Cap Table Calculator

A complete cap table contains: shareholder names and contact information, share class (common, Series Seed preferred, Series A preferred, etc.), number of shares held, price paid per share, grant date and vesting schedule (for options and restricted stock), total percentage ownership (basic and fully diluted), certificate numbers and legal details, conversion ratios (for preferred to common), and liquidation preferences and other economic rights. Most cap table software (Carta, Pulley, Capshare) also maintains a complete audit trail of every transaction — issuances, transfers, cancellations, exercises — and can generate 409A valuations, Section 409A option grant compliance records, and investor reporting documents.

Basic (or undiluted) shares count only the shares that are currently issued and outstanding — founder shares plus shares issued to investors and employees who have exercised options. Fully diluted shares add all potential shares: unexercised stock options (vested and unvested), unissued option pool, warrants, and convertible instruments (SAFEs, notes) on an as-converted basis. Fully diluted share counts are typically 15-30% higher than basic shares for early-stage companies with large option pools. Investors always calculate ownership on a fully diluted basis, and founders should always model their ownership on a fully diluted basis to understand their true economic position.

A 409A valuation is an independent appraisal of a private company's common stock fair market value, required by Internal Revenue Code Section 409A for setting the exercise price of stock options. Options must be granted at or above fair market value to avoid punitive tax treatment for employees (immediate income recognition plus a 20% penalty tax). For startups, the 409A valuation is almost always significantly below the preferred share price paid by investors (due to the liquidation preferences and other rights that preferred shares carry). Companies must obtain a new 409A valuation at least every 12 months, or within 90 days of a material event (new funding round, major business development milestone) that could affect valuation. 409A appraisals typically cost $1,000-$5,000 from qualified valuation providers.

A liquidation preference waterfall determines the order and amount each shareholder receives in an acquisition, merger, or dissolution. In a typical structure, preferred shareholders receive their liquidation preference (their original investment back, or 1x-2x their investment for more aggressive terms) before any proceeds are distributed to common shareholders. Non-participating preferred means investors choose between taking their preference OR converting to common and sharing proportionally. Participating preferred means investors take their preference AND then participate in the remaining proceeds as if converted to common (double dipping). Multiple liquidation preference stacks in Series A, B, and C create a complex waterfall that dramatically reduces common stockholder proceeds at lower exit valuations — founders and employees may receive nothing in exits below the total liquidation preference stack.

Cap table software is essential after any significant financing event. The leading options are Carta (most widely used; comprehensive features including 409A valuations, ESOP administration, and investor reporting; used by 40,000+ companies), Pulley (Y Combinator backed; startup-friendly pricing; strong integrations), Capshare (now part of Carta), and Shoobx (now Fidelity Private Shares). For very early-stage companies (pre-seed, before any significant financing), a spreadsheet is acceptable but should be migrated to proper software before the seed round closes. Excel/Google Sheets cap tables become error-prone and legally risky once there are multiple share classes, option grants, and convertible instruments to track.

Founder secondary sales — where founders sell some of their existing shares to new investors rather than the company raising primary capital — are increasingly common at later stages. Most venture investors require founder consent (and sometimes co-sale rights) for secondary transactions. Secondary sales are typically permitted beginning at Series B or C, and often structured so founders can sell 10-20% of their holdings in conjunction with a new round. The main benefits are providing founders with personal liquidity without requiring an exit, and reducing the incentive pressure that can lead to premature exits. Investors generally support modest founder secondaries because founders with some liquidity are less anxious about timing exits for personal financial reasons.

Pro-rata rights (also called preemptive rights or rights of first refusal) give existing investors the right to invest in future rounds to maintain their ownership percentage. If an investor holds 10% post-Series A, pro-rata rights allow them to invest 10% of the Series B round to maintain that 10% stake. Super pro-rata rights allow investors to invest more than their ownership percentage would suggest. Pro-rata rights must be allocated across all investors who hold them, which can crowd out new lead investors if many existing investors exercise pro-rata. For this reason, Series B and C lead investors often require that existing investors waive or reduce their pro-rata rights as a condition of leading the round, creating complex investor negotiations.