Article 4 1. Spain shall recover the incompatible aid corresponding to the tax reduction under the scheme referred to in Article 1(1) from the beneficiaries whose rights in foreign companies, acquired in the context of extra-EU acquisitions, do not fulfil the conditions laid down in Article 1(2) to (5).
2. The sums to be recovered shall bear interest from the date on which the tax base of the beneficiaries was reduced until the date of recovery.
3. The interest shall be calculated on a compound basis in accordance with Chapter V of Regulation (EC) No 794/2004.
4. Spain shall cancel any outstanding tax reduction provided under the scheme referred to in Article 1(1) with effect from the date of adoption of this Decision, except for the reduction attached to rights in foreign companies fulfilling the conditions laid down in Article 1(2).