Nyxoah (NYXH) said late Monday that preliminary Q4 net revenue rose to about 5.7 million euros ($6.6 million) from 1.3 million euros a year earlier.
Analysts surveyed by FactSet expect 3.5 million euros.
Preliminary 2025 net revenue rose to roughly 10 million euros from 4.5 million euros a year earlier.
Analysts polled by FactSet expect 7.8 million euros.
For Q1, the company anticipates US net revenue to grow approximately 25% compared with the fourth quarter of 2025.
Shares of Nyxoah were up 4.5% in after-hours trading.