Integrated Report 2023

I. Financial Highlights and Business Progress Financial Highlights 2Q FY3/24 Results (Year-on-Year) JAPEX (Billion Yen) Operating profit 1-2Q FY3/23 (a) 1-2Q FY3/24 (a) Change 19.3 28.5 +9.1 Ordinary profit 43.0 39.1 (3.9) Profit attributable to owners of parent 31.4 27.7 (3.6) Operating profit: Increased due to growth of sales volume for U.S. tight oil development and increased sales prices of domestic natural gas • Ordinary profit: Decreased due to decline in equity method profit and foreign exchange gains FY3/24Forecasts Revision (vs Aug.9 Forecasts) (Billion Yen) Operating profit Ordinary profit Profit attributable to owners of parent Previous (f) Aug. 9, 2023 38.9 Revised (f) Nov. 10, 2023 Change 48.8 +9.9 44.8 57.0 +12.2 34.0 45.0 +11.0 Operating profit: Expect to increase due to anticipated increase in sales prices of domestic crude oil, domestic natural gas, LNG, etc. • Ordinary profit : Expect to increase due to increased foreign exchange gains Shareholder Returns Revised annual dividend forecast to 250 yen per share (interim 125 yen + year-end forecast 125 yen) * Revision based on consolidated dividend payout ratio of 30% Decided to repurchase own shares up to 3 million shares or 20.0 billion yen Copyright © 2023 Japan Petroleum Exploration Co., Ltd. (JAPEX) All Rights Reserved. 4

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