Controlling the Share Capital of an SAS: Mechanisms, Clauses, and Legal Framework

The Société par Actions Simplifiée (SAS) has become one of the most popular corporate forms in France, particularly for entrepreneurs, family-owned businesses, and investors looking for flexibility. One of its most distinctive features lies in the ability to control and organize its share capital through tailor-made statutory clauses. Unlike the rigid framework of the public limited company (SA), the SAS allows shareholders to shape in detail how shares may be transferred, under what conditions investors can join or leave, and how voting rights are structured.

But controlling share capital in an SAS is not only a matter of contractual freedom. It is also a matter of legal security, strategic planning, and compliance with the French Commercial Code. Poorly drafted clauses may cause litigation or be declared void, while well-crafted provisions can ensure stability, protect founders, and facilitate future investment rounds.

This article provides a comprehensive analysis of how to control the share capital of an SAS, the tools available under the law, the practical mechanisms used by practitioners, and the key responsibilities and risks associated with these choices.

1. Why Control the Capital of an SAS?

The reasons for seeking strong control over the capital of an SAS vary depending on the company’s profile and strategic objectives. In practice, four main goals emerge:

• Preserving shareholder stability. In family-owned or patrimonial companies, stability of ownership is essential to ensure the transmission of know-how, the safeguarding of long-term strategies, and protection against speculative investors.

• Controlling the entry of outsiders. Founders often wish to avoid the arrival of competitors or investors who might disrupt the balance of power. Restricting share transfers allows the existing group to preserve cohesion.

• Facilitating organized exits. Capital control also plays a role in enabling the smooth departure of certain shareholders, whether they are founders wishing to retire, employees who have invested through stock options, or early-stage investors seeking liquidity.

• Adapting political and financial rights. In times of fundraising or transmission, it is often necessary to modulate voting rights and dividend rights to align with the expectations of investors, while maintaining control for founders.

In short, capital control in an SAS is about anticipation and balance: anticipating the company’s growth and shareholder movements, and balancing the interests of various categories of investors.

2. Statutory Freedom: The Foundation of Capital Control

One of the greatest strengths of the SAS lies in its statutory freedom. The French Commercial Code allows shareholders to draft articles of association with considerable latitude.

2.1 Degree of Control Set by the Articles of Association

The statutes may establish very different regimes: from total freedom of transfer (where shareholders may sell their shares without restriction) to strict and binding rules (where transfers are subject to approval, temporary inalienability, or even automatic exclusion).

The SAS also permits control not only over shares themselves but also over securities that give access to the capital, such as warrants or convertible bonds. This is a powerful feature when managing financial instruments in the context of fundraising or employee participation.

2.2 Selective and Adaptable Mechanisms

Statutory clauses can be highly selective, targeting only specific categories of shares or particular groups of shareholders. Examples include:

• A clause prohibiting founders from transferring their shares for a fixed period of 10 years.

• A clause requiring approval of the company before any transfer to a non-approved third party.

• A right of preemption in favor of existing shareholders.

• An automatic exclusion mechanism triggered by a change of control in the hands of a shareholder.

This adaptability makes the SAS a contractual laboratory where shareholders can design mechanisms suited to their strategy.

3. Legal Clauses of Capital Control Recognized by the Commercial Code

Although the SAS offers great freedom, French law also frames this flexibility by explicitly providing for certain types of clauses.

3.1 Inalienability Clauses (Article L. 227-13 C. com.)

These clauses prohibit any transfer of shares for a maximum duration of 10 years. Their adoption or modification requires the unanimous consent of the shareholders.

Such provisions are commonly used to ensure stability in the early years of a company, particularly in family businesses or innovative startups where founders wish to remain bound together.

3.2 Approval Clauses (Article L. 227-14 C. com.)

Approval clauses make any transfer of shares subject to the prior consent of the company. Since the 2017 ordinance reform, these clauses can be adopted or amended by a simple statutory majority, without the need for unanimity.

They are one of the most commonly used tools to block unwanted investors from entering the capital.

3.3 Exclusion Clauses (Articles L. 227-16 and L. 227-17 C. com.)

Exclusion clauses allow the company to exclude a shareholder under specific conditions, for example, in the event of a change of control over that shareholder.

The Soilihi law of 2019 removed the requirement for unanimity in adopting or amending these clauses (except in certain cases provided by Article L. 227-17).

3.4 Combination of Clauses

The law permits the combination of mechanisms, such as coupling an inalienability clause with an exclusion clause. While this increases protection, it also requires careful drafting to avoid contradictions and ensure enforceability.

