LeonaBio 

LeonaBio, Inc. operates as a biopharmaceutical firm engaged in clinical-stage development. Its core mission revolves around crafting small molecule therapies aimed at revitalizing neurological function and arresting the advancement of neurodegenerative conditions. The company's active development portfolio encompasses ATH-1105, an experimental therapy for amyotrophic lateral sclerosis (ALS) that is currently undergoing Phase 1 clinical assessment. Similarly, ATH-1020 is also in Phase 1 trials, targeting various neurodegenerative disorders. Furthermore, LeonaBio has an array of earlier-stage compounds in preclinical research. The company, which was originally established as Athira Pharma, Inc., rebranded itself as LeonaBio, Inc. in January 2026. Founded in 2011, its corporate headquarters are situated in Bothell, Washington.