Banking Law and Shareholder Litigation in Spain

1. Introduction

Shareholder litigation involving banks in Spain concerns legal actions brought by shareholders, former shareholders, or—in some situations—the company itself concerning the management, governance, securities disclosures, capital raising, restructuring, or resolution of a Spanish bank.

There is no separate Spanish statute called the “Bank Shareholder Litigation Act.” The framework principally combines:

Royal Legislative Decree 1/2010 — Spanish Companies Act (Ley de Sociedades de Capital, LSC);

Law 10/2014 on the regulation, supervision and solvency of credit institutions;

Law 11/2015 on the recovery and resolution of credit institutions and investment firms;

the EU Bank Recovery and Resolution Directive (BRRD);

the Single Resolution Mechanism Regulation (SRMR);

Spanish securities-market legislation;

the EU Market Abuse Regulation and Prospectus framework;

Spanish Civil Code principles; and

Spanish procedural law.

For listed banks, shareholder litigation therefore sits at the intersection of:

company law + securities law + banking supervision + EU resolution law.

2. Who can sue?

Depending on the legal action and circumstances, proceedings can potentially involve:

individual shareholders;

groups of minority shareholders;

former shareholders;

the bank itself;

insolvency representatives;

directors;

regulators or resolution authorities under their separate statutory powers.

Standing depends on the particular cause of action.

A shareholder cannot automatically sue personally for every loss suffered by the bank itself.

This distinction between corporate loss and individual shareholder loss is fundamental.

3. Challenging shareholders' resolutions

Spanish company law allows corporate resolutions to be challenged where the statutory requirements are satisfied.

A resolution can potentially be challenged where it:

violates legislation;

breaches the company's articles;

conflicts with applicable corporate regulations; or

improperly damages the corporate interest for the benefit of particular shareholders or third parties.

The LSC establishes rules concerning standing, grounds and time limits.

For a bank, these rules operate alongside prudential requirements imposed by banking regulators.

4. Minority shareholder protection

Majority shareholders cannot simply use voting power without legal constraints.

Spanish company law contains mechanisms protecting minority investors.

Potential disputes include:

abusive resolutions;

related-party arrangements;

improper exclusion of minority interests;

denial of information rights;

unlawful capital operations;

directors' conflicts of interest.

The principle is not that minority shareholders can veto ordinary commercial decisions. Rather, corporate power must be exercised within the limits imposed by company law.

5. Shareholder information rights

Shareholders possess statutory information rights subject to applicable limitations.

This can become especially complicated for banks because financial institutions possess highly sensitive information concerning:

customers;

regulatory investigations;

risk models;

liquidity;

confidential supervisory communications.

Therefore:

shareholder information rights are not necessarily unlimited rights to every document held by the bank.

Banking secrecy, data protection and supervisory confidentiality can restrict disclosure.

6. Directors' duties

Directors of Spanish banks are subject to the general directors' duties under the LSC as well as the enhanced governance requirements applicable to credit institutions.

Important duties include:

duty of diligence;

duty of loyalty;

avoidance or proper management of conflicts;

acting in the company's interest;

appropriate oversight.

Bank directors additionally operate within prudential governance requirements imposed by Spanish and EU banking legislation.

7. Corporate action against directors

Spanish law recognizes the acción social de responsabilidad—the corporate liability action.

Its purpose is to recover loss suffered by the company because of directors' unlawful or culpable conduct where the statutory requirements for liability are satisfied.

Conceptually:

Director misconduct → damage to Bank → corporate liability claim.

Any recovery belongs to the company rather than automatically becoming personal compensation for an individual shareholder.

8. Individual action

Spanish company law also recognizes an individual liability action where directors' conduct directly harms a shareholder or third party.

This requires an important distinction.

Corporate damage

Bank loses €100 million and consequently shares become less valuable.

That does not automatically mean every shareholder has a personal €100 million-style direct claim against the directors.

Direct individual damage

A director's conduct directly violates a shareholder's individual rights and causes that shareholder identifiable damage.

