The Overfunding Trap: Why Raising Too Much Money Can Harm Your Startup
Investor Sergey Gribov from Flint Capital warns founders about the dangers of raising excessive funds too early, leading to overvaluation.

The overfunding trap is a common issue in venture capital, affecting both founders and investors. Inflated valuations, especially those from the boom in 2021, continue to impact startups, and with AI startups attracting aggressive multiples, this problem is resurfacing.
While securing funding may seem like a good opportunity, founders should exercise caution. Accepting too much money too early can set startups up for failure. Here’s why.
Causes of Overvaluation
Several factors contribute to inflated valuations. For example, second-time founders often secure higher valuations due to their experience, network, and lower perceived risk. Market forces also play a role; when demand from investors exceeds the supply of startups, valuations tend to rise.
A great example of this is Israel. Despite a decline in local venture capital funding, foreign investors have significantly increased their early-stage investments in Israeli cybersecurity startups. In 2024, cybersecurity companies in Israel raised $4 billion, up from $1.89 billion in 2023.
Exit opportunities are also rising, with $4.5 billion in cyber M&A activity last year and 20 active cybersecurity unicorns valued at $61 billion. The heightened investor demand creates a valuation premium, with Israeli startups commanding up to 40% higher valuations than their U.S. counterparts, fueled by a self-reinforcing ecosystem.
The Problem with Overvaluation
Overvaluation presents problems during later funding rounds. Founders may face higher dilution, struggle to secure additional funding, and often find themselves forced into extension rounds rather than successfully raising Series A or B capital. Raising too much money too early also leads to high burn rates, reducing capital efficiency and making it harder to scale sustainably.
For instance, if a startup raises $3 million at a $12 million post-money valuation, and its revenue grows to $800,000 or $900,000 ARR, it could raise a Series A round at $25 million. But if the same startup raised its seed round at a $25 million post-money valuation, it might hit a valuation ceiling in the next round.
This situation is common in Israel, where startups often raise seed rounds locally at inflated valuations but seek U.S. funding for Series A. As a result, they lose the local market premium, often forcing them into a flat round at their previous valuation.
The Extension Round Dilemma
Rather than accept a flat or down round, many founders opt for extension rounds. These allow additional capital to be raised without resetting the valuation. While this can provide temporary relief, it often just delays the inevitable. If traction doesn’t improve, future fundraising becomes even more difficult.
What Can Founders Do?
Founders should take these steps to avoid the overfunding trap:
- Raise Only What You Need: Taking too much capital early on limits flexibility and creates a false sense of security, leading to overspending.
- Prioritize Capital Efficiency: If overvaluation has already happened, adjust expenses and extend your runway strategically.
- Be Willing to Reset Your Valuation: Although painful, a flat or down round is often the healthiest path forward.
Demystifying Down Rounds and Why They Matter
Founders often avoid down rounds due to the fear of dilution, and investors hesitate because it forces tough decisions. However, in many cases, a valuation reset is the healthiest choice. Smart investors understand that keeping founders motivated is more important than protecting early-stage backers. To align interests, some investors offer additional incentives for key team members post-down round.
Flat and down rounds are more common than people think, but they are rarely publicized. What truly matters is long-term viability. If the team is strong, the product is solid, and the traction is real, investors will continue to show interest. A well-executed valuation reset can position a company for sustainable growth and help avoid the risks associated with overfunding.