Cap Table Explained: What It Is, How to Read It, and What Investors Look For
- Giorgi Meskhi
- Aug 5
- 10 min read
Updated: Aug 11
By the time a founding team raises a seed round, they retain a median of 56% of their fully diluted equity. By the time they close a Series A, that figure drops to 36%, according to Carta’s Founder Ownership Report 2026. That is 14 percentage points of founder ownership lost across two rounds. And most founders cannot tell you, round by round, exactly where it went.
The cap table is the document that makes that math visible. Every share issued, every option granted, every investor who came in - it all lives here. If you cannot read your cap table, you cannot negotiate your next term sheet with confidence, because you do not know what the dilution clause actually costs you.
We have reviewed cap tables in more than 600 fundraising conversations at RunwayTeam. This guide explains what a cap table is, what belongs in it, how to read one, and what a well-prepared investor checks the moment diligence begins.
What Is a Cap Table?
A cap table - short for capitalization table - is a document that records every holder of equity in your company, what they hold, in what form, and at what percentage. It is the single source of truth for startup ownership.
Every time you issue new shares - in a funding round, an option grant, or a conversion of a convertible instrument - the cap table is updated to reflect the new reality. Between rounds, it tells you exactly what you own. In a round, it tells you what you are about to give away.
The formal name is the capitalization table. You will see it referred to that way in legal documents and term sheets. In practice, every founder, investor, and lawyer in the room calls it the cap table.
Unlike a public company, where share prices update by the second, a private startup’s cap table changes only at specific events: a new funding round, an employee option grant, a SAFE or convertible note conversion, or a secondary transaction. Between those events, the table is static. That is what makes it so important - every change is a deliberate decision, and every decision has permanent consequences for every shareholder on the table.
What Goes in a Cap Table?
A startup cap table has four core components. Understanding each one is the foundation of reading any cap table correctly.
1. Shareholders
The rows of your cap table. Founders, angel investors, institutional investors, employees with vested stock options, advisors with equity grants - anyone who holds or has been granted equity appears here. A clean early-stage cap table has a short list. A messy one has dozens of names from early angel rounds, informal advisor grants, and untracked promises.
2. Share classes
Not all shares are equal. Common shares are what founders and employees hold. They carry basic ownership rights and are last in line in any distribution event. Preferred shares are what most institutional investors hold. They come with additional rights - liquidation preferences, anti-dilution protections, and sometimes veto rights on major decisions. Understanding which class each shareholder holds is what makes the cap table strategically meaningful, not just mathematically useful.
3. Number of shares
Three figures matter here. Authorized shares are the maximum number the company is allowed to issue (as set in the articles of incorporation). Issued shares are the ones that actually exist in someone’s name. Outstanding shares are issued shares that are currently held, excluding any that have been bought back or canceled. Most of the time, issued and outstanding are the same number at the early stages.
4. Ownership percentage
Shown in two ways. Basic ownership is each shareholder’s percentage of issued and outstanding shares - the shares that actually exist right now. Fully diluted ownership includes every share that could ever exist: issued shares plus all reserved but unissued options, warrants, and convertible instruments. Fully diluted is the number investors use. It is also smaller than basic ownership, which surprises first-time founders every time.
A Cap Table Example: Archway Labs
The following is a fictional example created for illustration. All company names, founder names, investor names, and figures are made up. The mechanics, however, reflect how real seed-stage cap tables actually work.
State 1: Pre-seed (Day 0, founders only)
Archway Labs was founded by Sofia Chen (CEO) and Marcus Webb (CTO). They incorporate, authorize 10,000,000 shares, and split them 50/50.
Shareholder | Share class | Shares held | Ownership % |
Sofia Chen (CEO) | Common | 5,000,000 | 50.0% |
Marcus Webb (CTO) | Common | 5,000,000 | 50.0% |
Total |
| 10,000,000 | 100% |
State 2: Post-seed ($1M raised, $4M pre-money / $5M post-money)
Meridian Ventures (fictional VC) offers a $1M seed round at a $4M pre-money valuation. The term sheet includes a 10% option pool to be created pre-money. This is the detail most founders miss.
Pre-money option pool means the new shares for employee equity come from the founders’ side of the cap table, not from the investors’. The investor’s 20% is calculated on the fully diluted post-round total, which includes the option pool they just required you to create. Sofia and Marcus are diluted twice: once by the option pool, then again by the new investor shares.
