REG - Harbour Energy PLC - Proposed Off-Market Purchase Alongside BASF Offer

RNS Number : 3197U Harbour Energy PLC 10 September 2026

THIS ANNOUNCEMENT CONTAINS INSIDE INFORMATION

Harbour Energy plc

(the "Company" or "Harbour Energy")

Proposed off-market purchase alongside BASF offering

10 September 2026

Harbour Energy notes the announcement today by BASF Handels-und Exportgesellschaft mit beschränkter Haftung ("BASF") of its proposed offering of ordinary shares of 0.002 pence each in the Company to institutional investors by way of an accelerated bookbuild offering process (the "Proposed Offering").

The Company has agreed with BASF to make an off-market purchase of approximately $200 million worth of ordinary shares from BASF subject to the terms and conditions of the off-market buyback contract entered into by Harbour Energy and BASF in June 2026, including (a) the purchase price per ordinary share to be paid by Harbour Energy to BASF to be equal to the offering price per ordinary share in the Proposed Offering, and (b) completion of the Proposed Offering.

Consideration for the off-market purchase above $150 million will be deducted from the ongoing $250 million share buyback announced on 6 August 2026. The Company intends to cancel the purchased ordinary shares.

Further details will be provided following announcement by BASF of the results of the Proposed Offering.

Enquiries

Telephone +44 (0) 203 833 2421

Elizabeth Brooks, SVP Investor Relations

Andy Norman, SVP Communications

Rachel Benjamin, Company Secretary

The information contained within this announcement is deemed by Harbour to constitute inside information for the purposes of the UK Market Abuse Regulation. By the publication of this announcement via a Regulatory Information Service, this inside information is now considered to be in the public domain. The person responsible for arranging for the release of this announcement on behalf of Harbour is Howard Landes, General Counsel.

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