The standard practice is to give equity based on the percentage of fully diluted shares. However, percentages can't be included on offer letters because the number of shares at a company change over time.

Pulley includes an % Shares Calculator to make the conversion between % and number of shares easy.

What's included in the denominator for fully diluted?

Fully diluted includes the entire option pool (assuming it's granted) and all shares (preferred & common). Fully diluted does not include equity given to investors in SAFEs because the SAFEs is have not converted. For SAFEs without caps or on a discount, it's impossible to know until the priced round valuation how many total shares will be fully diluted.

Click on % Shares Calculator to try Pulley's calculator.

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