A cap table, short for capitalization table, is the record of who owns what in a company: every class of shares, every holder, every option grant and every instrument that may convert into equity later. In startup funding it is the document that investors, founders and lawyers use to calculate ownership percentages, dilution and payouts at each financing round and at exit.
A cap table is both a legal register and an analytical model. The register side must match the company’s share ledger, board approvals and signed agreements exactly. The model side projects how ownership would look after a planned round, a new option pool or the conversion of SAFEs and convertible notes.
What a cap table contains
A complete cap table lists each security holder in rows and each class of security in columns, with totals that reconcile to the number of shares the company has issued and authorized. The typical components are shown in the table below.
| Component | Typical holders | Notes |
|---|---|---|
| Common stock | Founders, early employees | Usually subject to a vesting schedule |
| Preferred stock | Venture capital and angel investors | Separate series per round, such as Series A |
| Option pool | Employees and advisors | Granted and ungranted options shown separately |
| Warrants | Lenders, strategic partners | Rights to buy shares at a fixed price |
| SAFEs and convertible notes | Pre-seed and seed investors | Convert into shares at a future priced round |
The key distinction is between issued shares and fully diluted shares. Fully diluted capitalization counts every share that would exist if all options, warrants and convertible instruments were exercised or converted. Investors almost always price rounds and quote ownership on a fully diluted basis, because issued shares alone understate future dilution.
How the cap table changes in a funding round
In a priced round, the new investor buys newly issued shares at a price per share derived from the pre-money valuation divided by the fully diluted share count before the round. Existing holders keep the same number of shares but own a smaller percentage of a larger company, which is dilution.
| Holder | Shares before | Ownership before | Shares after | Ownership after |
|---|---|---|---|---|
| Founders | 8,000,000 | 80% | 8,000,000 | 64% |
| Option pool | 2,000,000 | 20% | 2,000,000 | 16% |
| Seed investors | 0 | 0% | 2,500,000 | 20% |
| Total | 10,000,000 | 100% | 12,500,000 | 100% |
In this example the round values the company at 8 million dollars pre-money with a price of 0.80 dollars per share, and the investors put in 2 million dollars for 2,500,000 new shares. Post-money valuation is therefore 10 million dollars, and the investors own exactly 20 percent.
Two features often complicate this simple picture. Investors frequently require the option pool to be enlarged before the round, so that the dilution from new hires falls on existing holders only, an arrangement often called the option pool shuffle. And SAFEs or convertible notes convert at the same time, usually at a valuation cap or discount, adding further shares that dilute founders.
Cap table compared with related funding documents
The cap table is one of several documents in a financing, and each answers a different question. Confusing them leads to errors, especially when the cap table is treated as the source of legal truth rather than a summary of it.
| Document | Purpose | Relationship to the cap table |
|---|---|---|
| Cap table | Summarizes ownership and dilution | The subject of this comparison |
| Term sheet | Sets the main economic and control terms of a round | Defines the changes the pro forma cap table models |
| Stock ledger | Legal record of issuances and transfers | Cap table must reconcile with it |
| Pro forma cap table | Projected ownership after a planned round | Model version used in negotiations |
| Waterfall analysis | Exit proceeds per holder | Uses cap table plus liquidation preferences |
A waterfall analysis matters because ownership percentages alone do not determine payouts. Preferred shareholders with a liquidation preference are paid before common holders, so in a modest exit founders may receive far less than their percentage suggests.
Maintaining an accurate cap table
Early startups often keep the cap table in a spreadsheet, while companies past the seed stage usually move to dedicated equity management software that links grants, vesting and exercises to signed documents. Whatever the tool, the discipline is the same: every change must be backed by an approved legal document.
- Record every issuance with date, price, board approval and certificate or book-entry reference.
- Track vesting start dates, cliffs and acceleration terms for founders and employees.
- Model SAFEs and notes with their cap, discount and conversion mechanics before every round.
- Reconcile the cap table with the stock ledger and legal filings at least quarterly.
During due diligence, investors and acquirers compare the cap table line by line with signed agreements. Discrepancies, such as promised options that were never board-approved, can delay a closing or force costly corrective actions.
Common cap table mistakes
Most cap table problems start small and grow expensive. The table summarizes recurring errors and their consequences.
| Mistake | Consequence | Remedy |
|---|---|---|
| Verbal equity promises | Disputes and unexpected dilution | Document every grant in writing |
| Ignoring stacked SAFEs | Founders discover heavy dilution late | Model conversion before each new SAFE |
| No founder vesting | Departing founder keeps a large stake | Apply standard four-year vesting |
| Too many small holders | Complex approvals and later rounds | Use pooled vehicles for small investors |
| Spreadsheet drift | Numbers diverge from legal records | Reconcile regularly with the ledger |
Stacked SAFEs deserve particular attention. Because a SAFE does not show up as shares until conversion, founders can raise several rounds of SAFEs without seeing the cumulative effect, then learn at the priced round that they have given away far more ownership than intended.
A non-technical view
A cap table is the list of who owns which slice of a company. When the company is founded, the founders hold the whole pie. Each time investors put money in or employees receive stock options, the pie is cut into more slices.
The pie can grow in value, so a smaller slice can still be worth more than a bigger one used to be. The cap table keeps track of every slice so that, when the company raises money or is sold, everyone knows exactly what they are entitled to.
A concrete example
Two founders split 9 million shares equally and set aside a 1 million share option pool. Over the next year they raise 1.5 million dollars on SAFEs with a 10 million dollar valuation cap, and they grant 600,000 options to their first five employees.
When a lead investor offers a Series A term sheet, the founders build a pro forma cap table. It shows the SAFEs converting into roughly 15 percent of the company, the investor requiring a larger option pool, and the new money taking another 20 percent. Instead of the 45 percent each founder expected, each would hold about 27 percent after the round. Seeing the numbers early lets them negotiate a smaller pool increase based on a concrete hiring plan, which preserves several points of ownership for the founders.