Startup Funding Stages: Pre-Seed to Pre-IPO, Explained

The startup funding stages are the rounds a company raises as it grows: pre-seed, seed, Series A, Series B, Series C and later growth rounds, a pre-IPO round, then an IPO or a sale. Each stage prices a different proof, and each one brings a different lead investor to the table.

Founders at pre-seed and CFOs planning a pre-IPO round climb the same ladder, and a smaller share of the 2023 and 2024 seed cohorts has moved on so far than of the cohorts through 2020, with both still open.

What are the startup funding stages, in order?

PitchBook's US medians for the first half of 2026, published by J.P. Morgan, put a round size on each of the startup funding rounds from seed to Series D. Pre-seed and pre-IPO rounds vary too much by deal for one number.

4 columns. Drag the table sideways; the first column stays put.

spectup works from Series A to pre-IPO, with no upper limit on round size, and passes on anything earlier. That's the stretch of the ladder where a startup fundraising consultant earns the fee, because the investor list and the material a lead reads change at every rung.

Pre-seed and seed: proving the problem, then the product

Pre-seed is the first outside money, usually from angels, and it buys the time to show the problem is real and the team can solve it.

Angels in US private rounds usually need to be accredited investors. Under the SEC's test for individuals, that means a net worth over $1M excluding the primary residence, or income over $200,000 ($300,000 with a spouse or partner) in each of the prior two years with the same expected this year, or a Series 7, 65 or 82 licence in good standing.

Seed is the first institutional round. It pays for proof that the product works for the people it was built for, which means usage that holds, customers who pay and a first revenue line.

In Crunchbase's 2025 data, the US seed median is around $3M, three times its 2018 level, with the lower quartile at $1M and the upper quartile at about $5.6M.

One seed fund's managing partner told Crunchbase his firm's average seed cheque rose from $2.5M or less to $4.5M in about 18 months, while it still aims to buy at least 10% of the company.

A bigger seed round raises the Series A bar. The A has to be priced well above the seed, and the metrics have to carry that step.

Pre-seed and seed money usually arrives in the idea and validation phases. The pre-seed vs seed write-up sets out what moves a company from one round to the other.

At seed, a company's own angels and seed funds open better doors than an advisor on a monthly fee.

Why is the gap between seed and Series A the hardest to cross?

Through 2020, the graduation rate for companies with a $1M-plus seed round was 55% or more, meaning that share went on to a later round or an exit. Of the 2023 seed cohort, only 24% have progressed so far, and of the 2024 cohort, 16%.

Since 2023 the time between a $1M-plus seed and a Series A has lengthened for US companies, and it now runs past two years.

A Series A candidate competes with every other deal in the venture market, not only with its own rivals, as the same seed investor put it to Crunchbase. Fewer seed companies clear that comparison, and he expects more of them to fail between seed and Series A.

Neither cohort is finished, and Crunchbase has already revised both rates once. Treat 16% as a number that will still rise.

Series A: the first round priced on metrics

Series A is the first of the startup funding stages where the price stops resting on the story. The 2025 US median Series A was $15M, with the middle half of rounds between $7M and $25M, and Crunchbase reports the median kept rising into 2026; PitchBook puts the first half of 2026 at $20M.

The seed investor quoted by Crunchbase puts the Series A expectation in the AI era at $2M to $3M in annual recurring revenue, even $4M.

Price did not always follow size. In Cooley's Q2 2026 venture financing report, the median Series A pre-money valuation fell while the Series B median rose.

At Series A, we raise for companies with revenue and a metric that's compounding, from the funds that lead at this stage. Before it writes a term sheet, a Series A lead tests the Series A traction metrics and the plan behind the round:

• Revenue mix. How much is recurring, how concentrated it is, and how it was won

• Retention. Whether customers stay and spend more each year

• Acquisition cost. What each new dollar of revenue cost to win, and how fast it pays back

• Use of proceeds. The plan for the money, which the lead can test against the model

The lead's analyst rebuilds the model from the data room before a term sheet is written.

Series B to Series D funding: growth rounds and who leads them

From Series B funding on, the later venture capital stages price how far capital can push a model that already works. Growth is proven and the round is larger than the existing syndicate can carry, so new money comes from growth funds, family offices and strategics, approached in parallel.

In Cooley's Q2 2026 report, the median Series B pre-money valuation rose from $152.5M to $185.2M in one quarter, and the median tech deal size went from $18.5M to $30.5M.

A Series C funding round had a US median of $75M in the first half of 2026 on PitchBook data, against $40M at Series B, and in Cooley's Q2 2026 deals more Series C rounds closed than in the first quarter while their median pre-money valuation fell.

Series D funding had a median of $112M in the same PitchBook data, and it is often the last venture round before a listing or a sale. Its pricing swings hardest. In Cooley's report the median pre-money for Series D and later fell from $2.4B in Q1 to $600M in Q2, which says as much about which deals closed that quarter as about the market.

PitchBook puts the median stake sold at 22% at seed and again at Series A, then 17%, 13% and 9% for Series B, C and D.

What is pre-IPO funding, and where does the ladder end?

A pre-IPO round is the last private round before a listing, raised after Series D or in its place, and it can be primary (new shares) or secondary (existing holders selling). A secondary sale gives early employees and investors cash before the listing without issuing new shares. The investors at this rung are crossover and growth equity funds, which want a position before the IPO prices.

