What to Do When Your Co-Founder Stops Responding

It starts with a missed call. Then a few unreturned messages. Then weeks of silence.

A co-founder going dark is one of the most disruptive things that can happen to an early-stage company. It creates legal uncertainty, stalls decision-making, and leaves the remaining founders in an impossible position.

The business still needs to run. Contracts need signing. Payroll needs approving. Investors need updates.

This guide walks you through what to do, in the right order, before things become a crisis.

Why This Is Harder Than It Sounds

A co-founder is usually both a director and a shareholder. Those are two separate roles, each governed by different rules.

You may be able to remove them as a director. You almost certainly cannot force them to sell their shares.

That distinction matters enormously and shapes everything that follows.

Follow this Step-by-Step guide

Step 1: Document Everything Before You Do Anything

• Before taking any formal action, build a written record of the situation. This is not about being aggressive. It is about protecting yourself and the company if things escalate later.
• Record every attempt to contact the missing co-founder, including dates, methods, and any responses received.
• Send written communications by email rather than phone or message, so there is a clear trail.
• Hold board meetings as normal and record the co-founder's absence in the minutes.
• If you are the only active director, you can still hold board meetings and record decisions. That is your right under the Companies Act 2014.

The record you build now becomes the evidence you rely on later, whether in a negotiated exit, a shareholder dispute, or a court process.

Step 2: Check Your Constitution and Any Shareholder Agreement

In our experience, most founders skip this step. Do not skip this step.

Your company's constitution may contain provisions that deal directly with this situation.

Some constitutions include automatic vacation of office provisions under Section 148 of the Companies Act 2014, which can apply if a director is absent from board meetings without permission for a defined period, typically six months.

Some shareholder agreements include leaver clauses, which define what happens to a co-founder's shares if they abandon the business.

Good leaver and bad leaver provisions often give the company or remaining shareholders the right to buy back shares at a set price if a founder leaves without agreement or stops performing.

If your shareholder agreement has these clauses, they are your fastest and cleanest route to resolution.

If you have neither a shareholder agreement nor relevant constitutional provisions, you are working with the default position under company law, which gives you fewer options.

Step 3: Make Formal Written Contact

Before removing anyone from anything, you need to demonstrate that you tried to resolve the situation.

• Send a formal letter or email to the co-founder's last known address, clearly setting out the problem.
• State that the company requires their engagement, specify what decisions are pending, and give a reasonable deadline for a response.
• If there is no response, send a second communication confirming the lack of engagement and noting that the company will be taking steps to protect the business.
• Keep copies of everything.

This step is not optional if you want to avoid a claim later that you acted unfairly or without proper notice.

What You Can Do Unilaterally as a Director

If you are a fellow director, not just a shareholder, there are some things you can do without shareholder approval.

Day-to-day management decisions sit with the board. If the board has quorum without the missing co-founder, which in most small companies requires just one director, you can continue making operational decisions, signing contracts within your authority, and running the business.

You can also record those decisions properly in board minutes, which protects you from any later suggestion that you acted outside your authority.

What you cannot do unilaterally is remove the co-founder as a director. That requires a shareholder resolution.

You also cannot force the co-founder to sell their shares. Even a completely absent co-founder retains their shareholding unless a shareholder agreement or court order says otherwise.

When You Need Shareholder Approval

Certain decisions require a formal resolution of the shareholders, regardless of how unresponsive one of them is. Removing a director under Section 146 requires an ordinary resolution, meaning more than 50% of the votes cast at a properly convened EGM.

Amending the company constitution requires a special resolution, meaning 75% of votes cast. Approving certain payments or transactions also requires shareholder sign-off under the Companies Act 2014.

If the missing co-founder holds 50% or more of the shares, passing any resolution that they oppose, or fail to participate in, becomes legally complicated.

In that scenario, you may need to apply to the court under Section 212, which deals with oppression and unfair prejudice. This is a serious step and not one to take without proper advice.

What Happens If the Co-Founder Has Already Vacated Office

Section 148 of the Companies Act 2014 sets out the circumstances in which a director automatically vacates office.

One of those circumstances is where the company's constitution provides for vacation after a defined period of unexplained absence from board meetings.

If your constitution contains such a provision and the threshold has been met, the co-founder may already have ceased to be a director by operation of the constitution, without any vote being required.

Check this carefully. If it applies, record the vacation of office formally in the board minutes and file a Form B10 with the relevant company registry to update the public record.

Can You Dilute the Missing Co-Founder's Shares?

In theory, yes. In practice, this is risky territory.

• Issuing new shares to dilute a co-founder's stake requires board and shareholder approval.
• If the new shares are issued at below market value, or if the primary purpose is to dilute a specific shareholder rather than to raise capital, the remaining shareholders could face a legal challenge.
• Courts take a dim view of share issuances designed to punish or squeeze out a co-founder, even an absent one.
• Unless the allotment is genuinely for a legitimate commercial purpose and properly approved, it is not a path to recommend.