(Change in Disclosure Matters) Announcement Concerning Resolution on Acquisition of Treasury Stock: Expansion of repurchase authorization and extension of the acquisition period.Open a PDF

This document has been translated from the Japanese original for reference purposes only. In the event of any discrepancy between this translated document and the Japanese original, the original shall prevail.

November 13, 2025

Company name: INPEX CORPORATION Name of representative: Takayuki Ueda,

Representative Director, President & CEO (Securities code: 1605; Prime Market)

Inquiries: Shohei Yoshida, General Manager, Corporate Communications Unit (Telephone: [phone])

(Change in Disclosure Matters) Announcement Concerning Resolution on Acquisition of Treasury Stock:

Expansion of repurchase authorization and extension of the acquisition period. (Under the provisions of its Articles of Incorporation pursuant to paragraph 2, Article 165 of the Companies Act)

TOKYO, JAPAN - INPEX CORPORATION (The "Company") announced today that its Board of Directors, at a meeting held on August 8, 2025, resolved for the Company to acquire its treasury stock pursuant to Article 156 of the Companies Act, as applied mutatis mutandis under Article 165, Paragraph 3. Furthermore, at a meeting held on November 13, 2025, the Board resolved to expand the authorization for the acquisition of treasury stock and extend the acquisition period. Details are as follows.

1. Objective of amendments:

   To further enhance shareholder returns and improve capital efficiency.

   	Before Amendments (Board of Directors resolution on August 8, 2025)	After Amendments (Board of Directors resolution on November 13, 2025)
   (1) Type of shares to be acquired:	Common shares	Common shares
   (2) Total number of shares to be acquired:	Up to 50 million shares (4.17% of total number of issued shares excluding treasury stock)	Up to 60 million shares (5.01% of total number of issued shares excluding treasury stock)
   (3) Total cost of acquisition:	Up to 80.0 billion yen	Up to 100.0 billion yen
   (4) Period of acquisition:	From August 12, 2025 to December 31, 2025	From August 12, 2025 to January 31, 2026
   (5) Method of acquisition:	Market purchases on the Tokyo Stock Exchange	Market purchases on the Tokyo Stock Exchange

2. Details of amendments relating to the repurchase: Amendments are underlined.

(Reference)

1. Cumulative total of shares repurchased up to October 31, 2025 pursuant to the Board of Directors resolution on August 8, 2025

   Total number of shares repurchased:	18,518,500 shares
   Total cost of acquisition:	47,789,585,000 yen

2. Total number of issued common shares and treasury stock held as of October 31, 2025

Total number of issued shares (excluding treasury stock):	1,179,909,147 shares
Total number of treasury stock:	79,226,920 shares

Note: The shares held by the Board Incentive Plan Trust (1,012,209 shares) are not included in the number of treasury stock. Including treasury stock acquired through odd-lot share purchase requests.