One growth equity conversation from our desk, on a GBP 100M pre-IPO round:

A US growth equity firm writing USD 10M to 75M cheques looks for USD 5M to 10M or more in recurring revenue, and a relationship built over time before it allocates. After a first call on our largest transaction, still running, it sent its own NDA, we signed it and opened the data room.

I'd open growth equity conversations a round before the money is needed.

The listing market a pre-IPO round aims at set a record in 2026. Global IPO proceeds reached $287.5B in the first nine months, EY reported, across 888 listings, against 922 a year earlier.

Dividing EY's totals by its listing counts gives about $324M per listing in 2026, against about $124M a year earlier. The pre-IPO funding round write-up covers how that round is structured and who prices it.

A sale to a strategic acquirer or a private equity buyer ends the ladder as well, often without a pre-IPO round at all. When the owners take that route, spectup runs the sale for them through sell-side M&A advisory.

Startup financing beside each round: debt, notes and SAFEs

Beside the priced rounds, startup financing comes as SAFEs, convertible notes, venture debt and non-dilutive money, and each costs the cap table something different, from shares at a discount to nothing at all.

4 columns. Drag the table sideways; the first column stays put.

A SAFE converts at the lower of two prices: its cap, or the round price less any discount. Above the cap, SAFE holders convert at the cap price while new money pays the round price: at a seed priced at twice the cap, a SAFE dollar buys twice the shares a new dollar does.

The SAFE conversion calculator shows which of the two prices each SAFE in a stack converts at.

Venture debt is priced in interest and fees, and the dilution sits in the warrant. A venture debt term sheet checklist asks whether the lender wants one, how many shares it covers, its exercise price and when it expires. Negotiate the warrant before the rate: the interest stops when the loan is repaid, and the warrant sits on the fully diluted cap table until it's exercised or expires.

spectup arranges debt as part of a capital raise, either structured private debt or a recapitalisation beside the equity round, when the company has revenue and knows what the money is for.

How much of the company do founders keep after each round?

Dilution compounds across the startup funding stages, and instruments from earlier rounds convert in the same round the new money arrives.

Why does the seed round cost founders the most? Because the pre-seed SAFE, the new seed money and a fresh option pool all land in the same round.

Illustrative example, not market data: seed investors take 20% of the company, the converting SAFE 8% and a new option pool 10%. At Series A, new investors take 20% and the pool is topped up by 5%; at Series B, new investors take 15%.

In this example the seed round takes 38 points of ownership, more than Series A and Series B combined at 22.5 points. The pool top-up comes out of the existing holders before the new investor's share applies, so a round costs the founders more than the percentage it sells.

Pro rata rights protect the earlier investors. A seed fund that buys into the Series A keeps its stake, and the founders' numbers in the chart don't move.

Startup company stages vs startup funding stages

The five startup company stages, or phases of startups, describe the business; the funding stages describe the rounds it raises along the way. Most startup stages are defined by what the company has built, not by what it has raised.

• Idea. A problem and a team, before there's a product

• Validation. A first product with first users or customers

• Growth. A repeatable way to win customers, and revenue that compounds

• Expansion. New markets, new products, sometimes acquisitions

• Maturity or exit. Steady cash flow, then an IPO or a sale

A company's phase and the name of its round drift apart. A company deep in its growth phase can still be raising what it calls a seed extension, and a Series B can carry Series A metrics. Phases of startups and funding rounds are two separate scales, so place the company by its metric first and name the round second.

My assessment of the funding ladder in 2026

Investors put $300B into 6,000 companies worldwide in Q1 2026, Crunchbase counted, and four of the five largest venture rounds ever recorded closed in that quarter.

With the money pooled in a handful of very large rounds and most of the 2023 and 2024 seed cohorts still without a later round, the step up to a Series A is the narrowest of all the stages of startup funding, even though early-stage dollars rose 41% year on year, much of it into Series A rounds.

In 2026 the expensive mistake is running out of runway between seed and Series A, and the valuation comes second. A company with compounding revenue and 30 months of cash can wait for the right lead; one with 12 months takes the first term sheet it gets.

How spectup runs a round from Series A to pre-IPO

spectup works for the company raising, and only for that side; the investors are the counterparty we bring in.

1. Readiness and materials. Equity story, pitch deck, financial model and data room, each written for the fund that would lead the round

2. Investor list. The funds that lead rounds at the company's stage, drawn from our direct relationships and partner firms and ordered by who can allocate now

3. Timing. An in-house signal engine catches the week a fund closes or a partner changes firm, and the record of our closed transactions shows which sectors each fund has been backing

4. Outreach and meetings. Personalised outreach timed to those signals, into booked investor meetings

5. Diligence and close. The data room, term sheet review and preparing management and counsel for the negotiation, and the process through to closing

We're paid monthly while the round runs. The success fee comes on top and is owed once the round has closed and the money sits in the company's account.

Which round to prepare for next, and when to start

If you're at seed, count in months: the raise itself takes five to eight months and has to start inside a gap to Series A that now runs past two years, so fund the seed for about 30 months.

If you're at Series A or later, start the next process while the current round still funds at least a year.