Isetan (Singapore) Limited announced the appointment of Koji Oyama as Non-Independent Non-executive Director and Managing Director (Designate). 2006 to 2012: Planning and Management Department Manager of Isetan Mitsukoshi Human Solutions Company Limited. 2012 to 2014: Director and General Affairs Department Manager of Mammina Co.

Ltd. 2012 to 2018: Director and General Affairs Department Manager of Club21 Japan Limited. 2018 to 31 March 2020: President of Isetan of Japan Sdn. Bhd and ICJ Department Store (Malaysia).

1 April 2020 to present: Operating Officer, Assistant to General Manager, Overseas Operations Department.