Alto Neuroscience Inc. Alto Neuroscience Inc is a clinical-stage biopharmaceutical company with a mission to redefine psychiatry by leveraging individuals' neurobiology to develop personalized and effective treatment options. The company currently consists of different clinical-stage assets such as ALTO-100, ALTO-202, ALTO-101, and ALTO-300 among others initially targeting depressive disorders and schizophrenia populations as identified by independent brain-based biomarkers.