Windtree Therapeutics, Inc. ("Windtree" or the "Company") (NasdaqCM: WINT), a biotechnology company focused on advancing early and late-stage innovative therapies for critical conditions and diseases, today announced it has successfully completed enrollment in its SEISMiC Extension Phase 2b study of istaroxime in early cardiogenic shock caused by heart failure. The study is evaluating the ability of istaroxime to improve heart function and low blood pressure in the setting of early cardiogenic shock due to heart failure. The Company is looking to extend the positive results on these parameters as observed in the Company's first SEISMiC Phase 2 clinical study that was previously reported. In addition, the Company hopes that the study results will substantiate the encouraging observations from the Company's Phase 2 clinical study, indicating istaroxime has a favorable renal profile and does not increase cardiac arrhythmias. The SEISMiC Extension Study is utilizing longer dosing duration and tapering the dosing to assess the potential benefits.