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 Morgan Stanley City of registered office (if applicable) Country of registered office (if applicable) US Name City of registered office Country of registered office Morgan Stanley Wilmington, Delaware USA 4. Details of the shareholder City of registered Country of registered Name office office Morgan Stanley & Co. London UNITED KINGDOM International plc 5. Date on which the threshold was crossed or reached 07-Sep-2021 6. Date on which Issuer notified 09-Sep-2021 7. Total positions of person(s) subject to the notification obligation % of voting % of voting rights Total of both Total number of rights attached through financial . in % (8.A + voting rights held to shares (total instruments (total 8.B) in issuer of 8.A) of 8.B 1 + 8.B 2) Resulting situation on the date on which 5.956842 2.449156 8.405998 353366943 threshold was crossed or reached Position of previous 6.042097 2.322649 8.364746 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 Class/Type of Number of Number of indirect % of direct % of indirect shares ISIN code(if direct voting voting rights voting rights voting rights possible) rights (DTR5.1) (DTR5.2.1) (DTR5.1) (DTR5.2.1) GB00BK7YQK64 250410437 5.956842 Sub Total 8.A 250410437 5.956842% 8B1. Financial Instruments according to (DTR5.3.1R.(1) (a)) Number of voting rights that may be Type of financial Exercise/conversion % of voting Expiration date acquired if the instrument period rights instrument is exercised/converted Right of recall over securities at any at any time 1892121 0.045010 lending time agreements Sub Total 8.B1 1892121 0.045010% 8B2. Financial Instruments with similar economic effect according to (DTR5.3.1R.(1) (b)) Type of Physical or Exercise/conversion Number of % of voting financial Expiration date cash period voting rights rights instrument settlement Equity 11/10/2021 at any time Cash 115000 0.002735 Swap Equity 29/10/2021 at any time Cash 3467560 0.082487 Swap Equity 06/12/2021 at any time Cash 23088794 0.549243 Swap Equity 21/12/2021 at any time Cash 4454348 0.105961 Swap Equity 10/01/2022 at any time Cash 1618054 0.038490 Swap Equity 12/08/2022 at any time Cash 2636866 0.062726 Swap Equity 30/08/2022 at any time Cash 160000 0.003806 Swap Equity 23/01/2023 at any time Cash 35487503 0.844187 Swap Equity 07/09/2023 at any time Cash 1363462 0.032434 Swap Equity 19/12/2024 at any time Cash 28672798 0.682077 Swap Sub Total 8.B2 101064385 2.404146% 9. Information in relation to the person subject to the notification obligation 2. Full chain of controlled undertakings through which the voting rights and/or the financial instruments are effectively held starting with the ultimate controlling natural person or legal entities (please add additional rows as necessary) % of voting rights % of voting through financial Total of both if it rights if it equals Ultimate Name of controlled instruments if it equals or is higher or is higher than controlling person undertaking equals or is higher than the notifiable the notifiable than the notifiable threshold threshold threshold Morgan Stanley (chain 0.000000% 1) Morgan Morgan Stanley Stanley (chain Capital 0.000000% 1) Management, LLC Morgan Morgan Stanley 0.000000% Stanley (chain Domestic 1) Holdings, Inc. Morgan Morgan Stanley 0.000000% Stanley (chain Capital 1) Services LLC Morgan Stanley (chain 0.000000% 2) Morgan Morgan 0.000000% Stanley (chain Stanley 2) Capital Management, LLC Morgan Morgan Stanley 0.000000% Stanley (chain Domestic 2) Holdings, Inc. Morgan Morgan Stanley (chain Stanley & Co. 0.000000% 2) LLC Morgan Stanley (chain 0.000000% 3) Morgan Morgan Stanley 0.000000% Stanley (chain International 3) Holdings Inc. Morgan Morgan Stanley 0.000000% Stanley (chain International 3) Limited Morgan Morgan Stanley 0.000000% Stanley (chain Investments 3) (UK) Morgan Morgan Stanley & Co. 5.956842 1.562329 7.519172% Stanley (chain International 3) plc Morgan Stanley (chain 4) Morgan Morgan Stanley 0.000000% Stanley (chain International 4) Holdings Inc. Morgan Morgan Stanley 0.000000% Stanley (chain International 4) Limited Morgan Morgan Stanley 0.000000% Stanley (chain Europe 4) Holding SE Morgan Morgan Stanley (chain Stanley 0.000000% 4) Europe SE 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 Of the total voting rights attached to shares in Section 8A, 250,410,437 (5.956842%) of these are the result of stock borrowing agreements. 12. Date of Completion 09-Sep-2021 13. Place Of Completion Glasgow For further information contact: Emma Jackman Senior Assistant Company Secretary Tel: +44 (0)20 7887 1000 10 September 2021 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: 10-09-2021 11:30:00 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. 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