Publication relating to transparency notification

REGULATED INFORMATION

Publication relating to transparency notification

Mont-Saint-Guibert (Belgium), March 13, 2026, 10:30 pm CET / 5:30 pm ET – In accordance with article 14 of the Law of May 2, 2007 on the disclosure of large shareholdings, Nyxoah SA (Euronext Brussels/Nasdaq: NYXH) announces that it received a transparency notification as detailed below.

BNP Paribas Asset Management

On March 11, 2026, Nyxoah received a transparency notification from BNP Paribas Asset Management SA. Based on the notification, BNP Paribas Asset Management Europe SAS holds 1,307,817 voting rights, representing 3.00% of the total number of voting rights on March 9, 2026 (43,662,403).

The notification dated March 11, 2026 contains the following information:

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Contact:

Nyxoah

John Landry, CFO

IR@nyxoah.com

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