11. Any commissioner other than the chairman having a direct or indirect interest in an undertaking that places his personal interest in conflict with that of the board must, under pain of forfeiture of office, disclose it in writing to the chairman and abstain from taking part in any discussion or decision relating to the undertaking in which he has an interest.
A commissioner other than the chairman may, however, be a minor shareholder in an undertaking contemplated in the first paragraph, if it is a corporation whose shares are listed stocks.