Investor Presentaiton

Topics Affecting Progress on the Medium-term Plan (2/4) Progress on the Medium-term Plan Commenced joint study with LOPS on SAF feedstock procurement ✓ Aiming to establish a system to stably procure SAF feedstocks such as waste cooking oil from various parts of Japan by the late 2020s [Image of Future Collaboration] H2 NH3 Scope of joint study by both companies Stable procurement of SAF feedstock through the optimization and cost reduction of storage and transportation (Link to our disclosure document) https://www.idemitsu.com/en/news/2023/230824.html SAF production Contribution to the decarbonization of aviation fuels H2 NH3 ■Commenced joint study with PETRONAS on SAF supply chains ✓ A feasibility study to scale-up bio feedstock possibilities including cost analyses ✓ Also focusing on supply potential of non-edible oil feedstock trees such as Pongamia and Jatropha (Link to our disclosure document) https://www.idemitsu.com/en/content/100043647.pdf demit idemitsu idemitsu MOU signing ceremony Copyright Idemitsu Kosan Co., Ltd. All Rights Reserved. 33

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