A Shares Explained: Meaning For UK Startups, Shareholders And Deals

If you’re running (or about to launch) a UK startup, chances are you’ve heard investors, accountants or co-founders talk about A shares.

Sometimes they’re treated as the “default” share class. Other times, they’re used as a tool to give founders control, set up different dividend rights, or make an investment deal work.

The tricky part is this: “A shares” isn’t a fixed legal concept. In the UK, A shares can mean very different things depending on how your company has set up its share rights.

Below, we’ll break down what A shares typically are in practice, how they’re used in real startup cap tables, and what you should lock in (in writing) before you issue them to founders, employees, or investors.

What Are A Shares In The UK?

In the simplest terms, A shares are a class of shares (often called “Ordinary A Shares” or just “A Ordinary Shares”) that a UK company issues to shareholders.

Under the Companies Act 2006, a company can issue different classes of shares, and each class can carry different rights. Those rights are usually set out in:

• the company’s articles of association (its internal rulebook), and
• any shareholder arrangements you’ve put in place (for example, a shareholders agreement).

There’s no single UK rule that says A shares must be “the founder shares” or “the voting shares”. Instead, “A shares” is just a label you choose - and it only matters because of the rights you attach to it.

So when someone asks, “What do A shares mean?”, the real question is:

• What rights do your A shares have?
• How do they differ from any B shares, preference shares, or other classes?

If you’re still early-stage, it’s also worth checking whether you’re using the standard “ordinary shares” structure, or whether you’re starting with (or moving to) multiple classes as your fundraising grows. If you’re weighing up different share classes, the distinctions often overlap with what people mean when they talk about Class A vs Class B shares.

Why Do Startups Use A Shares (And Multiple Share Classes)?

Most startups don’t create multiple share classes just for fun. They do it because it solves a business problem - usually around control, commercial flexibility, or investment terms.

Here are some common reasons UK startups use A shares as part of a broader share structure:

1) To Separate Founder Control From Economic Ownership

A classic scenario is where founders want to:

• bring in investors without giving up too much voting power, or
• reward certain shareholders financially (dividends / exit proceeds) without giving them control day-to-day.

Depending on how you draft your rights, A shares might carry enhanced voting rights, or they might be the “main” voting class while another class carries limited votes.

2) To Create A Clear “Ordinary” Class For Early Shareholders

Many companies use A shares as the “standard” ordinary shares issued to founders and early team members, then introduce other classes later (for example, investor preference shares).

This can make early cap tables simple, while still leaving room to negotiate investment terms later.

3) To Support An Investment Deal (Without Breaking Your Cap Table)

When you raise money, investors may request specific rights - for example:

• priority on exit proceeds (liquidation preference),
• anti-dilution protection,
• consent rights over key decisions, or
• board appointment rights.

Those rights might be implemented through a new share class (often preference shares) or through a combination of share rights + shareholder agreements.

Either way, your original A shares usually become the baseline class everyone compares against.

4) To Match Different Roles In The Business

Sometimes A shares are held by “active” founders and B shares are held by passive shareholders (or vice versa). Or A shares might be for founders, while another class is for an employee incentive pool.

This kind of structure can be workable - but only if it’s properly documented and everyone understands what they’re getting.

What Rights Do A Shares Usually Come With?

The word “usually” is doing a lot of heavy lifting here, because A shares can be whatever you draft them to be. But in practice, A shares are commonly a type of ordinary share, meaning they often carry the “standard” set of rights:

• Voting rights (for example, one vote per share)
• Dividend rights (a right to share in profits if dividends are declared)
• Capital rights (a right to share in proceeds if the company is sold or wound up)
• Pre-emption rights (often included in the articles and/or shareholders agreement; and for private companies, statutory pre-emption rights can also apply by default to allotments of “equity securities” unless they’re disapplied)

However, startups often tweak these “standard” rights to match their commercial goals. When you’re issuing A shares (or negotiating with someone who is), pay close attention to the following categories.

Voting Rights

Voting rights determine who controls shareholder decisions - for example, appointing directors, approving major transactions, or changing the company’s constitution.

A shares might have:

• standard voting (one vote per share),
• weighted voting (more votes per share), or
• limited/no voting (less common for “A” shares, but possible).

