Model unmodified US YC post-money cap-only SAFEs and one priced round. This narrow model excludes discounts, MFN, pre-money SAFEs, notes, amendments, pro-rata, promised options and multiple preferred prices.
Round pre-money includes converted SAFEs and the financing pool top-up. Existing shares, granted options and the existing available pool do not overlap. Financing top-up is excluded from SAFE capitalization but included in round pricing.
Each SAFE converts at the lower of its cap price and the priced-round price. Investment divided by cap is conditional pre-round ownership, not ownership after the new round. Outputs include fully diluted fractional shares and unissued pools, not closing rounding, liquidation or tax outcomes.
With 9,000,000 existing shares, a $1,000,000 SAFE at a $10,000,000 post-money cap, a $20,000,000 round pre-money valuation, $5,000,000 new cash and no pool top-up, existing shares hold 72%, the SAFE holds 8% and new investors hold 20% after the round.
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