Exhibit 99.1

                                                                                                                                                                                                        

ASM International N.V.

ASM International NASDAQ notification

Almere, The Netherlands – April 6, 2009 – ASM International N.V. (Nasdaq: ASMI and Euronext Stock Exchange in Amsterdam: ASM) today announced that on March 31, 2009, it received a notice from The Nasdaq Stock Market of noncompliance with Marketplace Rule 4350(d) regarding the composition of the audit committee of the Company’s Supervisory Board. This noncompliance arose from the fact that the Audit Committee of the Supervisory Board temporarily is composed of two members in stead of three as formally required by the Nasdaq rules.

Under the Nasdaq Marketplace Rules, the Company has until September 8, 2009 to restore the Audit Committee to three members. However the Company expects that the Audit Committee will be restored to three members well before this deadline.

This press release has been issued as required by Nasdaq Marketplace Rule 4803.

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.

Safe Harbor Statement under the U.S. Private Securities Litigation Reform Act of 1995: All matters discussed in this statement, except for any historical data, are forward-looking statements. Forward-looking statements involve risks and uncertainties that could cause actual results to differ materially from those in the forward-looking statements. These include, but are not limited to, economic conditions and trends in the semiconductor industry generally and the timing of the industry cycles specifically, currency fluctuations, financing and liquidity matters, the success of restructurings, the timing of significant orders, market acceptance of new products, competitive factors, litigation involving intellectual property, shareholder and other issues, commercial and economic disruption due to natural disasters, terrorist activity, armed conflict or political instability, epidemics and other risks indicated in the Company’s filings from time to time with the U.S. Securities and Exchange Commission, including, but not limited to, the Company’s reports on Form 20-F and Form 6-K. The Company assumes no obligation nor intends to update or revise any forward-looking statements to reflect future developments or circumstances.

For further information, please contact:

Investor contacts

Mary Jo Dieckhaus

Tel: +1 212 986 2900

MaryJo.Dieckhaus@asm.com

Erik Kamerbeek

Tel: +31 881 008 500

Mobile: +31 653 492 120

Erik.kamerbeek@asm.com

Media contact

Ian Bickerton

Tel +31 20 6855 955

Mobile +31 625 018 512