Ray Antonio Gunara serves as the President Director of Harum Energy based on the Annual GMS Resolution dated August 25, 2020.

Prior to joining Harum Energy in 2007, Ray was an investment banker at Credit Suisse (2004 – 2007), Deutsche Bank (2001 – 2004) and PT Bahana Securities (1994 – 2001).

Ray holds bachelor’s and master’s degrees in electrical engineering from Villanova University, USA and Lehigh University, USA, respectively. He also holds a master’s degree in business administration from the University of Pittsburgh, USA.

Kenneth Scott Andrew Thompson serves as a Director of Harum Energy based on the Annual GMS Resolution dated August 25, 2020.

Scott previously worked at various international mining organizations, including Anglo American Corporation, South Africa (1992 – 1996), PT Adaro (1996 – 1999) and Marston & Marston, in Australia and USA (2000 – 2003). He has over 30 years’ experience in mine development and operations management.

Scott graduated from Camborne School of Mines, UK with honors in Mining Engineering and from University of Cape Town, South Africa with a master’s degree in business administration.

Hariyadi serves as a Director of Harum Energy based on the Annual GMS Resolution dated 27 May 2025.

Hariyadi started his carrier in coal mining sector as a Junior Mining Engineer at PT Kaltim Prima Coal in 1988 and was promoted as superintendent. In 1993, Hariyadi joined the management of companies within Tanito Group which operates several coal mining concessions located in East Kalimantan and Central Kalimantan, Indonesia. 

Currently, Hariyadi also serves as Vice Chairman, Clean Coal Technology and Downstream of the Indonesian Coal Mining Association (for the term of 2024 - 2029).

Hariyadi holds a Mining Enginering Decree from Bandung Institute of Technology.