REG - Harbour Energy PLC - Sale of Natuna Sea Block A and Tuna in Indonesia

Harbour EnergyAnnouncement

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RNS Number : 6211K  Harbour Energy PLC  08 December 2025

Harbour Energy plc

("Harbour")

8 December 2025

Sale of Natuna Sea Block A and Tuna in Indonesia

 

 

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."

 

 Enquiries
 Harbour Energy plc                                           +44 (0) 203 833 2421
 Elizabeth Brooks, SVP Investor Relations
 Andy Norman, SVP Communications
 Email: CorporateExternalCommunications@harbourenergy.com
 (mailto:CorporateExternalCommunications@harbourenergy.com)

 

Notes to editors:

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.

 

Houlihan Lokey is acting as sole financial advisor to Harbour on the
transaction.

 

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