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 This notification has been received by Hammerson Plc pursuant to the relevant shareholder's obligations pursuant to applicable UK law. 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 Wellington Management Group LLP City of registered office (if applicable) Country of registered office (if applicable) US 4. Details of the shareholder City of registered Country of registered Name office office State Street Nominees Limited JP Morgan Chase Nominees Limited VIDACOS NOMINEES LIMITED 5. Date on which the threshold was crossed or reached 22-Aug-2024 6. Date on which Issuer notified 23-Aug-2024 7. Total positions of person(s) subject to the notification obligation % of voting % of voting rights Total of Total number of rights attached through financial both in % voting rights held to shares (total instruments (total (8.A + 8.B) in issuer of 8.A) of 8.B 1 + 8.B 2) Resulting situation on the date on which 5.350000 0.070000 5.420000 270178032 threshold was crossed or reached Position of previous 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 266759704 5.350000 Sub Total 8.A 266759704 5.350000% 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 Sub Total 8.B1 8B2. Financial Instruments with similar economic effect according to (DTR5.3.1R.(1) (b)) Type of Exercise/conversion Physical or cash Number of % of voting financial Expiration date period settlement voting rights rights instrument Equity 05/05/2028 Cash 3150070 0.060000 Swap Equity 20/05/2033 Cash 268258 0.010000 Swap Sub Total 8.B2 3418328 0.070000% 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 the equals or is higher than the notifiable notifiable than the notifiable threshold threshold threshold Wellington Wellington Management Management 5.346682 5.415195% Group LLP Group LLP (Chain 1) Wellington Wellington Management Group Holdings 5.346682 5.415195% Group LLP LLP (Chain 1) Wellington Wellington Management Investment 5.346682 5.415195% Group LLP Advisors (Chain 1) Holdings LLP Wellington Wellington Management Management Group LLP Company LLP (Chain 1) Wellington Wellington Management Management 5.346682 5.415195% Group LLP Group LLP (Chain 2) Wellington Wellington Management Group Holdings 5.346682 5.415195% Group LLP LLP (Chain 2) Wellington Wellington Management Investment 5.346682 5.415195% Group LLP Advisors (Chain 2) Holdings LLP Wellington Wellington Management Management Group LLP Global (Chain 2) Holdings, Ltd. Wellington Wellington Management Management Group LLP International (Chain 2) Ltd 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 12. Date of Completion 23-Aug-2024 13. Place Of Completion Boston, MA USA For further information contact: Kim Panisales Assistant Company Secretary Tel: +44 (0)20 7887 1000 27 August 2024 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: 27-08-2024 03:30:00 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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