Notification of Major Interests in Shares Mondi plc (Incorporated in England and Wales) (Registered number: 6209386) LEI: 213800LOZA69QFDC9N34 LSE share code: MNDI ISIN: GB00BMWC6P49 JSE share code: MNP 1 August 2025 Notification of Major Interests in Shares 1. Issuer Details ISIN GB00BMWC6P49 Issuer Name MONDI 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 Ninety One SA (Pty) Ltd City of registered office (if applicable) Country of registered office (if applicable) ZA 4. Details of the shareholder 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 31-Jul-2025 6. Date on which Issuer notified 01-Aug-2025 7. Total positions of person(s) subject to the notification obligation % of voting % of voting rights through Total of both Total number of rights attached financial . in % (8.A + voting rights to shares (total instruments 8.B) held in issuer of 8.A) (total of 8.B 1 + 8.B 2) Resulting situation on the date on which 4.614545 0.014731 4.629276 20434210 threshold was crossed or reached Position of previous 5.219200 0.015600 5.234800 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) GB00BMWC6P49 20369184 4.614545 Sub Total 8.A 20369184 4.614545% 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 Expiration Exercise/conversion Physical or cash Number of % of voting financial date period settlement voting rights rights instrument CFD anytime Cash 65026 0.014731 Sub Total 8.B2 65026 0.014731% 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 rights through financial Total of both if it Name of if it equals or is Ultimate instruments if it equals or is higher controlled higher than the controlling person equals or is higher than the notifiable undertaking notifiable than the notifiable threshold threshold threshold Ninety One Ninety One Africa 0.000000 0.000000 0.000000% Limited (Pty) Limited Ninety Ninety One One SA Africa (Pty) 4.251975 0.000000 4.251975% (Pty) Limited Limited Ninety Ninety One One 0.000000 0.000000 0.000000% Plc Global Ltd Ninety Ninety One One UK 0.000000 0.000000 0.000000% Global Ltd Holdings Ltd Ninety One Ninety UK Holdings One UK 0.377301 0.000000 0.377301% Ltd Limited 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 01-Aug-2025 13. Place Of Completion London Sponsor in South Africa: Merrill Lynch South Africa (Pty) Ltd t/a BofA Securities Date: 01-08-2025 04:00:00 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.