Carta is the dominant equity management platform for startups, private companies, and the venture investors who fund them, managing cap tables, option grants, 409A valuations, and fund administration for over 40,000 companies. The platform's centrality to the startup equity ecosystem — used by the majority of venture-backed startups and their investors simultaneously — creates network effects that make cap table data verification and electronic exercise transactions seamless across parties. Cap table management tracks all share classes, option pools, warrant holders, and convertible instruments with automatic dilution calculation as new rounds close. Option administration automates grant documentation, vesting schedule tracking, exercise processing, and tax reporting for employees and the company. The 409A valuation service provides IRS-compliant fair market value determinations by Carta's team of valuation analysts, eliminating the coordination required to engage third-party valuation firms. Carta's liquidity programs facilitate secondary share sales for early employees and investors. The investor access features give VCs a unified view of their portfolio company cap tables without requesting updates from each company individually. Fund administration manages LP capital accounts, distributions, K-1 generation, and carry calculations for venture funds. ASC 718 stock compensation expense reports are generated automatically for financial statement compliance. For companies raising venture capital, Carta is effectively the standard — the platform's market penetration means most institutional investors and law firms prefer or require its use, making adoption not just a preference but an expectation.