What is Fully Diluted Shares?
The share count if every option, warrant, and convertible turned into stock - the honest ownership denominator.
Fully Diluted Shares: definition
Ownership percentages depend on the denominator you use. Issued (basic) shares count only what is outstanding today; fully diluted shares add everything that could become shares - granted options, the unallocated option pool, warrants, and convertibles like SAFEs. Because these will likely convert, the fully diluted count is the realistic basis for ownership, dilution, and per-share value.
- Includes issued shares plus all convertible instruments
- Adds granted options and the unallocated option pool
- Adds warrants and convertibles (notes, SAFEs) on an as-converted basis
- The denominator for realistic ownership and dilution math
How Fintra handles it
Fintra maintains the fully diluted cap table continuously, folding in every grant, the remaining pool, and outstanding convertibles, so ownership percentages reflect reality rather than only issued shares. When you model a raise or a pool change, the fully diluted view updates so you can see true post-round ownership and per-share economics.
Worked example
| Component | Shares |
|---|---|
| Issued common + preferred | 8,000,000 |
| Granted options | 1,200,000 |
| Unallocated option pool | 600,000 |
| SAFEs (as converted, est.) | 700,000 |
| Fully diluted total | 10,500,000 |
Frequently asked questions
What is the difference between issued and fully diluted shares?
Issued shares are those outstanding today. Fully diluted shares add everything that could convert into shares - options, the option pool, warrants, and convertibles. Ownership percentages are usually quoted fully diluted because that reflects the likely eventual reality.
Why use fully diluted shares for ownership?
Because outstanding options and convertibles will most likely become shares, diluting everyone. Using only issued shares overstates each holder’s true percentage. The fully diluted count gives the realistic denominator for ownership and per-share value.
Does the option pool count in fully diluted shares?
Yes - both granted options and the unallocated portion of the pool are included, because the pool represents shares reserved for future issuance. That is why expanding the pool dilutes existing holders on a fully diluted basis.
How does Fintra track fully diluted shares?
Fintra maintains the fully diluted cap table continuously - including grants, the pool, and convertibles - and updates it as you model raises and pool changes, so ownership percentages always reflect the realistic, as-converted picture.
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