What Is a Cap Table? Ownership, Dilution, Explained

A cap table (capitalization table) is the record of who owns what in a company: every stakeholder, every class of stock, every option and warrant and convertible instrument, and the percentage of the company each one represents. It is the single data set a company keeps that every other ownership question, from "how much does the founder own after this round" to "what does this employee's grant vest into", gets answered against.

A cap table is not optional bookkeeping kept for its own sake. It is the input every later transaction, valuation, and filing reads from: a new financing round needs to know who holds what before it can calculate dilution; a 409A valuation needs the share classes and their preference terms before it can allocate value across them; an audit needs a defensible history of every issuance and transfer. Get the cap table wrong, and everything downstream inherits the error.

What a cap table tracks

A cap table is organized around a small number of core objects:

• Stakeholders. Any person or entity that holds, or may come to hold, equity: founders, employees, investors, advisors, and funds. Every share, option, warrant, and note on the cap table is owned by a stakeholder, which is why adding stakeholders is usually the first step in setting one up.
• Share classes. Common stock, Series A Preferred, Series B Preferred, and so on. Each class is created through a corporate filing, typically the Certificate of Incorporation or an Amendment, which is the source of truth for that class's authorized shares, its Original Issue Price, and any liquidation preference or other preferred terms.
• Instruments. Everything that represents equity or a future claim on equity: stock options, RSUs (restricted stock units), warrants, SAFEs, and convertible notes. Options and RSUs are typically granted against a vesting schedule; SAFEs and convertible notes raise money now and convert into shares later, usually in a future priced round, at a valuation cap and/or discount set when the note was issued.
• Vesting. The schedule that determines how much of an option or RSU grant a stakeholder has actually earned at a given date, commonly a multi-year schedule with an initial cliff followed by periodic (monthly or quarterly) vesting.
• Ownership percentages. The output of all of the above: what share of the company each stakeholder holds, read on either an outstanding or a fully-diluted basis (see below).

Authorized vs. issued shares

These two numbers are easy to confuse and matter a lot:

• Authorized shares are the maximum number of shares a class is permitted to issue, set when the class is created in the corporate filing.
• Issued shares are the shares actually granted to stakeholders out of that authorized pool.

Issued can never exceed authorized. A company typically authorizes more shares than it has currently issued, to leave room for future grants (an option pool, for example) without having to re-file to raise the authorized count every time.

Fully-diluted vs. outstanding ownership

Ownership on a cap table can be read two ways, and the percentages differ:

• Outstanding ownership counts only shares that have actually been issued.
• Fully-diluted ownership also counts everything that could become shares: unexercised options, the unallocated option pool, warrants, and convertible instruments if they converted today.

Founders and investors almost always negotiate on a fully-diluted basis, because it reflects ownership after everything currently outstanding or promised has been granted and exercised. A cap table that only shows outstanding ownership understates how diluted existing holders actually are once every option and convertible is accounted for.

Why the cap table matters beyond "who owns what"

The cap table is the record every compliance and valuation process downstream reads from, not a parallel spreadsheet someone keeps in sync by hand:

• An IRC §409A valuation reads the cap table's share classes and their preference terms to allocate a company's total equity value across common and preferred stock. See what a 409A valuation is for how that allocation works.
• ASC 718 / IFRS 2 stock-based compensation expense is calculated from the grants and vesting schedules recorded on the cap table: the expense a company books every quarter traces directly back to the options and RSUs issued here. See how Value8 handles ASC 718 expensing for the calculation itself.
• For companies granting equity to Israeli employees, Section 102 compliance is tracked per grant on the same cap table, rather than in a separate system. See what Israeli Section 102 is for the underlying rules.
• A financing round, an exit, or a secondary sale all calculate dilution, proceeds, and consideration directly against the cap table's current state.

A spreadsheet can start a cap table. It struggles to keep up with one

A cap table with a handful of founders and a single share class is easy to track in a spreadsheet. What gets hard, as a company raises rounds, grants options to a growing team, issues a SAFE or two, and starts tracking vesting for dozens of people, is keeping every formula correct at once: authorized-vs-issued counts per class, fully-diluted math that correctly includes the unallocated pool and every convertible, vesting schedules that update as time passes and people leave, and a transaction history that reconciles to itself after every issuance, exercise, and transfer. A single broken formula or a stale copy-pasted number does not announce itself. It just quietly produces the wrong ownership percentage, the wrong dilution calculation, or the wrong number feeding into a 409A valuation or an ASC 718 expense run.

Software that treats the cap table as the single source of record, rather than a document that gets exported and rebuilt for every new purpose, is the practical answer once a company has more than a few stakeholders or more than one instrument type. See how Value8's cap table works for how that works in practice.

This is general information about cap table structure and terminology, not legal, tax, or accounting advice. Confirm specifics with your counsel or accountant.