Shareholder | Share class | Shares held | Fully diluted % |
Sofia Chen (CEO) | Common | 5,000,000 | 35% |
Marcus Webb (CTO) | Common | 5,000,000 | 35% |
Option pool (unissued) | Common (reserved) | 1,400,000 | 10% |
Meridian Ventures | Series A P5referred | 2,850,000 | 20% |
Total (fully diluted) |
| 14,250,000 | 100% |
Sofia and Marcus went from 50% each to 35% each. That 15-point drop breaks down as roughly 7 points from the option pool and 8 points from the investor. If they had included the option pool in the post-money calculation instead, each would have retained closer to 40%. On a $50M exit, that difference is approximately $5M per founder. The option pool is not a formality.
How to Read a Cap Table
Cap tables look simple until they include three rounds of preferred shares, two SAFEs, and a convertible note priced at a discount. Here is how to read any cap table without getting lost.
Start with the fully diluted total
Ignore basic shares. The fully diluted total - the bottom-right number on any cap table - is the one that matters. It includes every share that could ever exist. Your ownership percentage is your shares divided by that number.
Separate issued shares from reserved shares
Issued shares exist. Reserved shares (the option pool) do not yet exist - they are set aside for future grants. But they are counted in fully diluted ownership because the moment a key hire joins and gets options, they are real. Never treat the option pool as “unused slack.” It is already costing you something.
Read each share class as a separate story
Common shares (founders, employees) and preferred shares (investors) behave very differently at exit. Preferred shareholders often have liquidation preferences - meaning they get their money back first before common shareholders receive anything. A cap table that appears to be a 60/40 founder-investor split can end up more like a 40/60 split in a modest exit scenario once liquidation preferences are applied.
Check the option pool size relative to the round
A 10-20% option pool is standard at seed and Series A, according to Carta’s option pool data. If a term sheet asks for more than 20%, push back with a hiring plan that justifies a smaller pool. Every percentage point of option pool created pre-money is a percentage point of dilution that hits only the founders.
How Your Cap Table Changes Round by Round
Dilution is not a one-time event. It compounds. The Carta Founder Ownership data makes the arc concrete: 56% median founding team ownership at seed, 36% by Series A. That is not unusual or alarming - it is what happens when you trade equity for capital to grow. But founders who understand the mechanics in advance make better decisions about round size, valuation, and option pool size at every stage.
We cover the valuation mechanics that set the pre-money number in detail in our guide to startup valuation. The short version relevant here: the pre-money valuation and the round size together determine how many new shares are issued, which determines how much every existing shareholder is diluted. Negotiate the valuation up, and you issue fewer shares for the same amount of capital. That is why valuation and cap table mechanics are the same conversation, not two separate ones.
Pre-seed
Typically unpriced - a SAFE or convertible note. No new equity is issued yet. The cap table stays simple: founders only, sometimes with a small friends-and-family round. The SAFE or note sits as a liability that will convert at the next priced round, often at a discount or with a valuation cap.
Seed
First priced round. New preferred shares are issued. The option pool is usually created here. This is where founders experience their first meaningful dilution event and where most cap table mistakes happen, because it is the first time the mechanics are real rather than theoretical.
Series A and beyond
Each subsequent round follows the same logic: new investor shares, often a refreshed option pool, and another step down in founder ownership percentage. By Series A, the median founding team is at 36% of fully diluted equity, per Carta. By Series B, the option pool often exceeds founder ownership entirely. The percentage keeps falling. The bet is that the value of that smaller percentage grows faster than the percentage shrinks.
What Investors Look for in Your Cap Table
Your cap table is reviewed early in diligence - often before your financials. Investors are not just checking the numbers. They are checking the judgment of the people who negotiated the history of that table.
Founder ownership
If the founding team owns less than 30-40% of fully diluted equity before a Series A, most institutional investors will raise a flag. Founders with insufficient skin in the game have less economic incentive to push through the difficult years. If you got here by giving away too much too early, expect hard questions about why.
Fragmented early investor base
A seed round with 40 individual angel investors is harder to manage than one with 3 funds. Every shareholder on a cap table has rights. Managing 40 investor relationships, obtaining consent for future actions, and coordinating votes are material operational burdens. Institutional investors know this and factor it in.
