Seed dilution simulator
Pre-seed committed $4.10M Β· lead Headline
If you raise your seed round on these terms…
you keep 57% of your company.

Where your company goes

Same colours across both bars β€” watch your blue slice shrink as investors and the option pool come in.
Before the seed (pre-seed investors converted)
After the seed

The valuation lever

Founder ownership after the seed, for each pre-money valuation (rows) and raise size (columns). Greener = you keep more. The outlined cell is you.

What good looks like in 2026

  • Repeat / proven founders (your Alsidβ†’Tenable pedigree qualifies) sell 10–15% at seed. First-timers give up 20–25%.
  • Keep founders above 50% going into Series A. The Carta median is 56% right after seed.
  • Dilution follows the dollars you raise vs your valuation, not the round's name. Raise less, or raise it higher.
  • An option pool of ~10% is the norm. Carved before the money, it comes out of you, not the seed investor.