Shareholder agreements: why careful drafting matters more than you might think

In many privately owned companies, shareholders start out aligned. The business is growing, relationships are strong and everyone is focused on the same goal. At that early stage, it is common for shareholders to assume the company's articles of association will be enough to keep things running smoothly.

Over time, circumstances change. The business becomes more valuable, people's priorities shift, and decisions that once felt straightforward become harder to agree on. This is usually the point at which shareholders realise that the articles alone do not answer the questions that really matter day to day. A well drafted shareholder agreement plays a crucial role in avoiding that uncertainty and protecting both the business and the people behind it.

Simon Moffat, Partner in our Corporate team at Gisby Harrison, explains, in plain English, what shareholder agreements are for, why they matter, and how thoughtful legal advice can prevent disputes before they arise.

Speak to our Corporate team, call 01707 878 300

What is a shareholder agreement, in simple terms?

A shareholder agreement is a private contract between a company's shareholders. It sits alongside the articles of association and sets out how shareholders have agreed the company should be run and how key decisions will be handled.

One important distinction is confidentiality. Unlike the articles, which are public documents, a shareholder agreement is private. This allows shareholders to deal openly with sensitive matters such as control, exits and financial arrangements without placing those details on public record.

At its core, a shareholder agreement is about certainty. It gives everyone clarity on their rights, responsibilities and expectations, including when relationships come under strain.

Why aren't the articles of association enough on their own?

Articles of association are essential, but they are designed to be broad and standardised. Even when tailored, they tend to focus on company mechanics rather than the commercial and personal realities of shareholder relationships.

For example, articles rarely deal in detail with questions such as:

• What happens if shareholders fall out and cannot agree on a major decision
• How shares should be valued if someone wants, or is required, to leave
• How minority shareholders protect themselves if they are outvoted
• Whether shareholders are expected to work in the business or simply invest

A shareholder agreement fills these gaps by setting bespoke rules that reflect how the business actually operates and what the individuals involved need from the arrangement.

Who should consider putting a shareholder agreement in place?

Shareholder agreements are particularly important for privately owned companies, where shares are held by individuals rather than traded on the open market.

This commonly includes:

• Founder led businesses
• Family companies
• Joint ventures
• Companies with minority investors
• Businesses where shareholders are also directors or employees

In these settings, personal relationships and commercial interests are closely linked. A clear agreement helps preserve both by reducing scope for misunderstanding later on.

What provisions matter most in a well drafted agreement?

Every agreement should be tailored to the company, but certain provisions tend to be critical in most private companies.

One of the most important areas is decision making. Shareholder agreements often include a list of “reserved matters”, meaning decisions that cannot be taken without the consent of all, or a specified percentage, of shareholders. This gives minority shareholders meaningful protection against major changes being forced through.

Exit provisions are another common source of difficulty. Clauses dealing with share transfers, “good leaver” and “bad leaver” scenarios, and how shares will be valued all need careful thought. These terms often determine whether a shareholder can leave on fair terms or feels trapped in the business.

Agreements also frequently address how profits are distributed, whether shareholders are expected to work in the business, restrictions on competing with the company, and what happens if someone becomes unable to continue due to illness or death.

How do shareholder agreements help prevent disputes?

Most shareholder disputes do not arise because someone set out to cause problems. More often, expectations were never fully aligned.

A clear shareholder agreement forces those conversations to happen early, while relationships are still positive. Scenarios such as deadlock, exit or changing levels of involvement can feel uncomfortable to discuss, yet it is far easier to agree solutions calmly in advance.

If a dispute does arise, a properly drafted agreement provides a clear framework for resolving it. That clarity can reduce the risk of costly litigation and, in some cases, prevent court proceedings altogether.

How are minority shareholders protected?

Minority shareholders are often particularly vulnerable without an agreement in place. In the absence of agreed protections, majority shareholders may be able to exercise control in ways that feel unfair, even if technically lawful.

A shareholder agreement can rebalance that position by providing:

• Veto rights over key decisions
• Protections against dilution
• Fair exit rights if relationships break down

This is not about creating imbalance in the opposite direction. It is about ensuring all shareholders understand the boundaries of their power and the consequences of exercising it.

What goes wrong with poorly drafted shareholder agreements?

A poorly drafted agreement can be almost as problematic as having no agreement at all.

Common issues include:

• Vague or ambiguous wording
• Inconsistencies between the agreement and the articles
• Clauses that no longer reflect how the business operates

Another frequent problem is failing to review the agreement. Something drafted at incorporation may no longer be fit for purpose several years later, particularly if new shareholders have joined or the company has grown significantly.

Good legal advice covers not only drafting the initial agreement, but reviewing it periodically to ensure it still works in practice.

When should shareholders review or update their agreement?

A review should be considered whenever there is a significant change, for example:

• External investment
• Changes to management or ownership
• The introduction of new share classes
• A shift in long term business strategy

Regular reviews help ensure the agreement continues to support the business rather than becoming a source of friction or uncertainty.

Taking the right advice at the right time

Drafting a shareholder agreement is about far more than legal wording. It requires an understanding of how the business operates, what drives the people involved, and where pressure points are likely to emerge in the future.

Taking specialist advice at an early stage can save a great deal of time, cost and stress later on. Clear, practical agreements give shareholders the confidence to focus on growing the business, knowing that the foundations are secure.

If you are setting up a company, bringing in new shareholders, or simply want to sense check an existing agreement, a conversation with an experienced corporate solicitor can be a sensible first step. The right structure, put in place at the right time, often makes all the difference when circumstances change.

Speak to our Corporate team, call 01707 878 300 or contact us today.