The Cap Table Is Not the Deal: What a Shareholder Agreement Must Decide

A cap table can show who owns the issued equity. It does not reveal who must fund the next shortfall, which decisions need consent, what happens when a founder stops working, or how an owner can leave without destabilising the company.

That missing architecture is often discovered at the least useful moment: during a financing, a departure or a dispute.

Fact: ownership is only one layer of the arrangement

The legal documents and the operating reality have to be read together. UK Companies House describes articles of association as the company’s internal rulebook and explains that they govern how members and directors take decisions in its incorporation guidance. A separate shareholder agreement may add private commitments, but its effect depends on the entity, the governing law, the parties and the wider document set.

Some statutes make the interaction unusually consequential. Under section 146 of the Canada Business Corporations Act, a qualifying unanimous shareholder agreement can restrict directors’ management powers. To the extent it does, the shareholders given those powers also take on specified director rights, duties and liabilities. That is a Canadian federal example, not a cross-market rule, but it reveals the blindspot: reallocating control may reallocate responsibility.

The evidence set may include the constitution, certificate, articles or bylaws, shareholder agreement, subscription documents, board and shareholder approvals, securities register, option records, bank mandates and side letters. The decision-rights guide explains how to map authority across them.

Signal: the agreement describes percentages, not decisions

A signal suggests a hidden dependency; it is not proof of a defect. Test it against executed documents and current practice.

• The agreement repeats the cap table but does not distinguish board, owner and executive authority.
• “Major decision” appears without a list, threshold, materiality test or response deadline.
• Future funding is expected, but there is no process for a founder who cannot or will not contribute.
• Equity can be issued without an agreed notice, information or participation process.
• A founder is expected to work full-time, yet departure, reduced involvement and long-term absence have no defined consequences.
• Transfer clauses control a sale but say little about death, incapacity, insolvency, relationship breakdown or an unwanted third-party transferee.
• A valuation formula exists without a valuation date, information standard, valuer-selection process or funding mechanism.
• The agreement assumes every owner will remain a director and employee.
• Side conversations contain important promises that never reached the signed documents or formal approvals.

Counter-signals

Clarity is more likely where the owners can locate the current signed set, explain how each important decision is made, reconcile it with company records, and run departure and funding scenarios without inventing missing steps. That does not establish legal effectiveness. It is evidence of alignment between the paper and the operating pattern.

Action: make the agreement answer nine decision sets

Use this as an issue map for qualified drafting and review, not as substitute wording.

1. Governance. Who nominates and removes directors? What are quorum and voting rules? Which matters belong to management, the board or owners? How are conflicts handled?
2. Reserved matters. Which genuinely consequential actions require enhanced consent: new securities, major borrowing, related-party transactions, a business sale, a change of business or disposal of core intellectual property? Define scope, threshold and urgency rather than relying on “material.”
3. Information. What financial, operational and cap-table information is delivered, in what form and when? What access is permitted, and how are confidentiality and privilege protected?
4. Funding and dilution. Is a cash call an obligation, an option or only a discussion trigger? What happens if one owner does not participate? Address loan terms, new equity, pre-emption or other dilution mechanics with tax and securities advice.
5. Founder contribution. Separate salary, services, intellectual property, expenses, shareholder loans and equity. The contributions and vesting guide provides an evidence ledger.
6. Transfers. Map permitted transfers, first-offer or first-refusal processes, tag and drag mechanics, competitor restrictions, indirect transfers and the treatment of security interests. Test each timeline and notice step.
7. Exit events. Treat voluntary departure, dismissal, death, incapacity, insolvency and breach as different variables. Define the interest affected, valuation path, payment timing and transition duties. See the continuity guide.
8. Deadlock. Define the event narrowly, preserve routine operations, require an evidence pack and provide staged escalation before any terminal remedy. A 50/50 structure needs its own deadlock design.
9. Change and enforcement. State how the agreement is amended, how notices are given, which law and forum apply, which provisions survive, and how the agreement interacts with constitutional documents and later financing papers.

Build a one-page schedule beside the agreement:

Then test the architecture against three unfriendly but plausible scenarios: one owner refuses urgent funding; one founder leaves but keeps shares and system access; and a buyer wants the whole company while one minority holder objects. Record the answer from the documents, not from memory.

The lesson in the oral-variation case study is useful here: an operating conversation and an enforceable change may not be the same thing.

Limitations: the document cannot be assessed in isolation

Entity statutes, fiduciary duties, securities rules, employment law, tax, insolvency law, marital or estate rules and mandatory filing requirements vary. A provision may be invalid, ineffective against a third party, or inconsistent with another document. Remedies and labels also differ across markets.

The official sources linked above were checked on 12 August 2026. The Canadian provision applies to corporations governed by that federal Act; the UK guidance describes UK company documents. Neither should be transplanted into another entity or jurisdiction without qualified advice.

This is general information, not legal or professional advice. Law and facts vary. Consult qualified advisers for a specific situation.