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) publishes the below information following the issuance of 55,232,558 new shares in connection with its previously announced underwritten public offering in the United States, which included shares sold in a private offering to certain qualified or institutional investors outside the United States, including within the European Union.

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Contact:

Nyxoah

John Landry, CFO

IR@nyxoah.com

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