Why Most Startups Die Between Seed and Series A
The 18 months after your seed round are the most dangerous period in a startup's life. Here is what kills companies and how to avoid it.
About 70% of seed-funded startups never raise a Series A. This is not a failure of the founders. It is a failure to understand what the seed-to-A journey actually requires.
After talking to hundreds of founders, both successful and unsuccessful, the patterns are remarkably consistent. The companies that die between Seed and Series A almost always die for the same reasons.
The Three Killers
1. Building without selling. The most common mistake. Founders raise a seed round, hire engineers, and disappear into a building phase for 12 months. They emerge with a polished product and zero customers. By then, they have 6 months of runway left and no traction to show Series A investors.
The fix is simple but uncomfortable: sell before you build. Get letters of intent. Get design partners. Get someone to pay you something, even a small amount, before you write a single line of code. The companies in our portfolio that reached $1M ARR fastest all had paying customers before they had a finished product.
2. Hiring too fast. Seed money feels like a lot until you hire four engineers at market rate. Suddenly your 24-month runway is 10 months. Every hire at the seed stage should be existential. If this person does not directly contribute to reaching your next milestone, do not hire them.
3. Losing focus. A startup's greatest advantage is focus. When you have five people, you can move faster than a 500-person company because you are solving one problem. The moment you start chasing three different customer segments or building two different products, you lose that advantage. Pick one thing. Win at that thing. Then expand.
What Series A Investors Actually Want
Series A investors want evidence that the business can scale. Not revenue projections. Not TAM slides. Evidence.
That means: growing revenue, ideally $1-2M ARR or clear trajectory toward it. Low churn, proving customers actually need what you built. Efficient growth, showing you can acquire customers without burning your entire bank account. A clear path to $10M+ ARR that does not require reinventing the product.
The Timeline That Works
Months 1-3 after seed: validate demand. Talk to 50 potential customers. Close your first 3-5 paying customers. Do things that do not scale.
Months 4-9: find the repeatable sales motion. What type of customer buys? How do they find you? How long is the sales cycle? Optimize ruthlessly.
Months 10-15: scale what is working. You should know your numbers cold by now. CAC, LTV, churn, payback period. If the numbers work, pour fuel on the fire.
Months 15-18: raise Series A from a position of strength. If the numbers work, the round will come together fast. If they do not, you know it is time to pivot or extend runway.
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