1913 Matsushima Tanko Co., Ltd. established (capital: 2 mil. yen)
1935 Oshima coal mine opened
1952 Capital increased to 50 mil. yen ; development of Ikeshima coal mine started
1961 Capital increased to 1.3 bil. yen ; shares listed on the Second Section of the Tokyo Stock Exchange
1962 Shares listed on the First Section of the Tokyo Stock Exchange and the Fukuoka Stock Exchange
1970 Oshima coal mine closed

Company name changed to Matsushima Kosan Co., Ltd.
Coal production business spun off; Business diversification began in earnest

1983 Mitsui Mining Kenzai Hanbai Co., Ltd. absorbed; company name changed to Mitsui Matsushima Co., Ltd. capital totals 3,324,680,000 yen
1990 Mitsui Matsushima Australia Pty, Ltd. established (first overseas branch)
1991 Capital participation in Liddell Joint Venture (Japan marketing rights acquired)
2001 Matsushima Coal Mine Co., Ltd. closed Ikeshima coal mine 
2002 Mitsui Matsushima International Pty, Ltd. established (overseas holding company of coal operations)
2005 Compliance committee established
First unsecured convertible bonds (MSCB) issued (3 bil. yen)
Capital totals 4,824,680,000 yen with stock conversion
2006 Second unsecured convertible bonds (MSCB) issued (3 bil. yen)
Capital totals 6,324,680,000 yen with stock conversion
Subsidiary Ikeshima Urban Mine Co., Ltd. established in Ikeshima; got into recycling business
2009 MMI Coal Tech Co.,Ltd.established
Capital totals 8,571,790,000 yen through a public stock offering and allocation of new shares to a third party

Acquisition of 15% stake in coal resource exploration company Square Exploration Pty. Ltd.

Dissolved Matsushima Tanko Co., Ltd.


Acquisition of Nagata Engineering Co., Ltd.

Acquisition of stake in the GDM Coal Mine, Indonesia

Establishment of MM Energy Co., Ltd.

Entered solar power generation business

2013 100th anniversary
Acquisition of NIPPON STRAW Co., Ltd. and affiliated as a subsidiary
Establishment of MM Life Support Co., Ltd. ; entering Nursing Care Business
2015 Acquisition of Hanabishi-sewing Co., Ltd.
2016 Acquisition of CLEAN SURFACE TECHNOLOGY Co., Ltd.

Acquisition of ownership of Mitsui Minatoclub

2018 Shifted to a holding company structure and changed its company name to Mitsui Matsushima Holdings, Co., Ltd.

Acquired MEIKO SHOKAI Co., Ltd. as a subsidiary.

Establishment of Minatoclub Operations Co.,Ltd.


Acguired KMT corporation as a subsidiary.

Acguired Sansei Denshi Co.,Ltd. as a subsidiary.

Establishment of MMI Japan Co.,Ltd.

Acguired SYSTECH KYOWA CO.,LTD. as a subsidiary.