What Is a Cap Table?

A cap table (capitalization table) is a document that shows who owns your company. It lists every shareholder, the number and type of shares they own, and their ownership percentage. For startups, the cap table is the source of truth for equity ownership—it tracks founders, investors, employees with stock options, and anyone else with an ownership stake.

At its simplest, a cap table is a spreadsheet. At its most complex, it's a multi-tab model tracking common stock, multiple series of preferred stock, convertible instruments, option pools, and pro forma ownership across various scenarios. Every financing round, every option grant, and every equity event changes your cap table.

Getting your cap table right is essential. Errors compound over time and can derail fundraising, acquisitions, or IPOs. Investors will scrutinize your cap table during due diligence. Employees deserve to know their equity is tracked correctly. Your cap table is the foundation of your company's ownership structure.

Basic Cap Table Components

Shareholders

Every person or entity that owns equity: founders, investors, employees, advisors, and any other stockholders. Each shareholder row shows their name, share count, share type, and ownership percentage.

Common Stock

The basic form of equity, typically held by founders and employees. Common stockholders are last in line during liquidation and have fewer rights than preferred stockholders.

Preferred Stock

Stock with special rights, typically held by investors. Each funding round creates a new "series" of preferred stock (Series Seed, Series A, Series B, etc.) with its own terms. Preferred stockholders receive liquidation preferences, anti-dilution protection, and other negotiated rights.

Option Pool

Shares reserved for future employee equity grants. The option pool appears on the cap table as reserved but unissued shares. As options are granted, they move from the unallocated pool to specific employees (though unvested options may not appear until exercised, depending on how you track).

Convertible Instruments

SAFEs, convertible notes, and warrants that will convert to equity in the future. These may not appear on the "current" cap table but should be tracked and modeled for pro forma ownership calculations.

Understanding Ownership Percentages

Fully Diluted Ownership

The most common way to express ownership. Fully diluted includes all outstanding shares PLUS all shares that could be issued: unexercised options, the unallocated option pool, and convertible instruments. When someone says "you own 10% of the company," they usually mean fully diluted.

Outstanding Shares

Only shares that have actually been issued. This excludes the option pool and convertible instruments. Outstanding ownership percentages are higher than fully diluted, but less meaningful for understanding true ownership.

As-Converted Ownership

What ownership would look like if all preferred stock converted to common. This is relevant for voting and for modeling exit scenarios where preferred converts.

Building Your Cap Table

Starting Point: Formation

At incorporation, founders receive common stock. A typical early cap table might show:

  • Founder A: 4,000,000 shares (40%)
  • Founder B: 4,000,000 shares (40%)
  • Option Pool: 2,000,000 shares (20%)
  • Total: 10,000,000 shares (100%)

After a SAFE Round

When you raise on SAFEs, your cap table gets more complex. SAFEs don't immediately appear as shares—they appear as a separate section showing the conversion terms. A "pro forma" cap table models what ownership will look like after conversion.

After a Priced Round

Series Seed, Series A, and later rounds issue actual preferred shares. The cap table expands to show multiple stock classes:

  • Common Stock (founders, employees)
  • Series Seed Preferred (seed investors)
  • Series A Preferred (Series A investors)
  • Option Pool (reserved shares)

Tracking Options

Employee options require careful tracking. For each grant, record: grant date, number of shares, exercise price, vesting schedule, and expiration date. Track exercises, forfeitures, and cancellations. The option pool decreases as options are granted and increases when forfeited options return to the pool.

Cap Table Management Tools

Spreadsheets

Many early-stage companies use Excel or Google Sheets. This works when you have a simple cap table with few shareholders, but becomes error-prone as complexity grows. If you use spreadsheets, maintain rigorous version control and double-check calculations.

Cap Table Software

Purpose-built tools like Carta, Pulley, AngelList Stack, and Shareworks handle cap table complexity, issue electronic stock certificates, manage option grants, and produce reports. The cost is worth it once you have investors, an option pool, or plan to raise institutional money.

Your Lawyers

Your corporate counsel maintains the legal record of your cap table. They track stock issuances, prepare board consents, and ensure compliance. Your internal cap table should always reconcile with your lawyers' records.

Common Cap Table Mistakes

Not Keeping It Updated

Every stock issuance, option grant, exercise, and forfeiture should be recorded immediately. Letting updates pile up leads to errors. When you need to produce your cap table for investors or acquirers, you don't want to be scrambling to reconstruct history.

