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: GB00BK7YQK64 Hammerson plc (the “Company”) TRANSACTION IN OWN SHARES Hammerson plc (the “Company”) announces that, in accordance with the terms of its share repurchase programme announced on 6 December 2021, the Company 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 6 December 2021. Date of purchase: 8 December 2021 Number of ordinary shares purchased: 2,112,888 Highest price paid per share (pence): 33.50 Lowest price paid per share (pence): 32.40 Volume weighted average price paid 33.16 per share (pence): The Company intends to hold the purchased shares in treasury. Since 6 December 2021, the Company has purchased 2,952,962 shares at a cost (including dealing and associated costs) of £979,417.77. Following the purchase of these shares, the Company holds 2,952,962 of its ordinary shares in treasury and has 4,416,504,199 ordinary shares in issue (excluding treasury shares). A full breakdown of the individual trades made by Morgan Stanley & Co. International plc on behalf of the Company as part of the share repurchase programme is attached to this document. http://www.rns-pdf.londonstockexchange.com/rns/0459V_1-2021-12-8.pdf 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 and Investor Relations Tel: +44 20 7887 1053 josh.warren@hammerson.com Hammerson has its primary listing on the London Stock Exchange and secondary inward listings on the Johannesburg Stock Exchange and Euronext Dublin. 9 December 2021 Sponsor: Investec Bank Limited Date: 09-12-2021 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.