An individual action may potentially become relevant.

Spanish Supreme Court jurisprudence has repeatedly emphasized the need to distinguish direct individual injury from merely reflective loss caused by damage to the company.

9. Capital increases

Bank shareholder litigation frequently arises from capital operations.

Suppose a bank raises €3 billion by issuing new shares.

Potential disputes could concern:

prospectus accuracy;

disclosure of financial condition;

pre-emption rights;

valuation;

board authority;

shareholder approval.

The fact that the capital increase improves regulatory capital does not eliminate company-law and securities-law requirements.

10. Prospectus liability

A particularly important Spanish example is the litigation surrounding Bankia's 2011 IPO.

Investors alleged that information provided during the offering did not accurately represent Bankia's financial condition.

The resulting Spanish and EU litigation demonstrates that banks raising capital from investors can face private-law consequences where legally required securities disclosures are inaccurate or misleading.

11. Bankia IPO — Spanish Supreme Court, 3 February 2016

The Spanish Supreme Court issued important judgments concerning investors who purchased Bankia shares during its 2011 public offering.

The Court upheld claims based on error in consent connected with serious discrepancies concerning the financial picture presented to investors.

Importance

The cases demonstrated that compliance with the formal process of an IPO does not automatically prevent investors from bringing private-law claims concerning the accuracy of the information on which their investment decision was based.

Banking significance

Bank capital raising therefore involves both:

prudential capital regulation

and

investor protection.

A bank cannot strengthen regulatory capital through an offering while disregarding disclosure obligations owed to investors.

12. Banco Popular Español resolution

The 2017 failure and resolution of Banco Popular Español generated one of Europe's most important groups of bank-shareholder disputes.

The Single Resolution Board determined that Banco Popular was failing or likely to fail. Resolution measures were adopted and Santander acquired the institution.

Existing shareholders and certain creditors suffered major losses.

This generated litigation before EU courts concerning:

resolution decisions;

valuation;

shareholder rights;

access to documents;

procedural rights;

compensation.

13. Aeris Invest v Commission and SRB, T-628/17

Aeris Invest Sàrl v European Commission and Single Resolution Board concerned the resolution of Banco Popular.

The General Court examined challenges to the resolution framework and the actions of EU institutions.

Importance

The litigation illustrates a critical principle:

Shareholder rights in an ordinary solvent company operate differently when a bank enters the special resolution regime.

Bank resolution law can permit substantial interference with shares and capital instruments to preserve financial stability and manage bank failure.

14. Algebris and Anchorage Capital v Commission, T-570/17

This was another significant challenge arising from Banco Popular's resolution.

Investors contested aspects of the resolution process and EU institutional actions.

The litigation demonstrates the tension between:

property/investor interests

and

public-interest objectives of bank resolution.

The special bank-resolution framework can therefore substantially affect ordinary shareholder expectations.

15. Banco Santander, C-410/20, CJEU, 5 May 2022

This CJEU judgment is particularly important.

The dispute concerned investors who had acquired Banco Popular shares before resolution and subsequently sought remedies based on allegedly defective information connected with the acquisition of those shares.

The CJEU held, in substance, that the BRRD framework prevented certain actions designed to obtain compensation or restitution from the successor institution where this would undermine the effects of the resolution and loss-absorption framework.

Importance

This establishes an important distinction:

ordinary securities litigation before resolution

versus

claims after shares have been written down or cancelled through bank resolution.

Resolution law can fundamentally alter the remedies available to shareholders.

16. No-creditor-worse-off principle

EU bank-resolution law contains the important no creditor worse off (NCWO) safeguard.

The basic idea is that shareholders and creditors affected by resolution should not be placed in a worse financial position than they would have occupied under the relevant counterfactual ordinary insolvency proceedings.

This does not guarantee shareholders that their investment will retain value.

It instead creates a valuation-based safeguard within the resolution framework.

17. Shareholder losses and regulatory intervention

A bank's shareholders bear investment risk.

If the bank suffers large losses, equity is normally expected to absorb losses before protected depositors.

