Without prejudice to the sectoral rules, where Article 5(3) applies, the competent authorities shall verify whether the regulated entities, the parent undertaking of which has its head office in a third country are subject to supervision by that third country's competent authority, which is equivalent to that provided for by this Directive on the supplementary supervision of regulated entities referred to in Article 5(2). The verification shall be carried out by the competent authority which would be the coordinator if the criteria set out in Article 10(2) were to apply, on the request of the parent undertaking or of any of the regulated entities authorised in the Union or on its own initiative.

That competent authority shall consult the other relevant competent authorities, and shall make every effort to comply with any applicable guidelines prepared through the Joint Committee in accordance with Articles 16 and 56 of Regulation (EU) No 1093/2010, of Regulation (EU) No 1094/2010 and of Regulation (EU) No 1095/2010 respectively.

Where a competent authority disagrees with the decision taken by another relevant competent authority under paragraph 1, Article 19 of Regulation (EU) No 1093/2010, of Regulation (EU) No 1094/2010 and of Regulation (EU) No 1095/2010 respectively shall apply.

In the absence of equivalent supervision referred to in paragraph 1, Member States shall apply to the regulated entities, by analogy, the provisions concerning the supplementary supervision of regulated entities referred to in Article 5(2). As an alternative, competent authorities may apply one of the methods set out in paragraph 3.

Competent authorities may apply other methods which ensure appropriate supplementary supervision of the regulated entities in a financial conglomerate. Those methods shall be agreed by the coordinator, after consulting the other relevant competent authorities. The competent authorities may in particular require the establishment of a mixed financial holding company which has its head office in the Union, and apply this Directive to the regulated entities in the financial conglomerate headed by that holding company. The competent authorities shall ensure that those methods achieve the objective of supplementary supervision under this Directive and shall notify the other competent authorities involved and the Commission thereof.