IBA – Share buyback

02 Feb 2026 18:00 CET

Issuer

ION BEAM APPLICATIONS S.A.

Louvain-la-Neuve, Belgium, February 2^nd, 2026 – 6PM CET – IBA (Ion Beam Applications S.A., EURONEXT), the world leader in particle accelerator technology, announces today the launch of a share buyback program, effective as of February 3^rd, 2026, in application of article 7:215 of the Belgian Companies and Associations Code.

By a decision of the Board of Directors of March 18^th, 2025, approving the Stock Option Plan 2025, and pursuant to the authorization given by the EGM of September 4^th, 2023, IBA launched a program to buy back own shares through a mandate given to a market intermediary. This program covers a maximum of 400,000 ordinary shares and, depending on market conditions, will be executed over a fixed period of time from February 3^rd, 2026, to September 30^th, 2026 (included). Its objective is to cover the company’s obligation of shares delivery as part of long-term incentive plans granted to management and certain employees in the form of stock options.

IBA will continuously monitor its current and future obligations under its incentive plans in order to maintain an adequate level of treasury shares.

The number of treasury shares held directly and indirectly by IBA SA amounted to 958,952 on February 2^nd, 2026. The total number of IBA ordinary shares outstanding is 30,282,218.

About IBA

IBA (Ion Beam Applications S.A.) is the world leader in particle accelerator technology. The company is the leading supplier of equipment and services in the fields of proton therapy, considered as one of the most advanced forms of radiation therapy available today, as well as industrial sterilization, radiopharmaceuticals and dosimetry. The company, based in Louvain-la-Neuve, Belgium, employs approximately 2,100 people worldwide. IBA is a certified B Corporation (B Corp) meeting the highest standards of verified social and environmental performance.

IBA is listed on the pan-European stock exchange EURONEXT (IBA: Reuters IBAB.BR and Bloomberg IBAB.BB). More information can be found at: www.iba-worldwide.com

Contact
IBA
Thomas Pevenage
Head of Investor Relations
investorrelations@iba-group.com

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