After a reorganisation — merger, demerger, conversion or cross-border transformation — the entity on record at the Registre de Commerce et des Sociétés may differ materially from the entity a counterparty last verified. Control shifts when the shareholder register changes, not when the board resolves to change it.
The angle here is control: who holds the shares after the reorganisation, who sits on the board, and what the shareholder can enforce against the restructured entity. The RCS is the authoritative source for those questions. This page states what the register contains, what it withholds, and where the chain of evidence breaks.
A Luxembourg reorganisation must be notarised and filed with the RCS. The filed documents include the deed of reorganisation, the updated articles of association and, for SARLs, the updated shareholders' list (liste des associés). For SAs and SEs, the share register is held by the company itself, not deposited at the RCS.
The RCS entry after a successful filing shows:
The filing creates a public record of the structural change. It does not, by itself, confirm that all pre-reorganisation obligations transferred to the successor entity. That question belongs to the notarial deed and the applicable law — not to the register.
Source: Registre de Commerce et des Sociétés (RCS Luxembourg) · verified 2026-09-15
For a SARL, the shareholders' list filed at the RCS is the definitive record of who holds shares and in what proportion. A transfer of shares that has not been filed is not opposable to third parties. After a reorganisation, the filed list is the starting point for any enforcement analysis.
For an SA, the share register is maintained by the company. The RCS records the total issued capital and the identity of directors, but not individual shareholders. Establishing control in an SA after a reorganisation requires access to the company's own share register — a step that goes beyond what the RCS provides.
Board composition is recorded at the RCS for both forms. A director appointed as part of a reorganisation must be filed. Until the filing appears, the pre-reorganisation board remains the record board.
Shareholder rights — voting thresholds, veto rights, drag-along and tag-along provisions — are set out in the articles of association. The current articles are filed at the RCS and are publicly accessible. What the articles do not contain, and what the RCS does not hold, are any shareholders' agreements concluded outside the articles.
Source: Registre de Commerce et des Sociétés (RCS Luxembourg) · verified 2026-09-15
Luxembourg maintains a separate Registre des bénéficiaires effectifs (RBE) under the law of 13 January 2019. Following the CJEU judgment in C-37/20 (November 2022), public access to the RBE was suspended. Access is now restricted to competent authorities, obliged entities under AML legislation, and persons who can demonstrate a legitimate interest.
The RBE is therefore not a source that an international buyer can consult freely. The RCS shows the direct shareholder layer. If that layer is a holding company — Luxembourg or foreign — the chain of control above it is not visible from the RCS alone.
This is not a gap in the filing; it is the current legal architecture. The report states where the chain is established and where it stops.
Source: Registre des bénéficiaires effectifs (RBE) · verified 2026-09-15
Luxembourg is a frequent destination and departure point for cross-border mergers and conversions under the EU Mobility Directive (Directive 2019/2121). A cross-border transformation filed at the RCS will show the Luxembourg side of the transaction: the resulting entity, its form, its capital and its directors.
The foreign side — the absorbed entity, the transferring company, or the pre-conversion form — is on record in the relevant foreign register. Establishing the full picture of a cross-border reorganisation requires pulling both sides.
The RCS filing references the foreign element. It does not reproduce the foreign register entry. Verification of the foreign side is a separate step, governed by the rules of the other jurisdiction.
Source: Registre de Commerce et des Sociétés (RCS Luxembourg) · verified 2026-09-15
Luxembourg law requires that amendments arising from a reorganisation be filed within one month of the notarial act. During that window, the RCS reflects the pre-reorganisation state. A search conducted in that window returns the old structure.
The notarial deed is dated. The RCS filing is dated. The gap between the two is visible in the record once the filing is complete. Before the filing is complete, the gap is not visible — the register simply shows the old state.
An extract pulled on the day of the search is accurate as of that day. It is not a guarantee that no filing is pending. This is a structural feature of any register that operates on a filing model, not a deficiency specific to Luxembourg.
Source: Registre de Commerce et des Sociétés (RCS Luxembourg) · verified 2026-09-15
The RCS shows the direct shareholder layer for SARLs and the board for all forms. It does not show:
The chain of control is established to the level the sources permit. The report names the level at which the chain stops and states the reason.
