Compass Minerals International (CMP) reported a fiscal Q1 adjusted loss late Monday of $0.55 per diluted share, swinging from earnings of $0.07 a year earlier.

Three analysts polled by FactSet expected non-GAAP earnings of $0.15 per share.

Sales for the quarter ended Dec. 31 totaled $307.2 million, down from $341.7 million a year earlier.

Four analysts surveyed by FactSet projected $295.9 million.

Shares of the company were down 1% in recent after-hours activity.