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On August 3, 2026, the Commission de Surveillance du Secteur Financier (CSSF) launched a dedicated webpage to clarify the notification and assessment process for material operations conducted by credit institutions and financial holding companies. The webpage follows the publication of the Law of May 5, 2026, which amended the Law of April 5, 1993 (LFS) and transposed Directive (EU) 2024/1619 (CRD VI). The new law introduces mandatory requirements for institutions to notify the CSSF prior to executing material operations and to obtain CSSF approval for operations likely to significantly impact the institution's prudential position or raise concerns regarding money laundering or terrorist financing. The CSSF's new webpage provides practical guidance on implementing the notification requirements and outlines the assessment criteria for three categories of material operations: acquisitions and divestitures of a material interest; material transfers of assets and liabilities; and mergers and divisions. The guidance is designed to assist market participants in understanding and complying with these new obligations. The webpage details the regulatory framework applicable to material operations and clarifies the process institutions must follow when planning such activities. This resource enables credit institutions and mixed financial holding companies to better navigate the notification requirements and understand how the CSSF will evaluate whether operations meet the threshold for significant prudential impact or present money laundering and terrorist financing concerns. The guidance is relevant for all credit institutions and financial holding companies operating in Luxembourg that undertake material operations.