1.  Member States shall ensure that competent authorities, all persons who work or who have worked for the competent authorities or entities to whom tasks are delegated pursuant to Article 67(2), as well as auditors and experts instructed by the competent authorities, are bound by the obligation of professional secrecy. They shall not divulge any confidential information which they may receive in the course of their duties, save in summary or aggregate form such that individual investment firms, market operators, regulated markets or any other person cannot be identified, without prejudice to requirements of national criminal or taxation law or the other provisions of this Directive or of Regulation (EU) No 600/2014.

2.  Where an investment firm, market operator or regulated market has been declared bankrupt or is being compulsorily wound up, confidential information which does not concern third parties may be divulged in civil or commercial proceedings if necessary for carrying out the proceeding.

3.  Without prejudice to requirements of national criminal or taxation law, the competent authorities, bodies or natural or legal persons other than competent authorities which receive confidential information pursuant to this Directive or to Regulation (EU) No 600/2014 may use it only in the performance of their duties and for the exercise of their functions, in the case of the competent authorities, within the scope of this Directive or of Regulation (EU) No 600/2014 or, in the case of other authorities, bodies or natural or legal persons, for the purpose for which such information was provided to them and/or in the context of administrative or judicial proceedings specifically relating to the exercise of those functions. However, where the competent authority or other authority, body or person communicating information consents thereto, the authority receiving the information may use it for other purposes.

4.  Any confidential information received, exchanged or transmitted pursuant to this Directive or to Regulation (EU) No 600/2014 shall be subject to the conditions of professional secrecy laid down in this Article. Nevertheless, this Article shall not prevent the competent authorities from exchanging or transmitting confidential information in accordance with this Directive or with Regulation (EU) No 600/2014 and with other Directives or Regulations applicable to investment firms, credit institutions, pension funds, UCITS, AIFs, insurance and reinsurance intermediaries, insurance undertakings, regulated markets or market operators, CCPs, CSDs, or otherwise with the consent of the competent authority or other authority or body or natural or legal person that communicated the information.

5.  This Article shall not prevent the competent authorities from exchanging or transmitting in accordance with national law, confidential information that has not been received from a competent authority of another Member State.