Where a takeover offer is made for the securities of an issuer, upon the announcement by the offeror that acceptances have been received that bring the holdings owned by it and parties acting in concert with it to above 90% of the total number of issued shares excluding treasury shares, the Exchange may suspend the trading of such securities in the Ready and Unit Share markets until it is satisfied that at least 10% of the total number of issued shares excluding treasury shares are held by at least 500 shareholders who are members of the public.