| August 31,2018 | Aichi Refinery begins commercial production of mixed xyleneNEW |
| August 29,2018 | As the first time ever, explore the possibility of supplying offshore oil and gas platforms with power from offshore wind. |
| August 14,2018 | Announcement on Revisions to Consolidated Earnings Forecasts for the Fiscal Year Ending March 2019 (PDF:262 KB) |
| August 14,2018 | Consolidated Financial Results for the First Quarter of Fiscal Year 2018 (PDF:405 KB) |
| August 14,2018 | Presentation on Results for the 1st Quarter FY 2018 (PDF:2,580 KB) |
| August 1,2018 | Announcement on the Status of the Acquisition of Treasury Shares (PDF:234 KB) |
| July 10,2018 | Announcement Regarding Execution of Business Integration Agreement (PDF:325 KB) |
| July 10,2018 | Announcement Regarding Execution of Agreement with Our Major Shareholders (PDF:208 KB) |
| July 10,2018 | Announcement Regarding Acquisition of Treasury Shares (PDF:180 KB) |
| June 27,2018 | Regarding Certain Media Reports Released Today (PDF:203 KB) |
| June 6,2018 | (Corrections) Notice of Corrections to the Consolidated Financial Results for the Fiscal Year 2017 (PDF:137 KB) |
| May 18,2018 | Idemitsu awarded the Imperial Invention Prize,the top prize in the 2018 National Commendation for Invention awards For contributions to the commercialization of television and mobile devices featuring full-color Organic Light-Emitting Diode (OLED) displays |
| May 16,2018 | Announcement of Changes in Officers (PDF:78 KB) |
| May 15,2018 | Announcement on the Introduction of a Performance-linked Stock Compensation Plan (PDF:213 KB) |
| May 15,2018 | Announcement on Extraordinary Losses Resulting from the Transition to a Defined Contribution Pension System (PDF:239 KB) |
| May 15,2018 | Presentation on Results for FY 2017 (PDF:1,509 KB) |
| May 15,2018 | Consolidated Financial Results for the Fiscal Year 2017 (PDF:1,101 KB) |
| May 15,2018 | Establishment of a Local Subsidiary Related to the OLED Materials Business in China |