1. Member States shall require any natural or legal person or such persons acting in concert (the "proposed acquirer"), who have taken a decision either to acquire, directly or indirectly, a qualifying holding in a credit institution or to further increase, directly or indirectly, such a qualifying holding in a credit institution as a result of which the proportion of the voting rights or of the capital held would reach or exceed 20 %, 30 % or 50 % or so that the credit institution would become its subsidiary (the "proposed acquisition"), to notify the competent authorities of the credit institution in which they are seeking to acquire or increase a qualifying holding in writing in advance of the acquisition, indicating the size of the intended holding and the relevant information, as specified in accordance with Article 23(4). Member States shall not be required to apply the 30 % threshold where, in accordance with Article 9(3)(a) of Directive 2004/109/EC, they apply a threshold of one-third.

2.Competent authorities shall acknowledge, in writing, the receipt of notification under paragraph 1 or of further information under paragraph 3 promptly and in any event within 10 working days following receipt of the notification or of the information.