Tullow Oil plc (the “Company” or “Tullow”) announces the results of its offer to purchase a portion of its outstanding 10.25% Senior Secured Notes due 2026 bearing ISIN: USG91237AB60 and CUSIP: G91237AB6 (the “Reg S Notes”) for cash (the “Offer”), which was announced on November 15, 2023, on the terms and subject to the conditions set out in the Offer to Purchase dated November 15, 2023 (the “Offer to Purchase”) prepared in accordance with the Offer. Capitalized terms used and not otherwise defined in this announcement have the meanings ascribed to them in the Offer to Purchase.