Ascendis Pharma (ASND) reported a Q4 diluted loss Wednesday of 0.64 euro ($0.66) per share, narrowing from a loss of 1.54 euros a year earlier.
Analysts polled by FactSet expected a loss of $0.95.
Revenue for the quarter ended Dec. 31 was 173.9 million euros, up from 137.7 million euros a year earlier.
Analysts surveyed by FactSet expected $119.5 million.
Shares were up more than 5% in after-hours activity.