Idemitsu Kosan : Announcement on the Status of the Acquisition of Treasury Shares

December 2, 2024

Press Release

Company Name: Idemitsu Kosan Co., Ltd. Representative Director & Chief Executive Officer: Shunichi Kito

(Company Code: 5019, TSE Prime Market)

Contact person: Daisuke Mogi, General Manager

Announcement on the Status of the Acquisition of Treasury Shares

(Acquisition of Treasury Shares pursuant to the Articles of Incorporation

under the Provision of Article 459, Paragraph 1 of the Companies Act of Japan)

Idemitsu Kosan Co.,Ltd (the "Company") hereby announces the status of the acquisition of the Company's treasury shares, pursuant to the Articles of Incorporation under the provision of Article 459, paragraph 1 of the Companies Act of Japan, which was resolved by the board of directors meeting held on May 14, 2024, as follows:

1.	Type of shares acquired	Common shares of the Company
2.	Aggregate number of shares acquired	10,238,000 shares
3.	Aggregate amount of purchase price	10,353,992,450 yen
4.	Acquisition period	From November 1, 2024 to November 30, 2024 (Execution
	basis)
5.	Acquisition method	Market purchase

(Reference)

1. Details of the acquisition of treasury shares resolved by the board of directors meeting held on May 14, 2024

(1) Type of shares to be acquired	Common shares of the Company
(2) Aggregate number of shares to be acquired	90 million shares (upper limit)
	(6.5% of the total number of the issued shares, excluding
	treasury shares) Aggregate amount of purchase price
(3) Aggregate amount of purchase price	70 billion yen (upper limit)
(4) Acquisition period	From May 15, 2024 to March 14, 2025
(5) Acquisition method	Market purchase

2. Aggregate number and price of the treasury shares acquired up to November 30, 2024 based on the above resolution

(1)	Aggregate number of shares acquired	40,254,500 shares
(2)	Aggregate amount of purchase price	40,227,851,750 yen

End