Revocation of proxy – independent proxy (Revocation of proxy independent proxy 2026)

As a shareholder of Mayr-Melnhof Karton Aktiengesellschaft, I/we herewith revoke the proxy I/we granted to

to represent me/us at the 32ndOrdinary Shareholders' Meeting of Mayr-Melnhof Karton Aktiengesellschaft, Vienna, Commercial Register No. 81906 a, starting at 10:00am, on Wednesday, April 29th, 2026.

(Name/company and address/registered office of the shareholder in block letters)

(Number of shares)

(Name of the bank where the securities account is held)

(Date, shareholder's personal signature or image of signature or corporate signature)