Erratum: Correction of press release published on April 7th, 2026
The press release published on April 7th, related to the acquisition of own shares, contained the following errors:
- In the third paragraph, the number of repurchased shares shall read “32,000” instead of “16,000”;
- In the fifth paragraph, the number of total number of shares purchased under this program shall read “117,188” instead of “101,188”.
As a result, the correct version shall read as follows:
IBA – ACQUISITION OF OWN SHARES
Louvain-la-Neuve, Belgium, April 9th, 2026 – 6 PM CET – In accordance with article 8:4 of the Royal Decree of 29 April 2019 executing the Belgian Code on Companies and Associations, Ion Beam Applications SA (“IBA”) hereby discloses information in relation to its share buyback program announced on February 2nd, 2026.
Under this program, IBA has requested a financial intermediary to repurchase up to 400,000 IBA ordinary shares on its behalf under the terms of a mandate with validity until September 30th, 2026 (included), effective as from February 3rd, 2026, to cover the company’s obligations under long-term incentive plans for management and certain members of its personnel.
In the framework of this share buyback program, IBA repurchased 32,000 IBA shares on Euronext Brussels in the period from March 30th, 2026, up to and including April 3th, 2026, as follows:
| Trade date | Shares purchased | Average price | Min price | Max price | Buyback amount |
| 30-03-26 | 8,000 | € 12.74 | € 12.64 | € 12.86 | € 101,945.60 |
| 31-03-26 | 8,000 | € 12.99 | € 12.70 | € 13.12 | € 103,937.60 |
| 01-04-26 | 8,000 | € 13.09 | € 13.00 | € 13.12 | € 104,736.00 |
| 02-04-26 | 8,000 | € 12.67 | € 12.58 | € 12.82 | € 101,329.60 |
| TOTAL | 32,000 | € 12.87 | € 12.58 | € 13.12 | € 411,948.80 |
The total number of shares purchased under this program therefore amounts to 117,188 since this is the sixth week of execution. As a result, the current situation with respect to treasury shares (held directly by IBA SA and indirectly through its subsidiary IBA Investments SRL) after also taking into consideration recent movements resulting from the exercise of stock options, is the following :
| Shares | Voting rights | ||
| IBA Investments SRL | 51,973 | 103,946 | |
| IBA SA | 999,627 | 1,066,050 | |
| Total - Treasury shares | 1,051,600 | 1,169,996 | |
| Total - Issued shares | 30,282,218 | 40,514,366 | |
| Treasury shares in % | 3.47% | 2.89% | |
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 2,300 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: -worldwide.com
Contact person
IBA
Thomas Pevenage,
Investor Relations
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