A cap table (capitalization table) is a record of all equity ownership in a company — who holds shares, options, warrants, and convertible instruments, and in what amounts. It tracks the full ownership structure of a startup from founding through each funding round, and it is one of the first documents an investor requests during diligence on any priced round.

A typical cap table includes: founders' shares (and their vesting schedules), employee stock option pool (ESOP) (typically 10–20% of post-money cap table set aside for hires), angel investors and their stakes, convertible instruments (SAFEs, notes) and their terms (caps, discounts, accrued interest), and venture investors with their ownership percentages, investment amounts, and any special rights (board seats, pro-rata, MFN). Modern cap tables are managed in dedicated software (Pulley, Carta, Capdesk, Cake) rather than spreadsheets, because conversion modeling under different scenarios is error-prone in Excel and gets harder with each successive round.

Investors review the cap table carefully before making an investment. They are looking for: founder ownership (are founders sufficiently incentivized? Founders should hold 60%+ at seed, 40%+ at Series A, 25%+ at Series B as a rough heuristic), option pool size (is there enough runway for key hires? Typical pool is 10–15% pre-Series-A, 12–18% at Series A), clean structure (no unusual terms, no debt-like convertibles with off-market interest rates, no preferred shares with aggressive liquidation preferences), and existing investor quality (Are prior backers institutional? Will they participate pro-rata? Do any have rights that block future rounds?).

Founder vesting is a standard requirement at any institutional round. The market standard is a four-year vest with a one-year cliff: 25% vests after one year, then the remaining 75% vests monthly over the next 36 months. Founders who haven't set up vesting on their own shares often find investors require it as a closing condition, which can be uncomfortable to negotiate retroactively. Setting up founder vesting at incorporation is the cleaner path.

Option pool expansions ("topping up the pool") are common at each priced round. Investors typically require the pool be sized to cover the next 12–18 months of hiring before they invest, and the expansion comes out of the pre-money valuation — meaning it dilutes existing shareholders (mostly founders) rather than incoming investors. Founders should model this dilution carefully: a $2M Series A at $10M pre-money with a 10% pool top-up effectively dilutes founders by another 8.3% beyond the headline dilution of the round.

A clean, well-organized cap table signals that founders understand the mechanics of equity and have managed prior fundraising professionally. Overly diluted founders (under 25% at seed), complex structures with unusual terms, or messy early arrangements (verbal promises to advisors, undocumented "co-founder" claims) are red flags that can slow or kill investment conversations. Maintaining the cap table in real-time using Pulley or Carta — not as a side project that gets updated under pressure during diligence — is the operational practice that prevents these issues.