1. Listing particulars must be published within a reasonable period, to be laid down in national legislation or by the competent authorities before the date on which official listing becomes effective.
Moreover, where the admission of securities to official listing is preceded by trading of the pre-emptive subscription rights giving rise to dealings recorded in the official list, the listing particulars must be published within a reasonable period, to be laid down by the competent authorities before such trading starts.
2. In exceptional, properly justified cases, the competent authorities may allow the postponement of the publication of the listing particulars until after:
(a) the date on which official listing becomes effective, in the case of securities of a class already listed on the same stock exchange issued in consideration of transfers of assets other than cash,
(b) the date of the opening of trading in pre-emptive subscription rights.
3. If the admission of debt securiti