RNS Number : 1968A National Grid PLC 11 March 2025 11 March 2025 National Grid plc ('National Grid' or 'Company') Notification of Transactions of Persons Discharging Managerial Responsibilities ('PDMR') This announcement is made in accordance with Article 19 of the Market Abuse Regulation ('MAR') and relates to the following PDMRs acquiring shares following partial vestings of awards under the Company's Retention Award Plan ('RAP'). The vestings relate to RAP Awards made to Will Serle on 1 June 2022 and Talvis Love on 3 June 2024. The RAP awards were conditional on continued employment with the Company and on the satisfaction of the performance conditions approved by the Remuneration Committee, which (after tax on the gross award) must be retained until the shareholding requirements are met. The RAP awards are subject to malus and clawback provisions. In accordance with MAR the relevant Financial Conduct Authority ('FCA') notifications are set out below. 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 DSHSFUFSFEISESD