Therefore, the fact that regulatory action causes or crystallizes a loss in share value does not itself establish unlawful conduct.

A successful challenge normally requires a legally recognized basis, such as:

unlawful corporate resolution;

director misconduct;

misleading disclosure;

procedural violation;

unlawful resolution action;

other statutory cause of action.

18. Listed banks and market disclosure

Listed Spanish banks are also subject to EU securities-market requirements, including the Market Abuse Regulation (EU) No 596/2014.

Inside information generally must be handled and disclosed according to the applicable rules.

Suppose senior management knows that the bank has suffered a material undisclosed deterioration in financial condition while the market continues trading its shares based on materially different public information.

This can create issues involving:

disclosure;

market abuse;

directors' responsibilities;

potential investor claims.

The precise private-law remedy depends on the relevant legal basis and facts.

19. Insider dealing

A bank director or executive possessing inside information cannot lawfully exploit that information merely because they are also a shareholder.

For example:

Executive learns confidentially that the bank faces a major undisclosed loss → sells shares before public announcement.

This can raise serious issues under the Market Abuse Regulation and potentially other Spanish laws.

Shareholder status does not create immunity from market-abuse rules.

20. Related-party transactions

Related-party dealings can also generate shareholder disputes.

Suppose a controlling shareholder causes a bank to enter into a transaction with another company controlled by that shareholder on unusually favorable terms.

Legal questions can include:

conflict of interest;

directors' duties;

corporate interest;

related-party approval procedures;

prudential related-party restrictions.

Banks face particularly strong concerns because related-party lending can threaten both shareholders and depositors.

21. Derivative-style corporate claims

Where the injury belongs primarily to the bank, Spanish law generally channels the matter through the corporate liability mechanism rather than allowing every shareholder to recover individually for the same corporate loss.

This prevents double recovery.

Example:

Director misconduct → Bank loses €50 million → share price falls.

The primary damage is to the bank.

A shareholder normally needs to establish legally distinct direct harm to pursue the individual directors' liability route.

22. Insolvency versus resolution

Ordinary companies generally enter the standard insolvency framework when they fail.

Banks are different.

A failing bank can fall within the special resolution regime because abrupt ordinary insolvency could threaten:

depositors;

payment systems;

lending;

financial stability.

Therefore, bank shareholder litigation cannot be understood purely through ordinary company and insolvency law.

23. Supervisory decisions

Bank shareholders may also be affected by decisions of the:

Banco de España;

ECB;

Single Resolution Board;

other competent authorities.

However, the ability of an individual shareholder to challenge a supervisory decision depends on procedural standing requirements.

Merely suffering an economic loss because regulation affected the bank does not automatically create standing to challenge every supervisory measure.

Additional Case Laws

24. Trasta Komercbanka and Others v ECB, C-663/17 P, CJEU

Although concerning a Latvian bank rather than a Spanish institution, Trasta Komercbanka is important throughout the Banking Union.

The case dealt with standing to challenge the withdrawal of a bank's authorization.

The CJEU distinguished between the legal interests of the bank itself and those of its shareholders.

Spain relevance

Shareholders cannot automatically substitute themselves for the bank when challenging a regulatory decision directed at the institution.

25. Ledra Advertising v Commission and ECB, Joined Cases C-8/15 P to C-10/15 P

These cases arose from the Cyprus financial crisis.

The CJEU considered claims concerning measures that caused losses to financial-sector investors and depositors.

Relevance

Even during financial-stability interventions, EU institutions remain subject to higher-ranking EU law.

At the same time, establishing liability requires satisfaction of the applicable legal conditions; economic loss alone is insufficient.

26. Kotnik and Others, C-526/14

Kotnik concerned burden-sharing in the banking sector before State aid could be granted.

The CJEU considered requirements affecting shareholders and subordinated creditors.

Significance

Shareholders can lawfully be required to absorb losses before public funds are used to rescue a distressed bank, subject to the applicable legal framework.

This principle is central to modern EU bank resolution.

