Managing Underperforming Co-Founders: Legal Strategies For Australian Startups

Nothing tests a startup’s resilience like a co-founder who has stopped pulling their weight. It’s sensitive, it’s personal, and it can put your company’s future at risk if you don’t act decisively and fairly.

The good news is there are clear legal and practical steps you can take to reset expectations, restructure roles, or-if needed-manage a clean exit while protecting your startup’s brand, IP and runway.

In this guide, we’ll walk through how to prevent co-founder issues with strong foundations, how to diagnose underperformance fairly, and the main legal pathways for resolution in Australia. We’ll also unpack share mechanics, director considerations and documentation you’ll likely need along the way.

If you’re dealing with this now (or want to avoid it altogether), keep reading-there’s a path forward.

Why Co-Founder Performance Matters In Australia

Founders are usually both owners and leaders. When a co-founder underperforms, it impacts delivery, morale and fundraising-investors will quickly spot misalignment in the leadership team.

If your co-founder is also a director, you’ve got added responsibilities. Directors owe legal duties under the Corporations Act 2001 (Cth), including to act in good faith in the best interests of the company and with care and diligence. Even if someone is a “non‑executive” founder, they still need to meet commitments the team and investors rely on.

Handling this well is about process as much as outcome. A fair, documented approach protects the business, reduces dispute risk and demonstrates mature governance to current and future stakeholders.

Prevention First: Set Founders Up For Success

You’ll save time, money and relationships if you get your founder setup right from day one. Think of this as “dispute-proofing” your startup.

Set Clear Roles, KPIs And Decision Rights

• Define who owns which outcomes (not just job titles). Tie responsibilities to measurable KPIs across product, revenue, operations, finance or fundraising.
• Agree how decisions are made (unanimous vs majority, CEO veto for operational calls, board reserved matters, etc.).
• Build in regular performance check-ins and feedback rhythms so concerns are surfaced early.

Lock In Your Governance Documents

Two documents do the heavy lifting for founder alignment and dispute resolution: a Founders Agreement (usually used pre-incorporation) and a Shareholders Agreement (once the company is set up).

• These set expectations around roles, equity, decision-making, dispute processes and what happens if someone leaves or underperforms.
• They are also where you’ll bake in drag‑along/tag‑along rights, pre‑emptive rights, buy‑back triggers and valuation methods (more on this below).

Use Vesting To Align Equity With Contribution

Time‑based vesting (with a cliff) and performance‑based vesting keep equity aligned with actual contribution. A Share Vesting Agreement can cover good leaver/bad leaver definitions, unvested equity treatment, and triggers like serious misconduct, sustained underperformance or breach of obligations.

Agree On A Practical Dispute Pathway

A good dispute clause de‑escalates: internal negotiation → mediation → binding outcome (such as buy‑back/sale or chair’s casting vote for specific matters). The best time to agree these rules is before there’s a problem.

Diagnosing Underperformance Fairly

Before you change roles or move to an exit, run a fair and clear process. This protects the company and reduces the chance of a messy dispute later.

• Clarify expectations again in writing. Reference your KPIs, role description and any previous agreements.
• Set a performance improvement plan (PIP) with specific goals, support and a realistic timeframe. Keep notes and confirm discussions over email.
• Consider whether the role is the problem (e.g. the founder’s strengths now fit partnerships rather than product). A well-considered role shift can be a win‑win.
• Manage conflicts of interest. If the founder is also a director, board-level oversight (and recusal where appropriate) may be needed.
• Protect confidentiality and morale. Use need‑to‑know communications within the team and keep investors informed in a measured, professional way.

If performance doesn’t improve-and the business is being harmed-you’ll want to move into a structured legal pathway.

Legal Pathways To Resolve Co-Founder Underperformance

Your options depend on your company constitution and founder agreements. Most solutions fall into four buckets: change the role, change the equity, change the cap table, or end the relationship with a structured exit.

1) Adjust Role And Authority (Without Changing Equity)

If contribution issues are specific to a role, you can reallocate responsibilities, adjust titles, and tighten decision rights. Update any director letters or executive agreements to reflect the new scope and reporting lines.

