Ion Beam Applications, SA

Declaration of Voting Results & Voting Rights Announcements • Feb 12, 2015

IBA – DATA CONCERNING TRANSPARENCY

Louvain-la-Neuve, Belgium, February 12, 2015 – IBA (Ion Beam Applications SA, EURONEXT), the world's leading provider of proton therapy solutions for the treatment of cancer, announces that it has received today a transparency notification, in accordance with Article 29 §1 al.2 of the Transparency Law (law of May 2, 2007 and Royal Decree of February 14, 2008) and the content of which is summarized below.

During the year 2014, Sopartec SA has sold IBA shares with voting rights, so that as from 12 June 2014, Sopartec SA held 403 049 IBA shares with voting rights. As a result, the sum of the affiliated companies Sopartec SA and Catholic University of Louvain (UCL) has been brought below the 3% threshold provided in Article 34 of IBA's Articles of Association.

ENTITY	31 DECEMBER 2013		12 JUNE 2014
	DENOMINATOR 27 635 439		DENOMINATOR 27 675 955
	SHARES WITH	%	SHARES WITH	%
	VOTING RIGHTS		VOTING RIGHTS
Sopartec SA	529 925	1.92%	403 049	1.446%
Place de l'Université 1
1348 Louvain-la-Neuve
UCL	426 885	1.94%	426 885	1.542%
Place de l'Université 1
1348 Louvain-la-Neuve
Total	956 810	3.46%	829 934	2.998%

* * * *

About IBA

IBA (Ion Beam Applications SA) is a cancer diagnostics and treatment equipment company, and the worldwide technology leader in the field of proton therapy, the most advanced form of radiotherapy available today.

The Company's primary expertise lies in the development of next generation proton therapy technologies that provide oncology care providers with premium quality services and equipment. IBA's proton therapy solutions are scalable and adaptable, offering universal full scale proton therapy centers as well as next generation compact, single room solutions. IBA also focuses on the development and supply of dosimetry solutions for Quality Assurance of medical equipment and increased patient safety as well as particle accelerators for medical and industrial applications.

IBA employs more than 1,000 people worldwide and is listed on Euronext Brussels, (IBA: Reuters IBAB.BR and Bloomberg IBAB.BB), more information can be found at: www.iba-worldwide.com

Press release | February 12, 2015 1 | 2

Press release |

Regulated information

For more information, please contact

IBA

Jean-Marc Bothy Chief Financial Officer Tel: +32 10 47 58 90 investorrelations@iba-group.com Thomas Ralet Vice-President Corporate Communication Tel : +32 10 47 58 90 communication@iba-group.com

Press release | February 12, 2015 2 | 2