Control can also be shaped through a properly drafted Shareholders Agreement, which often sets out which decisions require special approvals even if someone holds a voting majority.

Dividend Rights

Dividend rights decide who can receive a share of profits (if the company declares dividends at all - many startups reinvest profits for years).

You might see A shares with:

• equal dividend rights alongside other ordinary shares, or
• different dividend entitlements (for example, a fixed amount or a different proportion).

If you’re setting dividend rights, you also need to think about future fundraising. Investors often care less about dividends and more about exit outcomes - but inconsistent dividend rights can still create tension among shareholders later.

Capital Rights (Exit / Winding Up)

Capital rights determine who gets paid, and in what order, if the business is sold or wound up.

Most A shares (as ordinary shares) sit behind preference shares in terms of “who gets paid first” if you’ve issued investor preference shares. But within the ordinary classes, A shares might rank equally with other ordinary shares - or differently, if you’ve drafted it that way.

Transfer Rights And Restrictions

Even if your A shares have “ordinary” rights on paper, transfer restrictions can dramatically change how valuable or practical they are.

Common restrictions include:

• board consent requirements before a transfer,
• good leaver / bad leaver rules (often for founders and employees), and
• rights of first refusal (existing shareholders get first chance to buy).

These restrictions often sit in the shareholders agreement, but can also be embedded in your company’s constitution.

How A Shares Affect Founders, Investors And Your Next Funding Round

Share structures aren’t just legal admin - they directly affect negotiating power and how investable your business looks.

Here’s how A shares commonly play into startup growth.

Founders: Protecting Control Without Scaring Off Investors

It’s normal for founders to want control, especially early on when you’re making fast decisions and building product-market fit.

But if your A shares are engineered to give founders too much control (for example, extreme voting rights with minimal checks), that can become a red flag for sophisticated investors.

A more sustainable approach is often:

• keep share rights relatively clean and understandable, and
• use a mix of board structure, reserved matters, and clear governance rules to protect everyone.

Good governance is a value-add in fundraising - it shows you’re building something scalable, not just trying to “win” every clause.

Investors: Clarity Matters More Than Cleverness

From an investor’s perspective, the big issue isn’t whether the company has A shares - it’s whether the rights are:

• clearly documented,
• internally consistent (articles + shareholder documents match), and
• commercially reasonable.

If an investor can’t quickly understand your A share rights, they may push to restructure - which can cost time and legal fees during a raise.

Employees And Option Pools: Don’t Accidentally Create A Mess

If you’re offering equity incentives, you’ll want the share structure to work with whatever plan you’re using (for example, options).

Sometimes companies create a new class (like “growth shares”) for employee incentives, but many use options over ordinary shares. If you’re setting up incentives, you may end up looking at EMI options (where suitable), alongside your share class structure.

Note: Sprintlaw can help with the legal documents around share structures and option plans, but we don’t provide tax advice. If you’re considering EMI options or other equity incentives, it’s worth also getting tax advice to confirm the tax treatment for your business and the individuals involved.

The key is to avoid promising equity that your constitution doesn’t actually support - because fixing it later can be painful, especially mid-fundraise.

Future Rounds: Keep An Eye On How Easy It Is To Add New Share Classes

Most startups will eventually need to create new shares for investors, or vary the rights attached to existing shares.

This usually requires shareholder approvals and updates to your constitutional documents. The smoother your structure, the easier your next round tends to be.

That’s why it’s worth getting your Company Constitution right early - it sets the baseline for how share rights work and what approvals are needed to change them.

What Legal Documents Do You Need When Issuing A Shares?

If you’re issuing A shares to a co-founder, early investor, or employee, it’s not enough to agree on a percentage over coffee and then “sort the paperwork later”.

To keep your business protected from day one, you’ll usually want to think about the following documents and steps.

1) Articles Of Association (Your Share Rights Live Here)

Your articles of association are where share classes and their rights are typically defined. If your A shares have special rights, those rights should be properly set out in the articles (or you risk confusion and disputes later).

This is also where you’ll typically deal with:

• different voting rights by class,
• dividend mechanics,
• ranking on a winding up, and
• transfer restrictions (sometimes supported by a shareholders agreement too).

