August 30, 2013 Conclusion of Memorandum to Discuss Collaboration Opportunities at Cosmo Oil Chiba Refinery and Kyokuto Petroleum Industries Chiba Refinery
March 26, 2013 Items Pertaining to Status as "Other Affiliated Company (Controlling Shareholder, etc.)"
February 21, 2013 Abolition of Directors Retirement Benefits Program and Introduction of Stock Compensation-Type Stock Options