ASM International N.V. — M&A Activity 2018

Sep 28, 2018

Almere, The Netherlands September 28, 2018

ASM INTERNATIONAL RESPONDS TO MARKET RUMOURS REGARDING INTEREST FOR ITS STAKE IN ASM-PT

ASM International N.V. (Euronext Amsterdam: ASM) today has noted rumours in the market that third parties are preparing an offer for ASMI's stake of approximately 25% in ASM Pacific Technology Ltd. ("ASMPT")

As stated by ASMI on prior occasions ASMI's interest in ASMPT is of strategic value to ASMI. Nonetheless, ASMI has been approached from time to time by parties with an interest to explore the acquisition of ASMI's stake in ASMPT.

In line with its fiduciary duties it is ASMI's policy to carefully review and assess expressions of interest for its stake in ASMPT by third parties and to occasionally engage with such parties. However, at this point in time there is no ongoing process with respect to a potential sale of part or all of ASMI's stake in ASMPT.

About ASM International

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

Cautionary Note Regarding Forward-Looking Statements: All matters discussed in this press release, 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, corporate transactions, financing and liquidity matters, the success of restructurings, the timing of significant orders, market acceptance of new products, competitive factors, litigation involving intellectual property, shareholders or 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 reports and financial statements. The Company assumes no obligation nor intends to update or revise any forwardlooking statements to reflect future developments or circumstances.

This press release contains inside information within the meaning of Article 7(1) of the EU Market Abuse Regulation.

CONTACT

Investor contact: Victor Bareño T: +31 88 100 8500 E: victor.bareno@asm.com

Media contact: Ian Bickerton T: +31 625 018 512