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 financial instruments 3. Details of person subject to the notification obligation Name Lighthouse Properties plc City of registered office (if applicable) Sliema Country of registered office (if applicable) Malta 4. Details of the shareholder City of registered Country of registered Name office office Lighthouse Netherlands B.V. Lighthouse Investments Netherlands B.V. Lighthouse Netherlands Two B.V 5. Date on which the threshold was crossed or reached 15-Dec-2023 6. Date on which Issuer notified 19-Dec-2023 7. Total positions of person(s) subject to the notification obligation % of voting % of voting rights through Total number of rights attached financial Total of both in voting rights to shares (total instruments % (8.A + 8.B) held in issuer of 8.A) (total of 8.B 1 + 8.B 2) Resulting situation on the date on which 16.950000 0.000000 16.950000 846594294 threshold was crossed or reached Position of previous 17.980000 0.000000 17.980000 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 Number of direct % of indirect indirect voting % of direct voting shares ISIN code(if voting rights voting rights rights rights (DTR5.1) possible) (DTR5.1) (DTR5.2.1) (DTR5.2.1) GB00BK7YQK64 846594294 16.950000 Sub Total 8.A 846594294 16.950000% 8B1. Financial Instruments according to (DTR5.3.1R.(1) (a)) Number of voting rights that % of Type of financial Expiration Exercise/conversion may be acquired if the voting instrument date period 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 % of Expiration Exercise/conversion Physical or cash Number of financial voting date period settlement voting rights instrument rights Sub Total 8.B2 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 through % of voting rights financial Total of both if it if it equals or is Ultimate Name of controlled instruments if equals or is higher higher than the controlling person undertaking it equals or is than the notifiable notifiable higher than the threshold threshold notifiable threshold Lighthouse Lighthouse Properties Properties 16.950000 16.950000% plc plc Lighthouse Lighthouse Properties Properties 16.950000 16.950000% plc One Limited Lighthouse Lighthouse Properties Netherlands 4.780000 4.780000% plc B.V. Lighthouse Lighthouse Investments Properties 5.840000 5.840000% Netherlands plc B.V. Lighthouse Lighthouse Properties Netherlands 6.330000 6.330000% plc Two B.V. 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 19-Dec-2023 13. Place Of Completion Amsterdam For further information contact: Richard Crowle Senior Assistant Company Secretary Tel: +44 (0)20 7887 1000 19 December 2023 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