Trading in the Company's shares and other financial instruments managers with a duty to notify is prohibited during a period starting at the end of each reporting period and lasting until the results release has been published (always at minimum 30 days; "closed window"). This prohibition applies not only to managers with a duty to notify but also to such other persons specified by the Company who participate in the preparation of financial reports. 

In 2019, the closed window periods are:

​Closed windowFinancial report​​Publishing date
​1 Jan–7 Feb 2019The 2018 financial results​Thu 7 Feb 2019
​1 Apr– 26 April 2019Interim report January–March​Fri 26 April 2019
​1 July–1 Aug 2019Half-Year Financial Report January–June​Thu 1 Aug 2019
​1 Oct– 31 Oct 2019Interim report January–September​Thu 31 Oct 2019