The whole article in four lines
- Your outcome is percentage times value: dilution makes you richer whenever each outside euro creates more than a euro of company.
- A solo founder lands around 30% after Series C; with a co-founder, roughly 15% each.
- Below the liquidation preference stack your percentage means nothing: you can own 30% and take home €0.
- The pre-money pool, post-money SAFE stacking and the anti-dilution clause move more money than the headline valuation does.
1. The goal is not to maximise your percentage
Your outcome is not a number on a cap table, it is the product of two factors that move in opposite directions every time you raise. Optimising only one of them is a rookie mistake.
Outcome = ownership % × company valueThe right question is not “how much am I diluted?” but “does each outside euro create more than a euro of company value?”. If the answer is yes, dilution makes you richer. If it is no, every round is self-inflicted value destruction dressed up as a milestone.
100% of a company doing €400k in revenue is worth less than 8% of one worth €300M.
2. The real arithmetic of dilution
A standard venture-backed trajectory with a single founder. The point is that dilution does not add up: each round applies to whatever is left after the previous one, so it compounds.
See the numbers
| Event | Dilution | Founder % |
|---|---|---|
| Start | — | 100.0% |
| 10% option pool (pre-money) | 10% | 90.0% |
| Pre-seed | 15% | 76.5% |
| Seed | 20% | 61.2% |
| 5% pool top-up | 5% | 58.1% |
| Series A | 20% | 46.5% |
| 5% pool top-up | 5% | 44.2% |
| Series B | 18% | 36.2% |
| Series C | 15% | 30.8% |
A solo founder ends up around 30% after Series C. With two founders, roughly 15% each. Practically no founder who raises venture capital still holds half the company by Series C: the arithmetic above is why.
3. The liquidation preference stack: the silent killer
This is where mid-range outcomes disappear, and you cannot see it by looking at your percentage. Say you have raised €30M in total, every round with a 1x non-participating preference. You end up with 30%; employees hold 15% and investors 55%.
What you actually take home in each exit scenario looks nothing like what your percentage suggests.
€0 while owning 30%
See the numbers
| Sale price | Naïve payout (30%) | Actual payout |
|---|---|---|
| €25M | €7.5M | €0 |
| €40M | €12M | €6.7M |
| €100M | €30M | €30M |
| €300M | €90M | €90M |
At €25M the investors take the entire €25M through their preference and you walk away with nothing while owning 30% of the company. Your percentage is irrelevant below the preference stack, and the modal startup exit lands squarely in that zone. If the preference is participating (double dip) or carries a 2x multiple, the range of exits where you see nothing gets much wider.
A high valuation on bad terms is worse than a low valuation on clean terms. Founders negotiate the headline and give away the fine print.
4. The pre-money option pool shuffle
The investor says: “we are coming in at €8M pre-money, but you need a 15% post-money option pool”. That pool comes out of the pre-money, not out of the money going in, so the valuation you are really signing is a different one.
Effective pre-money = €8M − (15% × €8M) = €6.8MPre-money on the term sheet
Effective pre-money
And you carry 100% of the pool dilution, not the investor. It is the highest effort-to-euros negotiating point in an entire seed round, and almost nobody pushes back on it.
5. Post-money SAFE stacking
A pre-money SAFE dilutes alongside the other SAFEs. A post-money SAFE — the Y Combinator standard since 2018 — does not: each one locks in a guaranteed fixed percentage of the post-money, and you absorb all of the cross-dilution.
- €200k10%
- €300k7.5%
- €500k6.25%
See the numbers
| SAFE round | Amount | Post-money cap | Ownership taken |
|---|---|---|---|
| 1 | €200k | €2M | 10.00% |
| 2 | €300k | €4M | 7.50% |
| 3 | €500k | €8M | 6.25% |
| Total | €1M | — | 23.75% |
Almost a quarter of the company handed over before a priced round even exists — and then Series A dilutes on top of that. Founders who raise “just a bit more” three or four times on post-money SAFEs arrive at Series A below 50% without noticing: the conversion is not intuitive and people do the maths in their head in pre-money terms.
6. Anti-dilution in down rounds
If the next round prices below the last one, the anti-dilution clause decides who pays for the mispricing. Two drafts are common, and the gap between them is enormous.
| Clause | Effect | Read |
|---|---|---|
| Full ratchet | Reprices every previous investor’s conversion down to the new price. The common stock pays for it — that is you. | Red flag at seed |
| Weighted average broad-based | Adjusts proportionally to the size of the down round. | Reasonable and standard |
If someone puts full ratchet in a seed term sheet, that is a red flag about the whole counterparty, not just about the clause.
7. Control and economics are separable
You can hold a small economic stake and still control the company: at the large tech companies that is the norm, via multiple-voting-class shares. They are two independent axes and it pays not to confuse them.
