Option Pool Shuffle Calculator

Background.

The practical question behind Option Pool Shuffle Calculator is whether you can solve the pre-money top-up needed to reach a negotiated post-money ungranted-pool percentage. In this context, a pre-money option-pool increase dilutes existing holders because the new investor prices against the expanded fully diluted capitalization. The calculator therefore applies “solve pre-money pool top-up shares so the ungranted pool reaches the entered post-money fully diluted percentage.”

The editable entries are pre-money valuation, new primary investment, existing pre-financing fully diluted shares, existing ungranted option-pool shares, target ungranted pool as percent of post-money fully diluted shares. Use values from the document or measurement that governs this option pool shuffle question; the defaults are only the worked fixture below. Outstanding grants, promised options, convertible securities and whether the target is pre- or post-money must match the term sheet. That option pool shuffle boundary is part of the answer, not a generic disclaimer.

National Venture Capital Association, Model Legal Documents; preferred-stock financing terms documents the convention or governing rule used here. The option pool shuffle output is a transparent scenario under those facts: it does not manufacture an unentered market price, professional determination, carrier quote, legal eligibility finding or locally adopted code value.

What is option pool shuffle calculator?

Option Pool Shuffle is the relationship behind this decision: a pre-money option-pool increase dilutes existing holders because the new investor prices against the expanded fully diluted capitalization. On this page it means solve pre-money pool top-up shares so the ungranted pool reaches the entered post-money fully diluted percentage. Outstanding grants, promised options, convertible securities and whether the target is pre- or post-money must match the term sheet; that is the line between the reported quantity and a broader corporate finance analysis.

How to use this calculator.

1. 01Confirm that “solve pre-money pool top-up shares so the ungranted pool reaches the entered post-money fully diluted percentage” matches the option pool shuffle convention you need.
2. 02Replace the fixture values for pre-money valuation, new primary investment, existing pre-financing fully diluted shares, existing ungranted option-pool shares, target ungranted pool as percent of post-money fully diluted shares with dated values from the governing record.
3. 03Keep all currencies, measurement units and time periods on the same basis before calculating.
4. 04Read estimated pre-money option-pool top-up shares together with this boundary: Outstanding grants, promised options, convertible securities and whether the target is pre- or post-money must match the term sheet.

The formula.

The calculation uses solve pre-money pool top-up shares so the ungranted pool reaches the entered post-money fully diluted percentage. In this option pool shuffle model, the entered terms are pre-money valuation, new primary investment, existing pre-financing fully diluted shares, existing ungranted option-pool shares, target ungranted pool as percent of post-money fully diluted shares. A pre-money option-pool increase dilutes existing holders because the new investor prices against the expanded fully diluted capitalization, which is why the relationship is presented under this name rather than as a universal alternative. Outstanding grants, promised options, convertible securities and whether the target is pre- or post-money must match the term sheet. Calculations keep full decimal precision through the relationship and round only the returned display values.

A worked example.

Frequently asked questions.

References& sources.

1. [1]National Venture Capital Association, Model Legal Documents; preferred-stock financing terms. Retrieved 2026-08-07. access: open unless marked otherwise.
2. [2]U.S. Securities and Exchange Commission. Investor.gov glossary: Stock option. Retrieved 2026-08-07. independence: primary; access: open.
3. [3]U.S. Securities and Exchange Commission. Investor.gov glossary: Dilution. Retrieved 2026-08-07. independence: primary; access: open.