Warrior Met Coal (HCC) reported Q4 diluted earnings Thursday of $0.02, down from $2.47 a year earlier.
One analyst polled by FactSet expected $0.46.
Revenue for the quarter ended Dec. 31 was $297.5 million, down from $363.8 million a year earlier.
Four analysts surveyed by FactSet expected $305.2 million.
Shares were down more than 5% in after-hours activity.