In Spain there is an underused version of this. In an SL (the Spanish private limited company), the articles of association can depart from strict proportionality between capital and votes under article 188.1 of the Ley de Sociedades de Capital — something an SA cannot do, and something that has no direct equivalent in a Delaware C-corp, where you would use a dual-class structure instead. In Spain the toolkit is:
Economics
Dilutes round after round
Control
Does not have to dilute
- Shares carrying multiple votes
- Non-voting shares
- Reinforced majorities written into the articles
- The composition of the governing body
You can give up a fair amount of economics and still govern, and that is usually far more efficient than fighting over three percentage points. Whichever jurisdiction you are in, check the drafting with corporate counsel before structuring it: the exact wording is what does the work.
8. The co-founder split is where the problem starts
The classic failure: two founders at 50/50, no shareholders’ agreement, no vesting. One of them leaves after eight months and keeps half the company forever while the other one works for seven years.
That kills the company, because no investor will touch a cap table like it. The initial split and the vesting are the same conversation, and having it now is far cheaper than signing an emergency shareholders’ agreement two years from now.
9. Vesting does not protect you from investors, it protects you from your co-founder
A co-founder fired two years in kept her stake because it had already vested; had she left before the cliff, nothing. That is the entire job of vesting: telling the difference between having been there and having stayed.
The market standard has not moved in years, and there is no reason to invent your own:
Leaving here = nothing vested
- Duration
- 4 years
- Cliff
- 12 months
- Acceleration
- Double trigger (change of control + termination)
- Single-trigger acceleration
- Never: it prices up or breaks an acquisition
In a Spanish SL this is instrumented through the shareholders’ agreement, with reciprocal call options and different exercise prices depending on whether the leaver is a good leaver or a bad leaver. Pure corporate reverse vesting is clumsier there than it is in Delaware, where restricted stock with a repurchase right does the same job natively.
10. The other path: not raising
A business with high gross margin and a short cash cycle funds itself. Gymshark is the textbook case: outside capital was unnecessary, and taking it would have meant giving away equity for nothing. The quick test fits in three rows.
High margin, short cycle, fragmented market
Bootstrap. Capital does not buy an advantage.
Winner-take-all, network effects, distribution war
Raise. 60% of second place is worth less than 12% of first.
R&D-heavy with years until revenue
Raise, or you do not exist.
The mirror image of over-diluting is keeping 100% of something that needed fuel and stayed small. Keeping your equity is not a virtue in itself: it is the right answer only for a certain kind of business.
11. Secondaries: sell a little so you can risk a lot
A founder whose entire net worth sits in illiquid paper makes bad decisions: refusing risk when they should take it, and selling the company too early out of financial fatigue.
Selling 5-15% of your stake at Series B or C — as a secondary, not as part of the round — removes that pressure and usually improves the decisions that follow. Good investors understand this. The ones who flatly refuse are telling you something about how they see you.
12. An actionable checklist for early-stage founders
Frequently asked questions
How much does a founder get diluted by Series A?
On a standard path with a 10% pre-money option pool, a pre-seed, a seed and a pool top-up, a solo founder reaches Series A at around 46% and leaves it close to 44%. With two co-founders, halve that each. Dilution does not add up: each round applies to whatever percentage survived the previous one.
What is a liquidation preference and how does it affect me?
It is the investor’s right to get their money back before founders see anything when the company is sold. With a 1x non-participating preference and €30M raised, the first €30M of the sale price goes entirely to investors. If the preference participates or carries a 2x multiple, they take that and then their percentage of whatever is left.
Can I end up with nothing while owning 30% of the company?
Yes, and it is more common than it sounds. With €30M raised and a €25M sale, the preference stack absorbs the entire price and the common stock gets zero, no matter that you own 30%. Below the stack your percentage means nothing, and the typical startup exit lands right in that zone.
Do post-money SAFEs dilute more than pre-money SAFEs?
Yes. A pre-money SAFE dilutes alongside the other SAFEs; a post-money SAFE guarantees its investor a fixed slice of the post-money and pushes all the cross-dilution onto the founder. Three post-money SAFEs of €200k, €300k and €500k at €2M, €4M and €8M caps add up to 23.75% before a priced round even exists.
Can I keep control even as I get diluted?
Yes, though the mechanism depends on where you are incorporated. In Spain, article 188.1 of the Ley de Sociedades de Capital lets an SL’s articles depart from proportionality between capital and votes, using multiple-voting shares, non-voting shares, reinforced majorities and board composition. In Delaware you get to the same place with a dual-class structure. Either way, have corporate counsel draft it.
What is the standard vesting schedule, and why a 12-month cliff?
Four years of vesting with a twelve-month cliff and double-trigger acceleration, meaning change of control plus termination. The cliff exists because the first year has the highest founder mortality: if someone walks at month eight, the company is not left with a broken cap table. Single-trigger acceleration prices up or breaks an acquisition, so avoid it.
This article is for information only and is not legal or tax advice. The Spanish law references (LSC article 188.1, the Startups Act, the tax treatment of options and phantom shares) apply in Spain and not elsewhere. Articles of association, shareholders’ agreements and incentive plans should be closed with a corporate lawyer and a tax adviser in your own jurisdiction.