, but warranties and indemnities allocate risk contractually. Buyers typically want both, and sellers usually want disclosure and liability limits alongside them.

What if the company has only one shareholder?

The process can be simpler, but it is still important to check the constitution, title to shares, third party consents, and completion mechanics. Sole shareholder deals still run into issues with leases, banking, records, and warranties.

Should the parties sign before all consents are in place?

Sometimes they can sign first and make completion conditional on consents, but that depends on the deal structure and risk. If a key consent is uncertain, the agreement should deal clearly with timing, obligations, and termination rights.

Key Takeaways

• A share sale agreement & constitution review checks both the transfer contract and the company’s internal rules so the deal can complete properly.
• The constitution may contain pre-emptive rights, approval requirements, transfer restrictions, and share class rules that affect the sale.
• Buyers should focus on warranties, indemnities, due diligence findings, third party consents, and change of control risks.
• Sellers should focus on disclosure, liability limits, post-completion exposure, and making sure share records and approvals are accurate.
• Friendly deals still need careful drafting, especially where founder relationships, deferred payments, or key contracts are involved.
• Before you sign, line up the constitution, shareholders agreement, Companies Office records, finance documents, leases, and completion checklist.

If you want help with transfer restrictions, warranties and indemnities, disclosure drafting, contract review, and completion documents, you can reach us on 0800 002 184 or team@sprintlaw.co.nz for a free, no-obligations chat.