What Is a Cap Table?
A capitalization table — commonly called a cap table — is the definitive record of a company's equity ownership. It lists every shareholder, the number and type of shares they hold, and their ownership percentage on a fully diluted basis.
For startups, the cap table is one of the most important financial documents. It determines how much of the company each founder, investor, and employee owns, and how that ownership changes with each new funding round, option grant, or equity event.
Understanding Dilution
Dilution is the reduction in existing shareholders' ownership percentage when new shares are issued. It's the most important concept in startup equity, and it happens every time a company raises capital or creates new option pool shares.
There are two types of dilution to understand:
- Percentage dilution: Your ownership percentage decreases because total shares outstanding increase. If you owned 50% of 1M shares and 500K new shares are issued, you now own 33.3% of 1.5M shares.
- Value dilution: Less common and more concerning — this happens when new shares are issued at a price below the current fair market value (a "down round"), actually reducing the value of your existing shares.
In a well-functioning startup, percentage dilution is normal and healthy. Even though your percentage shrinks, the value per share increases with each funding round, so the total value of your stake grows. A smaller slice of a much bigger pie is worth more.
The Option Pool Shuffle
One of the most impactful (and least understood) dilution events is the "option pool shuffle." Investors typically require the company to create or top up an employee stock option pool before their investment — meaning the option pool expansion dilutes existing shareholders but not the new investor.
For example, if an investor wants to own 20% of the company post-money, and also requires a 15% option pool, the founders bear the full dilution of both the investment and the option pool. This is why the pre-money valuation isn't always what it seems — it includes the option pool dilution.
Key Cap Table Terms
- Fully diluted shares: Total shares including all outstanding shares, option pool (granted and ungranted), warrants, and convertible securities as if all were exercised/converted
- Pre-money valuation: What the company is worth before new investment capital comes in
- Post-money valuation: Pre-money valuation + the investment amount
- Price per share: Pre-money valuation ÷ fully diluted pre-money shares
- Liquidation preference: The amount investors get paid back before common shareholders in an exit event (typically 1x their investment)
- Pro rata rights: An investor's right to maintain their ownership percentage in future rounds by investing proportionally
How Cap Tables Affect 409A Valuations
Your cap table is a critical input to the 409A valuation process. The independent appraiser needs to understand the full equity structure — number of share classes, liquidation preferences, participation rights, anti-dilution provisions, and option pool size — to properly allocate enterprise value between preferred and common stock.
A complex cap table with multiple preferred series, each with different liquidation preferences and participation rights, typically results in a larger discount between preferred and common stock value. This means a lower 409A valuation for common stock, which benefits employees by giving them a lower strike price on their options.