Article L228-17 of the French Commercial code
In the event of a merger or demerger, the preference shares may be exchanged for shares of the companies benefiting from the transfer of assets and liabilities with equivalent special rights, or according to a specific exchange parity taking into account the special rights relinquished. In the absence of an exchange for shares conferring equivalent special rights, the merger or demerger is subject to approval by the special meeting provided…