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As part of its mission to supervise securities markets, the CSSF is responsible for the control of financial information published by issuers of securities listed on a regulated market. This activity, generally referred to as enforcement, aims to ensure compliance of financial information with the applicable reporting framework.
The controls carried out by the CSSF mainly concern the periodic financial reports of issuers (annual and half-yearly financial statements) with regard to their compliance with IFRS, GAAP equivalent to IFRS, Lux GAAP or other European GAAP.
The CSSF also monitors issuers’ compliance with the principles of the ESMA’s Guidelines on Alternative Performance Measures when using performance measures outside the financial statements (e.g., in management reports, some press releases or prospectuses).
Another mission of the CSSF in relation to the enforcement of Issuer Disclosure covers the control of sustainability reporting published by issuers.
This concerns the monitoring of compliance with the reporting requirements set out in the Non-Financial Reporting Directive (Directive 2014/95/EU of 22 October 2014, as transposed by the Law of 23 July 2016) and by article 8 of the Taxonomy Regulation (Regulation (EU) 2020/852 of 18 June 2020) for large issuers.
The CSSF fulfils its enforcement diligences in accordance with the Transparency Law conferring upon the CSSF the power to control periodic information published by issuers of securities governed by said law. Enforcement is a control ex post of the reports published by issuers.
The powers and penalties available to the CSSF as regards enforcement are set out in Articles 22, 25 and 26 of the Transparency Law.
Beyond the legal and regulatory requirements, the examination of issuers’ financial information and sustainability reporting contributes to the investors’ protection and confidence in the financial markets.
The enforcement process set up by the CSSF is compliant with ESMA guidelines and specifies the implemented selection methods and examination types as well as the characteristics of the decisions available to the CSSF.
The enforcement process begins with the selection of the issuers which will be examined in the context of enforcement. The selection model applied is based on a mixed model whereby a risk-based approach is combined with a sampling and rotation approach. The risk-based approach adopted by the CSSF considers the risk of misstatements and the possible impact of such a misstatement on the financial markets.
In the context of its examination process, the CSSF identifies the most efficient way to enforce Issuer Disclosure. The examination programme, defined every year for the selected issuers, includes:
These examinations usually include direct and repeated contacts (meetings, exchange of mails and conference calls) with representatives of the issuer and/or its external auditor in order to analyse the most sensitive problems and issues and obtain information, documents and other objective evidence required to perform the examination. Some examinations may also lead to on-site inspections of the concerned issuers.
Following the examinations described above, the CSSF may conclude that a specific accounting treatment does not comply with the relevant financial reporting framework. The CSSF must then determine whether the misstatement is a material or immaterial departure from the financial reporting framework and if any relevant enforcement decisions should be taken accordingly. In case of a material misstatement, the CSSF may take one of the following measures, as laid down in Article 22 of the Transparency Law:
The CSSF notifies its decisions to the issuer appropriately, namely in the form of injunctions, recommendations and follow-up measures of the corrections or improvements of financial information proposed by the issuer itself.
11 January 2008 - Updated on 10 July 2025
on transparency requirements for issuers
22 December 2023
supplementing Directive 2013/34/EU of the European Parliament and of the Council as regards sustainability reporting standards
19 July 2002
on the application of international accounting standards
22 June 2016
Update of Circular CSSF 08/337 on the entry into force of the Law of 11 January 2008 and of Grand-ducal Regulation of 11 January 2008 on transparency requirements for issuers, as amended
8 October 2024
ESMA 32-483087481-68
5 July 2024
ESMA32-992851010-1600
25 October 2023
in 2022 annual financial reports ESMA32-1283113657-1041
9 October 2023
ESMA32-193237008-3341
19 December 2022
Published by the European Commission on 19 December 2022
28 October 2014 - Updated on 1 September 2021
ESMA32-50-218
20 May 2020
ESMA32-63-972
17 April 2020
Link to the ESMA Q&A Tool
24 October 2024
ESMA32-193237008-8369
25 October 2023
ESMA32-193237008-1793
28 October 2020
ESMA32-63-791
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