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 20-Aug-2021 6. Date on which Issuer notified 24-Aug-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 6.042097 2.322649 8.364746 351632541 threshold was crossed or reached Position of previous 5.999792 2.325938 8.325730 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 voting shares ISIN code(if direct voting voting rights voting rights rights (DTR5.2.1) possible) rights (DTR5.1) (DTR5.2.1) (DTR5.1) GB00BK7YQK64 253994332 6.042097 Sub Total 8.A 253994332 6.042097% 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 0.002736 Swap Equity 29/10/2021 at any time Cash 3350800 0.079710 Swap Equity 06/12/2021 at any time Cash 23088794 0.549244 Swap Equity 21/12/2021 at any time Cash 4454348 0.105961 Swap Equity 12/08/2022 at any time Cash 576845 0.013722 Swap Equity 23/01/2023 at any time Cash 35487503 0.844188 Swap Equity 19/12/2024 at any time Cash 28672798 0.682078 Swap Sub Total 8.B2 95746088 2.277639% 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 Total of both if it through financial rights if it equals equals or is Ultimate Name of controlled instruments if it or is higher than higher than the controlling person undertaking equals or is higher the notifiable notifiable than the notifiable threshold threshold threshold Morgan Stanley (chain 0.000000 1) Morgan Stanley Capital 0.000000 Management, LLC Morgan Stanley 0.000000 Domestic Holdings, Inc. Morgan Stanley Capital 0.000000 Services LLC Morgan Stanley (chain 0.000000 2) Morgan Stanley Capital 0.000000 Management, LLC Morgan Stanley 0.000000 Domestic Holdings, Inc. Morgan Stanley & Co. 0.000000 LLC Morgan Stanley (chain 0.000000 3) Morgan Stanley 0.000000 International Holdings Inc. Morgan Stanley 0.000000 International Limited Morgan Stanley 0.000000 Investments (UK) Morgan Stanley & Co. 6.042097 1.488626 7.530723 International plc 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, 253,994,332 (6.042097%) of these are the result of stock borrowing agreements. 12. Date of Completion 24-Aug-2021 13. Place Of Completion Glasgow For further information contact: Emma Jackman Senior Assistant Company Secretary Tel: +44 (0)20 7887 1000 25 August 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: 25-08-2021 11:00:00 Produced by the JSE SENS Department. The SENS service is an information dissemination service administered by the JSE Limited ('JSE'). 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