Article 40
Reporting requirements
The competent authorities of the host Member States may require that all credit institutions having branches within their territories shall report to them periodically on their activities in those host Member States.
Such reports shall only be required for information or statistical purposes, for the application of Article 51(1), or for supervisory purposes in accordance with this Chapter. They shall be subject to professional secrecy requirements at least equivalent to those referred to in Article 53(1).
The competent authorities of the host Member States may in particular require information from the credit institutions referred to in the first subparagraph in order to allow those competent authorities to assess whether a branch is significant in accordance with Article 51(1).