2) Shareholders Agreement (How You Actually Run The Company)

Even if your articles set out the formal rights, a shareholders agreement usually deals with the real-world “what happens if…” scenarios, like:

• what happens if a founder leaves,
• how decisions are made (reserved matters),
• information rights (reporting to shareholders),
• transfer rules and exit mechanics (drag/tag), and
• dispute resolution procedures.

Without clear rules, it’s easy for small disagreements to turn into business-stalling disputes - and that’s the last thing you want during a fundraise or growth phase.

3) Share Subscription / Share Issue Paperwork

When someone is buying into the company (or subscribing for shares), you’ll usually want documents that clearly show:

• how many A shares are being issued,
• the price paid (or other consideration),
• any conditions attached to the issue, and
• the timing of the allotment.

For investment deals, you may use a Share Subscription Letter (or a more detailed subscription agreement, depending on the round).

4) Company Approvals (Director / Shareholder Resolutions)

Issuing shares isn’t just an agreement between you and the incoming shareholder - it’s a company action that needs to be properly approved.

Depending on your situation, you may need:

• a board resolution approving the allotment, and/or
• shareholder resolutions (for example, to disapply pre-emption rights, or to create/modify share classes).

Putting these approvals in writing is important for record-keeping and for future due diligence. Many startups use a Company Resolution approach to document key decisions properly.

5) Companies House Filings And Statutory Registers

When you allot shares, you’ll also need to stay on top of your filings and internal records, such as:

• filing a return of allotment (typically form SH01) within the required timeframe,
• updating the register of members, and
• issuing share certificates where appropriate.

If this is missed, you can create headaches later when an investor runs due diligence and the cap table doesn’t match what’s been filed.

Common Pitfalls With A Shares (And How To Avoid Them)

A shares can be simple - but issues usually come from unclear drafting, verbal promises, or “we’ll fix it later” decision-making.

Here are some common pitfalls we see in UK startups.

Pitfall 1: Calling Them “A Shares” Without Defining The Rights

If your documents simply say “A shares” but don’t clearly set out what that means, you’re opening the door to disputes.

Fix: Make sure the rights are properly defined in your constitution and consistent across documents.

Pitfall 2: Mixing Up Share Class Labels With Investor Terms

Founders sometimes assume:

• A shares = “ordinary shares”
• B shares = “investor shares”

But investors often want preference shares, not just a different “letter”. A/B class structures and preference share structures are different tools.

Fix: Decide what commercial outcome you’re trying to achieve (control, economics, downside protection), then choose the cleanest structure to achieve it.

Pitfall 3: Forgetting About Tax And Employee Incentives

Even if your share rights look fine legally, the structure can have flow-on effects for:

• employee incentives,
• valuation expectations, and
• tax planning.

Fix: Before issuing shares to employees or setting up options, get advice that considers both the legal structure and the tax consequences. (Sprintlaw can help with the legal side, but doesn’t provide tax advice.)

Pitfall 4: Issuing Shares Without A Proper Paper Trail

If shares are issued informally (no resolutions, missing filings, unclear payment terms), you can end up with:

• a cap table that doesn’t match reality,
• future disputes over ownership, and
• investment delays while everything gets cleaned up.

Fix: Treat every share issue as a proper corporate action and document it clearly.

Pitfall 5: Not Planning For Exits And Transfers

If a shareholder holding A shares wants to sell, leaves the business, or becomes uncooperative, your company can be stuck if you don’t have strong transfer rules and leaver provisions.

Fix: Make sure your shareholders agreement and constitution cover transfers, leavers, and exit mechanics before you need them.

Key Takeaways

• A shares are a share class label, not a fixed legal category - what matters is the rights attached to them in your company documents.
• A shares are often used as the “standard” ordinary shares in startups, but they can be tailored to carry different voting, dividend, and capital rights.
• Multiple share classes can help with founder control and investment deals, but unclear or overly complex structures can slow down fundraising.
• When issuing A shares, make sure your articles of association, shareholders agreement, share issue documents, and company approvals all match and are properly documented.
• Common pitfalls include undefined rights, messy paperwork, and failing to plan for transfers/leavers - all of which can create serious issues during due diligence.

If you’d like help setting up your share structure, issuing A shares, or preparing for an investment round, you can reach us at 08081347754 or team@sprintlaw.co.uk for a free, no-obligations chat.