Indonesian citizen, 47 years old, he was appointed as a member of the Company's Strategic and Risk Management Committee for the period 2022-2024, based on the Decree of the Board of Commissioners No. 303/KEP-DK/MH/VI/2022 dated 20 June 2022.

He holds an MBA from the Kellogg School of Management at Northwestern University. Currently, he is also the Managing Director of Mizuho Asia Partners (since 2012). Previously, Winston was a Founding Partner at Quvat Capital, and a Management Consultant at A.T. Kearney.