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? Yes 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 08-Apr-2021 6. Date on which Issuer notified 12-Apr-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 1.876696 3.196762 5.073458 205845343 threshold was crossed or reached Position of previous 5.789431 3.196755 8.986186 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 % OF DIRECT NUMBER OF INDIRECT % OF INDIRECT SHARES ISIN DIRECT VOTING VOTING VOTING RIGHTS VOTING RIGHTS CODE(IF RIGHTS RIGHTS (DTR5.2.1) (DTR5.2.1) POSSIBLE) (DTR5.1) (DTR5.1) GB00BK7YQK64 76143156 1.876696 Sub Total 8.A 76143156 1.876696% 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 3200611 0.078885 time lending agreements Sub Total 8.B1 3200611 0.078885% 8B2. Financial Instruments with similar economic effect according to (DTR5.3.1R.(1) (b)) TYPE OF EXPIRATION EXERCISE/CONVERSION PHYSICAL NUMBER OF % OF VOTING FINANCIAL DATE PERIOD OR CASH VOTING RIGHTS INSTRUMENT SETTLEMENT RIGHTS Equity 05/10/2021 at any time Cash 310428 0.007651 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 126501576 3.117877% 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 % of voting rights rights if it through financial Total of both if it Ultimate Name of controlled equals or is instruments if it equals or is higher Controlling Person undertaking higher than equals or is higher than the notifiable the notifiable than the notifiable threshold threshold threshold Morgan Stanley (chain 0.000000 1) Morgan Stanley Capital 0.000000 Management, LLC Morgan Stanley Domestic 0.000000 Holdings, Inc. Morgan Stanley Capital Services 0.000000 LLC Morgan Stanley (chain 0.000000 2) Morgan Stanley Capital 0.000000 Management, LLC Morgan Stanley 0.000000 Domestic Holdings, Inc. Morgan Stanley 0.000000 & Co. LLC Morgan Stanley (chain 0.000000 3) Morgan Stanley International 0.000000 Holdings Inc. Morgan Stanley International 0.000000 Limited Morgan Stanley Investments 0.000000 (UK) Morgan Stanley & Co. 0.000000 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, 76,143,156 (1.876696%) of these are the result of stock borrowing agreements. 12. Date of Completion 12-Apr-2021 13. Place Of Completion Glasgow For further information contact: Emma Jackman Senior Assistant Company Secretary Tel: +44 (0)20 7887 1000 13 April 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: 13-04-2021 01:15:00 Produced by the JSE SENS Department. The SENS service is an information dissemination service administered by the JSE Limited ('JSE'). 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