Rosetta Stone Inc. announced earnings results for the fourth quarter ended December 31, 2019. For the fourth quarter, the company announced sales was USD 46.693 million compared to USD 44.574 million a year ago. Operating loss was USD 5.530 million compared to USD 4.378 million a year ago. Net loss was USD 6.688 million compared to USD 4.424 million a year ago. For the full year, sales was USD 182.702 million compared to USD 173.634 million a year ago. Operating loss was USD 12.938 million compared to USD 19.619 million a year ago. Net loss was USD 12.956 million compared to USD 21.473 million a year ago.