ARCA biopharma, Inc. announced earnings results for the first quarter ended March 31, 2021. For the first quarter, the company announced operating loss was USD 4.102 million compared to USD 1.340 million a year ago. Net loss was USD 4.100 million compared to USD 1.320 million a year ago. Basic loss per share from continuing operations was USD 0.33 compared to USD 0.83 a year ago.