Nyxoah S.A.(NYXH)Earnings, Financials & Key Ratios

REGULATED INFORMATION Information on the total number of voting rights and shares Mont-Saint-Guibert (Belgium), June 30, 2026 , 10:30 pm CET / 4:30 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 146,531 new shares on June 30, 2026 following the exercise of so-called “restricted share units”. Share capital: EUR 7,075,152.31 Total number of securities carrying voting rights: 100,072,815 (all ordinary shares) Total number of voting rights (= denominator): 100,072,815 (all relating to ordinary shares) Number of rights to subscribe to securities carrying voting rights not yet issued: 3,731,884 (all granted subscription rights; this number excludes 36,125 subscription rights that were issued but not yet granted) Total number of convertible bonds: 225 convertible bonds with a nominal value of EUR 83,000 per bond Total number of voting rights that can be obtained in case of conversion of all 225 convertible bonds at the current (revised) conversion price of EUR 1.48 per share: 12,618,243 (this number does not take into account the conversion of interest) * * * Contact: Nyxoah John Landry, [email protected] Attachment 2026 06 30 - Press release - Number of shares (ENG)

REGULATED INFORMATION Publication relating to transparency notifications Mont-Saint-Guibert (Belgium), June 29, 2026 , 10:30 pm CET / 4:30 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 transparency notifications as detailed below. Orin Hirchman On June 24, 2026, Nyxoah received a transparency notification from Orin Hirchman following an acquisition of voting securities by entities controlled by Orin Hirchman.

Nyxoah to Host Investor Day in New York on July 8, 2026 Leadership team and Board will discuss the U.S. commercial execution, growth strategy and key priorities Mont-Saint-Guibert, Belgium – June 23, 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 that it will host an Investor and Analyst Day on Wednesday, July 8, 2026, in New York. The event will be held at the offices of Bank of America and will run from 10:00 AM to 12:30 PM ET (16:00 to 18:30 CET).

INFORMATIONS RÉGLEMENTÉESLe 19 juin 2026, 22:30h CET / 16:30h ET NYXOAH SA(Euronext Brussels/Nasdaq: NYXH)Rue Edouard Belin 12, 1435 Mont-Saint-Guibert, Belgique(ci-après la « Société ») Invitation à assister à l'assemblée générale extraordinaire des actionnaires de la Société qui se tiendra le 9 juillet 2026 Le conseil d'administration de la Société a le plaisir d'inviter ses détenteurs de titres à assister à l'assemblée générale extraordinaire des actionnaires de la Société qui se tiendra le jeudi 9 juillet 2026 à 14 heures CET au siège de la Société, ou à tout autre endroit qui sera indiqué avant ce moment-là.

REGULATED INFORMATION June 19, 2026, 10:30pm CET / 4:30pm ET NYXOAH SA (Euronext Brussels/Nasdaq: NYXH) Rue Edouard Belin 12, 1435 Mont-Saint-Guibert, Belgium(hereinafter the “Company”) Invitation to attend the extraordinary shareholders' meeting of the Company to be held on July 9, 2026 The board of directors of the Company is pleased to invite its securities holders to attend the extraordinary shareholders' meeting of the Company, to be held on Thursday, July 9, 2026 at 2:00 p.m. CET at the Company's seat, or at such other place as will be indicated prior to such time.