4. Other Clauses of Capital Control: Encouraging Contractual Creativity

Beyond the statutory clauses, practitioners often introduce contractual mechanisms not expressly mentioned by the law, which have become widespread in practice:

• Preemption and preference clauses. These oblige a shareholder wishing to sell to first offer their shares to the other shareholders.

• Withdrawal or buyback clauses. These allow a shareholder to exit by forcing the others to repurchase their shares, often through redeemable shares or variable capital structures.

• Tag-along clauses. These allow minority shareholders to “tag along” and sell their shares under the same conditions as a major shareholder who is selling.

• Drag-along clauses. These force minority shareholders to sell their shares if majority shareholders find a purchaser.

• Advanced financial clauses. More sophisticated mechanisms may be inserted, such as ratchet clauses (to protect investors in case of down-rounds), equalization clauses, caps on participation, or non-aggression commitments.

Such creativity demonstrates how the SAS can be a highly customized vehicle for structuring ownership and control.

5. The Price of Shares: A Central Issue in Controlling Share Capital

Capital control is not only about who can buy or sell shares—it also involves how the price is determined.

5.1 Legal Framework

Article L. 227-18 of the Commercial Code provides three possible methods for setting the price of shares in the context of transfers:

1. Price fixed directly in the articles of association.

2. Price determined by mutual agreement between the parties.

3. Price fixed by an independent expert appointed under Article 1843-4 of the Civil Code.

5.2 Practical Methods

The articles may provide different valuation formulas, such as:

• Nominal value of the shares.

• Adjusted book value.

• A multiple of EBITDA.

• Minority discount or control premium.

Independent expert intervention is frequent, as it ensures objectivity and helps prevent disputes.

5.3 Protection of Certain Shareholders

The law also protects certain categories of transferors:

• Employees cannot be penalized financially in violation of labor law.

• Heirs of a deceased shareholder are protected under inheritance law.

Thus, valuation mechanisms must always comply with mandatory legal principles.

6. Sanctions for Breach of Statutory Clauses

6.1 Automatic Nullity (Article L. 227-15 C. com.)

Any transfer made in violation of statutory clauses governing transfers (inalienability, approval, exclusion) is automatically void, without needing to prove fraud or knowledge of the clause by the transferee.

This is a major difference compared to the SA, where only some clauses enjoy such protection.

Moreover, dominant case law extends this nullity to non-legal clauses (such as preemption or withdrawal) when they are inserted in the articles of association.

6.2 Legal Regime of Nullity

The Court of Cassation has clarified that the nullity is governed by company law, subject to a limitation period of three years, and not by common contract law (which would provide five years).

Only the beneficiaries of the clause (the company or the concerned shareholders) may invoke this nullity. The “exception of nullity” may always be raised before the act is executed.

7. Responsibilities and Precautions

7.1 Liability of the Transferor

A shareholder who transfers shares in violation of statutory clauses may incur civil liability. In certain cases, they may even be excluded from the company if a clause provides for exclusion in case of fault.

7.2 Liability of Company Officers

The president or directors are required to refuse to register irregular transfers in the share movement register. Failure to do so may expose them to liability.

7.3 Drafting and Securing Clauses

Clauses must be:

• Drafted clearly, without ambiguity.

• Compatible with other statutory provisions.

• In conformity with principles of contract law (clear object, non-illusory price, etc.).

Rigorous drafting is key to preventing future disputes.

8. Updating the Articles of Association to Ensure Efficient Capital Control

The rules governing adoption or modification of clauses have evolved:

• Inalienability and exclusion clauses in case of change of control still require unanimity.

• Other clauses may be adopted or modified by a simple statutory majority, since the reforms of 2017 and 2019.

However, removing clauses may also require unanimity, particularly if expressly provided in the statutes. Opportunistic removal of a clause (e.g., just before a share sale) may constitute an abuse of majority.

Conclusion: Anticipation and Legal Vigilance

Controlling the share capital of an SAS is about much more than restricting transfers. It is about anticipating the company’s evolution, structuring ownership in line with long-term objectives, and securing the corporate framework.

The great statutory freedom of the SAS makes it possible to fine-tune entry, exit, and participation of shareholders depending on strategic needs: whether protection of founders, preparation for investment rounds, or ensuring family succession.

But this freedom comes with responsibilities. Clauses must be coherent, legally valid, and rigorously respected in practice. The sanction of automatic nullity is a powerful tool, but it cannot replace careful drafting and day-to-day compliance.

Properly handled, capital control mechanisms turn the SAS into a robust and versatile vehicle, offering both flexibility and legal certainty.