ASM International N.V.

Transaction in Own Shares • Jun 10, 2025

Almere, The Netherlands June 9, 2025, 5:45 p.m. CET

ASM share buyback update June 2 – 6, 2025

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

Date	Repurchased	Average price	Repurchased
	shares		value
June 2, 2025	11,607	€ 471.98	€ 5,478,314
June 3, 2025	4,528	€ 482.57	€ 2,185,065
Total	16,135	€ 474.95	€ 7,663,379

These repurchases were made as part of the €150 million share buyback program which started on April 30, 2025. Of the total program, 26.1% 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

Investor relations Valentina Fantigrossi T: +31 88 100 8502 E: investor.relations@asm.com