ALMERE, The Netherlands - October 7, 2012 - ASM International N.V. (NASDAQ: ASMI and NYSE Euronext Exchange in Amsterdam: ASM) announces that it will exercise its right to redeem all outstanding 6.5% senior unsecured convertible bonds (the "Bonds") on November 27, 2012 at their principal amount, together with accrued but unpaid interest. The relevant notifications to the bondholders will be sent on Monday October 8, 2012.

Bondholders may exercise their right to convert their Bonds into ordinary shares ultimately on November 20, 2012.

As of 5 October 2012 the aggregate principal amount of Bonds outstanding is €150 million. The conversion price is € 16.53.

For any questions relating to the Bonds, bondholders may contact Citibank, N.A. London Branch as Registrar, and Principal Paying, Conversion and Transfer Agent at the following details:
Citibank, N.A., London Branch

Att.: Agency & Trust

Citigroup Centre

33 Canada Square

Canary Wharf

London E14 5LB

United Kingdom

corporateaction.instruction@citi.com

About ASM International

ASM International N.V., headquartered in Almere, the Netherlands, and its subsidiaries design and manufacture equipment and materials used to produce semiconductor devices. ASM International and its subsidiaries provide production solutions for wafer processing (Front-end segment) as well as assembly and packaging (Back-end segment) through facilities in the United States, Europe, Japan and Asia. ASM International's common stock trades on NASDAQ (symbol ASMI) and the Euronext Amsterdam Stock Exchange (symbol ASM). For more information, visit ASMI's website at www.asm.com