Exhibit 99.1 REGULATED INFORMATION Nyxoah Reports Fourth Quarter and Full Year 2022 Financial and Operating Results Completed all 115 implants in the DREAM U.S. pivotal study Mont-Saint-Guibert, Belgium – March 22, 2023 09:05pm CET / 4:05pm ET – Nyxoah SA (Euronext Brussels/Nasdaq: NYXH) (“Nyxoah” or the “Company”), a medical technology company focused on the development and commercialization of innovative solutions to treat Obstructive Sleep Apnea (OSA), today reported financial and operating results for t ...