Appendum announcement from SIIG regarding the scheduled maintenance of its JV projects (Saudi Chevron Phillips, Jubail Chevron Phillips company) and operation restart-up

With reference to SIIG announcement on 31 Jan. 2017, regarding for periodic scheduled maintenance and catalyst replacement of its two projects Saudi Chevron Phillips (SCP) and Jubail Chevron Phillips (JCP). SIIG announces that as of 22 Mar. 2018, the maintenance works were completed successfully, and all units are restarted up, the financial impact of this shutdown is expected to be reflected in the financial results for the first quarter of 2018