RNS Number : 9037Z Harbour Energy PLC 10 March 2025 Harbour Energy plc (the "Company" or "Harbour") Notification of transactions of Persons Discharging Managerial Responsibilities Harbour announces that Linda Z. Cook, Chief Executive Officer, has purchased 75,000 ordinary shares in the Company ("Ordinary Shares") at an average price of 189.1446 pence per Ordinary Share. As a result of this purchase, Linda Z. Cook has an interest in 8,950,490 Ordinary Shares, representing 0.62% of the Company's issued ordinary share capital. Enquiries Harbour Energy plc Tel: 020 7730 1111 Rachel Rickard, Company Secretary The information set out below is provided in accordance with the requirements of Article 19(3) of MAR. This information is provided by RNS, the news service of the London Stock Exchange. RNS is approved by the Financial Conduct Authority to act as a Primary Information Provider in the United Kingdom. Terms and conditions relating to the use and distribution of this information may apply. For further information, please contact rns@lseg.com or visit www.rns.com. RNS may use your IP address to confirm compliance with the terms and conditions, to analyse how you engage with the information contained in this communication, and to share such analysis on an anonymised basis with others as part of our commercial services. For further information about how RNS and the London Stock Exchange use the personal data you provide us, please see our Privacy Policy. END DSHFLFETVLIDIIE