ASM share buyback update May 8 – 12, 2023

Almere, The Netherlands
May 15, 2023, 5:45 p.m. CET

ASM International N.V. (Euronext Amsterdam: ASM) reports the following transactions, conducted under ASM's current share buyback program.

Date	Repurchased shares	Average price	Repurchased value
May 8, 2023	3,822	€ 342.15	€ 1,307,680
May 9, 2023	5,299	€ 337.34	€ 1,787,561
May 10, 2023	3,434	€ 337.48	€ 1,158,912
May 11, 2023	3,786	€ 340.33	€ 1,288,477
May 12, 2023	4,455	€ 340.24	€ 1,515,756
Total	20,796	€ 339.41	€ 7,058,386

These repurchases were made as part of the €100 million share buyback program which started on April 27, 2023. Of the total program,14.9% has been repurchased. For further details including individual transaction information please visit: www.asm.com/investors/dividends-share-buybacks.

About ASM International

ASM International N.V., headquartered in Almere, the Netherlands, and its subsidiaries design and manufacture equipment and process solutions to produce semiconductor devices for wafer processing, and have facilities in the United States, Europe, and Asia. ASM International's common stock trades on the Euronext Amsterdam Stock Exchange (symbol: ASM). For more information, visit ASM's website at www.asm.com.

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

Contact

Investor and media relations

Victor Bareño
T: +31 88 100 8500
E: investor.relations@asm.com

Attachment

• 20230515 ASM share buyback update May 8 - 12 2023