Harbour Energy plc announces that it has entered into a Sale and Purchase Agreement to sell its operated interests in the producing Natuna Sea Block A field and the Tuna development project in Indonesia to Prime Group for a cash consideration of $215 million.  

The sale is subject to customary regulatory approvals and completion is targeted for Q2 2026. 

Steve Cox, Managing Director of Harbour's Indonesia Business Unit, commented:
"This transaction marks a key milestone for Harbour in Indonesia and supports our strategy to focus capital and resources on our most competitive and material opportunities.

"It is also a significant moment for our colleagues in the country, whose hard work and commitment have built Natuna Block A and Tuna into high quality assets over many years. I wish them well as they enter a new chapter under the experienced ownership of Prime Group."

Background:

• Prime Group has upstream and downstream oil and gas businesses in Indonesia, including a 25% interest in the producing Natuna Sea Block B field.
• The Natuna Sea Block A sale has an effective date of 1.1.2025 and the Tuna sale will be effective on completion. The consideration is subject to customary completion adjustments.
• Harbour has a 28.67% operated interest in Natuna Sea Block A which produced c.4 kboepd (net) in the nine-month period to 30 September 2025. As at year end 2024, Harbour had booked 2P reserves of 7.4 mmboe in relation to Natuna Sea Block A.
• Harbour has a 50% operated interest in the Tuna project. As at year end 2024, Harbour had booked 2C resources of 54 mmboe in relation to the Tuna project.
• Following completion of the transaction, Harbour will maintain a presence in Indonesia through its interests in the Andaman Sea discoveries.

KeyFacts Energy: Harbour Energy Indonesia country profile   l   KeyFacts Energy: Acquisitions & Mergers news