Business
Sale of Natuna Sea Block A and Tuna in Indonesia
Harbour Energy plc has agreed to sell its operated interests in the Natuna Sea Block A field and the Tuna development project in Indonesia to Prime Group for $215 million in cash, with completion anticipated in the second quarter of 2026, subject to regulatory approvals. This transaction, which includes Harbour's 28.67% operated interest in Natuna Sea Block A, which produced approximately 4 kboepd net in the first nine months of 2025 and held 7.4 mmboe of 2P reserves at year-end 2024, and its 50% operated interest in the Tuna project, which had 54 mmboe of 2C resources at year-end 2024, aligns with Harbour's strategy to focus capital on more competitive opportunities. Following the sale, Harbour will retain interests in the Andaman Sea discoveries in Indonesia. Disclaimer*
About this update from Harbour Energy Plc
[{"type":"text","content":"\n\nHarbour Energy plc\n(\"Harbour\")\n8 December 2025\nSale of Natuna Sea Block A and Tuna in Indonesia\n \n \nHarbour 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. \n \nThe sale is subject to customary regulatory approvals and completion is targeted for Q2 2026. \n \nSteve Cox, Managing Director of Harbour's Indonesia Business Unit, commented:\n\"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.\n \n\"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.\"\n \n\n\n\n\nEnquiries\n\n\n \n\n\n\n\nHarbour Energy plc\n\n\n+44 (0) 203 833 2421\n\n\n\n\nElizabeth Brooks, SVP Investor Relations\n\n\n\n\n\n\n\nAndy Norman, SVP Communications\n\n\n\n\n\n\n\nEmail: [email protected]\n\n\n\n\n\n\n\n \nNotes to editors:\nPrime Group has upstream and downstream oil and gas businesses in Indonesia, including a 25% interest in the producing Natuna Sea Block B field.\n \nThe 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.\n \nHarbour 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.\n \nHarbour 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.\n \nFollowing completion of the transaction, Harbour will maintain a presence in Indonesia through its interests in the Andaman Sea discoveries.\n \nHoulihan Lokey is acting as sole financial advisor to Harbour on the transaction.\n \n\n","length":5334,"tagName":...