Edwin Soeryadjaya

Edwin started his career in 1978 at Astra International, one of Indonesia's largest diversified companies founded by his late father, William Soeryadjaya.

He spearheaded Astra’s financial restructuring effort in 1987, which culminated in its public listing on Indonesia Stock Exchange in February 1990.

He left as Vice President Director in 1993.

He was awarded the 2010 Indonesia Entrepreneur of The Year by Ernst & Young.
Edwin is currently the Chairman of PT Adaro Energy Tbk, PT Tower Bersama Infrastruktur Tbk, PT Global Kalimantan Makmur, PT Pulau Seroja Jaya and Interra Resources Limited. 

He also serves on the board of commissioners of PT Lintas Marga Sedaya and PT Mitra Pinashtika Mustika.

A longtime proponent of education, he is active in the community through his role as Chairman of the Christian University of Indonesia Foundation (Yayasan Universitas Kristen Indonesia).

Edwin graduated from University of Southern California's School of Business in 1974 and is married with three children.



Michael William P. Soeryadjaya

Michael obtained his Bachelor of Arts degree in Business Administration from Pepperdine University.

Michael serves as a President Director of PT Saratoga Investama Sedaya Tbk. since June 2015. Michael has extensive experience in merger and acquisitions including involvement in the Initial Public Offerings of PT Saratoga Investama Sedaya Tbk., PT Mitra Pinasthika Mustika Tbk., and PT Merdeka Copper Gold Tbk.

Currently he is also a Director of PT Merdeka Copper Gold Tbk. (gold and copper mining), and a Commissioner of PT Provident Agro Tbk. (palm plantation), PT Mitra Pinasthika Mustika Auto (automotive dealership), PT Gilang Agung Persada (lifestyle consumer products), and PT Medco Power Indonesia (power generation).



Darmoyo Doyoatmojo

Joined Medco Group in 1976.

Graduated in Electrical Engineering, Bandung Institute of Technology in 1975, received his MBA (1990) and MSc (1991) degree from the University of Southern California, USA.

Director of PT Medco Energi Internasional Tbk since 1994.

Commissioner of the drilling services subsidiary, PT Apexindo Pratama Duta and at the exploration and production of oil and gas subsidiary, PT Exspan Nusantara and PT Exspan Tarakan, and recently has been appointed as the Chief Executive Officer of Medco Energi Global Pte. Ltd and PT Medco Energi Internasional Tbk



Ronald Gunawan

Born in 1964 in West Papua, Indonesia, Ronald Gunawan received a MSc degree from Texas A&M University and a BSc degree from Bandung Institute of Technology (ITB), both in Petroleum Engineering.

Over a period of 27 years, Ronald has gained extensive experience in the national and international O&G industry through a variety of roles – from field operations, subsurface, project management, and asset management to general management – in Indonesia, Australia and Italy.

As VP Operations & Development of Premier Oil Indonesia (2014-2015), President & General Manager of Hess Indonesia (2012-2014), various management positions in operations and projects with Eni Australia and Eni E&P (2007-2012), and VP Assets of Vico Indonesia (2002-2006), he has well rounded experience in managing both newly developed and mature complex assets in onshore and offshore.