Indonesian citizen, 56 years old, domiciled in Jakarta. Ronald Sutardja serves as President Director of the Company since August 2021. Prior to joining the Company, he served as Vice President Director since 2012 and as President Director since 2014 in the Company's Subsidiary, PT Bukit Makmur Mandiri Utama (BUMA). He had also worked as Director of PT Trikomsel Oke Tbk, Head of Field Operations of Northstar Group, Infineum Singapore Pte. Ltd., Michelin Malaysia and Asia Pacific, as well as Booz, Allen & Hamilton Inc.
Obtained a Bachelor's Degree in Mechanical Engineering from University of California at Berkeley-USA, Master of Science from Massachusetts Institute of Technology-USA, and Master of Manufacturing Management from Northwestern University-Kellogg Graduate School of Management-USA.
Dian Sofia Andyasuri
Dian Sofia Andyasuri has over 22 years of experience in Indonesia, United Kingdom, and Singapore in various financial aspects of several industries including telecommunications, Oil & Gas, consultant services, and utility company. Prior to joining the Company, she worked at Thames Water, Hutchison, and Shell Indonesia with her last position as President Director and Country Chair. She holds a Bachelor's degree in Accounting from Trisakti University and Master's degree in finance from Brunel University London.
Indonesian citizen, 54 years old, domiciled in Jakarta. Sorimuda Pulungan serves as President Director of BUMA since September 2021. He has more than 25 years of experiences in the mining industry. Prior to joining BUMA in 2012, he spent 9 (nine) years with PT Vale Indonesia Tbk (formerly known as PT International Nickel Indonesia Tbk), with his last position as General Manager at Mining Technology Division. Started his career at PT Aurora Gold in 1994.
Obtained a Bachelor's Degree in Mining Technology from Bandung Institute of Technology, Master’s Degree in Financial Management from Hasanuddin University, and Doctorate's Degree in Economic from Trisakti University.
*Pulungan has submitted his resignation letter as the Company’s Director on 29 August 2023