Notice Regarding Share Buyback Status and Completion of Buyback (Acquisition of Treasury Stock Based on the Articles of Incorporation under Article 165, Paragraph 2 of the Companies Act)

Overview of Treasury Stock Acquisition

INPEX Corporation implemented treasury stock acquisition based on the resolutions of the Board of Directors on August 8, 2025, and November 13, 2025, pursuant to the provisions of Article 156 as applied mutatis mutandis under Article 165, Paragraph 3 of the Companies Act. During the period from January 1 to January 9, 2026, 3,216,500 common shares were acquired through market purchases on the Tokyo Stock Exchange, with a total acquisition cost of 9,975,215,800 yen. Accordingly, the treasury stock acquisition based on the aforementioned Board resolution has been completed.

Cumulative Acquisition Status and Acquisition Conditions

The Board resolution on November 13, 2025, set the upper limit for the number of shares to be acquired at 60 million shares, the acquisition cost ceiling at 100 billion yen, and the acquisition period from August 12, 2025, to January 31, 2026. As of January 9, 2026, the cumulative number of shares acquired totaled 35,238,300 shares, with a total acquisition cost of 99,999,944,750 yen. All acquisitions were conducted through market purchases on the Tokyo Stock Exchange.