Threshold crossing by Cyrille Tupin at ABIONYX PHARMA

On December 9, 2024, Mr. Cyrille Tupin announced that he had crossed the threshold of 5% of voting rights at ABIONYX PHARMA, as of December 5, 2024. This crossing was achieved directly and through Serfeliz, a company he controls. Mr. Tupin holds 1,592,214 shares representing 2,763,760 voting rights in the company, or 4.56% of the capital and 6.06% of the voting rights.

The increase comes from a double voting rights allocation, increasing his influence beyond the 5% threshold. This overshoot underlines Mr. Tupin's growing importance within the Euronext Paris-listed company, with a distribution of 1,522,770 shares and 69,444 shares for Serfeliz.