Electronic Compliance Object · Luxembourg
What an agent must know before it acts on a security listed in Luxembourg: who regulates, where the filings are stored, what is due when, and which state the issuer is in.
| Field | Value | Source |
|---|---|---|
| Regulator | Commission de Surveillance du Secteur Financier (CSSF) www.cssf.lu/en | www.cssf.lu/en |
| Exchange(s) and listings page | Bourse de Luxembourg - 'the primary, European Union (EU)-regulated market of LuxSE' (Luxembourg Stock Exchange) — www.luxse.com/market-overview/official-list Euro MTF - 'an alternative market operated by LuxSE', described as 'Europe's first exchange-regulated multilateral trading facility' (MTF, not an EU-regulated market) — www.luxse.com/market-overview/official-list LuxSE SOL (Securities Official List) - listing without admission to trading — www.luxse.com/market-overview/official-list | www.luxse.com/listing/our-markets-and-platforms www.luxse.com/market-overview |
| Regulated-information store | LuxSE Officially Appointed Mechanism (OAM) - 'a regulated information access point'; 'Documents stored via our OAM are centrally archived and publicly available via our website.' CSSF: regulated information must be stored on the OAM when disseminated and no later than the end of that same day; the OAM is operated by the Luxembourg Stock Exchange. Transparency Law art. 20(2): OAM(s) 'shall be appointed by way of Grand-ducal regulation'. www.luxse.com/issuer-services-overview/oam | www.luxse.com/issuer-services-overview/oam www.cssf.lu/en/information-requirements-issuers-of-securities www.cssf.lu/wp-content/uploads/L_110108_transparency.pdf |
| Periodic disclosure obligations and deadlines | Annual financial report (Transparency Law art. 3(1)) — deadline: at the latest four months after the end of each financial year Half-yearly financial report (Transparency Law art. 4(1)) — deadline: as soon as possible after the end of the relevant period, but at the latest three months thereafter | www.cssf.lu/wp-content/uploads/L_110108_transparency.pdf www.cssf.lu/en/information-requirements-issuers-of-securities |
| Ad hoc / inside-information regime | CSSF: issuers subject to the Transparency Law must disclose inside information (MAR art. 17) and managers' transactions (MAR art. 19) as regulated information - filed with the CSSF, stored on the OAM and disseminated under the Transparency Law; filings via eRIIS since 30 May 2022 | www.cssf.lu/en/information-requirements-issuers-of-securities |
| Filing format | CSSF: annual financial reports prepared in 'Extensible Hypertext Markup Language (XHTML) format' for financial years starting on or after 1 January 2020; IFRS consolidated statements also tagged in XBRL (ESEF; CSSF points to ESMA's ESEF Reporting Manual) | www.cssf.lu/en/information-requirements-issuers-of-securities |
| ISIN prefix | LU (ANNA row shows prefix 'XS / LU') - national numbering agency Clearstream Banking S.A., ANNA status Member anna-web.org/anna-members | anna-web.org/anna-members |
| LEI | GLEIF API: no LEI issuer (LOU) based in Luxembourg is on GLEIF's list of 41 LOUs; 22 LOUs are accredited for jurisdiction LU (incl. London Stock Exchange, KDPW, Bundesanzeiger Verlag, Nasdaq LEI, WM Datenservice, GS1, EQS, RapidLEI, Bloomberg, NordLEI, Euronext Dublin, KVK, InfoCamere, GMEI Utility); 42,494 LEIs with legal jurisdiction LU and status ISSUED on 2026-10-24 api.gleif.org/api/v1/lei-issuers | api.gleif.org/api/v1/lei-issuers api.gleif.org/api/v1/lei-issuers/{id}/jurisdictions api.gleif.org/api/v1/lei-records?filter[entity.jurisdiction]=LU&filter[registration.status]=ISSUED |
| Market calendar | LuxSE markets 'open from 09:00 to 17:40 (CET) from Monday to Friday, excluding some public holidays'; Closing days 2026 listed: Friday 25 December (Christmas Day); not closed on Tuesday 23 June (National day); on Thursday 24 and Thursday 31 December 2026 'the trading sessions will close at 14h05 CET' www.luxse.com/trading/opening-hours-and-closing-days | www.luxse.com/trading/opening-hours-and-closing-days |
| Filing language(s) | Transparency Law art. 19: regulated information disclosed 'in a language accepted by the CSSF' (and/or, per case, a language accepted by host Member State authorities or 'a language customary in the sphere of international finance, recognised as such by the CSSF'); art. 19(5): 'the languages accepted in any case by the CSSF are Luxembourgish, French, German and English.' | www.cssf.lu/wp-content/uploads/L_110108_transparency.pdf |
| Trading halts page | LuxSE Market overview page - 'Latest Suspensions' tab (also 'Upcoming delistings') www.luxse.com/market-overview | www.luxse.com/market-overview |
| Store lookup | LuxSE OAM search - 'Search for regulated information'; keyword box plus advanced filters: country of issuer, issuer name, publication date, reference year, ISIN code, CSSF code, type of regulated information www.luxse.com/issuer-services-overview/oam/oam-search | www.luxse.com/issuer-services-overview/oam/oam-search |
| Node status and door | NODE LIVE · as_of 2026-10-23 · 23 issuers · door https://mcp.lu-cm-kg.ai/mcp mcp.lu-cm-kg.ai/mcp | mcp.capitalmarketsknowledgegraph.ai/mcp (list_nodes, at render) |
| Signal | State | When |
|---|---|---|
| ACM-200 | TRADING | The ISIN is on this market's register (the node's current roster for the exchange list). |
| ACM-403 | HALTED | Trading in the line is suspended or halted by the exchange or regulator. The node's record carries the halt flag, read nightly from the market's halts page named in the fields. www.luxse.com/market-overview |
| ACM-404 | NOT ON THE REGISTER | The ISIN is not on this market's register (not listed here, delisted, or never admitted). |
| ACM-451 | READ THE FILING | A regulatory filing for the issuer is dated in the last three days: read it before acting. The answer names it. |