Transaction in Own Shares Hammerson plc (Incorporated in England and Wales) (Company number 360632) LSE and Euronext Dublin share code: HMSO JSE share code: HMN ISIN: GB00BRJQ8J25 ("Hammerson" or "the Company") TRANSACTION IN OWN SHARES 11 December 2024 The Company announces that, in accordance with the terms of its share buyback programme announced on 16 October 2024 (the "Share Buyback Programme"), the Company has purchased the following number of its ordinary shares of 5 pence each from Morgan Stanley & Co. International plc. Such purchase was effected pursuant to instructions issued by the Company on 16 October 2024. Date of purchase: 10 December 2024 Number of ordinary shares purchased: 93,037 Highest price paid per share (pence): 290.40 Lowest price paid per share (pence): 284.20 Volume weighted average price paid per share (pence): 286.22 The Company will cancel the purchased shares. In accordance with Article 5(1)(b) of Regulation (EU) No 596/2014 as incorporated into and implemented under English law (including by virtue of the European Union (Withdrawal) Act 2018), a full breakdown of the individual trades made by Morgan Stanley & Co. International plc on behalf of the Company as part of the Share Buyback Programme is attached to this document and can be accessed through the link provided below. http://www.rns-pdf.londonstockexchange.com/rns/5768P_1-2024-12-10.pdf Since 16 October 2024 pursuant to the Share Buyback Programme, the Company has purchased 6,291,700 ordinary shares. This announcement does not constitute, or form part of, an offer or any solicitation of an offer for securities in any jurisdiction. Contact: Josh Warren Director of Strategy, Commercial Finance and Investor Relations Tel: +44 20 7887 1053 josh.warren@hammerson.com Richard Crowle Senior Assistant Company Secretary Tel: +44 20 7887 1000 Richard.crowle@hammerson.com Hammerson has its primary listing on the London Stock Exchange and secondary inward listings on the Johannesburg Stock Exchange and Euronext Dublin. Sponsor: Investec Bank Limited Date: 11-12-2024 09:00:00 Produced by the JSE SENS Department. The SENS service is an information dissemination service administered by the JSE Limited ('JSE'). The JSE does not, whether expressly, tacitly or implicitly, represent, warrant or in any way guarantee the truth, accuracy or completeness of the information published on SENS. The JSE, their officers, employees and agents accept no liability for (or in respect of) any direct, indirect, incidental or consequential loss or damage of any kind or nature, howsoever arising, from the use of SENS or the use of, or reliance on, information disseminated through SENS.