2) Renegotiate Vesting Or Equity Split

If equity no longer reflects contribution, founders can agree to extend vesting, add performance hurdles, or partially cancel unvested equity. This requires careful drafting and board/shareholder approvals in line with your agreements. If things are tense, consider independent valuations and a short mediation to reach a principled outcome.

3) Transfer Or Buy Back Shares

Where a founder will step back or exit, you’ll usually rely on transfer or buy‑back mechanisms in your agreements.

• Pre‑emptive rights: Existing shareholders often get first right to buy shares before they’re offered more widely.
• Valuation: Your documents may set a method (e.g. independent valuer, revenue multiple or book value). If not, now is the time to agree one. For context and options, see valuing shares.
• Documentation: You may use a share sale or buy‑back agreement, resolutions and updated registers. ASIC notifications and timing rules apply for buy‑backs and transfers.

If you’re proceeding with a transfer, make sure your process aligns with director and shareholder approvals, stamp duty rules (state‑based) and ASIC filing requirements-our guide to ASIC transfer of shares sets out the common steps.

4) Remove As Director Or Shareholder (As A Last Resort)

Sometimes, you need to change the cap table or board to move forward. Depending on your agreements and the Corporations Act processes, options can include board changes or share transfer triggers for serious breach or sustained underperformance.

It’s critical to follow the correct procedure. Voting thresholds, notice periods and fair value rules all matter here. For a deeper look at pathways and pitfalls, see removing a shareholder.

Exit Packages And Protections

If an exit is agreed, document it cleanly to protect both sides and the business:

• Deed of release/settlement: A well‑drafted deed finalises claims and confirms confidentiality, IP assignment, and a non‑disparagement promise. Here’s a practical overview of a Deed of Release and Settlement.
• Post‑exit obligations: Confirm return of property and data, ongoing confidentiality and any reasonable restraints to protect customers, staff and know‑how.
• Communications plan: Agree a joint statement for staff, customers and investors to preserve goodwill and minimise speculation.

Equity And Share Mechanics In Practice

Once you’re aligned on the commercial pathway, map out the legal and administrative steps so nothing falls through the cracks.

Step 1: Check Your Constitution And Agreements

Start with your Shareholders Agreement, company constitution and any vesting or option documents. Confirm transfer restrictions, buy‑back clauses, valuation methods, leaver definitions and required approvals (board vs shareholder, special resolutions, etc.).

Step 2: Confirm Trigger Events And Valuation

Your documents may define “bad leaver” or “cause” with a specific pricing outcome (e.g. lower price for unvested or recently vested shares). If not, agree a fair valuation methodology and appoint an independent valuer if needed. Document the valuation approach and assumptions to avoid future disputes.

Step 3: Choose A Transaction Structure

• Share transfer: The exiting founder sells shares to remaining founders or the company’s nominee.
• Share buy‑back: The company buys the shares and cancels them (subject to Corporations Act rules on processes, solvency and timing).
• Forfeiture/cancellation: For unvested or specific leaver scenarios under a vesting deed.

Each structure has different tax, ASIC and timing implications. Build your timeline around approvals, funding the purchase price, and regulatory filings.

Step 4: Document, Approve And File

• Prepare transaction documents (e.g. share sale or buy‑back agreement), board and shareholder resolutions, and updated registers.
• Execute in line with section 127 signing rules and your constitution.
• Lodge required ASIC forms within deadlines and update your cap table.

Getting these mechanics right is just as important as the headline commercial terms-small mistakes can cause big compliance headaches later.

Communication, Confidentiality And Risk Management

People issues can quickly become brand issues. Managed well, an underperformance matter can be resolved quietly and professionally.

