IBA – ACQUISITION OF OWN SHARES

Louvain-la-Neuve, Belgium, February 16^th, 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 2^nd, 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 30^th, 2026 (included), effective as from February 3^rd, 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 26,054 IBA shares on Euronext Brussels in the period from February 9^th, 2026, up to and including February 13^th, 2026, as follows:

Trade date	Shares purchased	Average price	Min price	Max price	Buyback amount
09-02-26	6,054	14.88 €	14.80 €	15.20 €	90,065.36 €
10-02-26	5,000	15.20 €	14.86 €	15.30 €	76,023.50 €
11-02-26	5,000	15.22 €	15.12 €	15.32 €	76,086.00 €
12-02-26	5,000	15.37 €	15.26 €	15.50 €	76,866.00 €
13-02-26	5,000	15.38 €	15.20 €	15.42 €	76,886.50 €
TOTAL	26,054	15.20 €	14.80 €	15.50 €	395,927.36 €

The total number of shares purchased under this program therefore amounts to 42,665 since this is the second 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		948,394	1,014,817
Total – Treasury shares		1,000,367	1,118,763
Total - Issued shares		30,282,218	40,514,366
Treasury shares in %		3.30%	2.76%

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 person

IBA
Thomas Pevenage,
Investor Relations
[e-mail]

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• 20260216-Acquisition-Own-Shares-EN