Becoming a partner in a Swiss company or transferring existing shares is not as simple as "handing over shares from hand to hand." Particularly in investment, partnership changes, intra-group restructurings, or exit processes, ensuring that share transfer is legally valid has critical consequences for dividends, voting rights, management control, and even commercial register records. In Swiss law, the process differs significantly depending on the company type: between AG (Aktiengesellschaft – stock corporation) and GmbH (Gesellschaft mit beschränkter Haftung – limited liability company), the freedom of transfer, approval mechanisms, and registration requirements are not the same.
In this article, within the framework of the Swiss Code of Obligations (CO), we address step by step how share transfers work in AG and GmbH, which documents are required, at what stages company bodies become involved, and the most common mistakes made in practice.
The fundamental logic of share transfer: "Contract" is separate from "ownership transfer"
The key to correctly understanding share transfer in Swiss practice is the two-layer structure of the transaction:
- Commitment transaction: The part where parties say "I'm selling–I'm buying" – the sale/agreement portion. This phase can usually be conducted orally or in writing; however, a written contract is strongly recommended for evidence and risk management purposes.
- Disposal transaction: The legally formalized portion that actually transfers the ownership of shares. Here, the critical document is the written declaration of assignment (Abtretungserklärung).
Even if the parties have paid the purchase price, without a formally correct assignment declaration, the buyer will not legally become a shareholder. In this case, the buyer cannot exercise shareholder rights such as dividends, voting rights, or liquidation shares, and may encounter problems with registration in the share register (AG) or commercial register (GmbH).
Declaration of Assignment (Abtretungserklärung): Why is formal requirement so critical?
In Switzerland, particularly in private companies, written declaration of assignment forms the backbone of share transfer. Notarization is not ordinarily required; however, the document must be drafted with meticulous attention to form.
What must be included in a valid assignment declaration
- Written form: A signed written document with wet signature or a document signed with Qualified Electronic Signature (QES) on PDF.
- Clear identification of shares and company: It must be evident which company's shares are being transferred (number of shares/nominal value and share class, if any).
- Intent to transfer: The seller's (assignor's) intent to "assign" must be clearly expressed.
- Party information and date: Identifying information such as name and address, and the date, play a critical role in identification and chronology.
An important distinction in practice: In the assignment declaration, in most scenarios the buyer's signature is not mandatory; the seller's signature and formal compliance are determinative. Nevertheless, for transaction security, buyer's signature and a comprehensive share purchase agreement are usually preferred.
How is share transfer carried out in AG (Stock Corporation)?
AG structure is ordinarily built on the logic of more freely transferable shares. However, this freedom is not "under all circumstances"; the articles of association (Articles of Association – AoA) and share type affect the process.
1) Check the share type and restrictions (registered vs. bearer)
In private (non-public) AGs, registered shares are common. With registered shares, management of the shareholder relationship is expected to occur through company records. The articles of association, particularly for registered shares in non-public companies, may grant the board of directors approval authority.
2) Complete the transfer formally
- If a share certificate has been issued, in practice the transfer is structured via endorsement (ciro) and/or written declaration of assignment.
- If no share certificate has been issued, the transfer generally operates on the basis of assignment of rights: a written declaration of assignment is prepared and delivered to the buyer.
3) Board approval and entry in the share register
For registered shares, entry in the share register is a practically critical step for the buyer to be recognized by the company as a shareholder. As emphasized in research data, although this registration is often not constitutive in most cases, it is factually determinative for the exercise of management rights and internal company transactions.
Can a share transfer be refused in an AG?
The articles of association may allow the board of directors to withhold approval for the transfer of registered shares in non-public companies. In such structures, the company or third parties may use a model to prevent transfer by proposing acquisition at "fair value."
Exceptions: Approval is not required in all cases
In certain legal transition situations (e.g., inheritance, estate distribution, division of marital property, or compulsory enforcement scenarios), approval requirements may differ.
How is share transfer carried out in GmbH (Limited Liability Company)?
GmbH, by its ownership structure, offers a more "closed" regime. For this reason, share transfer is subject to greater control compared to AG. According to the framework in research data, two elements stand out: members' meeting approval and commercial register (commercial register) update.
1) Obligation of written assignment agreement/declaration
In GmbH share transfer, a written assignment agreement (CO Art. 785 approach) is a fundamental requirement in practice. Here, not only the purchase agreement but also written documentation serving to legally complete the transfer are important.
2) Members' meeting approval: The critical threshold
In a GmbH, share transfer ordinarily requires general meeting/members' meeting approval (CO Art. 786 approach). The key point to note is: approval can be refused without cause. This characteristic makes the GmbH advantageous for investors wishing to preserve the partnership structure, while increasing process risk for shareholders seeking to exit.