• Confidentiality: Use an NDA for any sensitive discussions with potential replacement leaders or investors. Reiterate ongoing confidentiality obligations in any exit deed.
• IP ownership: Make sure IP created by the exiting founder is clearly assigned to the company and that access to code, accounts and tools is transferred. If gaps exist, use a targeted IP Assignment.
• Non‑disparagement: Prevent reputational damage on both sides with a reasonable, mutual commitment. For context on how these clauses work in practice, see non‑disparagement agreements.
• Restraints: Where appropriate and lawful, include a reasonable restraint to protect customers, staff and confidential information. Tailor scope, time and geography-our team can guide you through practical restraint of trade advice.
• Data and security: Disable access promptly, collect devices, and rotate credentials (especially if the founder had admin rights). Document handover of critical information and relationships.

Finally, agree a simple communications plan. Decide what you’ll say internally and externally, who will say it, and when. Consistency builds trust.

Governance Tips To Keep Your Startup On Track

Even if you’re not facing an issue today, put these habits in place to keep things healthy as you scale:

• Run regular board or leadership meetings with concise reporting and clear action owners.
• Revisit founder KPIs quarterly as the business evolves-seed‑stage roles often differ from Series A roles.
• Keep your cap table tidy and ensure equity documents are fully executed and stored securely.
• Use short, written follow‑ups after key conversations to capture decisions and next steps.
• When in doubt, get early advice-small course corrections are far easier (and cheaper) than late‑stage rescues.

Key Documents You’ll Likely Need

Every situation is unique, but these documents commonly feature in co‑founder underperformance matters:

• Founders Agreement or Shareholders Agreement: Sets expectations, decision‑making and exit pathways (including triggers and valuation).
• Share Vesting Agreement or Option Deed: Aligns equity with contribution and defines leaver outcomes.
• Board And Shareholder Resolutions: Approve transfers, buy‑backs, role changes and director appointments/removals. A simple directors resolution template can be a helpful starting point.
• Share Sale or Buy‑Back Agreement: Documents the transfer or cancellation mechanics and price.
• Deed Of Release And Settlement: Finalises the exit and clarifies ongoing duties (confidentiality, IP, non‑disparagement and restraint).
• Confidentiality And IP Assignment: Covers any loose ends around information and ownership.
• Internal Policies And Access Checklist: Ensures a smooth, secure handover of systems and accounts.

Frequently Asked Questions

Do We Need Investor Consent To Change A Co-Founder’s Role Or Equity?

Check your Shareholders Agreement and any investor side letters. Many documents include reserved matters requiring investor consent for equity changes, buy‑backs or board reshuffles. Build this into your timeline.

What If Our Documents Don’t Cover Underperformance?

You can still negotiate a commercial solution and then document it properly. In the absence of clear mechanisms, focus on principled valuation, fair process and securing the approvals your constitution and Corporations Act require.

What Are The Main Steps To Transfer Shares?

Confirm agreement terms and approvals, settle valuation and consideration, execute the transfer instrument, update the register, and lodge any ASIC forms within time. If you’re mapping your process, this compliance-focused guide to ASIC transfer of shares is a helpful reference point.

Can A Founder Be Removed As A Shareholder?

Only if your documents allow for it (e.g. compulsory transfer on defined triggers) or by agreement. It’s a high‑stakes step-review your options, required thresholds and fair value rules before moving ahead. For pathways and risks, read more about removing a shareholder.

Key Takeaways

• Prevent co‑founder disputes by setting clear roles, KPIs and decision rights, and by locking in a strong Founders Agreement and Shareholders Agreement with vesting.
• Run a fair, documented process to diagnose underperformance-restate expectations, set a PIP, and consider role realignment before moving to structural changes.
• Legal resolution pathways include adjusting roles, renegotiating vesting, transferring or buying back shares, or-if necessary-changing the board or cap table.
• Get the mechanics right: check your documents, confirm valuation, secure approvals, and complete filings-resources on valuing shares and ASIC transfer of shares can help you plan.
• Protect the business with clean exit documentation (including a Deed of Release and Settlement), ongoing confidentiality, IP assignments and reasonable restraints.
• Early, tailored legal advice will help you choose the right path, reduce risk and preserve relationships where possible.

If you’d like a consultation on managing an underperforming co‑founder in your Australian startup, you can reach us at 1800 730 617 or team@sprintlaw.com.au for a free, no‑obligations chat.