Clean documentation
Every equity grant needs a signed agreement. Every SAFE needs a countersigned document. Every option needs a grant notice. Investors will ask for the underlying documents for every line on the cap table. If any grants are informal, verbal, or missing paperwork, expect the diligence process to slow significantly while those are cleaned up.
Option pool headroom
Investors want to know there is enough room in the option pool to hire the team needed to hit the next milestone without triggering another dilutive pool refresh. If your pool is nearly exhausted, they will require a top-up as part of the round, which means more pre-money dilution for founders. Showing a clear use-of-funds plan tied to specific hires helps justify the pool size you are actually requesting.
Liquidation preferences and prior round terms
If earlier investors have aggressive liquidation preferences or anti-dilution clauses, a new investor wants to understand how those interact with their own terms. A messy prior round does not kill a deal, but it complicates it. This is another reason the financial model matters - investors run exit scenarios that trace how proceeds flow through the cap table, and they want to see that the founders do, too.
A well-structured cap table removes friction in every investor conversation. If yours has complexity that requires explanation, that’s a signal that the round structure and strategy need to be reviewed before outreach begins.
Common Cap Table Mistakes
Issuing equity without documentation. A handshake equity promise is not a cap table entry. Without a signed agreement, the ownership is legally unenforceable and creates diligence risk in every future round. Document every grant, every SAFE, every agreement before it is “finalized later.”
Ignoring the fully diluted number. Your basic ownership looks better than your fully diluted ownership. Investors use the fully diluted number. If you negotiate based on basic ownership percentages, you will be surprised by how much you actually gave away once the option pool is factored in.
Granting advisor equity without vesting. Advisor grants are typically 0.1-0.5% with a one- to two-year vesting schedule. Without vesting, an advisor who disengages after three months retains their equity permanently. Set vesting for every grant, including advisors.
Not modeling multiple rounds before signing the first term sheet. The options you accept in a seed round - option pool size, liquidation preference, pro-rata rights - constrain every future round. Before you sign, model what your cap table looks like at seed, Series A, and Series B. Most founders do not do this until it is too late.
Treating a high valuation as a low-dilution solution. A higher pre-money valuation means you issue fewer shares for the same raise, which reduces dilution. But a valuation that your company cannot grow into creates a down-round risk at the next stage. A down round can compress founder ownership faster than a normal round at a moderate valuation. Price to grow into, not to maximize the current number.
Treating the cap table as a static document. Your cap table needs to be updated every time equity changes hands - including option exercises, SAFE conversions, and secondary transactions. A cap table that is three months out of date is not a cap table. It is a liability.
FAQs
What is a cap table in simple terms?
A cap table is a spreadsheet or document that records who owns equity in a company, how much they own, and in what form. It tracks founders, investors, and employees with stock options and updates whenever new shares are issued or existing ones change hands.
What is the difference between a cap table and a shareholder register?
A shareholder register lists who legally holds issued shares. A cap table goes further - it includes all potential future shares such as unissued option pool reserves, warrants, and convertible instruments. The cap table shows the fully diluted picture; the shareholder register shows only what exists right now.
What does fully diluted mean on a cap table?
Fully diluted means every share that could ever exist is counted: issued shares plus all shares reserved under option pools, warrants, SAFEs, and convertible notes that have not yet converted. Fully diluted ownership percentages are smaller than basic ownership percentages, and they are the figures investors use when evaluating a round.
How does an option pool affect a cap table?
An option pool is a block of shares reserved for employee equity grants. It is typically 10-20% of fully diluted equity and is usually created pre-money - meaning the new shares come out of the founders’ side of the cap table before the investor’s shares are counted. This means founders are diluted by the option pool before the round dilution even applies.
What is a typical cap table at the seed stage?
At the seed stage, a clean cap table usually has two or three founders, one or two institutional investors, and a 10-15% option pool. Based on Carta’s Founder Ownership Report 2026, the median founding team retains around 56% of fully diluted equity by the time they close a seed round, with the remainder split between early investors and the option pool.
What is cap table management?
Cap table management is the ongoing practice of keeping your capitalization table accurate, up to date, and legally documented. It includes recording every equity event, maintaining underlying agreements, and running scenario models before each new round. Early-stage teams often manage this in a spreadsheet; as cap tables grow more complex across multiple share classes and rounds, dedicated software becomes more reliable.
A Clean Cap Table Starts With a Clear Financial Model
RunwayTeam builds the financial model and fundraising strategy that make your equity structure defensible in every investor conversation - from seed through Series A.
