Mondi plc
  (Incorporated in England and Wales)
  (Registered number: 6209386)
  LEI: 213800LOZA69QFDC9N34
  LSE share code: MNDI      ISIN: GB00B1CRLC47
  JSE share code: MNP

  14 September 2023

  Notification of Major Interests in Shares

1. Issuer Details:

    ISIN: GB00B1CRLC47

    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: Public Investment Corporation Soc Limited

    City of registered office: Pretoria

    Country of registered office: South Africa

4. Details of the shareholder:

    Full name of shareholder(s) if different from the persons(s) subject to the
    notification obligation, above: N/A

    City of registered office: N/A

    Country of registered office: N/A

5. Date on which the threshold was crossed or reached:

    11 September 2023

6. Date on which Issuer notified:

    13 September 2023
        7. Total positions of person(s) subject to the notification obligation:

                            % of voting rights           % of voting rights   Total of both in %   Total number of
                           attached to shares             through financial      (8.A + 8.B)       voting rights held
                              (total of 8. A)            instruments (total                        in issuer
                                                          of 8.B 1 + 8.B 2)

Resulting situation
on the date on      10.042                           0.000000                 10.042               48,760,707
which threshold was
crossed or reached

Position of previous
notification (if         8.998                       0.000000                 8.998                N/A
applicable)


        8. Notified details of the resulting situation on the date which the threshold was
              crossed or reached:

        A: Voting rights attached to shares
Class/type of          No. of voting rights                          % of voting rights
shares
ISIN code (if          Direct                 Indirect               Direct                 Indirect
possible)              (DTR5.1)               (DTR5.2.1)             (DTR5.1)               (DTR5.2.1)


GB00B1CRLC47           48,760,707             N/A                    10.042                 N/A

Subtotal 8.A           48,760,707                                    10.042




        B1: Financial Instruments according to (DTR5.3.1.1 (a))

Type of financial        Expiration       Exercise/ Conversion          Number of voting rights        % of voting
instrument               date             Period                        that may be acquired if        rights
                                                                        the instrument is
                                                                        exercised/ converted.



N/A                      N/A              N/A                           N/A                            N/A
                                          Subtotal 8.B 1


       B2: Financial Instruments with similar economic effect according to (DTR5.3.1R.(1)
         (b))

Type of           Expiration        Exercise/         Physical or cash          Number of         % of voting
financial         date              Conversion        settlement                voting rights     rights
instrument                          Period


N/A               N/A               N/A               N/A                       N/A               N/A

                                                      Subtotal 8.B 2


       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
                                                        financial           Total of both if it
                                    rights if it equals
             Ultimate controlling                       instruments if it   equals or is higher
                                    or is higher than
             person                                     equals or is        than the notifiable
                                    the notifiable
                                                        higher than the     threshold
                                    threshold
                                                        notifiable
                                                        threshold
              Public Investment
              Corporation Soc         10.042               0.000000          10.042
              Limited



       10. In case of proxy voting:

              Name of the proxy holder: N/A

              The number and % of voting rights held: N/A

              The date until which the voting rights will be held: N/A

       11. Additional information: N/A
 12. Date of completion:

     13 September 2023

 13. Place of completion:

     Pretoria, South Africa

Sponsor in South Africa: Merrill Lynch South Africa (Pty) Ltd t/s BofA Securities