The articles of association or shareholders' agreement may alleviate or aggravate this regime. For example:
- Pre-emption or company buyback obligation
- Prohibition of transfer unless certain conditions are met
- Conditioning on requirements such as performance targets or non-compete commitments
3) Commercial register update (mandatory)
Following a GmbH transfer, the commercial register entry must be updated. This step should not be viewed merely as "notification"; in Switzerland, it holds a fundamental role in the process for transparency and enforceability against third parties.
Step-by-step practical process: Shared checklist for AG and GmbH
Although company types differ, a well-managed share transfer project follows a similar methodology:
- Agreement on commercial terms: Price, payment schedule, closing conditions, representations and warranties are clarified. In private companies, a comprehensive Share Purchase Agreement (SPA) often reduces dispute risk.
- Analysis of internal company restrictions: Approval, pre-emption, drag-along/tag-along and similar provisions in the articles of association (AoA) and any shareholders' agreement are reviewed.
- Obtaining approvals: Board approval and share register procedures in AG; members' meeting decision and register steps in GmbH are planned.
- Formally compliant transfer documentation: Written declaration of assignment/assignment agreement is prepared; if QES is to be used, signature compatibility is ensured.
- Updating records: Share register entry in AG; commercial register update in GmbH is completed.
Risks of non-compliance and incorrect structuring: The "I thought I was a shareholder" scenario
The most costly mistakes in share transfer typically arise from neglecting form and registration steps under the assumption that "the commercial part is done." As emphasized in research data, in formally defective transfer, the buyer cannot acquire ownership; consequently:
- Dividends and voting rights cannot be exercised; disputes over authority arise in the general meeting.
- Share register entry or register transactions become stalled.
- General meeting resolutions become contested; in some cases, resolutions may be subject to challenge within certain periods.
Do foreign buyers face additional obstacles in share transfer?
According to the framework in research data, Swiss company law contains no general share transfer prohibition against foreign buyers. Nevertheless, sector-specific regulations, banking relationships, KYC/compliance controls, and the company's internal agreements (AoA / shareholders' agreement) may factually create additional documentation and time requirements.
2025 critical note: Restrictions on "shell company" share transfers
Switzerland, to prevent abuses, introduced restrictions on "shell company" (inactive/dormant company) share transfers as of 1 January 2025 under anti-abusive bankruptcy fighting regulations coming into effect. This change demonstrates that the structure of "acquiring an existing company and using it quickly" is not always risk-free.
For this reason, if a company purchase or share transfer is being planned in Switzerland, the target company's active operation status, organizational reality, and legal compliance should be examined separately. For information on the scope of the subject and official summary information regarding current practice, reference may be made to guidance content on kmu.admin.ch.
Cost and tax dimension: Why planning from the start is necessary
The cost of share transfer is not only "company valuation and price." In practice, cost items expand to include legal documentation, company body resolutions, register procedures, due diligence, and compliance controls. In incorrect structuring, cost directly transforms into dispute and transaction reversal risk.
The tax dimension varies depending on the structure of the transfer: who is transferring the shares (individual/company), whether it is intra-group or to a third party, closing conditions in the contract, and how payment is structured (installments, earn-out, etc.) determine the total impact. For this reason, share transfer should not be considered independently of the company's international structure planning.
Corpenza perspective: Share transfer is often part of a larger "international structure" decision
Although share transfer in Switzerland appears to be a standalone "legal transaction," in practice it frequently comes with the following objectives: market entry, intra-group restructuring, incorporating in Switzerland, establishing operations in Europe, residency/corporate establishment planning, payroll and employment structuring.
At this point, Corpenza, as a business development and mobility partner capable of addressing processes end-to-end, supports you in evaluating company formation in Switzerland and Europe, international accounting and payroll/EOR, and global mobility within the same picture as critical corporate change points such as share transfer. Proper structure planning ensures that share transfer is not only "valid" but also operationally sustainable.
Conclusion: "Freedom" prevails in AG, "control" in GmbH
To summarize:
- AG: Shares are in most cases more freely transferable; nevertheless, articles of association and share type affect board approval and share register practice.
- GmbH: Transfer is more controlled; members' meeting approval and commercial register update play a central role.
- In both structures, without formally compliant written assignment/transfer documentation, the buyer cannot safely exercise shareholder rights.
To close the transaction safely, legal form requirements, intra-company approval mechanisms, and registration steps must be planned from the start, just as much as the commercial portion of the contract.
Disclaimer
This content is for general informational purposes; it does not constitute legal, tax, or financial advice. Legislation and practices may change over time; results may differ depending on the transaction type and the company's articles of association/shareholders' agreement. Before making decisions, we recommend reviewing current official sources and obtaining professional support from qualified Swiss legal and tax specialists.
