Ad hoc announcement Miscellaneous Cancellation of treasury shares Ad hoc announcement transmitted by DGAP - a company of EquityStory AG. The issuer is solely responsible for the content of this announcement. ------------------------------------------------------------------------------ The Management Board and the Supervisory Board of Mayr-Melnhof Karton AG will propose to the 16th Ordinary Shareholders' Meeting, held on April 28, 2010, a simplified reduction of the Company's share capital by EUR 8,000,000 to EUR 80,000,000 via cancellation of 2 million treasury shares. The purpose of this capital decrease is a reduction in the number of treasury shares. Of 22 million issued shares 2,015,260 shares (9.16 %) are currently held by the company as treasury stock. --------------------------------------------------------------------------- Information and Explaination of the Issuer to this News: For further information please contact: Stephan Sweerts-Sporck, Investor Relations, Mayr-Melnhof Karton AG, Brahmsplatz 6, A-1041 Vienna Tel.: (+43/1) 50136 - 91180, Fax: (+43/1) 50136 - 91195 e-mail: investor.relations@mm-karton.com, Website: http://www.mayr-melnhof.com (c)DGAP 23.03.2010 --------------------------------------------------------------------------- Language: English Company: Mayr-Melnhof Karton AG Brahmsplatz 6 1040 Wien Österreich Phone: 0043 1 501 36 91180 Fax: 0043 1 501 36 91391 E-mail: investor.relations@mm-karton.com Internet: www.mayr-melnhof.com ISIN: AT0000938204 WKN: 93820 Indices: ATX Listed: Freiverkehr in Berlin, München, Stuttgart; Open Market in Frankfurt; Foreign Exchange(s) Wien End of News DGAP News-Service ---------------------------------------------------------------------------