For an SA structure, the report establishes board composition, registered capital and the filed reorganisation deed. Shareholder identity at the SA level requires a step beyond the RCS — access to the company's own share register — which is not a public document.
For a SARL structure, the shareholders' list is on record. If a shareholder in that list is itself a holding entity, the layer above it is subject to the RBE access restriction.
The ceiling is stated before payment. No report in this series promises to establish what the sources do not contain.
| Tier | Price | What is included | Not included |
|---|---|---|---|
| Signal | €890 | RCS extract (current state): legal form, registered capital, directors, shareholders (SARL), filed reorganisation deed reference; filing date and lag analysis | SA shareholder register; RBE layer; foreign-side verification for cross-border reorganisations; shareholders' agreements |
| Standard | €1,900 | Signal content plus: full articles of association as filed post-reorganisation; analysis of voting and control thresholds in the articles; board appointment timeline across the reorganisation; identification of any cross-border element and the foreign register reference | SA shareholder register; RBE layer; foreign-side document retrieval; legal qualification of shareholder rights |
| Extended | €4,200 | Standard content plus: foreign-side register extract for cross-border reorganisations (one jurisdiction); structured control map showing the direct shareholder layer and the point at which the chain stops; written statement of the limit of the sources at each layer; coordination with RBE access request where legitimate interest can be demonstrated | Legal advice; enforcement strategy; shareholders' agreements not filed at the RCS; layers above the direct shareholder where RBE access is denied |
What does the RCS show for a Luxembourg SA after a reorganisation? The RCS records the board of directors, registered capital, registered office and the filed reorganisation deed. It does not hold the SA's share register. Shareholder identity for an SA is not a public record at the RCS.
How long after a reorganisation does it take for the new structure to appear in the RCS? Luxembourg law sets a one-month filing deadline from the date of the notarial act. Processing time at the registrar adds further days. The extract reflects the state at the moment of retrieval; it does not confirm the absence of a pending filing.
Is the Luxembourg beneficial ownership register publicly accessible? No. Following the CJEU judgment in C-37/20 (November 2022), public access to the RBE was suspended. Access is available to competent authorities, AML-obliged entities and persons demonstrating a legitimate interest. A general commercial search does not qualify automatically.
What is the difference between the shareholders' list and a shareholders' agreement? The shareholders' list (liste des associés) for a SARL is filed at the RCS and is public. A shareholders' agreement is a private contract between shareholders. It is not filed at the RCS and is not accessible through any public register.
Can a cross-border reorganisation be verified entirely from the Luxembourg side? No. The RCS records the Luxembourg entity resulting from the reorganisation. The absorbed or transferring entity is on record in the foreign register. Full verification requires both sides.
What does the Signal tier establish that a direct RCS search does not? The Signal tier adds the filing lag analysis — the gap between the notarial deed date and the RCS filing date — and a structured reading of the reorganisation deed reference in context. A direct RCS search returns the current extract; it does not flag the window of uncertainty or interpret the reorganisation reference.
Sources: - Registre de Commerce et des Sociétés (RCS Luxembourg) — https://www.lbr.lu — verified 2026-09-15 - Registre des bénéficiaires effectifs (RBE) — https://www.lbr.lu/mjrcs-rbe — verified 2026-09-15 - CJEU judgment C-37/20, WM and Sovim SA v Luxembourg Business Registers, 22 November 2022 — verified 2026-09-15 - Directive (EU) 2019/2121 on cross-border conversions, mergers and divisions — verified 2026-09-15 - Luxembourg Law of 13 January 2019 establishing the RBE — verified 2026-09-15
Disclaimer: This report is a factual compilation from official registers and public sources. It is provided for informational purposes only, does not constitute legal advice, and contains no legal qualification of the facts established. VLO Law Firm assumes no liability for actions taken or not taken based on this material. For advice regarding your particular situation, please contact info@vlolawfirm.com.
Author: Elena Moretti — Partner, Continental Europe, VLO Law Firm