Ting Chun Yuen: Resigned as chief executive with effect from Oct 20.
Mr Ting, 53, has been re-designated from executive chairman to non-executive director. He will continue to oversee the operations of the companies' subsidiaries in China.
The board of Ziwo Holdings has proposed that Mr Tay Wee Kwang take up the position of executive director and chief executive.
But Mr Tay has said he will accept the appointment only if shareholders approve the proposed change of the firm's core business to that of green energy, as announced on July 13.
Ascendas Fund Management
Chia Nam Toon: Resigned as chief executive officer with effect from Oct 20.
Mr Chia, 57, left for personal reasons. He also resigned as a director on the same day.
Oon Yan Yi: Stepped down as group financial controller with effect from Oct 17. Ms Oon, 33, left to pursue other interests.
Koh Beng Chuan: Appointed as group financial controller with effect from Oct 17. Mr Koh, 42, was formerly regional controller for Asia-Pacific at Wincor Nixdorf.
JES International Holdings
Siow Chin How: Resigned as group financial controller with effect from Oct 20. Mr Siow, 38, left to pursue other career opportunities.