TR-1: Standard form for notification of major holdings Hammerson plc (Incorporated in England and Wales) (Company number 360632) LSE and Euronext Dublin share code: HMSO JSE share code: HMN ISIN: GB00BK7YQK64 (“Hammerson” or “the Company”) This notification has been received by Hammerson Plc pursuant to the relevant shareholder's obligations pursuant to applicable UK law. TR-1: Standard form for notification of major holdings 1. Issuer Details ISIN GB00BK7YQK64 Issuer Name HAMMERSON PLC UK or Non-UK Issuer UK 2. Reason for Notification An acquisition or disposal of voting rights 3. Details of person subject to the notification obligation Name APG Asset Management N.V. City of registered office (if applicable) Amsterdam Country of registered office (if applicable) Netherlands 4. Details of the shareholder Full name of shareholder(s) if different from the person(s) subject to the notification obligation, above City of registered office (if applicable) Country of registered office (if applicable) 5. Date on which the threshold was crossed or reached 03-Mar-2023 6. Date on which Issuer notified 06-Mar-2023 7. Total positions of person(s) subject to the notification obligation % of voting % of voting rights through Total number of rights attached financial Total of both in . voting rights held to shares (total instruments % (8.A + 8.B) in issuer of 8.A) (total of 8.B 1 + 8.B 2) Resulting situation on the date on which 19.971045 0.000000 19.971045 997468698 threshold was crossed or reached Position of previous 20.946355 0.000000 20.946355 notification (if applicable) 8. Notified details of the resulting situation on the date on which the threshold was crossed or reached 8A. Voting rights attached to shares Number of Class/Type of Number of direct % of indirect indirect voting % of direct voting shares ISIN code(if voting rights voting rights rights rights (DTR5.1) possible) (DTR5.1) (DTR5.2.1) (DTR5.2.1) GB00BK7YQK64 997468698 19.971045 Sub Total 8.A 997468698 19.971045% 8B1. Financial Instruments according to (DTR5.3.1R.(1) (a)) Number of voting rights that may % of Type of financial Expiration Exercise/conversion be acquired if the instrument is voting instrument date period exercised/converted rights Sub Total 8.B1 8B2. Financial Instruments with similar economic effect according to (DTR5.3.1R.(1) (b)) Type of % of Expiration Exercise/conversion Physical or cash Number of financial voting date period settlement voting rights instrument rights Sub Total 8.B2 9. Information in relation to the person subject to the notification obligation 1. Person subject to the notification obligation is not controlled by any natural person or legal entity and does not control any other undertaking(s) holding directly or indirectly an interest in the (underlying) issuer. % of voting % of voting rights Total of both if it Name of rights if it equals through financial equals or is Ultimate controlled or is higher than instruments if it equals higher than the controlling person undertaking the notifiable or is higher than the notifiable threshold notifiable threshold threshold 10. In case of proxy voting Name of the proxy holder The number and % of voting rights held The date until which the voting rights will be held 11. Additional Information 12. Date of Completion 06-Mar-2023 13. Place Of Completion Sittard For further information contact: Emma Jackman Senior Assistant Company Secretary Tel: +44 (0)20 7887 1000 6 March 2023 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: 06-03-2023 05:30:00 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.