A foreign person must give the Treasurer a notice before taking a notifiable action or notifiable national security action or, if section   18A (increasing percentage of interests without acquiring additional interests in securities) applies, before the end of 30 days after the action is taken.

A foreign person must not take an action during a certain period (unless the person is given a no objection notification or section   18A applies) if:

  (a)   the foreign person chooses to notify the Treasurer of the action despite not being required to do so; or

  (b)   the foreign person is given a notice by the Treasurer under subsection   66A(4) (actions that may pose a national security concern).

Generally, the period is 40 days from receiving the notice, or up to 90 days from the registration of an interim order. The person may be prevented from taking the action by an order under Part   3.