Article 28b shall apply at least to the following breaches:

(a) failure by the issuer to make public, within the required time limit, information required under the national provisions adopted in transposition of Articles 4, 5, 6, 14 and 16;

(b) failure by the natural or the legal person to notify, within the required time limit, the acquisition or disposal of a major holding in accordance with the national provisions adopted in transposition of Articles 9, 10, 12, 13 and 13a.