Nine Defendants Convicted in Comprehensive Oil Corruption Case Chronology
A panel of judges at the Corruption Court (Pengadilan Tipikor) of the Central Jakarta District Court has convicted nine defendants in a corruption case involving crude oil and refinery product governance at PT Pertamina (Persero), its Subholdings, and Work Cooperation Contractors (KKKS) for the period 2018-2023.
The verdicts were delivered during hearings held over two days on Thursday evening and Friday early morning, 26-27 February 2026, at the Corruption Court of Jakarta Central District Court.
The nine defendants are divided into three clusters: the Pertamina Patra Niaga (PPN) cluster, the Pertamina International Shipping (PIS) and Kilang Pertamina Internasional (KPI) cluster, and the private sector cluster.
The Pertamina Patra Niaga cluster includes former Chief Executive Officer Riva Siahaan, former Director of Central Marketing and Trading Maya Kusmaya, and former VP Trading Operations Edward Corne.
The PIS-KPI cluster includes former VP Feedstock Management Agus Purwono, former Director of Feedstock and Product Optimisation Sani Dinar Saifuddin, and former PIS Chief Executive Officer Yoki Firnandi.
The private sector cluster includes Muhammad Kerry Adrianto Riza as beneficial owner of PT Navigator Khatulistiwa, Dimas Werhaspati as Commissioner of PT Navigator Khatulistiwa and PT Jenggala Maritim, and Gading Ramadhan Joedo as Commissioner of PT Jenggala Maritim and Chief Executive Officer of PT Orbit Terminal Merak.
The heaviest sentence was imposed on Muhammad Kerry Adrianto Riza, son of prominent oil trader Mohammad Riza Chalid, who received 15 years imprisonment, a fine of Rp1 billion, and compensation of Rp2.9 trillion.
All nine defendants were fined Rp1 billion, with alternative imprisonment of 190 days if payment is not made.
The remaining eight defendants received sentences of 9 years imprisonment for four defendants, 10 years for two defendants, and 13 years for two defendants from the private sector cluster.
The conviction details are as follows:
Pertamina Patra Niaga Cluster:
Riva Siahaan received 9 years imprisonment with a Rp1 billion fine payable within one month (extendable for a maximum additional month) after the verdict. If unpaid, assets are seized and auctioned; if insufficient, an additional 190-day prison sentence applies.
Maya Kusmaya received 9 years imprisonment with identical fine conditions and enforcement mechanisms as Riva Siahaan.
Edward Corne received 10 years imprisonment (one year longer than Riva and Maya) with the same fine conditions and enforcement mechanisms.
PIS-KPI Cluster:
Yoki Firnandi received 9 years imprisonment with a Rp1 billion fine, with an alternative 190-day prison sentence if unpaid.
Sani Dinar Saifuddin received 9 years imprisonment with a Rp1 billion fine and an alternative 190-day prison sentence.
Agus Purwono received 10 years imprisonment with a Rp1 billion fine and an alternative 190-day prison sentence.
Private Sector Cluster:
Muhammad Kerry Adrianto Riza received 15 years imprisonment with a Rp1 billion fine (alternative 190-day prison sentence) plus an additional penalty requiring payment of Rp2.9 trillion in restitution (alternatively 5 years imprisonment if unpaid).
Dimas Werhaspati received 14 years imprisonment with a Rp1 billion fine and an alternative 190-day prison sentence.
Gading Ramadhan Joedo received 14 years imprisonment with a Rp1 billion fine and an alternative 190-day prison sentence.
Case Chronology:
These convictions come just one year after the Attorney General’s Office (Kejagung) first announced suspects in this oil corruption case. The Kejagung initially announced seven suspects on Monday evening, 24 February 2025:
Riva Siahaan, Chief Executive Officer of PT Pertamina Patra Niaga
Sani Dinar Saifuddin, Director of Feedstock and Product Optimisation at KPI
Yoki Firnandi, Chief Executive Officer of PT Pertamina International Shipping
Agus Purwono, former VP Feedstock Management at KPI
Muhammad Kerry Adrianto Riza, beneficial owner of PT Navigator Khatulistiwa
Dimas Werhaspati, Commissioner of PT Navigator Khatulistiwa and PT Jenggala Maritim
Gading Ramadhan Joedo, Commissioner of PT Jenggala Maritim and Chief Executive Officer of PT Orbit Terminal Merak
The illegal conduct resulted in state losses of approximately Rp193.7 trillion, comprising:
Domestic crude oil export losses: approximately Rp35 trillion
Crude oil import losses via DMUT/Broker: approximately Rp2.7 trillion
Fuel import losses via DMUT/Broker: approximately Rp9 trillion
Compensation provision losses (2023): approximately Rp126 trillion
Subsidy provision losses (2023): approximately Rp21 trillion
Two days later, on Wednesday, 26 February 2025, the Kejagung announced two additional suspects:
Maya Kusmaya, Director of Central Marketing and Trading at PT Pertamina Patra Niaga
Edward Corne, VP Trading Operations at PT Pertamina Patra Niaga
This brought the total to nine suspects, now convicted as defendants.
Subsequently, on Thursday, 10 July 2025, the Kejagung announced nine additional suspects in the oil corruption case, including Mohammad Riza Chalid, significantly expanding the scope of the investigation.