How Startup Funding Rounds Work, Stage by Stage

Startup funding is described with a vocabulary that obscures how simple the underlying transaction is. A company sells a portion of itself for cash. Everything else — the round letters, the valuation language, the term sheet clauses — is detail about how much, at what price, and with what strings.

The strings are where most of the consequence lives, and they get the least coverage.

The stages

The letters describe roughly what a company has proved, not how much it raised.

The boundaries are soft and have shifted over time. A modern seed round is frequently larger than a Series A from a decade ago.

Dilution

Every round issues new shares, so existing holders own a smaller percentage. This is not inherently bad — a smaller slice of a larger business can be worth considerably more — but the arithmetic compounds and founders routinely underestimate it.

A founder starting with full ownership who sells 20% at seed, 20% at Series A and 15% at Series B holds under half the company, before accounting for the employee option pool. That pool is usually expanded at each round, and typically comes out of existing holders rather than the incoming investor.

Why the headline valuation is not a valuation

A round announced at a large valuation is reporting a number derived from arithmetic: amount raised divided by percentage sold. It is not an appraisal, and it is not what the company would fetch in a sale.

It also ignores the terms attached, which is where the real price is set.

Liquidation preferences

Preferred shares usually carry a liquidation preference: investors get their money back before common shareholders — founders and employees — receive anything.

A 1x non-participating preference is standard and reasonable. Multiples above that, or participating preferences where investors take their money back *and* share in the remainder, change the outcome dramatically in any sale that is not spectacular.

This is how a company can sell for a headline-grabbing sum while employees holding common shares receive very little. The preference stack was paid first. A high valuation with aggressive preferences can leave founders worse off than a lower valuation on clean terms.

Convertible instruments

Early rounds often use convertible notes or SAFEs, which postpone the valuation question. Investors give money now and convert to equity at the next priced round, usually at a discount or subject to a cap on the conversion price.

This is faster and cheaper than negotiating a valuation for a company with no operating history. The risk is accumulation: several uncapped or generously capped instruments converting at once can dilute founders far more than expected, and the maths is not obvious until it happens.

What investors are actually solving for

Venture funds operate on a power law. Most investments return little; a small number return enough to carry the fund. This shapes behaviour in ways founders often misread.

An investor is not looking for a business likely to do modestly well. They are looking for one with a plausible path to becoming very large, because a solid company that returns twice the investment does not change a fund's outcome. It explains why investors push for aggressive growth even where a slower path would build a sounder business — their portfolio maths differs from the founder's, whose entire outcome rests on one company.

Governance: what investors get besides shares

Term sheets allocate control as well as economics, and the control provisions frequently matter more than the valuation.

Board composition is the most consequential. A board that begins as two founders and one investor becomes something else entirely after two more rounds, and the board hires and fires the chief executive.

Protective provisions give investors veto rights over specified decisions — selling the company, issuing senior shares, changing the share count, sometimes budgets above a threshold. Each is individually reasonable. Accumulated across several rounds with different investors, they can mean a decision requires assent from several parties whose interests have diverged.

The down round, and how it is handled

Raising at a lower valuation than the previous round is the situation most term-sheet mechanics are designed for.

Anti-dilution provisions adjust earlier investors' conversion terms so they are compensated for the lower price. Full-ratchet provisions reprice their entire holding as though they had invested at the new price, which is severe; weighted-average provisions, the more common form, adjust partially based on how much is raised.

Either way the dilution lands on common shareholders — founders and employees. A down round can therefore move a founder's ownership sharply even though the amount raised was modest.

The practical response is usually a recapitalisation, sometimes with a fresh option pool to retain staff whose existing options are underwater. These negotiations are difficult, and they are why the terms agreed in good conditions matter most in bad ones.

Questions worth asking early

Before terms are agreed: what is the full preference stack after this round, how large is the option pool and who bears its dilution, what governance rights come with the investment, and what happens if the next round prices lower.

That last question is the one founders skip in good conditions and regret in bad ones.