ASM International N.V. announces exercise of over-allotment option

Almere, NETHERLANDS


BILTHOVEN, THE NETHERLANDS, April 11, 2000 - ASM International N.V. (Nasdaq and AEX: ASMI) announces that its Underwriters have exercised their option to purchase 750,000 additional common shares to cover over-allotments. The number of shares offered by ASM International totals 4,250,000, including the over-allotment option and 1,500,000 shares are offered by Applied Materials Inc., as Selling Shareholder. The public offering price was set at $ 29.00 (€ 30.27) per share.

The shares are being offered by an underwriting group lead by CIBC World Markets and co-managed by Robertson Stephens and Warburg Dillon Read LLC. Rabo Securities acts as listing agent in the Netherlands.

A registration statement relating to these securities has been filed with the Securities and Exchange Commission and has been declared effective. This offering will be made only by means of a prospectus. A copy of the final prospectus, which is in the English language, can be obtained from CIBC World Markets, Syndicate Department, 200 Liberty Street, One World Financial Center, New York, NY 10281 and in the Netherlands from Rabo Securities N.V., Rembrandt Tower, Amstelplein 1, P.O. Box 94640, 1090 GP Amsterdam.

About ASM


ASM International is headquartered in Bilthoven, the Netherlands. ASM International's subsidiaries design, develop, manufacture and market equipment and materials used to produce semiconductor devices. ASM International and its subsidiaries provide production solutions for the wafer-processing, assembly and packaging segments through their facilities in the United States, Europe, Japan and Asia. ASM International's common shares trade on the NASDAQ National Market under the symbol “ASMI” and on the Euronext Stock Exchange in Amsterdam under the symbol “ASM.” More information on ASM can be found on its website at http://www.asm.com

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Safe Harbor Statement under the U.S. Private Securities Litigation Reform Act of 1995: The statements regarding orders, earnings development and the effects of research and new products on ASM’s future, and other 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 in the semiconductor industry, currency fluctuations, the timing of significant orders, market acceptance of new products, competitive factors, risk factors related to litigation and other risks indicated in filings from time to time with the SEC and Stock Exchange Authorities.