SHA Purpose and Parties
The shareholder agreement (SHA) is the contract between the company and all its shareholders that defines the economic, governance, and transfer rights of each share class. It is signed by the company and every shareholder (or, for ESOP holders, governed by the ESOP plan documents that cross-reference the SHA).
The SHA differs from the articles of association in two ways. First, the articles are filed with the company register and publicly visible; the SHA is private. Second, the articles govern the company's relationship with shareholders as a corporate entity; the SHA governs shareholders' relationships with each other. In practice, most economic and governance terms live in the SHA, with the articles containing only the minimum mandatory provisions required by company law.
Every shareholder becomes a party to the SHA on receiving their first share. New shareholders join via a Deed of Adherence that binds them to all existing SHA terms without renegotiation. This is why getting the SHA right at Series A matters — every subsequent investor inherits the framework you build at Series A.
Key Economic Clauses
Anti-dilution protection: defines what happens to existing preferred classes if a future round prices below their conversion price. Broad-based weighted average is the founder-friendly market standard. See [anti-dilution](/captable/anti-dilution) for the full mechanics.
Liquidation preference: defines the order and amount of payouts at exit. 1× non-participating is the founder-friendly default; 1× participating and multi-x preferences are red flags. See [liquidation preference](/captable/liquidation-preference) and [participating preferred](/captable/participating-preferred).
Dividend rights: most growth-stage startups do not pay dividends, but the SHA defines what happens if dividends are declared. Standard structures: cumulative preferred dividends accruing at 6–8% annually (rarely paid in cash, but added to the liquidation preference at exit), or non-cumulative dividends only if declared.
Pre-emption rights: existing investors have the right to participate pro-rata in future rounds to maintain their ownership percentage. Standard at every preferred class; founders also usually have pre-emption rights on their own behalf.
Pay-to-play: existing investors must participate pro-rata in a down round or lose anti-dilution protection (and sometimes preferred status). Founder-friendly when invoked but rare in healthy markets.
Key Governance Clauses
Board composition: defines the number of board seats and how they are filled. Typical Series A: 5 seats — 2 founders, 1 lead investor, 1 existing investor (Seed), 1 independent. See [board composition and voting control](/captable/board-composition-voting-control) for the multi-round evolution.
Reserved matters (protective provisions): a list of decisions that require investor consent or board approval beyond what company law requires. Standard list includes: changing the articles, issuing new shares, taking on debt above a defined threshold, executive hires/fires above a defined level, major acquisitions or asset sales, changing the budget or business plan, and declaring bankruptcy. Founder-relevant: the reserved-matters list can grow from 10 items at Seed to 30+ at Series C, materially constraining operational autonomy.
Information rights: defines what financial reporting investors receive and how often. Standard structure: monthly KPI report + quarterly financials + annual audited financials + board-meeting attendance. Major investors often have additional rights including budget approval, audit observation, and full data access.
Founder commitment: vesting acceleration triggers (typically single or double trigger on change of control), good leaver vs. bad leaver definitions, and post-departure non-compete obligations. See [vesting schedules](/captable/vesting-schedules) for the mechanics.
CEO termination procedures: defines the process for replacing the CEO. Usually requires board majority including the lead investor's consent.
Transfer Restriction Clauses
Right of first refusal (ROFR): company and existing shareholders have first option to buy any shares being sold. Standard 60-day waterfall. See [right of first refusal](/captable/right-of-first-refusal) and [secondary transactions](/captable/secondary-transactions).
Right of first offer (ROFO): a softer variant where the seller must first offer shares to existing holders before approaching third parties. Less procedural than ROFR but less common.
Drag-along: defined majority can force all shareholders to sell in a qualifying exit. See [drag-along and tag-along](/captable/drag-along-tag-along).
Tag-along: minority holders can join a sale that a majority shareholder has negotiated. Pairs with drag-along.
Lock-up: defined periods during which transfers are absolutely prohibited (typically 4 years for founder shares, with cliffs).
How SHA Terms Compound Across Rounds
New investors inherit the existing SHA framework via Deed of Adherence, but they also negotiate new terms specific to their round. The standard expectation is 'at least as favourable as the most favoured existing preferred class' — meaning any concession granted to Seed is automatically extended to Series A and so on.
This is why founder-leverage moments compound. Accepting a non-standard term at Seed (e.g. 2× preference, narrow-based anti-dilution, large reserved matters list) is not a one-round cost; it sets the baseline for every subsequent round. By Series C, an over-generous Seed term sheet can be the single largest cause of founder dilution and operational constraint.
The counter-strategy is to push for amendment of the SHA at each new round. Series A is the easiest moment to clean up Seed-era over-generous terms because the Series A lead has leverage to insist on a clean SHA. Founders who let Series A close without cleanup carry the Seed-era terms to Series B and beyond.
Five Clauses Founders Most Often Accept Without Understanding
1. Reserved matters list: a long list of investor consent rights that creep in beyond the standard 10–15 items. Each additional item is a small operational constraint that compounds. Read the full list and push back on anything that affects day-to-day operations (e.g. hiring below VP level, capex below €100K).
2. Drag-along threshold without class voting: a 75% all-share threshold sounds high but preferred investors can typically meet it alone by Series B. Class voting (majority of preferred AND majority of common) is the founder protection.
3. Minimum-price floor missing from drag-along: drag triggers regardless of exit price unless explicitly capped. Negotiate a minimum exit price (e.g. ≥1.5× total preferences) or common-class consent for sub-preference exits.
4. Participation cap defined as 'aggregate return' rather than 'multiple of investment': aggregate return can be calculated to include dividends, interest, and other non-cash items, inflating the effective cap. Always define the cap as a multiple of original cash investment.
5. CEO termination 'for cause' definition: broad 'cause' definitions (poor performance, failure to meet targets) effectively give the board firing power. Narrow 'cause' definitions limit termination to fraud, gross negligence, or criminal conduct. Negotiate the narrowest possible definition.
When to Use Standard Templates vs. Legal Counsel
Standard templates (BVCA, Invest Europe, Y Combinator post-money SAFE) are appropriate for: small Seed rounds with experienced VCs who have signed the same template before, simple capital structures (single preferred class, no secondary), and uncomplicated cross-border situations (single jurisdiction).
Specialist counsel is essential for: any round above €1M, multi-class preferred structures, cross-border investments (especially US-EU), any structured term (multi-x preferences, participation caps, special voting rights), founder vesting renegotiation, and any recap or secondary transaction.
Budget for €15–40K of legal fees at Seed, €30–80K at Series A, and €80–200K+ at Series B/C. This is real money, but specialist startup counsel saves multiples of their fee by catching non-standard terms that would compound across rounds.
See [protective provisions](/captable/protective-provisions) for the related governance framework and [board composition and voting control](/captable/board-composition-voting-control) for the board-level decisions that interact with SHA reserved matters.