Series A in the European Context
Series A rounds in Europe typically range €3M–€15M in 2026, with a median around €6M–€8M. Lead investors are dedicated Series A funds (Index, Accel, Balderton, EQT Ventures, HV Capital, Earlybird, Atomico, Sequoia Europe, Lightspeed) writing €4M–€10M of the round, often joined by 1–2 follow-on investors from the seed round (pro-rata rights) and occasionally a strategic.
Expected metrics for a Series A in Europe in 2026: B2B SaaS typically needs €750K–€2M ARR with 15%+ MoM growth and net revenue retention above 100%; B2C consumer companies need defensible engagement metrics (DAU/MAU, retention curves) and a credible monetisation path; deep tech needs technical proof points and a defined commercialisation roadmap with one or two anchor customers.
Valuations: €15M–€40M pre-money is the median range for B2B SaaS at Series A in 2026, with outliers at €60M+ for category-defining companies. Dilution to new investors typically lands 15–25%.
The New Preferred Share Class
Series A creates a new share class — "Series A Preferred" or "Preferred A" — with rights senior to (or pari passu with) the existing seed preferred and senior to common. The class is typically created in the Articles amendment and given a dedicated set of contractual rights in the amended Shareholders Agreement.
Standard Series A preferred rights in Europe: 1× non-participating liquidation preference; broad-based weighted average anti-dilution; pro-rata participation right on future rounds; information rights (monthly KPIs, quarterly financials, annual audited accounts); one board seat plus board observer for follow-on lead; protective provisions over a defined list of corporate actions.
Seniority structure matters. The market default in Europe is pari passu seniority with the seed preferred — both classes are paid in proportion to their preference amounts on exit. Stacked seniority (Series A senior to seed) is more aggressive and concentrates payouts at the top of the stack. See the [exit waterfall guide](/captable/exit-waterfall) for the mechanics.
If the seed had any non-standard terms — multi-x preference, participating preferred, weighted voting — those propagate forward unless the Series A term sheet explicitly resets them, which requires seed investor consent.
Option Pool Top-Up: Who Pays
The Series A term sheet almost always requires the option pool to sit at 10–15% on a post-money fully-diluted basis. If your existing pool is smaller, the top-up is created pre-financing and comes out of the pre-money — meaning existing shareholders (founders, employees, seed investors) absorb the dilution, not the new investor.
This is the single most expensive misunderstanding in Series A negotiation. A €18M "pre-money" valuation with a 10% post-money pool top-up from a 5% existing pool is materially worse than a €15M pre-money with a pool top-up from the existing 10% level. The effective valuation moves by 2–3 percentage points of founder ownership.
Negotiating tactic: push the option pool into the post-money calculation, or limit the pool top-up to a hire plan you actually need for the next 18 months. Investors will counter with "we need to see headroom for 12 months of hiring." Quantify it: list the roles, estimate the grant size per role, and back-calculate the minimum pool size. The [option pool shuffle guide](/captable/option-pool-shuffle) covers the math in detail.
Board Composition and Governance
Standard Series A board in Europe is 3 seats: one founder (typically the CEO), one lead investor representative, one mutually-agreed independent director. The independent is often a successful operator the investor sponsors but who is acceptable to the founders.
Variants: 5-seat boards (2 founders, 2 investors, 1 independent) appear when there is significant follow-on participation from seed funds with board rights. 3-seat boards with 2 investors and 1 founder are aggressive and should be avoided — they flip control to investors on every contentious decision.
The lead investor's board seat typically comes with formal observer rights for follow-on co-leads. Observers attend board meetings, receive board materials, and have no formal vote — but materially shape outcomes through informal pressure. See [board composition and voting control](/captable/board-composition-voting-control).
Protective provisions at Series A typically include: issuing new senior share classes, amending the articles, selling the company, raising debt above €1M–€5M, declaring dividends, increasing the option pool, changing the board size, hiring or firing the CEO. Each item requires consent of the preferred shareholders (typically by majority of the preferred class). See [protective provisions](/captable/protective-provisions) for negotiating the scope.
Seed Investor Position Post-Series A
Seed investors with pro-rata rights exercise them at Series A to maintain their percentage ownership. A seed investor at 5% post-seed who exercises pro-rata at a €6M Series A invests an additional €300K (5% of €6M) to remain at 5% post-Series A.
Seed investors without pro-rata rights, or who choose not to exercise, are diluted from their post-seed ownership by the Series A round percentage. A 5% seed investor without pro-rata exercise becomes a ~3.75% holder post-Series A (5% × (1 − 25%) approximately).
Whether seed investors exercise pro-rata depends on fund stage, available reserves and conviction. Most institutional seed funds reserve 2× to 3× the initial cheque for follow-on; they will exercise pro-rata at Series A if metrics are strong. Angels and smaller funds often choose not to participate.
This dilution is structural and predictable. Model it before closing using CAPLINK's [cap table management](/captable/cap-table-management) module so every existing shareholder sees their post-Series A position before the deal closes.
Use the [Series B and growth rounds guide](/captable/series-b-growth-rounds) to model what your Series A cap table looks like 18–24 months later when growth-stage money lands.