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”) 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 Is the shareholder the same as the person subject to the notification obligation, above? No 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 19-Mar-2021 6. Date on which Issuer notified 23-Mar-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 5.379021 3.177632 8.556653 347168939 threshold was crossed or reached Position of previous 5.815809 3.174954 8.990763 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 DIRECT NUMBER OF % OF DIRECT % OF INDIRECT SHARES ISIN VOTING INDIRECT VOTING VOTING RIGHTS VOTING RIGHTS CODE(IF RIGHTS RIGHTS (DTR5.2.1) (DTR5.1) (DTR5.2.1) POSSIBLE) (DTR5.1) GB00BK7YQK64 0 218242918 0.000000 5.379021 Sub Total 8.A 218242918 5.379021% 8B1. Financial Instruments according to (DTR5.3.1R.(1) (a)) NUMBER OF VOTING TYPE OF RIGHTS THAT MAY BE EXPIRATION EXERCISE/CONVERSION % OF VOTING FINANCIAL ACQUIRED IF THE DATE PERIOD RIGHTS INSTRUMENT INSTRUMENT IS EXERCISED/CONVERTED Right of recall over at any securities at any time 458979 0.011312 time lending agreements Sub Total 8.B1 458979 0.011312% 8B2. Financial Instruments with similar economic effect according to (DTR5.3.1R.(1) (b)) TYPE OF PHYSICAL NUMBER OF EXPIRATION EXERCISE/CONVERSION % OF VOTING FINANCIAL OR CASH VOTING DATE PERIOD RIGHTS INSTRUMENT SETTLEMENT RIGHTS Equity 05/10/2021 at any time Cash 310428 0.007651 Swap Equity 29/10/2021 at any time Cash 1965466 0.048443 Swap Equity 06/12/2021 at any time Cash 21925814 0.540404 Swap Equity 21/12/2021 at any time Cash 4229983 0.104256 Swap Equity 20/04/2022 at any time Cash 4674173 0.115204 Swap Equity 23/01/2023 at any time Cash 67400000 1.661204 Swap Equity 19/12/2024 at any time Cash 27961178 0.689158 Swap Sub Total 8.B2 128467042 3.166320% 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 0.000000 (chain 1) Morgan Stanley Capital 0.000000 Management, LLC Morgan Stanley 0.000000 Domestic Holdings, Inc. Morgan Stanley Capital 0.000000 Services LLC Morgan Stanley 0.000000 (chain 2) Morgan Stanley Capital 0.000000 Management, LLC Morgan 0.000000 Stanley Domestic Holdings, Inc. Morgan Stanley & Co. 0.000000 LLC Morgan Stanley 0.000000 (chain 3) Morgan Stanley 0.000000 International Holdings Inc. Morgan Stanley 0.000000 International Limited Morgan Stanley 0.000000 Investments (UK) Morgan Stanley & Co. 5.379021 0.588847 5.967868 International plc 10. In case of proxy voting Is there proxy voting? No 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, 218,242,918 (5.38%) of these are the result of stock borrowing agreements. 12. Date of Completion 23-Mar-2021 13. Place Of Completion Glasgow For further information contact: Emma Jackman Senior Assistant Company Secretary Tel: +44 (0)20 7887 1000 24 March 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: 24-03-2021 02:30:00 Produced by the JSE SENS Department. 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