- July 28, 2015 Earnings Forecast Revision
- July 07, 2015 Recipients of 2015 TonenGeneral Children's Culture Award and TonenGeneral Music Awards Announced
- June 24, 2015 Announcement of Anticipated Changes in Executive Officers
- June 15, 2015 Ceremony for Commencement of Pipeline Construction
- June 15, 2015 Notice on final value of assets and liabilities to be succeeded for Spin-off (Simplified Absorption-type Spin-off) to Cosmo Petroleum Gas Co., Ltd.