Investor Presentaiton

Financial Results Financial Results ■Net Sales by segment [\ billions] 2Q FY2022 2Q FY2023 Change Petroleum Basic Chemicals 3,814.1 3,189.1 (625.0) (16.4%) 363.0 280.2 (82.8) (22.8%) Functional Materials 245.6 248.4 +2.8 +1.1% Power and Renewable Energy 89.8 72.1 (17.7) (19.7%) Resources* 300.3 233.3 (67.0) (22.3%) Oil Exploration and Production 22.2 21.8 (0.5) (2.1%) Coal 278.1 211.5 (66.5) (23.9%) Others/Reconciliation Total 1.3 1.4 +0.1 +8.3% 4,814.1 4,024.5 (789.6) (16.4%) *Fiscal year for Oil E&P and Coal included in the Resources Segment end in Dec. idemitsu Copyright Idemitsu Kosan Co., Ltd. All Rights Reserved. 38 88

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