DILUTION
MODELER
See how founder ownership dilutes across successive funding rounds.
Funding rounds
Founder ownership over time
After all 3 rounds modeled above, this is what the founder retains — down from 100% before any raise.
What this calculator does
Every priced funding round issues new shares to new investors, which reduces — dilutes — the percentage every existing shareholder owns, even though their share count doesn't change. This calculator models founder ownership across a sequence of rounds you define, showing the dilution at each stage and the cumulative result.
Key terms
Pre-money valuation: the company's value before the new round's capital is added. Dilution: the reduction in an existing shareholder's ownership percentage caused by new shares being issued, regardless of whether they sell any shares themselves.
Related tools
Model is clear. Close the round with Lengdon — a structured sequence both parties execute, and one sealed record both parties can always see.
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