Investment Grade credit ratings confirmed

Harbour Energy plc

("Harbour" or the "Company")

Investment Grade credit ratings confirmed

11 September 2024

Harbour Energy plc is pleased to announce that following completion of the Wintershall Dea asset portfolio acquisition, S&P Global Ratings and Fitch Ratings have upgraded the Company's Issuer credit rating to BBB- and the issue rating on Harbour's $500 million senior unsecured notes to BBB-. In addition, Moody's Investors Service has assigned a Baa2 credit rating to Harbour. All ratings have stable outlooks.

Enquiries

Harbour Energy plc                                                                         +44 (0) 203 833 2421

Elizabeth Brooks, Head of Investor Relations

Brunswick (PR advisors)                                                                +44 (0) 207 404 5959

Patrick Handley

Will Medvei