Nyxoah SA

Declaration of Voting Results & Voting Rights Announcements • May 28, 2024

REGULATED INFORMATION

Information on the total number of voting rights and shares

Mont-Saint-Guibert (Belgium), May 28, 2024, 10:30 pm CET / 4:30 pm ET – In accordance with article 15 of the Law of 2 May 2007 on the disclosure of large shareholdings, Nyxoah SA (Euronext Brussels and Nasdaq: NYXH) publishes the below information following the issue of new shares.

• Share capital: EUR 5,851,253.43
• Total number of securities carrying voting rights: 34,060,390 (all ordinary shares)
• Total number of voting rights (= denominator): 34,060,390 (all relating to ordinary shares)
• Number of rights to subscribe to securities carrying voting rights not yet issued:
  • o 100 "2018 ESOP Warrants" issued on December 12, 2018, entitling their holders to subscribe to a total number of 50,000 securities carrying voting rights (all ordinary shares);
  • o 400,500 "2020 ESOP Warrants" issued on February 21, 2020, entitling their holders to subscribe to a total number of 400,500 securities carrying voting rights (all ordinary shares); and
  • o 1,072,000 "2021 ESOP Warrants" issued on September 8, 2021, entitling their holders to subscribe to a total number of 1,072,000 securities carrying voting rights (all ordinary shares); and
  • o 700,000 "2022 ESOP Warrants" issued on December 28, 2022, entitling their holders to subscribe to a total number of 700,000 securities carrying voting rights (all ordinary shares).

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Contact: Nyxoah David DeMartino, Chief Strategy Officer IR@nyxoah.com