How to Read a Cap Table (Without Getting Lost in the Spreadsheet)

A cap table looks intimidating because it's usually a spreadsheet with forty tabs that someone else built. Underneath, it answers one simple question: who owns what, and under what conditions? Once you know how to read the columns, you can check any cap table in a few minutes.

This guide uses one simple example company and walks it from founding through a pre-seed SAFE and a seed round. Numbers are illustrative. The logic is what matters.

What a cap table contains

"Cap table" is short for capitalisation table. At minimum it lists:

• Holders: every person or entity with an ownership stake or a right to one.
• Security type: common shares, preferred shares, options, warrants, SAFEs or convertible notes.
• Number of shares held or that could be held.
• Ownership percentage, usually on a fully diluted basis.

More detailed cap tables also show the price paid per share, vesting schedules, liquidation preferences and conversion terms. Those matter when you get to exit scenarios, but start with the basics.

Issued vs fully diluted ownership

This is the concept that trips people up most. There are two ways to count ownership:

• Issued (or outstanding) basis: counts only shares that actually exist today.
• Fully diluted basis: counts everything that could become a share, including granted options, the unallocated option pool, warrants and, in many models, SAFEs and notes as if converted.

Investors almost always think in fully diluted terms. If someone tells you they own 10% of a company, assume they mean fully diluted unless they say otherwise. If you're a founder or employee, check your own percentage on a fully diluted basis. It's the honest number.

Example: founding the company

Two founders start a company and issue 9,000,000 common shares, split equally. They also set aside 1,000,000 shares for an employee option pool.

On an issued basis, each founder owns 50%, since the pool shares don't exist yet. On a fully diluted basis, each owns 45%. Both numbers are correct. They answer different questions.

Adding a SAFE

The company raises $500,000 on a post-money SAFE with a $5,000,000 valuation cap. A post-money SAFE is designed so the investor's ownership at conversion can be worked out now, at least approximately: investment divided by post-money cap.

$500,000 ÷ $5,000,000 = 10%.

So the SAFE holder expects roughly 10% of the company when the SAFE converts, measured just before the new money in the next priced round comes in. Many cap tables show the SAFE on a separate line with a note, because no shares exist yet. A good model will show it as converted so you can see the real dilution.

Adding a priced seed round

Eighteen months later the company raises a $2,000,000 seed round at an $8,000,000 pre-money valuation. The post-money valuation is $10,000,000, so the new investors get 20%.

Two things happen at the same time:

1. The SAFE converts into preferred shares.
2. The seed investors ask for the option pool to be increased to 10% post-money, and they want that increase to come out of the pre-money valuation. This is very common, and it's sometimes called the "option pool shuffle" because it means the dilution falls on existing holders rather than on the new investors.

After the round, the simplified cap table might look like this:

The founders started at 45% each fully diluted and ended at about 31% each. The SAFE converted at 10% of the company just before the seed money came in, and was then diluted by the seed like everyone else, landing at about 8%. The seed took 20%, and the pool top-up took the rest. The exact split depends on the conversion mechanics in the SAFE, how many options were granted, and the precise pool size, so build the model properly before signing. Our post-money valuation guide has the full maths.

Common vs preferred shares

Founders and employees usually hold common shares or options over common shares. Investors usually hold preferred shares. Preferred shares come with extra rights. The most important ones are:

• Liquidation preference: preferred holders get their money back (usually 1x) before common holders get anything in a sale. See our liquidation preference guide.
• Conversion rights: preferred holders can convert to common, which they'll do if that gives them more money in a sale.
• Anti-dilution protection: adjusts their conversion price if a later round happens at a lower price.
• Protective provisions: veto rights over certain decisions.

A cap table that only shows percentages hides these differences. When you're thinking about an exit, you need a waterfall model that shows who gets paid what at different sale prices.

Options, vesting and the pool

The option pool line usually has two parts: options already granted to employees and options still available. Granted options typically vest over four years with a one-year cliff, meaning nothing vests for the first year, then a quarter vests, then the rest vests monthly.

Founder shares often vest too. Investors generally want founders on a vesting schedule so that a founder who leaves early doesn't walk away with a large stake. If your founder shares have no vesting, expect investors to ask for it at the first priced round.

A five-minute cap table check

When someone hands you a cap table, run through these questions:

1. Does the fully diluted total add up to 100%?
2. Are all SAFEs and notes included, with their caps and discounts?
3. How big is the unallocated option pool, and will investors want it bigger?
4. Are founder shares vesting, and how much has vested?
5. What preferred share classes exist and in what order do they get paid?
6. Are there warrants, advisor grants or side agreements that aren't listed?
7. Has the model been checked against the company's actual share register and legal documents?

That last point matters. Spreadsheets drift. The legal source of truth is the company's share register and signed documents. Many startups now use cap table software to keep both in sync.

Why cap table hygiene matters for fundraising

Messy cap tables slow down rounds. Investors' lawyers will reconcile every line. Missing paperwork, unsigned option grants, or a forgotten SAFE can add weeks to closing and sometimes kill a deal. Keep it clean from day one, record every issuance properly, and run a pro forma model before every round so you know exactly what you're agreeing to.

Reading a waterfall: what the cap table means at exit

Percentages tell you who owns what. They don't tell you who gets paid what when the company is sold, because preferred shareholders have rights that common shareholders don't. To see the real picture, you need a simple exit waterfall.

Take the post-seed company from the example above. Seed investors put in $2 million and the SAFE holder $500,000, both now holding 1x non-participating preferred shares. Here's how three exit prices play out, in simplified form:

The lesson is that at low exit values, preferences matter enormously and founders can end up with little even if they own a large percentage. At high exit values, the cap table percentages are what count. Our guide on liquidation preferences has more detailed examples.

Tools for managing a cap table

A spreadsheet is fine for the first year. Once you have options, SAFEs and a priced round, dedicated cap table software is worth considering. It keeps the share register, option grants and vesting schedules in one place, produces pro forma models for new rounds, and makes diligence faster because investors' lawyers can see everything directly. Whatever you use, make one person responsible for keeping it accurate and update it the same week anything changes.