27. Dowling and Others, C-41/15

This case concerned restructuring of an Irish bank and measures affecting shareholders.

The CJEU accepted that EU financial-stability obligations could justify measures affecting ordinary company-law shareholder powers in exceptional banking circumstances.

Spain relevance

Ordinary shareholder governance rights operate within the wider EU banking framework, particularly during serious financial distress.

28. Practical example — misleading capital raising

Suppose Banco Iberia S.A. announces a €2 billion capital increase.

The prospectus states that the bank has a strong asset-quality position.

Internal information allegedly shows materially larger losses.

Investors buy shares.

Six months later the undisclosed deterioration becomes public and the share price falls dramatically.

Potential litigation could examine:

Prospectus
→ Was legally required information accurate?

Materiality
→ Was the omitted information significant to investors?

Reliance/causation
→ Did the relevant disclosure defect cause legally recoverable loss?

Directors
→ Did management breach applicable duties?

Securities law
→ Were disclosure obligations violated?

The Bankia litigation illustrates why these issues can produce significant shareholder claims.

29. Practical example — bank resolution

Now assume the bank suffers a liquidity crisis and enters resolution.

Existing shares are written down to zero.

A shareholder cannot simply argue:

“I paid €10 per share, therefore the State must repay €10.”

Instead, the analysis shifts toward the specialized resolution framework, including:

legality of the resolution decision;

valuation methodology;

procedural requirements;

shareholder/creditor hierarchy;

NCWO protection;

available judicial-review procedures.

That is the major difference between ordinary shareholder litigation and bank-resolution litigation.

30. Main types of Spanish bank shareholder litigation

31. Evidence

Shareholder litigation can require extensive evidence, including:

board minutes;

financial statements;

prospectuses;

audit reports;

shareholder resolutions;

market announcements;

emails;

valuation reports;

regulatory decisions;

expert financial evidence.

However, access to supervisory material may be restricted by confidentiality rules.

Therefore, shareholders' litigation rights must sometimes be balanced against banking supervisory secrecy.

32. Limitation periods

Spanish shareholder claims are subject to statutory time limits.

The applicable period depends on the cause of action.

For example, a directors' liability claim, challenge to a corporate resolution and securities-related damages claim do not necessarily share the same limitation rules.

Correct classification of the claim is therefore essential before determining whether proceedings remain timely.

33. Relationship with banking supervision

A key principle is that regulatory compliance and civil liability are separate questions.

For example:

ECB does not object to capital plan.

This does not necessarily mean:

shareholders cannot challenge allegedly misleading disclosures.

Likewise:

shareholder litigation succeeds.

does not automatically establish:

prudential banking rules were breached.

The legal regimes overlap but have different objectives.

Conclusion

Shareholder litigation involving Spanish banks operates at the intersection of company law, securities regulation and the EU banking-resolution regime.

Under the Spanish Companies Act, shareholders can use mechanisms concerning invalid corporate resolutions, directors' liability, information rights and minority protection. Listed banks additionally face prospectus and market-disclosure requirements, while Law 10/2014 imposes the enhanced governance framework applicable to credit institutions.

The Bankia IPO litigation demonstrates the importance of accurate information when banks raise equity from investors. By contrast, the Banco Popular litigation—including Banco Santander (C-410/20), Aeris Invest and Algebris/Anchorage—demonstrates that shareholder remedies can change fundamentally once a bank enters the EU resolution regime.

Other important authorities include Trasta Komercbanka, Kotnik, Dowling and Ledra Advertising, which explain the relationship between shareholder rights, supervisory intervention and financial stability.

The central distinction is therefore:

Ordinary bank → company law and securities-law shareholder remedies remain central.

Failing bank in resolution → specialized BRRD/SRMR rules can write down or cancel shareholder interests and substantially affect ordinary remedies.

Accordingly, a Spanish bank shareholder claim should always identify four matters first: who suffered the legally relevant damage, what duty was breached, whether the bank is operating normally or under a resolution framework, and which Spanish or EU cause of action provides the remedy.