Ero Copper (ERO) reported Q4 adjusted net income Thursday of $0.17 per diluted share, down from $0.21 a year earlier.
Analysts polled by FactSet expected $0.20.
Revenue for the quarter ended Dec. 31 was $122.5 million, down from $116.4 million a year earlier.
Analysts surveyed by FactSet expected $142.6 million.