Spanish shareholders' agreement (pacto de socios)
A pacto de socios is the agreement between the partners of a Spanish limited liability company (sociedad limitada, S.L.). It covers what the articles do not: how the shares (participaciones) are split and vested, who manages the company, which majorities apply, how shares can be transferred and what happens when a partner leaves.
- Jurisdictions
- Spain
- Contract languages
- Spanish, English
What it is and when it is used
A pacto de socios (a shareholders' agreement outside the articles) is signed by the partners of a Spanish S.L. that has been or is about to be incorporated. It supplements the articles with rules the partners want between themselves: share split and vesting, time commitment, intellectual property, the management body, voting majorities, non-compete, confidentiality, transfers and exit. According to the catalogue, the current version also covers voting structure (plural-vote participaciones under article 188.1 LSC, vote syndication, non-voting participaciones), reserved matters, anti-dilution, profit distribution, deadlock, enforcement tools (penalty clause, call option, ancillary obligation with exclusion) and the term of the pacto.
Who signs it and in which role
Socio A and Socio B (the partners, usually the founders) sign it. The options show which position favours each of them: broadly, Socio A seeks more control and protection for the company, Socio B more individual flexibility.
Key clauses
Shares and vesting
Equal, contribution-based or role-weighted split. Vesting over four years with a one-year cliff, three years with a six-month cliff, two years with no cliff, or by milestones; acceleration on a change of control can be none, single, double or partial.
Commitment, roles and intellectual property
Full-time and exclusive, full-time non-exclusive, or part-time with a transition. Roles as joint and several directors (administradores solidarios), a managing director (consejero delegado) with a board, or a functional split. Intellectual property can be fully assigned, assigned with a licence back, or limited to work product; prior inventions can be disclosed and licensed, disclosed only, or left undisclosed.
Management body and majorities
Joint directors (mancomunados), a rotating sole director, or a board of directors. Simple majority, two-thirds for reserved matters, unanimity for key matters, or a three-tier system.
Non-compete and confidentiality
A strict two-year or moderate one-year non-compete (both with compensation), or one limited to the period of involvement. Confidentiality can be perpetual, three years after exit, or limited to trade secrets under Law 1/2019.
Leavers and transfers
Good leaver and bad leaver pricing; a three-year lock-up, right of first refusal or board consent; tag-along and drag-along rights.
Disputes
Madrid courts, arbitration at the Madrid Court of Arbitration, or mediation (Law 5/2012) followed by arbitration or courts.
What the two sides usually negotiate
When the partners disagree, Dealroom proposes the balanced options: equal split, four-year vesting with a one-year cliff, double-trigger acceleration, full-time non-exclusive commitment, solidarios or mancomunados directors, a two-thirds or tiered majority, three-year confidentiality, moderate leaver terms (a bad leaver sells at 50% of market value), a right of first refusal, and mediation followed by arbitration. A strict non-compete, a 75% drag-along and nominal-value bad leaver terms favour Socio A; two-year vesting with no cliff, single-trigger acceleration and no drag-along favour Socio B. Each proposal is weighted by how firmly each side holds its position.
Jurisdictions and languages Dealroom supports for it
This agreement is drafted under Spanish law only, in Spanish or English. It is governed by the Ley de Sociedades de Capital, the Civil Code and the Commercial Code, with disputes before the courts of the registered office and the option of prior mediation or arbitration. For companies in California or England and Wales, use the shareholders agreement.
Common mistakes
- Assuming the pacto binds the company. Only terms included in the articles can be relied on against the company.
- Vesting with no mechanism. It needs a call option or forced transfer obligation.
- No express IP assignment. Founders who are self-employed or directors need an explicit assignment.
- Undisclosed prior inventions. Clear records prevent disputes in investor due diligence.
- Non-competes without compensation or proportion. Courts assess scope, duration and compensation.
- Drag-along without price protection. Spanish courts have upheld drag-along clauses that include fair price protections.
Frequently asked questions
What is a pacto de socios?
It is a private agreement between the partners of a Spanish S.L. that regulates their internal relationship: the split of participaciones, governance, transfers and exit. The Dealroom template states that it is contractual under article 29 of the Ley de Sociedades de Capital and cannot be relied on against the company except to the extent its terms are included in the articles.
Is founder vesting enforceable in a Spanish S.L.?
Spanish law has no statutory concept of vesting, but contractual vesting is enforceable under freedom of contract (article 1255 of the Civil Code). It is usually implemented through a call option or a forced transfer obligation over unvested participaciones.
How are participaciones transferred in an S.L.?
Articles 107 to 112 of the Ley de Sociedades de Capital regulate transfers, and by default transfers to non-partners need authorisation. The pacto can add a lock-up period, a right of first refusal (derecho de adquisición preferente) or board consent.
How long can a post-exit non-compete last in Spain?
The template notes that post-contractual non-competes under article 21.2 of the Workers' Statute are limited to two years and require adequate compensation. Its options pay 60% of the last monthly remuneration for a two-year restriction or 40% for a one-year restriction.
In which languages can the pacto de socios be drafted?
Dealroom drafts it under Spanish law only, in Spanish or in English.
Two ways to make it
Create it in Dealroom
Choose the jurisdiction and language, answer a few questions and negotiate each clause with the other side, or prepare it alone.
Start in DealroomHave your agent draft and negotiate it
Your AI agent can read the clause library and create the contract through the agent API or the MCP server. A short example:
MCP: list_templates (query: "PACTO_SOCIOS"), get_template, create_playbook, initiate_negotiation.
# 1. Read the clauses, options and the facts it needs
curl https://dealroom.todo.law/api/v1/agent/templates/PACTO_SOCIOS \
-H "Authorization: Bearer drk_YOUR_KEY"
# 2. Create the contract (clauses you leave out take the default option)
curl -X POST https://dealroom.todo.law/api/v1/agent/deals \
-H "Authorization: Bearer drk_YOUR_KEY" \
-H "Content-Type: application/json" \
-H "Idempotency-Key: $(uuidgen)" \
-d '{
"schema": "dealroom.solo-intake/1",
"contractType": "PACTO_SOCIOS",
"governingLaw": "SPAIN",
"language": "en",
"dealName": "Example PACTO_SOCIOS",
"selectionPolicy": "defaults"
}'Drafting and negotiating are free.
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This page explains how the contract usually works. It is general information, not legal advice.