Transparency notification received from ABO Infinium Americas OpCo LTD.

REGULATED INFORMATION

Article 14 of the Law of 2 May 2007 on disclosure of major holdings

Mont-Saint-Guibert, Belgium, August 19, 2024, 7:00 CEST – BIOSENIC (Euronext Brussels and Paris: BIOS), the clinical-stage company specializing in serious autoimmune and inflammatory diseases and cell therapy, today announces that it has received a transparency notification from ABO Infinium Americas OpCo LTD. The details of the transparency notification are set out below and the full text of the transparency notification can be consulted on the website of BioSenic, under the heading “Major shareholders & transparency notices”.

The transparency notification indicates that the voting rights attached to BioSenic's shares held by ABO Infinium Americas OpCo LTD. have crossed below the threshold of 5% as a result of the transfer of shares of BioSenic.

The notification received from ABO Infinium Americas OpCo LTD. dated 16 August 2024 contains the following information:

• Reason for the notification: Acquisition or transfer of voting securities or voting rights
• Notification by: A parent company or controlling person
• Person subject to the notification requirement:
  • ABO Infinium Americas OpCo LTD.
  • ABO Securities
  • Omega Financial Corporation
  • Mr Pierre Vannineuse
• Transaction date: 14 August 2024
• Threshold that is crossed: 5%
• Denominator: 251 312 817
• Full chain of controlled undertakings through which the holding is effectively held: ABO Infinium Americas OpCo LTD. (303 Shriley Street, Nassau, Bahamas) is 100% owned by ABO Securities (71 Fort Street, Georges Town, Grand Cayman, Cayman Island). ABO Securities is 100% owned by Omega Financial Corporation (71 Fort Street, Georges Town, Grand Cayman, Cayman Island). Omega Financial Corporation is 100% owned by Pierre Vannineuse.
  
  

About BioSenic

BioSenic is a leading biotech company specializing in the development of clinical assets issued from its Medsenic’s arsenic trioxide (ATO) platform. Key target indications for the autoimmune platform include graft-versus-host-disease (GvHD), systemic lupus erythematosus (SLE), and now systemic sclerosis (SSc).
Following the merger in October 2022, BioSenic combined the strategic positionings and strengths of Medsenic and Bone Therapeutics. The merger specifically enables Medsenic/Biosenic to develop an entirely new arsenal of various anti-inflammatory and anti-autoimmune formulations using the immunomodulatory properties of ATO/oral ATO (OATO).