Forgetting Convertible Instruments

SAFEs and convertible notes are easy to forget because they're not "real" shares yet. But they represent significant future dilution. Always model your cap table on a pro forma basis including all convertibles.

Misunderstanding the Option Pool

The option pool is included in fully diluted calculations even if most options haven't been granted. A 20% option pool means 20% dilution to all existing shareholders, regardless of whether those options are allocated.

Errors in Early Grants

Mistakes made at incorporation compound over time. Incorrect share numbers, wrong vesting terms, or improper documentation create problems that are expensive to fix later. Get it right from the start.

Not Understanding Dilution

Each funding round dilutes existing shareholders. If you own 50% and raise a Series A that sells 20% of the company, you don't own 30%—you own 40% (50% × 80%). Understanding dilution math is essential for founders.

Granting Too Much Equity Too Early

Giving away large equity stakes to early employees or advisors leaves less for later hires when you'll need to attract top talent. Be thoughtful about equity grants and benchmark against industry standards.

Cap Table Scenarios to Model

Next Financing Round

What does ownership look like after your next round? Model different valuations and investment amounts to understand dilution. How does a $10M round at $30M pre-money differ from $15M at $40M pre-money?

Exit Scenarios

Liquidation preferences mean shareholders don't split proceeds proportionally. Model different exit values to understand who gets what. At a $20M exit, preferred shareholders might get everything. At $200M, everyone participates.

Future Option Pool Increases

Investors often require option pool increases as part of financing. These come from pre-money, diluting existing shareholders. Model how proposed pool increases affect your ownership.

Down Rounds

If you raise at a lower valuation, anti-dilution provisions kick in. Model the impact of weighted average vs. full ratchet anti-dilution on your cap table.

Cap Table Hygiene for Due Diligence

When investors conduct due diligence, they'll examine your cap table carefully. Be prepared with:

Clean Documentation

Every stock issuance should have corresponding board approvals, stock purchase agreements, and 83(b) elections (where applicable). Missing documentation raises red flags.

Reconciliation

Your cap table should match your lawyers' records, your stock ledger, your company's certificate of incorporation, and any cap table software you use. Discrepancies require explanation.

Vesting Schedules

Track vesting status for all shareholders with vesting. Know who is fully vested, who has unvested shares, and what happens to unvested shares in an acquisition.

Convertible Instruments Summary

List all SAFEs, convertible notes, and warrants with their key terms. Model pro forma conversion at various valuations.

Option Grant Detail

Every option grant with dates, amounts, exercise prices, and vesting. Show exercises, cancellations, and forfeitures. Calculate the remaining option pool.

Actionable Advice

For Founders

Start with a clean cap table at incorporation. Use round numbers of shares (10 million is common). Establish your option pool before you need it. Update your cap table within 24 hours of any equity event. Reconcile with your lawyers quarterly.

For Hiring and Compensation

Understand what percentage of the company an option grant represents. Be transparent with employees about how their equity fits into the cap table. Know how dilution from future rounds will affect employee ownership.

For Fundraising

Have your cap table ready before investor meetings. Be able to explain every line item. Model pro forma ownership at proposed valuations. Know your fully diluted share count and how you calculated it.

For Long-Term Planning

Project your cap table forward through multiple financing rounds. How much founder ownership remains after Series A, B, and C? What option pool expansion will investors require? Model scenarios to set expectations.

Cap Table and Company Control

Ownership and control aren't identical but they're related. Key control thresholds:

50%+: Board control (in many structures), ability to pass ordinary resolutions.

66.7%+: Ability to pass most supermajority resolutions.

90%+: Ability to squeeze out minority shareholders in some jurisdictions.

Watch how financing rounds affect these thresholds. Founders often lose majority ownership after Series A or B. Plan board composition and protective provisions accordingly.

The Bottom Line

Your cap table is more than a spreadsheet—it's the legal record of who owns your company and how much. It affects fundraising, hiring, exits, and every major corporate decision. Getting it right requires attention to detail, good systems, and regular maintenance.

Start clean, stay organized, and don't let complexity creep up on you. Use professional tools when you outgrow spreadsheets. Reconcile with your lawyers regularly. Model scenarios before they happen.

A well-maintained cap table is a sign of a well-run company. Investors notice. Employees appreciate it. And when it's time for an exit, you'll be grateful you got it right from the beginning.