ContractShareholders’ Agreement • June 12th, 2012 • Schulman a Inc • Plastic materials, synth resins & nonvulcan elastomers • London
Exhibit 99.1 Dated 9 June 2012 A. SCHULMAN EUROPE INTERNATIONAL B.V.andNATIONAL PETROCHEMICAL INDUSTRIAL COMPANYandA. SCHULMAN, INC. SHAREHOLDERS’ AGREEMENT Linklaters LLP Ninth Floor Currency House Dubai International Financial Centre PO Box 506516 Dubai United Arab Emirates Telephone: (+971) 4 369 5800 Facsimile: (+971) 4 369 5801 Ref S Mewawalla/B Davies (L-198969)
