IAMGOLD (IAG) reported Q1 adjusted earnings late Tuesday of $0.10 per share, down from $0.11 a year earlier.
Analysts polled by FactSet expected $0.09.
Revenue for the quarter was $477.1 million, compared with $338.9 million a year earlier.
Three analysts surveyed by FactSet expected $498.3 million.
Shares of the company were down 4.6% in Tuesday's after-hours activity.