Subsection (6) of section 108, in its application to dealings by a company in its own securities, shall not preclude a company from dealing in its own shares at any time by reason only of information in the possession of an officer of that company if -
(a) the decision to enter into the transaction was taken on its behalf by a person other than the officer, and
(b) the information was not communicated to that person and no advice relating to the transaction was given to him by a person in possession of the information.