Tok, Riva Siahaan and Kerry Adrianto Convicted by Judge in Guilty Verdict
JAKARTA — A panel of judges has delivered guilty verdicts to nine defendants in the first batch of a major corruption case involving the management of crude oil and refinery products at PT Pertamina Persero.
The defendants received varying sentences commensurate with their roles, responsibilities, and the extent of state losses they caused.
Muhamad Kerry Adrianto Riza, the beneficial owner of PT Orbit Terminal Merak (PT OTM) and PT Jenggala Maritim Nusantara (PT JMN), received the heaviest sentence in this case.
“The court hereby sentences the defendant Muhamad Kerry Adrianto Riza to 15 years imprisonment and a fine of Rp 1 billion, alternatively 190 days imprisonment,” stated Chief Judge Fajar Kusuma Aji when reading the verdict at the Jakarta Anti-Corruption Court on Friday (27 February 2026).
Two of his employees also received significant sentences: Dimas Werhaspati, Commissioner at PT Navigator Khatulistiwa and Commissioner of PT Jenggala Maritim; and Gading Ramadhan Joedo, Commissioner of PT Jenggala Maritim and Chief Executive Officer of PT Orbit Terminal Merak, were each sentenced to 13 years imprisonment and a Rp 1 billion fine, alternatively 190 days imprisonment.
Gading served as Kerry’s representative in the procurement project for the fuel depot terminal (BBM) in Merak owned by PT OTM. He conducted numerous meetings with PT Pertamina officials, including Alfian Nasution, then Vice President of Supply and Distribution at PT Pertamina (Persero), to discuss cooperation agreements for leasing the fuel depot terminal.
Dimas primarily managed the project for leasing three vessels owned by Kerry. To facilitate the incorporation of Kerry’s ships into Pertamina projects, Dimas frequently met with PT Pertamina executives, including Yoki Firnandi, Chief Executive Officer of PT Pertamina International Shipping (PT PIS).
The leasing of the fuel depot terminal owned by PT OTM caused state financial losses totalling Rp 2.9 trillion.
The leasing project for the three vessels belonging to PT JMN’s assets is believed to have caused state losses of USD 9.86 million and Rp 1.07 billion.
“The court hereby sentences the defendant Riva Siahaan to 9 years imprisonment and a fine of Rp 1 billion, alternatively 190 days imprisonment,” stated Chief Judge Fajar Kusuma Aji when reading the verdict.
The judge found that Riva committed criminal offences in a refinery product import project together with Maya Kusmaya, Director of Marketing and Commerce at PT Pertamina Patra Niaga, and Edward Corne, Vice President of Trading Operations at PT Pertamina Patra Niaga.