November 7th, 2025 Publication made under article 15 of the law of May 2, 2007 relating to the disclosure of major holdings in issuers whose shares are admitted to trading on a regulated market and containing various provisions (Belgian Gazette 12.VI.2007) (hereinafter, the “Law”). Under this provision: « [...] the issuer publishes the total capital, the total number of securities conferring the right to vote and voting rights, as well as, by category, the number of securities conferring the right to vote ...

Core Insights - IBA hosted the Innovat'her event to encourage female students to explore careers in STEM, addressing the underrepresentation of women in these fields [1][2][3] Group 1: Event Overview - The Innovat'her event took place in Louvain-la-Neuve, Belgium, and welcomed 25 female students from secondary schools [2] - The initiative is part of IBA's broader efforts to promote diversity within its technical teams and reflects its commitment as a certified B Corp [2] Group 2: Objectives and Impact - The event aimed to inspire young women by showcasing the potential of STEM careers to innovate and create positive societal impact [3] - IBA's Head of Cultural Transformation emphasized the importance of diversity and inclusion in STEM, viewing the event as a long-term strategy to strengthen these values [3] Group 3: Activities and Engagement - The program included a guided tour of the IBA Beam Factory and interactive booths where female colleagues shared their career experiences [3] - The student initiative WomIn Tech participated to promote gender diversity in STEM, engaging with the attendees [3] Group 4: Participant Feedback - A fifth-year student expressed that the event helped clarify her career options in science and engineering, finding the discussions with female engineers inspiring [4]

Company Overview - IBA (Ion Beam Applications S.A.) is the world leader in particle accelerator technology and a leading supplier of equipment and services in proton therapy, which is the most advanced form of radiation therapy available today [6] - The company is also a key player in industrial sterilization, radiopharmaceuticals, and dosimetry [6] - IBA is based in Louvain-la-Neuve, Belgium, and employs approximately 2,100 people worldwide [6] - The company is listed on the pan-European stock exchange EURONEXT [7] Upcoming Financial Results - IBA will publish its consolidated results for the half year 2025 on Thursday, 28 August 2025 at 7am CEST [2] - A conference call and webcast will be hosted by IBA's management team on the same day at 3pm CEST, which will include a Q&A session [3] - The presentation will be available on IBA's investor relations website shortly before the call [4]

Company Overview - IBA (Ion Beam Applications S.A.) is a global leader in particle accelerator technology, specializing in proton therapy, industrial sterilization, radiopharmaceuticals, and dosimetry [5][6] - The company is headquartered in Louvain-la-Neuve, Belgium, and employs approximately 2,100 people worldwide [5] - IBA is recognized as a certified B Corporation (B Corp), meeting high standards of verified social and environmental performance [5] Shareholder Information - The total capital of IBA is EUR 42,502,318.54, with 30,282,218 securities conferring voting rights [2] - The existing voting rights amount to 40,516,629, which is the denominator for calculating the quota of voting rights that can trigger notification requirements [2] - The statutory ceiling for voting at general meetings is set at 35% of the total voting rights, equating to 14,180,820.2 votes [5] Voting Rights and Regulations - IBA has introduced loyalty voting rights, which apply to registered shares held for at least two consecutive years [3] - The calculation method for loyalty voting rights is based on the LIFO (last in, first out) principle [4] - The company must publish changes in the number of voting rights at the end of each calendar month when such changes occur [1][2]

Group 1 - IBA has initiated a share buyback program to repurchase up to 650,000 ordinary shares to fulfill obligations under long-term incentive plans for management and certain personnel [2][3] - The company repurchased a total of 16,651 shares between May 27 and May 28, 2025, at an average price of €12.19 per share, totaling €203,014.21 [3] - The total number of treasury shares held by IBA amounts to 1,015,552, representing 3.35% of total issued shares, which are 30,282,218 [3] Group 2 - IBA is a leader in particle accelerator technology, specializing in proton therapy, industrial sterilization, radiopharmaceuticals, and dosimetry [4] - The company is based in Louvain-la-Neuve, Belgium, and employs approximately 2,100 people globally [4] - IBA is listed on the pan-European stock exchange EURONEXT [5]

Group Overview - IBA reported a solid start to 2025, driven by strong market momentum in Proton Therapy and positive trends in Dosimetry [4][6] - The company has a backlog of €1.5 billion in IBA Clinical Equipment and Services, with a positive net cash position of €9 million [6] - A share buyback program is ongoing, with 582,849 shares purchased as of May 19, 2025, against a target of 650,000 by year-end [6] Proton Therapy and Dosimetry - There are currently 38 ongoing proton therapy projects, including 8 ProteusPLUS and 30 ProteusONE systems, with 9 installations underway [7] - Strong commercial activity is noted in the Asia-Pacific region, with significant contracts signed in India and Taiwan [7] - The integration of Radcal Corporation is back on track, supporting profitability in Dosimetry [7] Product Innovations - IBA launched the QUASAR GRID system and myQA Blue Phantom, enhancing quality assurance solutions [7] - Two additional sales in Radio Pharma Solutions were activated post-period, including a contract in Taiwan [7] - The company introduced CASSY, a new compact synthesizer aimed at improving efficiency in radiotracers production [7] Financial Outlook - IBA maintains its one-year guidance for 2025, expecting a REBIT of at least €25 million, supported by positive performance in Proton Therapy [9] - The mid-term outlook (2024-2028) indicates confidence in sustained profitability while monitoring macroeconomic conditions [10] - Revenue is projected to grow at a normalized frontloaded rate of 5-7% CAGR, with OPEX expected to be up to 30% of sales per annum [14]