Calculation method
Normalize the current fully diluted total to 100. If c is the current unallocated pool percentage and t is the higher target percentage of the expanded total, new pool units x = (100t - 100c) / (100 - t). Each existing holder then retains 100 / (100 + x) of its prior percentage. If the entered target is not above the current pool, no new units are added.
Worked example
Moving an entered unallocated pool from 5% of the current fully diluted total to 10% of the expanded total requires new pool units equal to about 5.56% of the current total. Each existing holder retains about 94.74% of its prior ownership percentage under that assumption.
What the result excludes
The result does not determine the financing denominator, pre-money or post-money treatment, granted-option treatment, fully diluted capitalization, share count, approvals, filings, plan terms, tax, or who actually bears dilution.
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