Article 13
1. The notification requirements laid down in Article 9 shall also apply to a natural person or legal entity who holds, directly or indirectly, financial instruments that result in an entitlement to acquire, on such holder's own initiative alone, under a formal agreement, shares to which voting rights are attached, already issued, of an issuer whose shares are admitted to trading on a regulated market. 2. The Commission shall, in accordance with the procedure referred to in Article 27(2), adopt implementing measures in order to take account of technical developments in financial markets and to ensure the uniform application of paragraph 1. It shall in particular determine: (a) the types of financial instruments referred to in paragraph 1 and their aggregation; (b) the nature of the formal agreement referred to in paragraph 1; (c) the contents of the notification to be made, establishing a standard form to be used throughout the Community for that purpose; (d) the notification period; (e) to whom the notification is to be made.