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 12-Apr-2021 6. Date on which Issuer notified 14-Apr-2021 7. Total positions of person(s) subject to the notification obligation Total % of voting % of voting rights number of rights attached to through financial Total of both in . voting shares (total of instruments (total % (8.A + 8.B) rights held 8.A) of 8.B 1 + 8.B 2) in issuer Resulting situation on the date on which 0.000000 0.000000 0.000000 0 threshold was crossed or reached Position of previous 1.876696 3.196762 5.073458 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 % OF DIRECT NUMBER OF NUMBER OF % OF INDIRECT SHARES ISIN VOTING DIRECT VOTING INDIRECT VOTING VOTING RIGHTS CODE(IF RIGHTS RIGHTS (DTR5.1) RIGHTS (DTR5.2.1) (DTR5.2.1) POSSIBLE) (DTR5.1) GB00BK7YQK64 0 0.000000 Sub Total 8.A 0 0.000000% 8B1. Financial Instruments according to (DTR5.3.1R.(1) (a)) NUMBER OF VOTING TYPE OF RIGHTS THAT MAY BE % OF EXPIRATION EXERCISE/CONVERSION FINANCIAL ACQUIRED IF THE VOTING DATE PERIOD INSTRUMENT INSTRUMENT IS RIGHTS EXERCISED/CONVERTED Sub Total 8.B1 8B2. Financial Instruments with similar economic effect according to (DTR5.3.1R.(1) (b)) TYPE OF PHYSICAL OR NUMBER OF % OF EXPIRATION EXERCISE/CONVERSION FINANCIAL CASH VOTING VOTING DATE PERIOD INSTRUMENT SETTLEMENT RIGHTS 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 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 12. Date of Completion 14-Apr-2021 13. Place Of Completion Glasgow For further information contact: Emma Jackman Senior Assistant Company Secretary Tel: +44 (0)20 7887 1000 15 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: 15-04-2021 10:30:00 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.