1- ARE DIRECTORS AND SHAREHOLDERS OF A LIMITED COMPANY RESPONSIBLE FOR UNPAID SSI PREMIUM DEBTS?
Directors in Limited Companies are jointly and severally responsible for all debts originating during their term of office with their business legal entity.

On the other hand, Shareholders in Limited Companies are responsible for debts, which cannot be completely or partially collected from assets of legal entities or will not be able collected, at the ratio of their shares.

2- WHAT IS THE RESPONSIBILITIES OF TRANSFEREE/TRANSFEROR IN CASE OF SHARE TRANSFER IN A LIMITED COMPANY?
In case of share transfer in a Limited Company,
the transferee and the transferor are responsible for paying overdue premiums and other debts belonging to the period before transfer at the ratio of their shares.

Source: SSI