Investor Presentaiton

Sales Volume ■Basic Chemicals Volume [kt,%] Basic Chemicals 2Q FY2022 2Q FY2023 1,709 Change 1,617 (91) (5.3%) ■Functional Materials Lubricants Performance Chemicals *Lubricants include sales overseas ■ Power/Renewable Energy [KKL,kt,%] 2Q FY2022 2Q FY2023 Change 577 565 (12) (2.0%) 346 299 (47) (13.6%) [Mkwh,%] 2Q FY2022 2Q FY2023 Change Retail Power Sales 1,882 1,020 (863) (45.8%) idemitsu Copyright Idemitsu Kosan Co., Ltd. All Rights Reserved. 43 33

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