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What Is a Cap Table? How to Read, Build, and Manage One

June 24, 2026

A cap table, short for capitalization table, is the master record of who owns your startup. It lists every shareholder, every option holder, and every convertible instrument, and it shows what slice of the company each one controls. If you are raising money, hiring with equity, or planning an exit, the cap table is the single document everyone looks at first. Get it right and diligence moves fast. Get it wrong and a fundraise can stall.

This guide explains what a cap table contains, how to read one, how to build one from scratch with a worked example, and how it shifts as you raise rounds and dilute.

What a Cap Table Contains

At its core, a cap table is a list of securities and who holds them. The main line items are:

  • Common shares. Usually held by founders and early employees who exercised options.
  • Preferred shares. Issued to investors in priced rounds, often with extra rights like liquidation preferences.
  • Stock options. Granted to employees, plus the unallocated option pool reserved for future hires.
  • SAFEs and convertible notes. Money that has come in but has not yet converted to equity. These sit as separate line items until a priced round triggers conversion.
  • Warrants. Rights to buy shares at a set price, often attached to debt or partnership deals.

For each holder, the table shows the number of securities and the resulting ownership percentage.

How to Read a Cap Table: Outstanding vs. Fully Diluted

The most important distinction is between outstanding shares and fully diluted shares. Outstanding shares are those issued and held right now. Fully diluted shares include everything that could become a share: all granted options, the unallocated option pool, warrants, and unconverted SAFEs or notes.

Investors, acquirers, and new hires price deals off the fully diluted number, so that is the figure you should track. The gap matters. You might look at issued shares and think you own 70 percent, while the fully diluted view shows you closer to 58 percent once the pool and convertibles are counted.

How to Build a Cap Table: A Worked Example

Start simple. Two founders incorporate and issue 8,000,000 common shares between them. They reserve a 2,000,000-share option pool for hiring. That is 10,000,000 fully diluted shares: founders hold 80 percent and the pool is 20 percent.

Now they raise a priced seed round: $2,000,000 at an $8,000,000 pre-money valuation. Post-money is $10,000,000, so the new investor should own $2M / $10M = 20 percent.

To find the price per share, divide the pre-money valuation by the existing fully diluted shares: $8,000,000 / 10,000,000 = $0.80 per share. The investor’s $2,000,000 buys $2,000,000 / $0.80 = 2,500,000 new preferred shares.

If the pricing step is unfamiliar, learn more in our explainer on how pre-money and post-money valuation differ.

The new fully diluted total is 12,500,000 shares. Checking the math: the investor holds 2,500,000 / 12,500,000 = 20 percent. Founders now hold 8,000,000 / 12,500,000 = 64 percent, and the pool is 2,000,000 / 12,500,000 = 16 percent. The three add to 100 percent.

That drop from 80 percent to 64 percent is dilution, and it is normal. Every new share issued shrinks everyone else’s percentage even though the company is usually worth more.

How SAFEs and Convertibles Change the Picture

SAFEs and convertible notes do not show an ownership percentage until they convert, but they will dilute you later, so model them. A SAFE typically carries an investment amount, a valuation cap (a ceiling on the conversion price), and sometimes a discount off the next round’s price. When both a cap and a discount apply, the investor converts at whichever gives them more shares.

For a deeper breakdown of how SAFE notes work and when to use one, see our dedicated guide.

The most common structure today is a post-money SAFE with a valuation cap and no discount. Post-money caps make per-SAFE math predictable, but the label matters: a post-money SAFE locks in the investor’s percentage of the post-money cap table, which means dilution from later money lands on you and earlier holders rather than on that SAFE investor.

The Option Pool and the “Shuffle”

Early-stage startups commonly reserve 10 to 15 percent of fully diluted shares for an employee option pool. When you raise, investors usually require the pool to be created or expanded before the round closes, carved out of the pre-money valuation. This is the “option pool shuffle,” and it shifts that dilution onto founders rather than the new investor. The larger the pre-money pool, the lower your post-money ownership. Founders can push back by sizing the pool to a documented 12-to-18-month hiring plan rather than accepting a blanket number.

Common Cap Table Mistakes

The recurring errors are predictable: missing founder vesting schedules, handing out too much advisor equity, inconsistencies between legal documents and the spreadsheet, untracked option grants, and forgetting that SAFEs will convert. Spreadsheets compound the risk because one wrong formula or stale version can misstate ownership, and they lack version control and an audit trail. Because a 409A valuation requires an accurate cap table, reconciling it before each financing is not optional.

Cap Table Tools

Many founders start in a spreadsheet, which is fine for a clean early-stage table. As complexity grows, dedicated software helps. Leading platforms include Carta, Pulley, AngelList, Ledgy, and Shareworks. Carta is known for depth and a broad ecosystem; Pulley is known for fast setup and strong scenario modeling. The value of software is automated pro formas, conversion modeling, and a clean audit trail of every change.

How Elev X! Affects Your Cap Table

If you raise from an accelerator, that investment becomes a cap-table entry you should model upfront. Elev X!, the accelerator run by NEC X in Palo Alto, California, offers a fixed deal: a $250K SAFE for up to 11 percent equity. Because it is a SAFE, it will not show a percentage on day one, but it will convert in your next priced round, so add it to your fully diluted model now to see your true post-conversion ownership. The program runs 9 to 12 months across three milestone phases (30 teams, then 6 to 10, then 1 to 3), spans 8 focus areas, and has produced 220+ alumni including Metabob, Beagle Technology, and Multitude Insights. Batch 15 in March 2026 selected 7 startups from 34 industries. Founders can apply to Elev X! here.

Frequently Asked Questions

What is the difference between a cap table and a stock ledger?

A stock ledger is the formal legal record of share issuances and transfers. A cap table is a summary view built on top of that data, adding ownership percentages, the option pool, and unconverted instruments so you can see the full picture at a glance.

When should I move off a spreadsheet?

A spreadsheet is fine while your table is simple. Once you add an option pool, multiple SAFEs, or a priced round, dedicated software reduces the risk of formula errors and gives you an audit trail that investors and 409A providers expect.

Why does my ownership percentage drop when the company is worth more?

That is dilution. Issuing new shares to investors or employees increases the total share count, so each existing holder owns a smaller slice. The slice is usually smaller of a larger pie, which is why founders accept it.

How do SAFEs appear on a cap table before they convert?

They sit as separate line items showing the invested amount and terms (cap and discount), with no ownership percentage assigned. You should still model their conversion on a fully diluted basis to understand your real ownership.

Sources

We do our best to ensure accuracy, but if you spot an error, please let us know at pr@nec-x.com.