REGULATED INFORMATION Information on the total number of voting rights and shares Mont-Saint-Guibert (Belgium), June 10, 2026, 11:00 pm CET / 5:00 pm ET – In accordance with article 15 of the Law of May 2, 2007 on the disclosure of large shareholdings, Nyxoah SA (Euronext Brussels and Nasdaq: NYXH)

$110 Million in Aggregate Financings to Accelerate Genio’s U.S. Commercial Launch Mont-Saint-Guibert, Belgium – June 10, 2026, 10:30 pm CET / 04:30 pm ET – Nyxoah SA (Euronext Brussels/Nasdaq: NYXH) (“Nyxoah” or the “Company”), a medical technology company focused on developing innovative solutions for Obstructive Sleep Apnea (OSA), has completed

REGULATED INFORMATION Nyxoah Announces Closing of Underwritten Public Offering Mont-Saint-Guibert, Belgium – June 10, 2026, 10:05 pm CET / 4:05 pm ET – Nyxoah SA (Euronext Brussels/ Nasdaq: NYXH) (“Nyxoah” or the “Company”), a medical technology company focused on developing innovative solutions for Obstructive Sleep Apnea (OSA), today announced the