Investors' basic information

In accordance with the provisions of the Base Prospectus dated September 7th, 2017 (Official Registration Number 10813), the following documentation is available:

• Law 34/1998, of 7 October, on the Hydrocarbon Sector. (BOE 241 of 8/10/1998) 
• Royal Decree 1716/2004, of 23 July, which regulates the obligation to maintain minimum security stocks, the diversification of the natural gas supply and the Corporación de Reservas Estratégicas de Productos Petrolíferos. (BOE 206 of 26/08/2004)
• Articles of Association of CORES (Annex IV to Royal Decree 1716/2004 of 23rd July)
• Financial Statements and Directors' Report 2015
• Financial Statements and Directors' Report 2016
• Base Prospectus
• Supplement to the Base Prospectus
• Final Terms

In the event of a discrepancy, the Spanish-language version prevails.