Capitalization Table
A cap table is a spreadsheet that tracks who owns what percentage of a startup. Every time you raise money or grant stock options, the cap table gets updated to show how ownership shifts.
Definition
A capitalization table (cap table) is a comprehensive record of all equity ownership in a company, listing every shareholder, the type and number of securities they hold, and their percentage ownership on both a basic and fully diluted basis. Cap tables are the single source of truth for who owns what in a startup and are critical for modeling dilution across funding rounds, employee equity grants, and eventual exit scenarios.
Cap Table
Who owns what in the company
Option Pool Impact
Pool created from founder shares, not investor shares
Before Pool
After Pool (15%)
Dilution Waterfall
Founder ownership from 100% to IPO
What a Cap Table Includes
A cap table lists all equity holders and their securities: common stock held by founders and employees, preferred stock held by investors, stock options (both vested and unvested), warrants, convertible notes, and SAFE agreements. Each row represents a stakeholder, and columns typically show share count, share class, price per share, percentage ownership, and investment amount. The cap table can be viewed on a 'basic' basis (only issued and outstanding shares) or a 'fully diluted' basis, which includes all securities that could convert into common stock. The fully diluted view — which accounts for diluted shares outstanding — is the standard for VC and M&A analysis because it reflects true economic ownership.
The Option Pool and Its Impact
Most startups reserve a portion of authorized shares for an employee stock option pool (ESOP), typically 10-20% of fully diluted shares. The option pool is a critical cap table component because it dilutes existing shareholders. In VC negotiations, investors often require that the option pool be expanded before a new round closes, which means the dilution from the larger pool falls on existing shareholders rather than the new investor. This 'option pool shuffle' effectively lowers the true pre-money valuation. Founders should track option pool usage carefully — how many options are granted, exercised, and forfeited — because this directly affects how much of the company is available for future hires.
Modeling Dilution Across Rounds
One of the most important uses of a cap table is modeling how ownership changes across successive funding rounds. Each new round introduces new shares, diluting all existing holders proportionally. A founder who starts with 50% ownership after seed may hold 35% after Series A and 22% after Series B. The cap table makes this dilution visible and allows founders to project their ownership at exit under different fundraising scenarios. Tools like Carta, Pulley, and Shareworks have replaced the traditional Excel cap table for most startups, but understanding the underlying math — how equity value flows through a waterfall analysis — remains essential for founders and VC professionals.
Cap Tables in Exit Scenarios
At an exit (acquisition or IPO), the cap table determines how proceeds are distributed through a liquidation waterfall. Preferred stockholders typically get their liquidation preference first (1x their investment, sometimes more), and then remaining proceeds are split among all shareholders on an as-converted basis. The cap table must account for participation rights, seniority among preferred classes, and conversion scenarios. A well-maintained cap table allows stakeholders to model their payout under different exit valuations, which is why investors scrutinize cap tables during due diligence for any new round.
Worked Example — With Real Numbers
A startup has the following cap table after Series A: Founders hold 6M common shares (60%), Seed investors hold 1M preferred shares (10%), the Series A investor holds 2M preferred shares (20%), and the option pool has 1M shares reserved (10%). Total fully diluted shares = 10M. When the company raises a $10M Series B at a $40M pre-money valuation, price per share = $40M / 10M = $4.00. The Series B investor gets $10M / $4.00 = 2.5M new shares. New total = 12.5M shares. Founders are diluted from 60% to 6M / 12.5M = 48%. The Series A investor goes from 20% to 2M / 12.5M = 16%.
Key Takeaways
A cap table is the definitive record of who owns what in a startup — always use the fully diluted view
Option pool expansions before a round dilute existing shareholders, not new investors (the option pool shuffle)
Each funding round introduces new shares that proportionally dilute all existing holders
Cap tables drive liquidation waterfall analysis at exit, determining who gets paid and how much
Clean, accurate cap tables are essential for fundraising due diligence and M&A processes
Common Mistakes in Interviews
Looking at basic shares instead of fully diluted shares — this understates dilution and overstates ownership
Forgetting to include unconverted SAFEs and convertible notes in the fully diluted share count
Not modeling the option pool shuffle — founders often overestimate their post-round ownership
Ignoring liquidation preferences when estimating exit proceeds — common shareholders may get far less than their ownership percentage implies
How Interviewers Test This
In VC interviews, expect cap table questions that combine dilution math across multiple rounds. Practice building a simple cap table in Excel from scratch: start with founders, add a seed round, add a Series A with an option pool expansion, and calculate everyone's ownership at each stage. Being able to quickly compute dilution and price per share on the fly will set you apart.
Related Concepts
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Pre-Money Valuation
Pre-money valuation is the estimated value of a startup immediately before it re...
Post-Money Valuation
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Diluted Shares Outstanding
Diluted shares outstanding represent the total number of shares that would be ou...
Equity Value (Market Cap)
Equity Value, commonly called Market Capitalization (Market Cap), represents the...
SAFE (Simple Agreement for Future Equity)
A SAFE (Simple Agreement for Future Equity) is a financing instrument created by...
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