Article 13
1. Where applications are to be made simultaneously or within short intervals of one another for admission of the same securities to official listing on stock exchanges situated or operating in more than one Member State, or where an application for admission is made in respect of a security already listed on a stock exchange in another Member State, the competent authorities shall communicate with each other and make such arrangements as may be necessary to expedite the procedure and simplify as far as possible the formalities and any additional conditions required for admission of the security concerned. 2. In order to facilitate the work of the competent authorities, any application for the admission of a security to official listing on a stock exchange situated or operating in a Member State must state whether a similar application is being or has been made in another Member State, or will be made in the near future.