Seed dilution simulator
Pre-seed committed $4.00M · lead Headline
If you raise your seed round on these terms…

Where your company goes

Same colours in both bars. Watch your green slice shrink as investors and the option pool come in.
Before the seed (pre-seed investors converted)You 76%
After the seedYou 58%

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 Alsid→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.
Who Cheque End of
pre-seed
End of
seed
“End of pre-seed” is each investor's locked stake once the SAFE converts (cheque ÷ the cap). “End of seed” is fully diluted after the seed round. Investors get diluted by the seed round; that drop is expected.