No dealings of any kind in the securities of the offeree company (including convertible securities, warrants, options and derivatives in respect of such securities) may be transacted by any person, not being the offeror, who is engaged in the offer and who has confidential price-sensitive information concerning an actual or contemplated offer or revised offer between the time when there is reason to suppose that an approach or an offer or revised offer is contemplated and the announcement of the approach, the offer, the revised offer, or of the termination of the discussions where an announcement of the offer has been made public.