Shareholders’ Agreements in Spanish Corporate Practice
Shareholders’ agreements (private contracts governing internal shareholders’ relations) are widely used in Spanish corporate law to govern voting rights, decision-making processes and share transfers.
Their main advantage lies in flexibility, allowing shareholders to tailor governance structures beyond the company’s articles of association.
However, their contractual nature raises key legal questions—particularly regarding the limits of party autonomy when mandatory company law rules apply.
Legal Framework of Shareholders’ Agreements in Spain
Spanish law does not expressly regulate shareholders’ agreements. Their legal basis stems from the principle of freedom of contract under the Spanish Civil Code.
Spanish case law has traditionally upheld their validity provided that:
- They do not breach mandatory legal provisions
- They do not harm the company or third parties
These agreements are commonly used to introduce control mechanisms, enhanced majority requirements or voting commitments not reflected in the articles of association.
This flexibility has made shareholders’ agreements a standard instrument in complex corporate transactions, particularly in the context of family business reorganisations, startups, and companies with minority investors.
Supreme Court Judgment 1713/2025: Enhanced Majorities and De Facto Unanimity
Supreme Court Judgment 1713/2025 (26 November) addresses the limits of such agreements.
The case concerned a shareholders’ agreement requiring majorities close to 90% for certain corporate decisions.
In practice, this created a de facto unanimity requirement.
This raised a legal issue: the Spanish Companies Act (Ley de Sociedades de Capital) expressly prohibits unanimity clauses in the articles of association.
The key question was whether this restriction could be circumvented through a private shareholders’ agreement.
Limits to Freedom of Contract
The Supreme Court highlights the risk of using shareholders’ agreements to indirectly bypass mandatory company law rules.
Allowing contractual arrangements to achieve what is expressly prohibited in the articles of association would undermine the legal framework governing corporate decision-making.
The Court does not ban enhanced majorities outright but stresses that such clauses must be interpreted in light of mandatory legal limits. It also emphasises that the use of contractual arrangements cannot be turned into a tool to achieve outcomes that the legislator has sought to prevent.
Practical Implications for Drafting Shareholders’ Agreements
This judgment has significant implications for corporate legal practice.
Particular caution is required when drafting:
- Clauses imposing very high majority thresholds
- Mechanisms that effectively result in unanimity
Such provisions may be challenged if they conflict with the spirit of mandatory company law rules.
Therefore, drafting shareholders’ agreements requires balancing contractual freedom with legal constraints.
Conclusion
Supreme Court Judgment 1713/2025 provides an important clarification on the balance between contractual autonomy and corporate law limits.
While shareholders’ agreements remain valid and widely used, their content must comply with mandatory legal provisions governing corporate structures.
Future case law will determine how firmly this doctrine is applied in practice.
Frequently Asked Questions
Private contracts between shareholders regulating internal corporate matters.
It sets limits where agreements conflict with mandatory company law, especially regarding enhanced majorities.
Yes, but they must not circumvent legal prohibitions.
Generally no—they bind only the parties, not the company or third parties.
They can be useful, but must be carefully drafted to avoid legal challenges.
Are you drafting or reviewing a shareholders’ agreement in Spain?
Proper legal structuring is essential to prevent disputes and ensure enforceability.
