Stock-related Information

(as of September 30, 2025)

Total Number of Shares Authorized

150,300,000

Number of Issued Shares

44,898,730

Number of Shareholders

27,059

Major Shareholders

(as of September 30, 2025)

Name Number of shares owned Voting rights retio
Nippon Steel Corporation 11,592,932 26.68%
Hideichiro Takashima 4,347,460 10.00%
The Master Trust Bank of Japan, Ltd. (trust account) 2,712,800 6.24%
Akihiko Takashima 2,233,000 5.14%
Mitsui & Co., Ltd. 1,470,000 3.38%
Godo Steel, Ltd. 1,347,000 3.10%
The Custody Bank of Japan, Ltd.
(Air Water Inc. retirement benefit trust account)		 1,308,900 3.01%
Government of Norway 1,215,452 2.80%
The Custody Bank of Japan, Ltd. (trust account) 750,100 1.73%
The Custody Bank of Japan, Ltd.
(Air Water Safety Service Inc. retirement benefit trust account)		 692,000 1.59%

Note: Calculations of share ownership ratios exclude treasury stock (1,439,803 shares).

Composition of Shareholders

as of September 30, 2025 (Unit：Shares）
Composition of Shareholders
Financial Institutions 6,648,200
Securities Companies 426,408
Other Domestic Corporations 18,420,687
Foreign Investors 6,315,471
Individuals & Others 11,648,161
Treasury Stock 1,439,803