ASM share buyback update May 12 – 16, 2025

May 19, 2025, 5:45 p.m. CET ASM International N.V. (Euronext Amsterdam: ASM) reports the following transactions, conducted under ASM's current share buyback program.DateRepurchased sharesAverage priceRepurchased value May 12, 20252,126€ 481.32€ 1,023,285May 14, 2025816€ 492.00€ 401,473May 15, 20253,777€ 489.70€ 1,849,592May 16, 2025...

May 19, 2025, 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 12, 2025	2,126	€ 481.32	€ 1,023,285
May 14, 2025	816	€ 492.00	€ 401,473
May 15, 2025	3,777	€ 489.70	€ 1,849,592
May 16, 2025	3,246	€ 491.05	€ 1,593,937
Total	9,965	€ 488.54	€ 4,868,287

These repurchases were made as part of the €150 million share buyback program which started on April 30, 2025. Of the total program, 10.7% 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: [email protected]   Investor relations Valentina Fantigrossi T: +31 88 100 8502 E: [email protected]

Attachment

• 20250519_ASM Share Buyback Update May 12 - 16 2025