A Series A is typically a startup's first major priced round of venture funding, raised after a seed round once the company has real evidence, usually revenue or strong usage growth, that the business model works.
Unlike a seed round, a Series A is almost always priced rather than run on SAFEs, which means real diligence: a lead investor sets the valuation, and the round typically comes with a board seat, a full set of investor protections, and much more thorough scrutiny of the company's financials and cap table than a seed round usually involves.
This is exactly the point where messy books or an unclear cap table stop being a minor inconvenience and start being a real risk to the round. A company that hasn't kept clean records since the seed round often finds itself doing a rushed cleanup right when it can least afford the delay.
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