Data of Shares and Shareholders (as of March 31, 2010)

Number of shares issued 40,000,000
Number of Shareholders 11,082

Distribution (Number of shares issued)

Major shareholders (Top 10)

Name Number of shares held
(thousand of Shares)
%
Nissho Kosan K.K 6,780 16.9
Idemitsu Culture and Welfare Foundation 3,098 7.7
Idemitsu Employee Stockholders Committee 2,004 5.0
Idemitsu Museum of Arts Foundation 2,000 5.0
Japan Trustee Services Bank, Ltd.(Trust account) 1,287 3.2
The Bank of Tokyo-Mitsubishi UFJ, Ltd. 1,285 3.2
Sumitomo Mitsui Banking Corporation 1,285 3.2
The Sumitomo Trust & Banking Co., Ltd. 1,285 3.2
The Master Trust Bank of Japan, Ltd.(Trust account) 1,064 2.6
Shosuke Idemitsu 932 2.3

*1 The shareholding ratios are calculated by excluding the shares of treasury stock of the Company(9,444 shares).

*2 Idemitsu Culture and Welfare Foundation and Idemitsu Museum of Arts Foundation changed their legal statuses from incorporated foundations to public interest foundations,respectively,as of April 1,2010.