Article 35a 4.

Where either the Authority or the European Central Bank as referred to in Article 4, point (2)(i), exchanges information pursuant to paragraph 1 of this Article, it shall, without undue delay, inform each authority from which it obtained the information or each financial institution, if the information was obtained from financial institutions directly, about the exchange. In the case of recurring or periodic exchanges of information, the Authority or the European Central Bank as referred to in Article 4, point (2)(i), shall be obliged to inform the financial institution or the authority from which it obtained the information only once.