The National Institutes of Health (NIH) is inviting applications for the NIH StrokeNet Clinical Trials and Biomarker Studies for Stroke Treatment, Recovery, and Prevention, under a cooperative agreement mechanism (UG3/UH3). This funding opportunity aims to support multi-site exploratory and confirmatory clinical trials, as well as biomarker validation studies, focusing on innovative interventions for stroke prevention, treatment, and recovery. The initiative emphasizes collaboration within the NIH StrokeNet infrastructure, which includes coordinating and data management centers to facilitate recruitment and implementation of studies. Interested applicants must submit their proposals by November 19, 2026, and can find additional information and application details at the NIH grants website or contact NIH Grants Information at grantsinfo@nih.gov.