1. Member States shall ensure that the group supervisor and the competent authorities referred to in Article 48(5) shall provide each other with all relevant information as required, including the following:
(a) identification of the investment firm group's legal and governance structure, including its organisational structure, covering all regulated and non-regulated entities, non-regulated subsidiaries and the parent undertakings, and of the competent authorities of the regulated entities in the investment firm group;
(b) procedures for the collection of information from the investment firms in an investment firm group, and the procedures for the verification of that information;
(c) any adverse developments in investment firms or in other entities of an investment firm group, which could seriously affect those investment firms;
(d) any significant sanctions and exceptional measures taken by competent authorities in accordance with national provisions transposing this Directive;
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