The story
MMG was formed in June 2009, following the purchase of the majority of assets of Oz Minerals by China Minmetals.
In December 2010, MMG was acquired by Minmetals Resources, a subsidiary of China Minmetals and listed on the Hong Kong Stock Exchange.
In September 2012, Minmetals Resources Limited changed its registered company name to MMG Limited to align the assets already operating as MMG with the registered company name.
MMG had a secondary listing on the Australian Securities Exchange from December 2015 until its delisting on December 2019.
From Wikipedia’s article on MMG Limited, shared under CC BY-SA 4.0.4