1 – Basis of preparation Index1234 OMV Aktiengesellschaft (registered in the Austrian Register of Companies with its office based at Trabrennstraße 6–8, 1020 Vienna, Austria) is an integrated, international oil, gas, and chemicals company with activities in the divisions Chemicals & Materials, Fuels & Feedstock, and Energy. These financial statements have been prepared and are in compliance with International Financial Reporting Standards (IFRSs) as adopted by the EU and in accordance with the supplementary accounting regulations pursuant to Sec. 245a, Para. 1 of the Austrian Commercial Code (UGB). The financial year corresponds to the calendar year. The consolidated financial statements are in general based on the historical cost principle, except for certain items that have been measured at fair value as described in Note 3 – Accounting policies, judgments, and estimates. The accounting policies adopted are consistent with those of the previous financial year, except where otherwise indicated. The consolidated financial statements for 2023 have been prepared in million EUR (EUR mn, EUR 1,000,000). Accordingly, there may be rounding differences. The consolidated financial statements comprise the financial statements of OMV Aktiengesellschaft and the entities it controls (its subsidiaries) as at December 31, 2023. The financial statements of all consolidated companies are prepared in accordance with uniform Group-wide accounting policies. A list of subsidiaries, equity-accounted investments, and other investments is included under Note 40 – Direct and indirect investments of OMV Aktiengesellschaft, including consolidation method, business segment, place of business, and interest held by OMV. The consolidated financial statements for 2023 are subject to approval and release for publication by the Supervisory Board on March 7, 2024. schließen mn Million Basis of Preparation and Accounting Policies2 – Effects of climate change and the energy transition