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Fundraising & equity

Dilution

Dilution is the reduction in your ownership percentage when a company issues new shares, typically in a funding round or when expanding the option pool.

Updated July 2026

Key takeaways

  1. Dilution is the reduction in your ownership percentage when a company issues new shares, typically in a funding round or when expanding the option pool.
  2. Every raise, option grant, and convertible conversion dilutes you, and it compounds across rounds.

What is dilution?

Dilution is the reduction in your ownership percentage when a company issues new shares, typically in a funding round or when expanding the option pool. Your share count stays the same, but the total pie grows, so your slice shrinks. It's a normal cost of raising capital, not inherently bad if the company's value rises faster.

Worked example

A founder owning 50% before a round that sells 20% of the company to new investors ends up owning about 40% afterward.

Why it matters for fast-growing companies

Every raise, option grant, and convertible conversion dilutes you, and it compounds across rounds. The goal isn't avoiding dilution, it's making sure each round buys enough growth that your smaller slice is worth more. Model dilution before you raise so you know where founder ownership lands by exit.

Frequently asked questions

Is dilution always a bad thing?+
No. Dilution is bad only if the capital doesn't create enough value to offset it. Owning 40% of a company worth $100M beats owning 80% of one worth $5M. Smart founders accept dilution when the money fuels growth that raises the value of their smaller stake.
How can founders minimize dilution?+
Raise only what you need, negotiate valuation and option-pool sizing carefully, and use instruments like SAFEs thoughtfully since they convert later and stack up. Hitting milestones between rounds raises your valuation, so each dollar you raise costs less equity. Anti-dilution protection also matters, though it usually favors investors.

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