Cofounder breakups are one of the top causes of early-stage company failure. Not market timing, not competition, not running out of money—though those happen too. The dynamic between two or three people who thought they were aligned and turned out not to be.
We've seen it from every angle. We've invested in companies where it happened, watched the fallout, and helped founders navigate it. We've also passed on companies where the cofounder setup was so fragile we couldn't get comfortable with the risk. This post is about the conversations that prevent the worst outcomes—the ones most founding teams avoid until it's too late.
The Equity Conversation
The first thing to settle, before anything else, is equity. Not roughly. Precisely. Who owns what percentage of the company, documented in a shareholders agreement or founders' agreement, with every share subject to a vesting schedule.
Standard founder vesting is a four-year schedule with a one-year cliff. That means in year one, you earn nothing. At the one-year mark, 25% vests at once. Then monthly vesting for the remaining three years. If someone leaves before their cliff, they walk away with zero. If they leave after two years, they've earned half their equity.
Cofounders who resist vesting are sending a signal. It might not be a bad signal—sometimes it's just unfamiliarity with how this works. But the conversation about why vesting matters is worth having before you're incorporated, not after.
The Role Conversation
Who does what? Not at a high level. Specifically. Who owns product decisions? Who owns hiring decisions? Who speaks to investors? Who manages the board, once there is one?
The most common version of this problem we see is two cofounders with overlapping roles and no clear decision authority. Both have opinions on product. Both have opinions on hiring. When they agree, it works fine. When they disagree, there's no mechanism to resolve it and the company stalls.
You don't need an org chart. You need an honest conversation about who has final say in which domains, written down in enough detail that you'll both remember it when you're stressed and exhausted six months from now.
The Vision Conversation
This one is harder because it feels abstract. But we've watched companies fall apart over a fundamental disagreement about what the company should become that neither founder wanted to surface directly.
Ask your cofounder: what does this company look like in seven years? Not a pitch answer—an honest one. Is this a lifestyle business if it gets to a certain size, or is it a swing-for-the-fences venture-backed company that either gets very large or fails? Are you building to exit quickly or to run this company for a decade? How do you feel about taking on institutional capital and the constraints that come with it?
These are the questions that get hard when the answers diverge. Better to find the divergence now.
The Conflict Conversation
How will you handle disagreements? Not in theory. In practice. What does it look like when you two fundamentally disagree about a major decision?
The best founding teams we've worked with aren't the ones who never disagree—they're the ones who fight hard and then commit fully to whatever they decide. That requires a shared understanding of how decisions get made.
Some teams use a "CEO has final say on all decisions" model. Others use domain ownership (CTO owns all technical decisions, CEO owns all business decisions). Others use a consensus model with a tie-breaking mechanism. None of these is universally right. The right one for you depends on your personalities and your specific skills. But you need one.
The "What If" Conversation
What if one of you gets a compelling job offer from a company you've both admired for years? What if one of you wants to sell and the other doesn't? What if someone's life circumstances change—a health issue, a family situation—and they can't contribute at the same level for a period?
These scenarios aren't hypothetical. Some version of them happens in most founding teams at some point. The founders who handle them well are the ones who talked about them before they happened.
This doesn't have to be a dramatic conversation. It can be a practical one. But it has to happen.
Why Investors Care About This
When we do diligence on a pre-seed company, cofounder dynamics are near the top of our list. Not because we're looking for problems, but because we're trying to understand whether this team can sustain a multi-year working relationship under significant stress.
The best signal we can get is that these conversations have already happened and you can tell us directly how you've resolved them. The worst signal is deflection—"we've been friends for ten years, we'll figure it out."
Friendship is a good foundation. It's not a governance structure.
If you're working through cofounder dynamics and want an outside perspective, email us. [email protected]. These conversations are worth having with someone who's seen how they tend to go.
