Investor Presentaiton

Overview of acquisition Acquisition of substantially all Wintershall Dea's upstream assets for $11.2 bn (effective date 30 June 2023) Wintershall Dea's upstream assets in Norway, Germany, Denmark, Argentina, Mexico, Egypt, Libya and Algeria¹ Acquisition Funding structure 3 Equity 3 $4.15 bn equity Harbour shares issued at agreed value of 360p/share4 Adds 1.1 bnboe of 2P reserves at c. $10/boe, and more than 300 kboepd at c.$35,000/boepd² On completion, BASF to own 46.5% of Harbour's ordinary shares; LetterOne to hold non-voting shares³ Completion expected in Q4 2024 2 $2.15 bn cash c.$4.9 bn bonds 1 (nominal value) 2 Cash consideration ■ Interim cash flows from target portfolio ■ $1.5bn bridge facility successfully syndicated 1 Existing Wintershall Dea bonds transferred to Harbour Harbour Energy Expected to deliver Investment Grade credit profile 1 Excluding the Ravn field in Denmark and Libya onshore. 2 Based on YE 2022 2P reserves and H1 2023 production ³ If the non-voting shares were, following satisfaction of conditions, to be converted into ordinary shares, Harbour's existing shareholders would own 45.5%, and BASF and LetterOne would own 39.6% and 14.9% respectively of Harbour. 4 Harbour will issue in total 921.2 million shares. Harbour Energy | Investor Presentation 22

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